./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh --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 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 18:34:03,263 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 18:34:03,330 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-12-02 18:34:03,335 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 18:34:03,335 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 18:34:03,359 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 18:34:03,359 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 18:34:03,360 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 18:34:03,361 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 18:34:03,361 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 18:34:03,362 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 18:34:03,362 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 18:34:03,363 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 18:34:03,363 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 18:34:03,364 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 18:34:03,364 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 18:34:03,365 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 18:34:03,365 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 18:34:03,366 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 18:34:03,366 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 18:34:03,367 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 18:34:03,368 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 18:34:03,369 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 18:34:03,369 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 18:34:03,370 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 18:34:03,370 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 18:34:03,370 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 18:34:03,371 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 18:34:03,371 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 18:34:03,372 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 18:34:03,372 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 18:34:03,373 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-12-02 18:34:03,373 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 18:34:03,373 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 18:34:03,373 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 18:34:03,374 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 18:34:03,374 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 18:34:03,374 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 18:34:03,374 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:34:03,374 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 18:34:03,375 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 18:34:03,375 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 18:34:03,375 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 18:34:03,376 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 18:34:03,376 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 18:34:03,376 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 18:34:03,376 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 18:34:03,376 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 18:34:03,377 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_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e7050d36e2131966739d0040816e49ede1f1e8b3b668f65d41876950193b1d8 [2023-12-02 18:34:03,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 18:34:03,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 18:34:03,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 18:34:03,632 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 18:34:03,633 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 18:34:03,634 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2023-12-02 18:34:06,408 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 18:34:06,645 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 18:34:06,646 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/sv-benchmarks/c/goblint-regression/28-race_reach_86-lists_racing.i [2023-12-02 18:34:06,663 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh/data/a7335cdc8/9b5288c3de6c4e539d806c89a9c0f9fa/FLAG9bc098777 [2023-12-02 18:34:06,675 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh/data/a7335cdc8/9b5288c3de6c4e539d806c89a9c0f9fa [2023-12-02 18:34:06,676 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 18:34:06,678 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 18:34:06,679 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 18:34:06,679 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 18:34:06,683 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 18:34:06,684 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:34:06" (1/1) ... [2023-12-02 18:34:06,685 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c1eefa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:06, skipping insertion in model container [2023-12-02 18:34:06,685 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 06:34:06" (1/1) ... [2023-12-02 18:34:06,738 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 18:34:07,152 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:34:07,211 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 18:34:07,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 18:34:07,322 INFO L206 MainTranslator]: Completed translation [2023-12-02 18:34:07,322 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:07 WrapperNode [2023-12-02 18:34:07,322 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 18:34:07,323 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 18:34:07,323 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 18:34:07,323 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 18:34:07,329 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:07" (1/1) ... [2023-12-02 18:34:07,354 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:07" (1/1) ... [2023-12-02 18:34:07,398 INFO L138 Inliner]: procedures = 279, calls = 70, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 382 [2023-12-02 18:34:07,398 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 18:34:07,399 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 18:34:07,399 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 18:34:07,399 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 18:34:07,408 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:07" (1/1) ... [2023-12-02 18:34:07,408 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:07" (1/1) ... [2023-12-02 18:34:07,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:07" (1/1) ... [2023-12-02 18:34:07,415 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:07" (1/1) ... [2023-12-02 18:34:07,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:07" (1/1) ... [2023-12-02 18:34:07,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:07" (1/1) ... [2023-12-02 18:34:07,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:07" (1/1) ... [2023-12-02 18:34:07,467 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:07" (1/1) ... [2023-12-02 18:34:07,481 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 18:34:07,482 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 18:34:07,482 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 18:34:07,482 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 18:34:07,483 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:07" (1/1) ... [2023-12-02 18:34:07,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 18:34:07,499 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 18:34:07,514 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 18:34:07,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ce89ae76-1b12-42b9-885f-0a4bd81daef9/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 18:34:07,552 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 18:34:07,552 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-12-02 18:34:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-12-02 18:34:07,553 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-12-02 18:34:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 18:34:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-12-02 18:34:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 18:34:07,553 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-12-02 18:34:07,554 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-12-02 18:34:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 18:34:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-12-02 18:34:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 18:34:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 18:34:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-12-02 18:34:07,554 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 18:34:07,555 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 18:34:07,555 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 18:34:07,557 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-12-02 18:34:07,724 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 18:34:07,726 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 18:34:08,269 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 18:34:08,303 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 18:34:08,303 INFO L309 CfgBuilder]: Removed 16 assume(true) statements. [2023-12-02 18:34:08,305 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:34:08 BoogieIcfgContainer [2023-12-02 18:34:08,305 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 18:34:08,307 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 18:34:08,308 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 18:34:08,311 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 18:34:08,311 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 06:34:06" (1/3) ... [2023-12-02 18:34:08,311 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134cbb82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:34:08, skipping insertion in model container [2023-12-02 18:34:08,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 06:34:07" (2/3) ... [2023-12-02 18:34:08,312 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@134cbb82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 06:34:08, skipping insertion in model container [2023-12-02 18:34:08,312 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 06:34:08" (3/3) ... [2023-12-02 18:34:08,313 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_86-lists_racing.i [2023-12-02 18:34:08,322 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 18:34:08,332 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 18:34:08,332 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2023-12-02 18:34:08,332 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 18:34:08,499 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-02 18:34:08,538 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 389 places, 413 transitions, 846 flow [2023-12-02 18:34:20,055 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 612527 states, 612080 states have (on average 3.131593909292903) internal successors, (1916786), 612526 states have internal predecessors, (1916786), 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) [2023-12-02 18:34:20,081 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 18:34:20,089 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;@7ee93fe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 18:34:20,089 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-12-02 18:34:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand has 612527 states, 612080 states have (on average 3.131593909292903) internal successors, (1916786), 612526 states have internal predecessors, (1916786), 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) [2023-12-02 18:34:20,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-12-02 18:34:20,752 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:20,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:20,753 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-12-02 18:34:20,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:20,759 INFO L85 PathProgramCache]: Analyzing trace with hash 299452177, now seen corresponding path program 1 times [2023-12-02 18:34:20,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:20,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274276737] [2023-12-02 18:34:20,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:20,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:21,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:21,572 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:21,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274276737] [2023-12-02 18:34:21,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274276737] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:21,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:21,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:34:21,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320677056] [2023-12-02 18:34:21,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:21,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:34:21,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:21,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:34:21,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:34:22,359 INFO L87 Difference]: Start difference. First operand has 612527 states, 612080 states have (on average 3.131593909292903) internal successors, (1916786), 612526 states have internal predecessors, (1916786), 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 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 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) [2023-12-02 18:34:28,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:28,916 INFO L93 Difference]: Finished difference Result 601279 states and 1777691 transitions. [2023-12-02 18:34:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:34:28,918 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 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 44 [2023-12-02 18:34:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:31,293 INFO L225 Difference]: With dead ends: 601279 [2023-12-02 18:34:31,293 INFO L226 Difference]: Without dead ends: 598075 [2023-12-02 18:34:31,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:34:31,298 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 1 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:31,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1116 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-12-02 18:34:33,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598075 states. [2023-12-02 18:34:46,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598075 to 598075. [2023-12-02 18:34:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598075 states, 597445 states have (on average 2.9598791520558376) internal successors, (1768365), 598074 states have internal predecessors, (1768365), 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) [2023-12-02 18:34:50,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598075 states to 598075 states and 1768365 transitions. [2023-12-02 18:34:50,392 INFO L78 Accepts]: Start accepts. Automaton has 598075 states and 1768365 transitions. Word has length 44 [2023-12-02 18:34:50,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:34:50,393 INFO L495 AbstractCegarLoop]: Abstraction has 598075 states and 1768365 transitions. [2023-12-02 18:34:50,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.8) internal successors, (44), 6 states have internal predecessors, (44), 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) [2023-12-02 18:34:50,393 INFO L276 IsEmpty]: Start isEmpty. Operand 598075 states and 1768365 transitions. [2023-12-02 18:34:50,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2023-12-02 18:34:50,397 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:34:50,397 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:34:50,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 18:34:50,398 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-12-02 18:34:50,399 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:34:50,399 INFO L85 PathProgramCache]: Analyzing trace with hash 329660795, now seen corresponding path program 1 times [2023-12-02 18:34:50,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:34:50,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43221329] [2023-12-02 18:34:50,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:34:50,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:34:50,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:34:50,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:34:50,481 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:34:50,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43221329] [2023-12-02 18:34:50,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43221329] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:34:50,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:34:50,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-12-02 18:34:50,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068333416] [2023-12-02 18:34:50,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:34:50,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 18:34:50,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:34:50,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 18:34:50,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:34:50,485 INFO L87 Difference]: Start difference. First operand 598075 states and 1768365 transitions. Second operand has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-12-02 18:34:54,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:34:54,318 INFO L93 Difference]: Finished difference Result 598113 states and 1768403 transitions. [2023-12-02 18:34:54,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 18:34:54,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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 47 [2023-12-02 18:34:54,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:34:57,018 INFO L225 Difference]: With dead ends: 598113 [2023-12-02 18:34:57,018 INFO L226 Difference]: Without dead ends: 598113 [2023-12-02 18:34:57,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 18:34:57,020 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 37 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 18:34:57,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 714 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 18:34:58,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598113 states. [2023-12-02 18:35:11,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598113 to 598076. [2023-12-02 18:35:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598076 states, 597446 states have (on average 2.959875871626892) internal successors, (1768366), 598075 states have internal predecessors, (1768366), 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) [2023-12-02 18:35:14,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598076 states to 598076 states and 1768366 transitions. [2023-12-02 18:35:14,883 INFO L78 Accepts]: Start accepts. Automaton has 598076 states and 1768366 transitions. Word has length 47 [2023-12-02 18:35:14,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:35:14,883 INFO L495 AbstractCegarLoop]: Abstraction has 598076 states and 1768366 transitions. [2023-12-02 18:35:14,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.666666666666666) internal successors, (47), 3 states have internal predecessors, (47), 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) [2023-12-02 18:35:14,884 INFO L276 IsEmpty]: Start isEmpty. Operand 598076 states and 1768366 transitions. [2023-12-02 18:35:14,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-12-02 18:35:14,886 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:35:14,886 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:35:14,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 18:35:14,886 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-12-02 18:35:14,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:35:14,887 INFO L85 PathProgramCache]: Analyzing trace with hash -975168941, now seen corresponding path program 1 times [2023-12-02 18:35:14,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:35:14,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157694570] [2023-12-02 18:35:14,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:35:14,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:35:14,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:35:15,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:35:15,255 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:35:15,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157694570] [2023-12-02 18:35:15,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157694570] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:35:15,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:35:15,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:35:15,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302444542] [2023-12-02 18:35:15,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:35:15,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:35:15,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:35:15,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:35:15,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:35:15,258 INFO L87 Difference]: Start difference. First operand 598076 states and 1768366 transitions. Second operand has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2023-12-02 18:35:19,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:35:19,547 INFO L93 Difference]: Finished difference Result 598075 states and 1768365 transitions. [2023-12-02 18:35:19,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:35:19,548 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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 52 [2023-12-02 18:35:19,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:35:21,723 INFO L225 Difference]: With dead ends: 598075 [2023-12-02 18:35:21,723 INFO L226 Difference]: Without dead ends: 598075 [2023-12-02 18:35:21,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:35:21,725 INFO L413 NwaCegarLoop]: 365 mSDtfsCounter, 4 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:35:21,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 615 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:35:23,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598075 states. [2023-12-02 18:35:35,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598075 to 598075. [2023-12-02 18:35:36,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 598075 states, 597446 states have (on average 2.959874197835453) internal successors, (1768365), 598074 states have internal predecessors, (1768365), 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) [2023-12-02 18:35:39,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 598075 states to 598075 states and 1768365 transitions. [2023-12-02 18:35:39,369 INFO L78 Accepts]: Start accepts. Automaton has 598075 states and 1768365 transitions. Word has length 52 [2023-12-02 18:35:39,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 18:35:39,369 INFO L495 AbstractCegarLoop]: Abstraction has 598075 states and 1768365 transitions. [2023-12-02 18:35:39,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.4) internal successors, (52), 6 states have internal predecessors, (52), 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) [2023-12-02 18:35:39,370 INFO L276 IsEmpty]: Start isEmpty. Operand 598075 states and 1768365 transitions. [2023-12-02 18:35:39,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2023-12-02 18:35:39,371 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 18:35:39,371 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 18:35:39,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 18:35:39,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr7ASSERT_VIOLATIONDATA_RACE (and 31 more)] === [2023-12-02 18:35:39,372 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 18:35:39,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1358045351, now seen corresponding path program 1 times [2023-12-02 18:35:39,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 18:35:39,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834309483] [2023-12-02 18:35:39,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 18:35:39,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 18:35:39,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 18:35:39,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-12-02 18:35:39,811 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 18:35:39,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834309483] [2023-12-02 18:35:39,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834309483] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 18:35:39,811 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 18:35:39,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 18:35:39,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024890752] [2023-12-02 18:35:39,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 18:35:39,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 18:35:39,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 18:35:39,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 18:35:39,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:35:39,814 INFO L87 Difference]: Start difference. First operand 598075 states and 1768365 transitions. Second operand has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 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) [2023-12-02 18:35:43,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 18:35:43,987 INFO L93 Difference]: Finished difference Result 598074 states and 1768364 transitions. [2023-12-02 18:35:43,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 18:35:43,988 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.4) internal successors, (62), 6 states have internal predecessors, (62), 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 62 [2023-12-02 18:35:43,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 18:35:46,126 INFO L225 Difference]: With dead ends: 598074 [2023-12-02 18:35:46,127 INFO L226 Difference]: Without dead ends: 598074 [2023-12-02 18:35:46,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 18:35:46,128 INFO L413 NwaCegarLoop]: 364 mSDtfsCounter, 3 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 605 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-12-02 18:35:46,129 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 605 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-12-02 18:35:47,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598074 states.