./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 0e0057cc 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_a464d208-eae0-48d7-9244-4dd15428cf66/bin/utaipan-verify-nQ1chXbOIh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a464d208-eae0-48d7-9244-4dd15428cf66/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_a464d208-eae0-48d7-9244-4dd15428cf66/bin/utaipan-verify-nQ1chXbOIh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a464d208-eae0-48d7-9244-4dd15428cf66/bin/utaipan-verify-nQ1chXbOIh/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a464d208-eae0-48d7-9244-4dd15428cf66/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_a464d208-eae0-48d7-9244-4dd15428cf66/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 67ced8cbf918778cce3ae5cae291c50696df3950945fdf68713903c29ac269e1 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-12-02 16:34:17,719 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-12-02 16:34:17,783 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a464d208-eae0-48d7-9244-4dd15428cf66/bin/utaipan-verify-nQ1chXbOIh/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-12-02 16:34:17,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-12-02 16:34:17,788 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-12-02 16:34:17,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-12-02 16:34:17,812 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-12-02 16:34:17,813 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-12-02 16:34:17,813 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-12-02 16:34:17,814 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-12-02 16:34:17,814 INFO L153 SettingsManager]: * User list type=DISABLED [2023-12-02 16:34:17,815 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-12-02 16:34:17,815 INFO L153 SettingsManager]: * Explicit value domain=true [2023-12-02 16:34:17,816 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-12-02 16:34:17,817 INFO L153 SettingsManager]: * Octagon Domain=false [2023-12-02 16:34:17,817 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-12-02 16:34:17,818 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-12-02 16:34:17,818 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-12-02 16:34:17,819 INFO L153 SettingsManager]: * Interval Domain=false [2023-12-02 16:34:17,819 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-12-02 16:34:17,820 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-12-02 16:34:17,820 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-12-02 16:34:17,821 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-12-02 16:34:17,822 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-12-02 16:34:17,822 INFO L153 SettingsManager]: * sizeof long=4 [2023-12-02 16:34:17,823 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-12-02 16:34:17,823 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-12-02 16:34:17,823 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-12-02 16:34:17,824 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-12-02 16:34:17,824 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-12-02 16:34:17,825 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-12-02 16:34:17,825 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-12-02 16:34:17,825 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-12-02 16:34:17,825 INFO L153 SettingsManager]: * sizeof long double=12 [2023-12-02 16:34:17,826 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-12-02 16:34:17,826 INFO L153 SettingsManager]: * Use constant arrays=true [2023-12-02 16:34:17,826 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-12-02 16:34:17,826 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-12-02 16:34:17,827 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:34:17,827 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-12-02 16:34:17,827 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-12-02 16:34:17,827 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-12-02 16:34:17,828 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-12-02 16:34:17,828 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-12-02 16:34:17,828 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-12-02 16:34:17,828 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-12-02 16:34:17,828 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-12-02 16:34:17,828 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-12-02 16:34:17,829 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_a464d208-eae0-48d7-9244-4dd15428cf66/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a464d208-eae0-48d7-9244-4dd15428cf66/bin/utaipan-verify-nQ1chXbOIh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67ced8cbf918778cce3ae5cae291c50696df3950945fdf68713903c29ac269e1 [2023-12-02 16:34:18,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-12-02 16:34:18,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-12-02 16:34:18,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-12-02 16:34:18,063 INFO L270 PluginConnector]: Initializing CDTParser... [2023-12-02 16:34:18,063 INFO L274 PluginConnector]: CDTParser initialized [2023-12-02 16:34:18,064 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a464d208-eae0-48d7-9244-4dd15428cf66/bin/utaipan-verify-nQ1chXbOIh/../../sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2023-12-02 16:34:20,823 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-12-02 16:34:21,011 INFO L384 CDTParser]: Found 1 translation units. [2023-12-02 16:34:21,011 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a464d208-eae0-48d7-9244-4dd15428cf66/sv-benchmarks/c/weaver/popl20-min-max-dec.wvr.c [2023-12-02 16:34:21,020 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a464d208-eae0-48d7-9244-4dd15428cf66/bin/utaipan-verify-nQ1chXbOIh/data/ec21dc2c5/841a670b8ad244b6b9af85687c76997b/FLAG35a938113 [2023-12-02 16:34:21,031 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a464d208-eae0-48d7-9244-4dd15428cf66/bin/utaipan-verify-nQ1chXbOIh/data/ec21dc2c5/841a670b8ad244b6b9af85687c76997b [2023-12-02 16:34:21,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-12-02 16:34:21,035 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-12-02 16:34:21,036 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-12-02 16:34:21,036 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-12-02 16:34:21,040 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-12-02 16:34:21,041 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:34:21" (1/1) ... [2023-12-02 16:34:21,042 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cd99e5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21, skipping insertion in model container [2023-12-02 16:34:21,042 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 04:34:21" (1/1) ... [2023-12-02 16:34:21,070 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-12-02 16:34:21,265 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:34:21,275 INFO L202 MainTranslator]: Completed pre-run [2023-12-02 16:34:21,311 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-12-02 16:34:21,318 WARN L675 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:34:21,318 WARN L675 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-12-02 16:34:21,324 INFO L206 MainTranslator]: Completed translation [2023-12-02 16:34:21,325 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21 WrapperNode [2023-12-02 16:34:21,325 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-12-02 16:34:21,326 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-12-02 16:34:21,326 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-12-02 16:34:21,326 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-12-02 16:34:21,331 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21" (1/1) ... [2023-12-02 16:34:21,345 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21" (1/1) ... [2023-12-02 16:34:21,378 INFO L138 Inliner]: procedures = 26, calls = 64, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 207 [2023-12-02 16:34:21,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-12-02 16:34:21,379 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-12-02 16:34:21,379 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-12-02 16:34:21,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-12-02 16:34:21,390 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21" (1/1) ... [2023-12-02 16:34:21,390 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21" (1/1) ... [2023-12-02 16:34:21,397 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21" (1/1) ... [2023-12-02 16:34:21,397 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21" (1/1) ... [2023-12-02 16:34:21,418 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21" (1/1) ... [2023-12-02 16:34:21,423 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21" (1/1) ... [2023-12-02 16:34:21,426 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21" (1/1) ... [2023-12-02 16:34:21,429 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21" (1/1) ... [2023-12-02 16:34:21,434 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-12-02 16:34:21,435 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-12-02 16:34:21,435 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-12-02 16:34:21,435 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-12-02 16:34:21,436 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21" (1/1) ... [2023-12-02 16:34:21,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-12-02 16:34:21,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a464d208-eae0-48d7-9244-4dd15428cf66/bin/utaipan-verify-nQ1chXbOIh/z3 [2023-12-02 16:34:21,470 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a464d208-eae0-48d7-9244-4dd15428cf66/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-12-02 16:34:21,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_a464d208-eae0-48d7-9244-4dd15428cf66/bin/utaipan-verify-nQ1chXbOIh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-12-02 16:34:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-12-02 16:34:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-12-02 16:34:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-12-02 16:34:21,511 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-12-02 16:34:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-12-02 16:34:21,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-12-02 16:34:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-12-02 16:34:21,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-12-02 16:34:21,512 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-12-02 16:34:21,512 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-12-02 16:34:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-12-02 16:34:21,513 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-12-02 16:34:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-12-02 16:34:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-12-02 16:34:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-12-02 16:34:21,513 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-12-02 16:34:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-12-02 16:34:21,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-12-02 16:34:21,514 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-12-02 16:34:21,516 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 16:34:21,640 INFO L241 CfgBuilder]: Building ICFG [2023-12-02 16:34:21,643 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-12-02 16:34:22,208 INFO L282 CfgBuilder]: Performing block encoding [2023-12-02 16:34:22,527 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-12-02 16:34:22,527 INFO L309 CfgBuilder]: Removed 4 assume(true) statements. [2023-12-02 16:34:22,529 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:34:22 BoogieIcfgContainer [2023-12-02 16:34:22,529 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-12-02 16:34:22,532 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-12-02 16:34:22,532 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-12-02 16:34:22,535 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-12-02 16:34:22,535 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 04:34:21" (1/3) ... [2023-12-02 16:34:22,536 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f7ee18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:34:22, skipping insertion in model container [2023-12-02 16:34:22,536 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 04:34:21" (2/3) ... [2023-12-02 16:34:22,537 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f7ee18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 04:34:22, skipping insertion in model container [2023-12-02 16:34:22,537 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 04:34:22" (3/3) ... [2023-12-02 16:34:22,538 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-min-max-dec.wvr.c [2023-12-02 16:34:22,547 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-12-02 16:34:22,558 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-12-02 16:34:22,558 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2023-12-02 16:34:22,558 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-12-02 16:34:22,657 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-12-02 16:34:22,694 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 274 places, 273 transitions, 574 flow [2023-12-02 16:35:10,838 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 1664118 states, 1646858 states have (on average 4.909899942800169) internal successors, (8085908), 1664117 states have internal predecessors, (8085908), 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 16:35:10,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-12-02 16:35:10,866 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;@4764a451, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-12-02 16:35:10,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 86 error locations. [2023-12-02 16:35:19,834 INFO L276 IsEmpty]: Start isEmpty. Operand has 1664118 states, 1646858 states have (on average 4.909899942800169) internal successors, (8085908), 1664117 states have internal predecessors, (8085908), 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 16:35:19,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-12-02 16:35:19,842 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:35:19,842 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] [2023-12-02 16:35:19,843 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-12-02 16:35:19,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:35:19,849 INFO L85 PathProgramCache]: Analyzing trace with hash -973730249, now seen corresponding path program 1 times [2023-12-02 16:35:19,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:35:19,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438920783] [2023-12-02 16:35:19,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:35:19,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:35:19,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:35:20,035 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 16:35:20,036 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:35:20,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438920783] [2023-12-02 16:35:20,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438920783] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:35:20,037 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:35:20,037 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:35:20,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359515618] [2023-12-02 16:35:20,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:35:20,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:35:20,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:35:20,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:35:20,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:35:23,011 INFO L87 Difference]: Start difference. First operand has 1664118 states, 1646858 states have (on average 4.909899942800169) internal successors, (8085908), 1664117 states have internal predecessors, (8085908), 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, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 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 16:35:27,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:35:27,860 INFO L93 Difference]: Finished difference Result 213189 states and 973304 transitions. [2023-12-02 16:35:27,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:35:27,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 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 25 [2023-12-02 16:35:27,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:35:30,026 INFO L225 Difference]: With dead ends: 213189 [2023-12-02 16:35:30,026 INFO L226 Difference]: Without dead ends: 213186 [2023-12-02 16:35:30,028 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 16:35:30,031 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 2 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:35:30,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 352 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:35:30,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213186 states. [2023-12-02 16:35:37,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213186 to 213186. [2023-12-02 16:35:37,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213186 states, 213159 states have (on average 4.56607978082089) internal successors, (973301), 213185 states have internal predecessors, (973301), 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 16:35:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213186 states to 213186 states and 973301 transitions. [2023-12-02 16:35:39,254 INFO L78 Accepts]: Start accepts. Automaton has 213186 states and 973301 transitions. Word has length 25 [2023-12-02 16:35:39,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:35:39,255 INFO L495 AbstractCegarLoop]: Abstraction has 213186 states and 973301 transitions. [2023-12-02 16:35:39,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 12.5) internal successors, (25), 3 states have internal predecessors, (25), 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 16:35:39,255 INFO L276 IsEmpty]: Start isEmpty. Operand 213186 states and 973301 transitions. [2023-12-02 16:35:39,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-12-02 16:35:39,256 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:35:39,256 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] [2023-12-02 16:35:39,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-12-02 16:35:39,257 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-12-02 16:35:39,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:35:39,258 INFO L85 PathProgramCache]: Analyzing trace with hash -1524253862, now seen corresponding path program 1 times [2023-12-02 16:35:39,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:35:39,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259568696] [2023-12-02 16:35:39,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:35:39,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:35:39,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:35:39,317 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 16:35:39,318 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:35:39,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259568696] [2023-12-02 16:35:39,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259568696] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:35:39,319 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:35:39,319 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:35:39,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425876354] [2023-12-02 16:35:39,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:35:39,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:35:39,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:35:39,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:35:39,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:35:39,322 INFO L87 Difference]: Start difference. First operand 213186 states and 973301 transitions. Second operand has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 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 16:35:41,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:35:41,404 INFO L93 Difference]: Finished difference Result 174738 states and 796963 transitions. [2023-12-02 16:35:41,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:35:41,405 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 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 29 [2023-12-02 16:35:41,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:35:43,012 INFO L225 Difference]: With dead ends: 174738 [2023-12-02 16:35:43,013 INFO L226 Difference]: Without dead ends: 174738 [2023-12-02 16:35:43,013 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 16:35:43,014 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 163 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-12-02 16:35:43,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 199 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-12-02 16:35:43,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174738 states. [2023-12-02 16:35:48,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174738 to 174738. [2023-12-02 16:35:48,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174738 states, 174731 states have (on average 4.56108532544311) internal successors, (796963), 174737 states have internal predecessors, (796963), 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 16:35:49,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174738 states to 174738 states and 796963 transitions. [2023-12-02 16:35:49,665 INFO L78 Accepts]: Start accepts. Automaton has 174738 states and 796963 transitions. Word has length 29 [2023-12-02 16:35:49,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:35:49,665 INFO L495 AbstractCegarLoop]: Abstraction has 174738 states and 796963 transitions. [2023-12-02 16:35:49,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 14.5) internal successors, (29), 3 states have internal predecessors, (29), 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 16:35:49,666 INFO L276 IsEmpty]: Start isEmpty. Operand 174738 states and 796963 transitions. [2023-12-02 16:35:49,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 16:35:49,668 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:35:49,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:35:49,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-12-02 16:35:49,669 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-12-02 16:35:49,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:35:49,670 INFO L85 PathProgramCache]: Analyzing trace with hash -803027690, now seen corresponding path program 1 times [2023-12-02 16:35:49,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:35:49,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109800586] [2023-12-02 16:35:49,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:35:49,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:35:49,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:35:50,284 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 16:35:50,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:35:50,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109800586] [2023-12-02 16:35:50,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109800586] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:35:50,285 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:35:50,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-12-02 16:35:50,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063680689] [2023-12-02 16:35:50,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:35:50,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-12-02 16:35:50,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:35:50,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-12-02 16:35:50,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:35:50,287 INFO L87 Difference]: Start difference. First operand 174738 states and 796963 transitions. Second operand has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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 16:35:52,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:35:52,002 INFO L93 Difference]: Finished difference Result 174737 states and 796962 transitions. [2023-12-02 16:35:52,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-12-02 16:35:52,002 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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 67 [2023-12-02 16:35:52,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-12-02 16:35:53,636 INFO L225 Difference]: With dead ends: 174737 [2023-12-02 16:35:53,636 INFO L226 Difference]: Without dead ends: 174737 [2023-12-02 16:35:53,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-12-02 16:35:53,638 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 6 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-12-02 16:35:53,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 309 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-12-02 16:35:54,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174737 states. [2023-12-02 16:35:58,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174737 to 174737. [2023-12-02 16:35:59,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174737 states, 174731 states have (on average 4.561079602360199) internal successors, (796962), 174736 states have internal predecessors, (796962), 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 16:36:00,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174737 states to 174737 states and 796962 transitions. [2023-12-02 16:36:00,439 INFO L78 Accepts]: Start accepts. Automaton has 174737 states and 796962 transitions. Word has length 67 [2023-12-02 16:36:00,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-12-02 16:36:00,439 INFO L495 AbstractCegarLoop]: Abstraction has 174737 states and 796962 transitions. [2023-12-02 16:36:00,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.4) internal successors, (67), 6 states have internal predecessors, (67), 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 16:36:00,440 INFO L276 IsEmpty]: Start isEmpty. Operand 174737 states and 796962 transitions. [2023-12-02 16:36:00,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-12-02 16:36:00,441 INFO L187 NwaCegarLoop]: Found error trace [2023-12-02 16:36:00,441 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-12-02 16:36:00,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-12-02 16:36:00,442 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONDATA_RACE === [thread1Err0ASSERT_VIOLATIONDATA_RACE, thread1Err1ASSERT_VIOLATIONDATA_RACE, thread1Err2ASSERT_VIOLATIONDATA_RACE, thread1Err3ASSERT_VIOLATIONDATA_RACE (and 82 more)] === [2023-12-02 16:36:00,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-12-02 16:36:00,442 INFO L85 PathProgramCache]: Analyzing trace with hash -386935863, now seen corresponding path program 1 times [2023-12-02 16:36:00,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-12-02 16:36:00,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279010181] [2023-12-02 16:36:00,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-12-02 16:36:00,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-12-02 16:36:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-12-02 16:36:00,491 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 16:36:00,491 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-12-02 16:36:00,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279010181] [2023-12-02 16:36:00,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279010181] provided 1 perfect and 0 imperfect interpolant sequences [2023-12-02 16:36:00,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-12-02 16:36:00,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-12-02 16:36:00,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297582545] [2023-12-02 16:36:00,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-12-02 16:36:00,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-12-02 16:36:00,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-12-02 16:36:00,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-12-02 16:36:00,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-12-02 16:36:00,494 INFO L87 Difference]: Start difference. First operand 174737 states and 796962 transitions. Second operand has 3 states, 2 states have (on average 33.5) internal successors, (67), 3 states have internal predecessors, (67), 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 16:36:02,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-12-02 16:36:02,239 INFO L93 Difference]: Finished difference Result 174736 states and 796961 transitions. [2023-12-02 16:36:02,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-12-02 16:36:02,240 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 33.5) internal successors, (67), 3 states have internal predecessors, (67), 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 67 [2023-12-02 16:36:02,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted.