./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:17:27,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:17:27,792 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-19 04:17:27,798 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:17:27,799 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:17:27,825 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:17:27,826 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:17:27,827 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:17:27,828 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:17:27,829 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:17:27,829 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:17:27,830 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:17:27,830 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:17:27,831 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:17:27,831 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:17:27,832 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:17:27,833 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:17:27,833 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:17:27,834 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:17:27,834 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:17:27,835 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:17:27,835 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:17:27,836 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:17:27,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:17:27,837 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:17:27,837 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:17:27,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:17:27,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:17:27,839 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:17:27,839 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:17:27,840 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:17:27,840 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 04:17:27,840 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:17:27,841 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:17:27,841 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:17:27,841 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:17:27,841 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:17:27,842 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:17:27,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:17:27,842 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:17:27,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:17:27,843 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:17:27,843 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:17:27,843 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:17:27,843 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:17:27,844 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:17:27,844 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:17:27,844 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6710ae2bfe9a41273181e1b4b9dbdfa98f0dea6daffb771915892955eccb69dd [2023-11-19 04:17:28,126 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:17:28,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:17:28,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:17:28,155 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:17:28,156 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:17:28,157 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2023-11-19 04:17:31,297 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:17:31,634 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:17:31,640 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/sv-benchmarks/c/pthread-ext/35_double_lock_p3_vs.i [2023-11-19 04:17:31,660 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ/data/d972b4a9c/6f4e4ded5f1d4fa8838fa83f14f62fed/FLAG2341911f3 [2023-11-19 04:17:31,679 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ/data/d972b4a9c/6f4e4ded5f1d4fa8838fa83f14f62fed [2023-11-19 04:17:31,683 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:17:31,685 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:17:31,687 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:17:31,688 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:17:31,699 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:17:31,700 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:17:31" (1/1) ... [2023-11-19 04:17:31,702 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54c5036d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:31, skipping insertion in model container [2023-11-19 04:17:31,702 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:17:31" (1/1) ... [2023-11-19 04:17:31,758 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:17:32,250 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:17:32,264 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:17:32,353 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:17:32,412 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:17:32,412 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:32 WrapperNode [2023-11-19 04:17:32,413 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:17:32,416 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:17:32,417 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:17:32,417 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:17:32,426 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:32" (1/1) ... [2023-11-19 04:17:32,462 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:32" (1/1) ... [2023-11-19 04:17:32,516 INFO L138 Inliner]: procedures = 172, calls = 28, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 226 [2023-11-19 04:17:32,517 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:17:32,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:17:32,518 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:17:32,518 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:17:32,529 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:32" (1/1) ... [2023-11-19 04:17:32,529 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:32" (1/1) ... [2023-11-19 04:17:32,536 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:32" (1/1) ... [2023-11-19 04:17:32,537 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:32" (1/1) ... [2023-11-19 04:17:32,556 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:32" (1/1) ... [2023-11-19 04:17:32,561 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:32" (1/1) ... [2023-11-19 04:17:32,564 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:32" (1/1) ... [2023-11-19 04:17:32,567 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:32" (1/1) ... [2023-11-19 04:17:32,572 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:17:32,573 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:17:32,573 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:17:32,574 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:17:32,575 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:32" (1/1) ... [2023-11-19 04:17:32,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:17:32,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:17:32,614 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:17:32,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a652aba-eda7-4118-8d18-9b3b8b3617df/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:17:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:17:32,666 INFO L130 BoogieDeclarations]: Found specification of procedure thr2 [2023-11-19 04:17:32,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thr2 [2023-11-19 04:17:32,668 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 04:17:32,668 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 04:17:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:17:32,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:17:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:17:32,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:17:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:17:32,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:17:32,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:17:32,675 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 04:17:32,841 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:17:32,844 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:17:33,496 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:17:34,061 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:17:34,062 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:17:34,071 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:17:34 BoogieIcfgContainer [2023-11-19 04:17:34,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:17:34,077 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:17:34,077 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:17:34,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:17:34,082 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:17:31" (1/3) ... [2023-11-19 04:17:34,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548fd554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:17:34, skipping insertion in model container [2023-11-19 04:17:34,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:32" (2/3) ... [2023-11-19 04:17:34,086 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548fd554 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:17:34, skipping insertion in model container [2023-11-19 04:17:34,087 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:17:34" (3/3) ... [2023-11-19 04:17:34,090 INFO L112 eAbstractionObserver]: Analyzing ICFG 35_double_lock_p3_vs.i [2023-11-19 04:17:34,104 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 04:17:34,120 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:17:34,121 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 21 error locations. [2023-11-19 04:17:34,121 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:17:34,256 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 04:17:34,315 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:17:34,348 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 127 transitions, 262 flow [2023-11-19 04:17:34,355 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 127 transitions, 262 flow [2023-11-19 04:17:34,358 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 127 transitions, 262 flow [2023-11-19 04:17:34,490 INFO L124 PetriNetUnfolderBase]: 7/137 cut-off events. [2023-11-19 04:17:34,491 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 04:17:34,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 137 events. 7/137 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 214 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 121. Up to 4 conditions per place. [2023-11-19 04:17:34,508 INFO L119 LiptonReduction]: Number of co-enabled transitions 5908 [2023-11-19 04:17:39,834 INFO L134 LiptonReduction]: Checked pairs total: 31702 [2023-11-19 04:17:39,834 INFO L136 LiptonReduction]: Total number of compositions: 207 [2023-11-19 04:17:39,847 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 60 places, 57 transitions, 122 flow [2023-11-19 04:17:40,069 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2148 states, 1939 states have (on average 3.172253739040743) internal successors, (6151), 2147 states have internal predecessors, (6151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:40,098 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:17:40,108 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=FINITE_AUTOMATA, 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;@4d3d36a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:17:40,109 INFO L358 AbstractCegarLoop]: Starting to check reachability of 44 error locations. [2023-11-19 04:17:40,120 INFO L276 IsEmpty]: Start isEmpty. Operand has 2148 states, 1939 states have (on average 3.172253739040743) internal successors, (6151), 2147 states have internal predecessors, (6151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:40,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:17:40,127 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:40,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:17:40,130 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2023-11-19 04:17:40,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:40,138 INFO L85 PathProgramCache]: Analyzing trace with hash 27910342, now seen corresponding path program 1 times [2023-11-19 04:17:40,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:17:40,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204761135] [2023-11-19 04:17:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:40,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:17:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:40,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:40,471 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:17:40,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204761135] [2023-11-19 04:17:40,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204761135] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:40,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:40,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:17:40,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515263622] [2023-11-19 04:17:40,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:40,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:17:40,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:17:40,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:17:40,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:17:40,545 INFO L87 Difference]: Start difference. First operand has 2148 states, 1939 states have (on average 3.172253739040743) internal successors, (6151), 2147 states have internal predecessors, (6151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:40,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:40,702 INFO L93 Difference]: Finished difference Result 667 states and 1815 transitions. [2023-11-19 04:17:40,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:17:40,706 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 04:17:40,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:40,743 INFO L225 Difference]: With dead ends: 667 [2023-11-19 04:17:40,743 INFO L226 Difference]: Without dead ends: 667 [2023-11-19 04:17:40,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:17:40,751 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:40,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 14 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:17:40,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2023-11-19 04:17:40,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 667. [2023-11-19 04:17:40,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 667 states, 662 states have (on average 2.7416918429003023) internal successors, (1815), 666 states have internal predecessors, (1815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:40,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 667 states to 667 states and 1815 transitions. [2023-11-19 04:17:40,902 INFO L78 Accepts]: Start accepts. Automaton has 667 states and 1815 transitions. Word has length 4 [2023-11-19 04:17:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:40,903 INFO L495 AbstractCegarLoop]: Abstraction has 667 states and 1815 transitions. [2023-11-19 04:17:40,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:40,904 INFO L276 IsEmpty]: Start isEmpty. Operand 667 states and 1815 transitions. [2023-11-19 04:17:40,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:17:40,904 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:40,905 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:17:40,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:17:40,911 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2023-11-19 04:17:40,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:40,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1052060106, now seen corresponding path program 1 times [2023-11-19 04:17:40,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:17:40,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705438076] [2023-11-19 04:17:40,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:40,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:17:40,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:41,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:41,052 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:17:41,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705438076] [2023-11-19 04:17:41,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705438076] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:41,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:41,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:17:41,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232289492] [2023-11-19 04:17:41,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:41,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:17:41,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:17:41,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:17:41,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:17:41,056 INFO L87 Difference]: Start difference. First operand 667 states and 1815 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:41,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:41,227 INFO L93 Difference]: Finished difference Result 970 states and 2614 transitions. [2023-11-19 04:17:41,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:17:41,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 04:17:41,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:41,239 INFO L225 Difference]: With dead ends: 970 [2023-11-19 04:17:41,239 INFO L226 Difference]: Without dead ends: 970 [2023-11-19 04:17:41,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:17:41,241 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 25 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:41,242 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 22 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:17:41,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2023-11-19 04:17:41,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 708. [2023-11-19 04:17:41,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 703 states have (on average 2.7112375533428166) internal successors, (1906), 707 states have internal predecessors, (1906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 1906 transitions. [2023-11-19 04:17:41,279 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 1906 transitions. Word has length 6 [2023-11-19 04:17:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:41,279 INFO L495 AbstractCegarLoop]: Abstraction has 708 states and 1906 transitions. [2023-11-19 04:17:41,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:41,280 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 1906 transitions. [2023-11-19 04:17:41,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-11-19 04:17:41,281 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:41,281 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:41,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:17:41,282 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 40 more)] === [2023-11-19 04:17:41,282 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:41,283 INFO L85 PathProgramCache]: Analyzing trace with hash -582509575, now seen corresponding path program 1 times [2023-11-19 04:17:41,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:17:41,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070777905] [2023-11-19 04:17:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:41,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:17:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:17:41,310 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:17:41,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:17:41,370 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:17:41,371 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:17:41,376 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (43 of 44 remaining) [2023-11-19 04:17:41,378 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (42 of 44 remaining) [2023-11-19 04:17:41,379 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (41 of 44 remaining) [2023-11-19 04:17:41,387 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (40 of 44 remaining) [2023-11-19 04:17:41,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (39 of 44 remaining) [2023-11-19 04:17:41,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (38 of 44 remaining) [2023-11-19 04:17:41,388 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (37 of 44 remaining) [2023-11-19 04:17:41,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (36 of 44 remaining) [2023-11-19 04:17:41,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (35 of 44 remaining) [2023-11-19 04:17:41,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (34 of 44 remaining) [2023-11-19 04:17:41,389 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (33 of 44 remaining) [2023-11-19 04:17:41,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (32 of 44 remaining) [2023-11-19 04:17:41,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (31 of 44 remaining) [2023-11-19 04:17:41,390 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (30 of 44 remaining) [2023-11-19 04:17:41,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (29 of 44 remaining) [2023-11-19 04:17:41,391 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (28 of 44 remaining) [2023-11-19 04:17:41,392 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (27 of 44 remaining) [2023-11-19 04:17:41,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (26 of 44 remaining) [2023-11-19 04:17:41,393 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (25 of 44 remaining) [2023-11-19 04:17:41,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (24 of 44 remaining) [2023-11-19 04:17:41,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (23 of 44 remaining) [2023-11-19 04:17:41,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (22 of 44 remaining) [2023-11-19 04:17:41,394 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 44 remaining) [2023-11-19 04:17:41,395 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err0ASSERT_VIOLATIONDATA_RACE (20 of 44 remaining) [2023-11-19 04:17:41,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err1ASSERT_VIOLATIONDATA_RACE (19 of 44 remaining) [2023-11-19 04:17:41,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err2ASSERT_VIOLATIONDATA_RACE (18 of 44 remaining) [2023-11-19 04:17:41,396 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err3ASSERT_VIOLATIONDATA_RACE (17 of 44 remaining) [2023-11-19 04:17:41,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err4ASSERT_VIOLATIONDATA_RACE (16 of 44 remaining) [2023-11-19 04:17:41,397 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err5ASSERT_VIOLATIONDATA_RACE (15 of 44 remaining) [2023-11-19 04:17:41,398 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err6ASSERT_VIOLATIONDATA_RACE (14 of 44 remaining) [2023-11-19 04:17:41,399 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err7ASSERT_VIOLATIONDATA_RACE (13 of 44 remaining) [2023-11-19 04:17:41,402 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err8ASSERT_VIOLATIONDATA_RACE (12 of 44 remaining) [2023-11-19 04:17:41,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err9ASSERT_VIOLATIONDATA_RACE (11 of 44 remaining) [2023-11-19 04:17:41,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err10ASSERT_VIOLATIONDATA_RACE (10 of 44 remaining) [2023-11-19 04:17:41,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err11ASSERT_VIOLATIONDATA_RACE (9 of 44 remaining) [2023-11-19 04:17:41,403 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err12ASSERT_VIOLATIONDATA_RACE (8 of 44 remaining) [2023-11-19 04:17:41,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err13ASSERT_VIOLATIONDATA_RACE (7 of 44 remaining) [2023-11-19 04:17:41,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err14ASSERT_VIOLATIONDATA_RACE (6 of 44 remaining) [2023-11-19 04:17:41,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr2Err15ASSERT_VIOLATIONDATA_RACE (5 of 44 remaining) [2023-11-19 04:17:41,404 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (4 of 44 remaining) [2023-11-19 04:17:41,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 44 remaining) [2023-11-19 04:17:41,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (2 of 44 remaining) [2023-11-19 04:17:41,407 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 44 remaining) [2023-11-19 04:17:41,408 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (0 of 44 remaining) [2023-11-19 04:17:41,408 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:17:41,411 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-11-19 04:17:41,413 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 04:17:41,414 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 04:17:41,518 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 04:17:41,534 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:17:41,535 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 219 places, 220 transitions, 460 flow [2023-11-19 04:17:41,536 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 219 places, 220 transitions, 460 flow [2023-11-19 04:17:41,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 219 places, 220 transitions, 460 flow [2023-11-19 04:17:41,616 INFO L124 PetriNetUnfolderBase]: 9/218 cut-off events. [2023-11-19 04:17:41,616 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 04:17:41,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 218 events. 9/218 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 474 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 225. Up to 6 conditions per place. [2023-11-19 04:17:41,638 INFO L119 LiptonReduction]: Number of co-enabled transitions 20160 [2023-11-19 04:17:54,175 INFO L134 LiptonReduction]: Checked pairs total: 349074 [2023-11-19 04:17:54,176 INFO L136 LiptonReduction]: Total number of compositions: 359 [2023-11-19 04:17:54,177 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 129 places, 123 transitions, 266 flow [2023-11-19 04:17:59,968 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 148559 states, 144983 states have (on average 3.9115620452053) internal successors, (567110), 148558 states have internal predecessors, (567110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:59,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:17:59,973 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=FINITE_AUTOMATA, 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;@4d3d36a8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:17:59,974 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2023-11-19 04:18:00,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 148559 states, 144983 states have (on average 3.9115620452053) internal successors, (567110), 148558 states have internal predecessors, (567110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:00,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-11-19 04:18:00,254 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:00,254 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-11-19 04:18:00,255 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-19 04:18:00,256 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:00,256 INFO L85 PathProgramCache]: Analyzing trace with hash 45078154, now seen corresponding path program 1 times [2023-11-19 04:18:00,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:00,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285246229] [2023-11-19 04:18:00,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:00,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:00,332 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:00,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285246229] [2023-11-19 04:18:00,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285246229] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:00,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:00,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:18:00,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594922741] [2023-11-19 04:18:00,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:00,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:18:00,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:00,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:18:00,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:18:00,559 INFO L87 Difference]: Start difference. First operand has 148559 states, 144983 states have (on average 3.9115620452053) internal successors, (567110), 148558 states have internal predecessors, (567110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:02,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:02,401 INFO L93 Difference]: Finished difference Result 48981 states and 185243 transitions. [2023-11-19 04:18:02,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:18:02,402 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-11-19 04:18:02,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:02,919 INFO L225 Difference]: With dead ends: 48981 [2023-11-19 04:18:02,919 INFO L226 Difference]: Without dead ends: 48981 [2023-11-19 04:18:02,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:18:02,922 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:02,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:03,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48981 states. [2023-11-19 04:18:05,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48981 to 48981. [2023-11-19 04:18:05,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48981 states, 48900 states have (on average 3.788200408997955) internal successors, (185243), 48980 states have internal predecessors, (185243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:06,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48981 states to 48981 states and 185243 transitions. [2023-11-19 04:18:06,298 INFO L78 Accepts]: Start accepts. Automaton has 48981 states and 185243 transitions. Word has length 4 [2023-11-19 04:18:06,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:06,299 INFO L495 AbstractCegarLoop]: Abstraction has 48981 states and 185243 transitions. [2023-11-19 04:18:06,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:06,299 INFO L276 IsEmpty]: Start isEmpty. Operand 48981 states and 185243 transitions. [2023-11-19 04:18:06,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:18:06,300 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:06,300 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-19 04:18:06,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:18:06,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-19 04:18:06,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:06,302 INFO L85 PathProgramCache]: Analyzing trace with hash 370474062, now seen corresponding path program 1 times [2023-11-19 04:18:06,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:06,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836505151] [2023-11-19 04:18:06,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:06,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:06,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:06,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:06,373 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:06,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836505151] [2023-11-19 04:18:06,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836505151] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:06,377 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:06,377 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:18:06,378 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638143412] [2023-11-19 04:18:06,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:06,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:06,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:06,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:06,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:06,383 INFO L87 Difference]: Start difference. First operand 48981 states and 185243 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:07,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:07,830 INFO L93 Difference]: Finished difference Result 73710 states and 266598 transitions. [2023-11-19 04:18:07,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:07,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-19 04:18:07,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:08,335 INFO L225 Difference]: With dead ends: 73710 [2023-11-19 04:18:08,336 INFO L226 Difference]: Without dead ends: 73710 [2023-11-19 04:18:08,336 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:08,337 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 63 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:08,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 75 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-11-19 04:18:08,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73710 states. [2023-11-19 04:18:11,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73710 to 54506. [2023-11-19 04:18:11,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54506 states, 54441 states have (on average 3.6547822413254716) internal successors, (198970), 54505 states have internal predecessors, (198970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:11,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54506 states to 54506 states and 198970 transitions. [2023-11-19 04:18:11,345 INFO L78 Accepts]: Start accepts. Automaton has 54506 states and 198970 transitions. Word has length 6 [2023-11-19 04:18:11,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:11,345 INFO L495 AbstractCegarLoop]: Abstraction has 54506 states and 198970 transitions. [2023-11-19 04:18:11,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:11,346 INFO L276 IsEmpty]: Start isEmpty. Operand 54506 states and 198970 transitions. [2023-11-19 04:18:11,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 04:18:11,349 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:11,349 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:11,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:18:11,350 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr2Err3ASSERT_VIOLATIONDATA_RACE === [thr2Err0ASSERT_VIOLATIONDATA_RACE, thr2Err1ASSERT_VIOLATIONDATA_RACE, thr2Err2ASSERT_VIOLATIONDATA_RACE, thr2Err3ASSERT_VIOLATIONDATA_RACE (and 61 more)] === [2023-11-19 04:18:11,350 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:11,350 INFO L85 PathProgramCache]: Analyzing trace with hash -2121019801, now seen corresponding path program 1 times [2023-11-19 04:18:11,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:11,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665646546] [2023-11-19 04:18:11,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:11,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:11,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:11,396 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:11,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665646546] [2023-11-19 04:18:11,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665646546] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:11,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:11,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:18:11,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079868415] [2023-11-19 04:18:11,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:11,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:11,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:11,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:11,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:11,399 INFO L87 Difference]: Start difference. First operand 54506 states and 198970 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:12,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:12,723 INFO L93 Difference]: Finished difference Result 56695 states and 206764 transitions. [2023-11-19 04:18:12,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:12,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 04:18:12,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:13,292 INFO L225 Difference]: With dead ends: 56695 [2023-11-19 04:18:13,292 INFO L226 Difference]: Without dead ends: 56695 [2023-11-19 04:18:13,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:13,293 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 41 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:13,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 83 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time]