./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.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_8307f578-ee6d-4fea-896e-37b06788343e/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8307f578-ee6d-4fea-896e-37b06788343e/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_8307f578-ee6d-4fea-896e-37b06788343e/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8307f578-ee6d-4fea-896e-37b06788343e/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8307f578-ee6d-4fea-896e-37b06788343e/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_8307f578-ee6d-4fea-896e-37b06788343e/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 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 13:53:30,441 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 13:53:30,512 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8307f578-ee6d-4fea-896e-37b06788343e/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-12-02 13:53:30,519 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 13:53:30,520 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 13:53:30,548 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 13:53:30,549 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 13:53:30,549 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 13:53:30,550 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 13:53:30,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 13:53:30,551 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 13:53:30,552 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 13:53:30,552 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 13:53:30,553 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 13:53:30,553 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 13:53:30,554 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 13:53:30,554 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 13:53:30,555 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 13:53:30,555 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 13:53:30,556 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 13:53:30,557 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 13:53:30,557 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 13:53:30,558 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 13:53:30,558 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 13:53:30,559 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 13:53:30,559 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 13:53:30,560 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 13:53:30,560 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 13:53:30,561 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 13:53:30,561 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 13:53:30,561 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 13:53:30,562 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-12-02 13:53:30,562 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 13:53:30,562 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 13:53:30,562 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 13:53:30,563 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 13:53:30,563 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 13:53:30,563 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 13:53:30,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:53:30,564 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 13:53:30,564 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 13:53:30,564 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 13:53:30,565 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 13:53:30,565 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 13:53:30,565 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 13:53:30,565 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 13:53:30,565 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 13:53:30,566 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 13:53:30,566 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_8307f578-ee6d-4fea-896e-37b06788343e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8307f578-ee6d-4fea-896e-37b06788343e/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 13ffae79fd42fd88852ffaba2bbbf2601df90fdda2b5dc6bd9b6228e2cf540c7 [2023-12-02 13:53:30,801 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 13:53:30,822 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 13:53:30,825 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 13:53:30,826 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 13:53:30,827 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 13:53:30,828 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8307f578-ee6d-4fea-896e-37b06788343e/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2023-12-02 13:53:33,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 13:53:33,871 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 13:53:33,872 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8307f578-ee6d-4fea-896e-37b06788343e/sv-benchmarks/c/pthread-ext/39_rand_lock_p0_vs.i [2023-12-02 13:53:33,888 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8307f578-ee6d-4fea-896e-37b06788343e/bin/utaipan-verify-nQ1chXbOIh/data/bfcbde26b/1be9e60801da4c7f9903aeafd8fe0503/FLAG853df0e86 [2023-12-02 13:53:33,902 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8307f578-ee6d-4fea-896e-37b06788343e/bin/utaipan-verify-nQ1chXbOIh/data/bfcbde26b/1be9e60801da4c7f9903aeafd8fe0503 [2023-12-02 13:53:33,905 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 13:53:33,907 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 13:53:33,908 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 13:53:33,908 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 13:53:33,914 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 13:53:33,915 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:53:33" (1/1) ... [2023-12-02 13:53:33,916 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3d7578f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:33, skipping insertion in model container [2023-12-02 13:53:33,916 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 01:53:33" (1/1) ... [2023-12-02 13:53:33,964 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 13:53:34,262 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:53:34,271 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 13:53:34,312 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 13:53:34,339 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:53:34,339 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 13:53:34,345 INFO L206 MainTranslator]: Completed translation [2023-12-02 13:53:34,345 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:34 WrapperNode [2023-12-02 13:53:34,345 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 13:53:34,346 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 13:53:34,346 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 13:53:34,347 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 13:53:34,353 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:34" (1/1) ... [2023-12-02 13:53:34,367 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:34" (1/1) ... [2023-12-02 13:53:34,388 INFO L138 Inliner]: procedures = 175, calls = 21, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 98 [2023-12-02 13:53:34,389 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 13:53:34,389 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 13:53:34,390 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 13:53:34,390 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 13:53:34,397 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:34" (1/1) ... [2023-12-02 13:53:34,397 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:34" (1/1) ... [2023-12-02 13:53:34,400 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:34" (1/1) ... [2023-12-02 13:53:34,401 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:34" (1/1) ... [2023-12-02 13:53:34,406 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:34" (1/1) ... [2023-12-02 13:53:34,410 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:34" (1/1) ... [2023-12-02 13:53:34,412 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:34" (1/1) ... [2023-12-02 13:53:34,414 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:34" (1/1) ... [2023-12-02 13:53:34,417 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 13:53:34,418 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 13:53:34,418 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 13:53:34,418 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 13:53:34,419 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:34" (1/1) ... [2023-12-02 13:53:34,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 13:53:34,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8307f578-ee6d-4fea-896e-37b06788343e/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 13:53:34,446 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8307f578-ee6d-4fea-896e-37b06788343e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 13:53:34,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8307f578-ee6d-4fea-896e-37b06788343e/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 13:53:34,474 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-12-02 13:53:34,474 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-12-02 13:53:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 13:53:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 13:53:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 13:53:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 13:53:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 13:53:34,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 13:53:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 13:53:34,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 13:53:34,476 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 13:53:34,478 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 13:53:34,590 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 13:53:34,592 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 13:53:34,762 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 13:53:34,838 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 13:53:34,838 INFO L309 CfgBuilder]: Removed 2 assume(true) statements. [2023-12-02 13:53:34,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:53:34 BoogieIcfgContainer [2023-12-02 13:53:34,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 13:53:34,843 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 13:53:34,843 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 13:53:34,847 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 13:53:34,847 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 01:53:33" (1/3) ... [2023-12-02 13:53:34,848 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e0438d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:53:34, skipping insertion in model container [2023-12-02 13:53:34,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 01:53:34" (2/3) ... [2023-12-02 13:53:34,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41e0438d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 01:53:34, skipping insertion in model container [2023-12-02 13:53:34,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 01:53:34" (3/3) ... [2023-12-02 13:53:34,850 INFO L112 eAbstractionObserver]: Analyzing ICFG 39_rand_lock_p0_vs.i [2023-12-02 13:53:34,859 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 13:53:34,871 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 13:53:34,871 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-12-02 13:53:34,871 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 13:53:34,927 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 13:53:34,958 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 73 places, 73 transitions, 150 flow [2023-12-02 13:53:35,032 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 606 states, 591 states have (on average 2.032148900169205) internal successors, (1201), 605 states have internal predecessors, (1201), 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 13:53:35,051 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:53:35,057 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;@439358a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:53:35,057 INFO L358 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2023-12-02 13:53:35,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 606 states, 591 states have (on average 2.032148900169205) internal successors, (1201), 605 states have internal predecessors, (1201), 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 13:53:35,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 13:53:35,068 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:35,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:53:35,070 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 11 more)] === [2023-12-02 13:53:35,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:35,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1224367741, now seen corresponding path program 1 times [2023-12-02 13:53:35,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:35,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6540092] [2023-12-02 13:53:35,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:35,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:53:35,199 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:53:35,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:53:35,243 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 13:53:35,245 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 13:53:35,247 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 15 remaining) [2023-12-02 13:53:35,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 15 remaining) [2023-12-02 13:53:35,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 15 remaining) [2023-12-02 13:53:35,249 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 15 remaining) [2023-12-02 13:53:35,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 15 remaining) [2023-12-02 13:53:35,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 15 remaining) [2023-12-02 13:53:35,250 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 15 remaining) [2023-12-02 13:53:35,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 15 remaining) [2023-12-02 13:53:35,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 15 remaining) [2023-12-02 13:53:35,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 15 remaining) [2023-12-02 13:53:35,251 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 15 remaining) [2023-12-02 13:53:35,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 15 remaining) [2023-12-02 13:53:35,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 15 remaining) [2023-12-02 13:53:35,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 15 remaining) [2023-12-02 13:53:35,252 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 15 remaining) [2023-12-02 13:53:35,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 13:53:35,257 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-12-02 13:53:35,260 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-02 13:53:35,260 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-12-02 13:53:35,300 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 13:53:35,305 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 121 places, 121 transitions, 252 flow [2023-12-02 13:53:36,269 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 29698 states, 29564 states have (on average 3.0366323907455013) internal successors, (89775), 29697 states have internal predecessors, (89775), 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 13:53:36,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:53:36,272 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;@439358a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:53:36,272 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-12-02 13:53:36,338 INFO L276 IsEmpty]: Start isEmpty. Operand has 29698 states, 29564 states have (on average 3.0366323907455013) internal successors, (89775), 29697 states have internal predecessors, (89775), 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 13:53:36,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 13:53:36,341 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:36,341 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] [2023-12-02 13:53:36,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-12-02 13:53:36,342 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:36,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1185049378, now seen corresponding path program 1 times [2023-12-02 13:53:36,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:36,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689923525] [2023-12-02 13:53:36,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:36,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:36,488 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 13:53:36,488 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:53:36,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689923525] [2023-12-02 13:53:36,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689923525] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:36,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:53:36,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:53:36,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289940565] [2023-12-02 13:53:36,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:36,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:53:36,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:36,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:53:36,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:53:36,598 INFO L87 Difference]: Start difference. First operand has 29698 states, 29564 states have (on average 3.0366323907455013) internal successors, (89775), 29697 states have internal predecessors, (89775), 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 23.0) internal successors, (23), 2 states have internal predecessors, (23), 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 13:53:36,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:53:36,826 INFO L93 Difference]: Finished difference Result 13096 states and 37376 transitions. [2023-12-02 13:53:36,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:53:36,828 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 23.0) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2023-12-02 13:53:36,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:53:36,931 INFO L225 Difference]: With dead ends: 13096 [2023-12-02 13:53:36,931 INFO L226 Difference]: Without dead ends: 13096 [2023-12-02 13:53:36,932 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 [2023-12-02 13:53:36,935 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:53:36,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 90 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:53:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13096 states. [2023-12-02 13:53:37,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13096 to 13096. [2023-12-02 13:53:37,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13096 states, 13092 states have (on average 2.8548732050106937) internal successors, (37376), 13095 states have internal predecessors, (37376), 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 13:53:37,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13096 states to 13096 states and 37376 transitions. [2023-12-02 13:53:37,554 INFO L78 Accepts]: Start accepts. Automaton has 13096 states and 37376 transitions. Word has length 23 [2023-12-02 13:53:37,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:53:37,555 INFO L495 AbstractCegarLoop]: Abstraction has 13096 states and 37376 transitions. [2023-12-02 13:53:37,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 23.0) internal successors, (23), 2 states have internal predecessors, (23), 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 13:53:37,555 INFO L276 IsEmpty]: Start isEmpty. Operand 13096 states and 37376 transitions. [2023-12-02 13:53:37,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 13:53:37,557 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:37,557 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] [2023-12-02 13:53:37,557 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 13:53:37,558 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-12-02 13:53:37,558 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:37,559 INFO L85 PathProgramCache]: Analyzing trace with hash 825644691, now seen corresponding path program 1 times [2023-12-02 13:53:37,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:37,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269297160] [2023-12-02 13:53:37,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:37,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:37,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:53:37,625 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 13:53:37,626 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:53:37,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269297160] [2023-12-02 13:53:37,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269297160] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:53:37,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:53:37,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:53:37,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498224285] [2023-12-02 13:53:37,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:53:37,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:53:37,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:53:37,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:53:37,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:53:37,630 INFO L87 Difference]: Start difference. First operand 13096 states and 37376 transitions. Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 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 13:53:37,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:53:37,801 INFO L93 Difference]: Finished difference Result 16137 states and 45917 transitions. [2023-12-02 13:53:37,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:53:37,802 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-12-02 13:53:37,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:53:37,882 INFO L225 Difference]: With dead ends: 16137 [2023-12-02 13:53:37,882 INFO L226 Difference]: Without dead ends: 16137 [2023-12-02 13:53:37,882 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 [2023-12-02 13:53:37,884 INFO L413 NwaCegarLoop]: 123 mSDtfsCounter, 80 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:53:37,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [80 Valid, 207 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:53:37,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16137 states. [2023-12-02 13:53:38,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16137 to 12777. [2023-12-02 13:53:38,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12777 states, 12774 states have (on average 2.8521214967903554) internal successors, (36433), 12776 states have internal predecessors, (36433), 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 13:53:38,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12777 states to 12777 states and 36433 transitions. [2023-12-02 13:53:38,433 INFO L78 Accepts]: Start accepts. Automaton has 12777 states and 36433 transitions. Word has length 26 [2023-12-02 13:53:38,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:53:38,433 INFO L495 AbstractCegarLoop]: Abstraction has 12777 states and 36433 transitions. [2023-12-02 13:53:38,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 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 13:53:38,434 INFO L276 IsEmpty]: Start isEmpty. Operand 12777 states and 36433 transitions. [2023-12-02 13:53:38,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2023-12-02 13:53:38,436 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:53:38,436 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 13:53:38,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 13:53:38,437 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 18 more)] === [2023-12-02 13:53:38,437 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:53:38,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1345115050, now seen corresponding path program 1 times [2023-12-02 13:53:38,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:53:38,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609883329] [2023-12-02 13:53:38,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:53:38,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:53:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:53:38,456 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-12-02 13:53:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-12-02 13:53:38,474 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-12-02 13:53:38,474 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-12-02 13:53:38,475 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 22 remaining) [2023-12-02 13:53:38,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (20 of 22 remaining) [2023-12-02 13:53:38,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (19 of 22 remaining) [2023-12-02 13:53:38,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (18 of 22 remaining) [2023-12-02 13:53:38,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (17 of 22 remaining) [2023-12-02 13:53:38,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (16 of 22 remaining) [2023-12-02 13:53:38,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (15 of 22 remaining) [2023-12-02 13:53:38,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (14 of 22 remaining) [2023-12-02 13:53:38,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (13 of 22 remaining) [2023-12-02 13:53:38,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (12 of 22 remaining) [2023-12-02 13:53:38,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (11 of 22 remaining) [2023-12-02 13:53:38,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (10 of 22 remaining) [2023-12-02 13:53:38,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (9 of 22 remaining) [2023-12-02 13:53:38,477 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (8 of 22 remaining) [2023-12-02 13:53:38,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (7 of 22 remaining) [2023-12-02 13:53:38,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 22 remaining) [2023-12-02 13:53:38,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (5 of 22 remaining) [2023-12-02 13:53:38,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 22 remaining) [2023-12-02 13:53:38,478 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (3 of 22 remaining) [2023-12-02 13:53:38,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err4ASSERT_VIOLATIONDATA_RACE (2 of 22 remaining) [2023-12-02 13:53:38,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err5ASSERT_VIOLATIONDATA_RACE (1 of 22 remaining) [2023-12-02 13:53:38,479 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err6ASSERT_VIOLATIONDATA_RACE (0 of 22 remaining) [2023-12-02 13:53:38,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-12-02 13:53:38,480 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-12-02 13:53:38,480 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-12-02 13:53:38,480 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-12-02 13:53:38,521 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-12-02 13:53:38,525 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 169 places, 169 transitions, 356 flow [2023-12-02 13:54:13,579 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1385912 states, 1384819 states have (on average 4.0488424841080315) internal successors, (5606914), 1385911 states have internal predecessors, (5606914), 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 13:54:13,580 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 13:54:13,581 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;@439358a7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 13:54:13,581 INFO L358 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2023-12-02 13:54:15,453 INFO L276 IsEmpty]: Start isEmpty. Operand has 1385912 states, 1384819 states have (on average 4.0488424841080315) internal successors, (5606914), 1385911 states have internal predecessors, (5606914), 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 13:54:15,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-12-02 13:54:15,455 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:54:15,455 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] [2023-12-02 13:54:15,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-12-02 13:54:15,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:54:15,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1827475944, now seen corresponding path program 1 times [2023-12-02 13:54:15,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:54:15,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242965437] [2023-12-02 13:54:15,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:15,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:54:15,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:15,485 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 13:54:15,486 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:54:15,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242965437] [2023-12-02 13:54:15,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242965437] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:54:15,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:54:15,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-12-02 13:54:15,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969520234] [2023-12-02 13:54:15,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:54:15,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-12-02 13:54:15,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:54:15,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-12-02 13:54:15,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-12-02 13:54:17,355 INFO L87 Difference]: Start difference. First operand has 1385912 states, 1384819 states have (on average 4.0488424841080315) internal successors, (5606914), 1385911 states have internal predecessors, (5606914), 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 23.0) internal successors, (23), 2 states have internal predecessors, (23), 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 13:54:26,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:54:26,612 INFO L93 Difference]: Finished difference Result 523496 states and 2018176 transitions. [2023-12-02 13:54:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-12-02 13:54:26,613 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 23.0) internal successors, (23), 2 states have internal predecessors, (23), 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 23 [2023-12-02 13:54:26,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:54:31,179 INFO L225 Difference]: With dead ends: 523496 [2023-12-02 13:54:31,180 INFO L226 Difference]: Without dead ends: 523496 [2023-12-02 13:54:31,180 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 [2023-12-02 13:54:31,184 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 13:54:31,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 126 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 13:54:32,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523496 states. [2023-12-02 13:54:47,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523496 to 523496. [2023-12-02 13:54:48,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523496 states, 523488 states have (on average 3.8552478757870285) internal successors, (2018176), 523495 states have internal predecessors, (2018176), 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 13:54:52,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523496 states to 523496 states and 2018176 transitions. [2023-12-02 13:54:52,053 INFO L78 Accepts]: Start accepts. Automaton has 523496 states and 2018176 transitions. Word has length 23 [2023-12-02 13:54:52,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 13:54:52,053 INFO L495 AbstractCegarLoop]: Abstraction has 523496 states and 2018176 transitions. [2023-12-02 13:54:52,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 23.0) internal successors, (23), 2 states have internal predecessors, (23), 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 13:54:52,054 INFO L276 IsEmpty]: Start isEmpty. Operand 523496 states and 2018176 transitions. [2023-12-02 13:54:52,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-12-02 13:54:52,055 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 13:54:52,055 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] [2023-12-02 13:54:52,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-12-02 13:54:52,056 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE (and 25 more)] === [2023-12-02 13:54:52,056 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 13:54:52,056 INFO L85 PathProgramCache]: Analyzing trace with hash 670255778, now seen corresponding path program 1 times [2023-12-02 13:54:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 13:54:52,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992015315] [2023-12-02 13:54:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 13:54:52,057 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 13:54:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 13:54:52,126 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 13:54:52,132 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 13:54:52,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992015315] [2023-12-02 13:54:52,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992015315] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 13:54:52,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 13:54:52,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 13:54:52,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840327894] [2023-12-02 13:54:52,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 13:54:52,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 13:54:52,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 13:54:52,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 13:54:52,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 13:54:52,141 INFO L87 Difference]: Start difference. First operand 523496 states and 2018176 transitions. Second operand has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 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 13:55:00,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 13:55:00,938 INFO L93 Difference]: Finished difference Result 758708 states and 2901320 transitions. [2023-12-02 13:55:00,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 13:55:00,938 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 13.0) internal successors, (26), 3 states have internal predecessors, (26), 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 26 [2023-12-02 13:55:00,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 13:55:06,297 INFO L225 Difference]: With dead ends: 758708 [2023-12-02 13:55:06,297 INFO L226 Difference]: Without dead ends: 758708 [2023-12-02 13:55:06,297 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 [2023-12-02 13:55:06,298 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 117 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 289 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 13:55:06,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 289 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 13:55:08,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758708 states.