./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 30e01a73 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_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire --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 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 20:40:11,572 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 20:40:11,693 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-23 20:40:11,701 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 20:40:11,702 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 20:40:11,745 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 20:40:11,746 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 20:40:11,746 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 20:40:11,748 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 20:40:11,753 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 20:40:11,753 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 20:40:11,755 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 20:40:11,755 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 20:40:11,757 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 20:40:11,757 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 20:40:11,758 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 20:40:11,759 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 20:40:11,759 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 20:40:11,760 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 20:40:11,760 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 20:40:11,761 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 20:40:11,762 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 20:40:11,763 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 20:40:11,763 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 20:40:11,764 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 20:40:11,764 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 20:40:11,765 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 20:40:11,765 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 20:40:11,766 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 20:40:11,766 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 20:40:11,768 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 20:40:11,768 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-23 20:40:11,769 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-23 20:40:11,769 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 20:40:11,769 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 20:40:11,770 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 20:40:11,770 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 20:40:11,770 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 20:40:11,770 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:40:11,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 20:40:11,771 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 20:40:11,771 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 20:40:11,772 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 20:40:11,772 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 20:40:11,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 20:40:11,773 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 20:40:11,773 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 20:40:11,773 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 20:40:11,773 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_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 50de8acec85b0b2508f1f33521d9ab6717fa1b5141d6b9e2d08fcb4af894112b [2023-11-23 20:40:12,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 20:40:12,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 20:40:12,185 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 20:40:12,186 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 20:40:12,187 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 20:40:12,188 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2023-11-23 20:40:15,405 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 20:40:15,813 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 20:40:15,814 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/sv-benchmarks/c/goblint-regression/28-race_reach_04-munge_racefree.i [2023-11-23 20:40:15,835 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire/data/88aef0379/8b75bf59eb424a4f928456d7095b1693/FLAG15c66f454 [2023-11-23 20:40:15,852 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire/data/88aef0379/8b75bf59eb424a4f928456d7095b1693 [2023-11-23 20:40:15,858 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 20:40:15,859 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 20:40:15,863 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 20:40:15,863 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 20:40:15,869 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 20:40:15,870 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,871 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fddde3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:15, skipping insertion in model container [2023-11-23 20:40:15,871 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 08:40:15" (1/1) ... [2023-11-23 20:40:15,937 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 20:40:16,431 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:40:16,450 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 20:40:16,496 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 20:40:16,550 INFO L206 MainTranslator]: Completed translation [2023-11-23 20:40:16,550 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16 WrapperNode [2023-11-23 20:40:16,551 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 20:40:16,552 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 20:40:16,552 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 20:40:16,552 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 20:40:16,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,577 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,619 INFO L138 Inliner]: procedures = 173, calls = 42, calls flagged for inlining = 6, calls inlined = 8, statements flattened = 273 [2023-11-23 20:40:16,624 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 20:40:16,625 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 20:40:16,625 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 20:40:16,626 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 20:40:16,636 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,636 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,642 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,642 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,654 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,660 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,663 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,665 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,670 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 20:40:16,671 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 20:40:16,671 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 20:40:16,671 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 20:40:16,672 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (1/1) ... [2023-11-23 20:40:16,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 20:40:16,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 20:40:16,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 20:40:16,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_31ebb1d7-8515-4f50-88d8-92b503e71145/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 20:40:16,758 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-23 20:40:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-11-23 20:40:16,759 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-11-23 20:40:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-23 20:40:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-23 20:40:16,759 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 20:40:16,760 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-23 20:40:16,760 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-11-23 20:40:16,760 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-11-23 20:40:16,760 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-23 20:40:16,760 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 20:40:16,761 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2023-11-23 20:40:16,761 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 20:40:16,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 20:40:16,763 WARN L213 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-23 20:40:16,958 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 20:40:16,961 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 20:40:17,488 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 20:40:17,534 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 20:40:17,534 INFO L309 CfgBuilder]: Removed 24 assume(true) statements. [2023-11-23 20:40:17,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:17 BoogieIcfgContainer [2023-11-23 20:40:17,536 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 20:40:17,538 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 20:40:17,539 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 20:40:17,542 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 20:40:17,542 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 08:40:15" (1/3) ... [2023-11-23 20:40:17,543 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbeb07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:40:17, skipping insertion in model container [2023-11-23 20:40:17,543 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 08:40:16" (2/3) ... [2023-11-23 20:40:17,544 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fbeb07b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 08:40:17, skipping insertion in model container [2023-11-23 20:40:17,544 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 08:40:17" (3/3) ... [2023-11-23 20:40:17,545 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_04-munge_racefree.i [2023-11-23 20:40:17,554 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-23 20:40:17,566 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 20:40:17,566 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2023-11-23 20:40:17,566 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-23 20:40:17,688 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-11-23 20:40:17,740 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 250 places, 279 transitions, 578 flow [2023-11-23 20:40:25,670 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 237255 states, 236989 states have (on average 3.3403702281540495) internal successors, (791631), 237254 states have internal predecessors, (791631), 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) [2023-11-23 20:40:25,691 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 20:40:25,714 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;@1475e1b3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 20:40:25,714 INFO L358 AbstractCegarLoop]: Starting to check reachability of 24 error locations. [2023-11-23 20:40:26,063 INFO L276 IsEmpty]: Start isEmpty. Operand has 237255 states, 236989 states have (on average 3.3403702281540495) internal successors, (791631), 237254 states have internal predecessors, (791631), 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) [2023-11-23 20:40:26,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2023-11-23 20:40:26,082 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:26,083 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] [2023-11-23 20:40:26,084 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-23 20:40:26,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:26,089 INFO L85 PathProgramCache]: Analyzing trace with hash -861736260, now seen corresponding path program 1 times [2023-11-23 20:40:26,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:26,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425716412] [2023-11-23 20:40:26,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:26,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:26,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 20:40:26,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 20:40:26,528 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 20:40:26,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425716412] [2023-11-23 20:40:26,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425716412] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 20:40:26,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 20:40:26,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-23 20:40:26,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778660759] [2023-11-23 20:40:26,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 20:40:26,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-23 20:40:26,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 20:40:26,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-23 20:40:26,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-23 20:40:27,534 INFO L87 Difference]: Start difference. First operand has 237255 states, 236989 states have (on average 3.3403702281540495) internal successors, (791631), 237254 states have internal predecessors, (791631), 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 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-23 20:40:31,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 20:40:31,316 INFO L93 Difference]: Finished difference Result 217558 states and 641061 transitions. [2023-11-23 20:40:31,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-23 20:40:31,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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 49 [2023-11-23 20:40:31,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 20:40:32,596 INFO L225 Difference]: With dead ends: 217558 [2023-11-23 20:40:32,597 INFO L226 Difference]: Without dead ends: 210246 [2023-11-23 20:40:32,599 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 [2023-11-23 20:40:32,603 INFO L413 NwaCegarLoop]: 220 mSDtfsCounter, 78 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 432 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 20:40:32,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 432 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 20:40:33,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210246 states. [2023-11-23 20:40:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210246 to 210246. [2023-11-23 20:40:41,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210246 states, 209917 states have (on average 2.949360937894501) internal successors, (619121), 210245 states have internal predecessors, (619121), 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) [2023-11-23 20:40:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210246 states to 210246 states and 619121 transitions. [2023-11-23 20:40:42,413 INFO L78 Accepts]: Start accepts. Automaton has 210246 states and 619121 transitions. Word has length 49 [2023-11-23 20:40:42,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 20:40:42,414 INFO L495 AbstractCegarLoop]: Abstraction has 210246 states and 619121 transitions. [2023-11-23 20:40:42,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 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) [2023-11-23 20:40:42,415 INFO L276 IsEmpty]: Start isEmpty. Operand 210246 states and 619121 transitions. [2023-11-23 20:40:42,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2023-11-23 20:40:42,418 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 20:40:42,418 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2023-11-23 20:40:42,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 20:40:42,419 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [t2_funErr4ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, t2_funErr2ASSERT_VIOLATIONDATA_RACE, t2_funErr1ASSERT_VIOLATIONDATA_RACE (and 20 more)] === [2023-11-23 20:40:42,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 20:40:42,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1262721645, now seen corresponding path program 1 times [2023-11-23 20:40:42,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 20:40:42,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876544650] [2023-11-23 20:40:42,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 20:40:42,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 20:40:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:40:42,482 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-23 20:40:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-23 20:40:42,536 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-23 20:40:42,536 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-23 20:40:42,538 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 24 remaining) [2023-11-23 20:40:42,540 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (22 of 24 remaining) [2023-11-23 20:40:42,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (21 of 24 remaining) [2023-11-23 20:40:42,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (20 of 24 remaining) [2023-11-23 20:40:42,541 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (19 of 24 remaining) [2023-11-23 20:40:42,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (18 of 24 remaining) [2023-11-23 20:40:42,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE (17 of 24 remaining) [2023-11-23 20:40:42,542 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE (16 of 24 remaining) [2023-11-23 20:40:42,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (15 of 24 remaining) [2023-11-23 20:40:42,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (14 of 24 remaining) [2023-11-23 20:40:42,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (13 of 24 remaining) [2023-11-23 20:40:42,543 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (12 of 24 remaining) [2023-11-23 20:40:42,544 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (11 of 24 remaining) [2023-11-23 20:40:43,365 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (10 of 24 remaining) [2023-11-23 20:40:43,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr4ASSERT_VIOLATIONDATA_RACE (9 of 24 remaining) [2023-11-23 20:40:43,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr0ASSERT_VIOLATIONDATA_RACE (8 of 24 remaining) [2023-11-23 20:40:43,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr2ASSERT_VIOLATIONDATA_RACE (7 of 24 remaining) [2023-11-23 20:40:43,366 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr1ASSERT_VIOLATIONDATA_RACE (6 of 24 remaining) [2023-11-23 20:40:43,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2_funErr3ASSERT_VIOLATIONDATA_RACE (5 of 24 remaining) [2023-11-23 20:40:43,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr4ASSERT_VIOLATIONDATA_RACE (4 of 24 remaining) [2023-11-23 20:40:43,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr0ASSERT_VIOLATIONDATA_RACE (3 of 24 remaining) [2023-11-23 20:40:43,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr2ASSERT_VIOLATIONDATA_RACE (2 of 24 remaining) [2023-11-23 20:40:43,367 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr1ASSERT_VIOLATIONDATA_RACE (1 of 24 remaining) [2023-11-23 20:40:43,368 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1_funErr3ASSERT_VIOLATIONDATA_RACE (0 of 24 remaining) [2023-11-23 20:40:43,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 20:40:43,371 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-23 20:40:43,375 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-23 20:40:43,375 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-23 20:40:43,458 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-11-23 20:40:43,466 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 400 places, 455 transitions, 954 flow