./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-data-race.prp --file ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version 9bd2c7ff 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_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ/config/TaipanReach.xml -i ../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! data-race) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 33726888f4084a4eef0b3c291c9d0f3df5c2ad2aa8559b997fd648ce422ca927 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-9bd2c7f [2023-11-19 04:17:31,626 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-19 04:17:31,719 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ/config/svcomp-DataRace-32bit-Taipan_Default.epf [2023-11-19 04:17:31,726 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-19 04:17:31,726 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-19 04:17:31,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-19 04:17:31,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-19 04:17:31,757 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-19 04:17:31,758 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-19 04:17:31,758 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-19 04:17:31,759 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-19 04:17:31,759 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-19 04:17:31,760 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-19 04:17:31,760 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-19 04:17:31,761 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-19 04:17:31,761 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-19 04:17:31,762 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-19 04:17:31,763 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-19 04:17:31,763 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-19 04:17:31,764 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-19 04:17:31,764 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-19 04:17:31,765 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-19 04:17:31,766 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-19 04:17:31,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-19 04:17:31,767 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-19 04:17:31,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-19 04:17:31,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-19 04:17:31,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-19 04:17:31,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-19 04:17:31,770 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-19 04:17:31,770 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-19 04:17:31,771 INFO L153 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-11-19 04:17:31,771 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2023-11-19 04:17:31,772 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-19 04:17:31,772 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-19 04:17:31,773 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-19 04:17:31,773 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-19 04:17:31,774 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-19 04:17:31,774 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:17:31,775 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-19 04:17:31,775 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-19 04:17:31,780 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-19 04:17:31,780 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-19 04:17:31,781 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-19 04:17:31,781 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-19 04:17:31,782 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-19 04:17:31,782 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-19 04:17:31,783 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_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 33726888f4084a4eef0b3c291c9d0f3df5c2ad2aa8559b997fd648ce422ca927 [2023-11-19 04:17:32,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-19 04:17:32,116 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-19 04:17:32,119 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-19 04:17:32,123 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-19 04:17:32,123 INFO L274 PluginConnector]: CDTParser initialized [2023-11-19 04:17:32,125 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ/../../sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2023-11-19 04:17:35,532 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-19 04:17:35,851 INFO L384 CDTParser]: Found 1 translation units. [2023-11-19 04:17:35,852 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/sv-benchmarks/c/pthread-ext/11_fmaxsymopt-pthread.i [2023-11-19 04:17:35,868 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ/data/117c0fbca/b366a2d7a8f1466596c6a1bbd3f5f18b/FLAG295bb1fa2 [2023-11-19 04:17:35,884 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ/data/117c0fbca/b366a2d7a8f1466596c6a1bbd3f5f18b [2023-11-19 04:17:35,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-19 04:17:35,889 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-19 04:17:35,891 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-19 04:17:35,891 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-19 04:17:35,897 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-19 04:17:35,898 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:17:35" (1/1) ... [2023-11-19 04:17:35,899 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34ce9900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:35, skipping insertion in model container [2023-11-19 04:17:35,899 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 04:17:35" (1/1) ... [2023-11-19 04:17:35,951 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-19 04:17:36,417 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:17:36,438 INFO L202 MainTranslator]: Completed pre-run [2023-11-19 04:17:36,533 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-19 04:17:36,600 INFO L206 MainTranslator]: Completed translation [2023-11-19 04:17:36,601 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:36 WrapperNode [2023-11-19 04:17:36,601 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-19 04:17:36,603 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-19 04:17:36,603 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-19 04:17:36,603 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-19 04:17:36,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:36" (1/1) ... [2023-11-19 04:17:36,651 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:36" (1/1) ... [2023-11-19 04:17:36,693 INFO L138 Inliner]: procedures = 164, calls = 28, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 93 [2023-11-19 04:17:36,694 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-19 04:17:36,695 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-19 04:17:36,695 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-19 04:17:36,695 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-19 04:17:36,706 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:36" (1/1) ... [2023-11-19 04:17:36,706 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:36" (1/1) ... [2023-11-19 04:17:36,720 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:36" (1/1) ... [2023-11-19 04:17:36,721 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:36" (1/1) ... [2023-11-19 04:17:36,734 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:36" (1/1) ... [2023-11-19 04:17:36,746 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:36" (1/1) ... [2023-11-19 04:17:36,749 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:36" (1/1) ... [2023-11-19 04:17:36,753 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:36" (1/1) ... [2023-11-19 04:17:36,762 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-19 04:17:36,763 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-19 04:17:36,764 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-19 04:17:36,764 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-19 04:17:36,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:36" (1/1) ... [2023-11-19 04:17:36,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-19 04:17:36,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ/z3 [2023-11-19 04:17:36,802 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-19 04:17:36,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8836679c-a0c1-44a4-8fc8-51efc69a347b/bin/utaipan-verify-t7M7D8N6sZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-19 04:17:36,838 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-11-19 04:17:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-11-19 04:17:36,839 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-11-19 04:17:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-11-19 04:17:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-11-19 04:17:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-19 04:17:36,839 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-11-19 04:17:36,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-11-19 04:17:36,840 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-19 04:17:36,840 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-19 04:17:36,840 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-19 04:17:36,842 WARN L210 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-11-19 04:17:37,004 INFO L236 CfgBuilder]: Building ICFG [2023-11-19 04:17:37,007 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-19 04:17:37,275 INFO L277 CfgBuilder]: Performing block encoding [2023-11-19 04:17:37,287 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-19 04:17:37,288 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-11-19 04:17:37,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:17:37 BoogieIcfgContainer [2023-11-19 04:17:37,293 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-19 04:17:37,298 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-19 04:17:37,298 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-19 04:17:37,301 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-19 04:17:37,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 04:17:35" (1/3) ... [2023-11-19 04:17:37,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2839b829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:17:37, skipping insertion in model container [2023-11-19 04:17:37,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 04:17:36" (2/3) ... [2023-11-19 04:17:37,303 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2839b829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 04:17:37, skipping insertion in model container [2023-11-19 04:17:37,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 04:17:37" (3/3) ... [2023-11-19 04:17:37,304 INFO L112 eAbstractionObserver]: Analyzing ICFG 11_fmaxsymopt-pthread.i [2023-11-19 04:17:37,313 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-11-19 04:17:37,322 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-19 04:17:37,322 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-11-19 04:17:37,322 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-11-19 04:17:37,408 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 04:17:37,446 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:17:37,461 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 110 transitions, 224 flow [2023-11-19 04:17:37,465 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 110 transitions, 224 flow [2023-11-19 04:17:37,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 110 transitions, 224 flow [2023-11-19 04:17:37,539 INFO L124 PetriNetUnfolderBase]: 10/121 cut-off events. [2023-11-19 04:17:37,539 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-11-19 04:17:37,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 121 events. 10/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 154 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 83. Up to 4 conditions per place. [2023-11-19 04:17:37,549 INFO L119 LiptonReduction]: Number of co-enabled transitions 1960 [2023-11-19 04:17:42,281 INFO L134 LiptonReduction]: Checked pairs total: 2015 [2023-11-19 04:17:42,281 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-11-19 04:17:42,299 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 15 places, 13 transitions, 30 flow [2023-11-19 04:17:42,321 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 37 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:42,349 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:17:42,360 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;@4b9ce01a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:17:42,360 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-11-19 04:17:42,363 INFO L276 IsEmpty]: Start isEmpty. Operand has 37 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 36 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:42,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:17:42,373 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:42,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:17:42,379 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err3ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 04:17:42,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:42,389 INFO L85 PathProgramCache]: Analyzing trace with hash 465551013, now seen corresponding path program 1 times [2023-11-19 04:17:42,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:17:42,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395980247] [2023-11-19 04:17:42,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:42,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:17:42,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:42,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:42,610 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:17:42,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395980247] [2023-11-19 04:17:42,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395980247] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:42,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:42,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:17:42,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998138142] [2023-11-19 04:17:42,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:42,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:17:42,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:17:42,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:17:42,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:17:42,651 INFO L87 Difference]: Start difference. First operand has 37 states, 28 states have (on average 2.2857142857142856) internal successors, (64), 36 states have internal predecessors, (64), 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 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:42,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:42,692 INFO L93 Difference]: Finished difference Result 15 states and 24 transitions. [2023-11-19 04:17:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:17:42,695 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-19 04:17:42,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:42,703 INFO L225 Difference]: With dead ends: 15 [2023-11-19 04:17:42,704 INFO L226 Difference]: Without dead ends: 15 [2023-11-19 04:17:42,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:17:42,709 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:42,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:17:42,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2023-11-19 04:17:42,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2023-11-19 04:17:42,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 14 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:42,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 24 transitions. [2023-11-19 04:17:42,749 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 24 transitions. Word has length 5 [2023-11-19 04:17:42,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:42,750 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 24 transitions. [2023-11-19 04:17:42,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:42,755 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 24 transitions. [2023-11-19 04:17:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-19 04:17:42,756 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:42,757 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2023-11-19 04:17:42,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-19 04:17:42,757 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 5 more)] === [2023-11-19 04:17:42,758 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:42,758 INFO L85 PathProgramCache]: Analyzing trace with hash 1547080988, now seen corresponding path program 1 times [2023-11-19 04:17:42,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:17:42,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012875893] [2023-11-19 04:17:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:17:42,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:17:42,840 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:17:42,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:17:42,911 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:17:42,911 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:17:42,914 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 9 remaining) [2023-11-19 04:17:42,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 9 remaining) [2023-11-19 04:17:42,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 9 remaining) [2023-11-19 04:17:42,917 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 9 remaining) [2023-11-19 04:17:42,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 9 remaining) [2023-11-19 04:17:42,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 9 remaining) [2023-11-19 04:17:42,918 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 9 remaining) [2023-11-19 04:17:42,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 9 remaining) [2023-11-19 04:17:42,919 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 9 remaining) [2023-11-19 04:17:42,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-19 04:17:42,923 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-11-19 04:17:42,925 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 04:17:42,925 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-11-19 04:17:42,997 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 04:17:43,011 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:17:43,014 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 169 places, 181 transitions, 372 flow [2023-11-19 04:17:43,014 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 169 places, 181 transitions, 372 flow [2023-11-19 04:17:43,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 169 places, 181 transitions, 372 flow [2023-11-19 04:17:43,111 INFO L124 PetriNetUnfolderBase]: 19/205 cut-off events. [2023-11-19 04:17:43,111 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-11-19 04:17:43,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 205 events. 19/205 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 485 event pairs, 0 based on Foata normal form. 0/175 useless extension candidates. Maximal degree in co-relation 153. Up to 6 conditions per place. [2023-11-19 04:17:43,134 INFO L119 LiptonReduction]: Number of co-enabled transitions 13860 [2023-11-19 04:17:48,620 INFO L134 LiptonReduction]: Checked pairs total: 34877 [2023-11-19 04:17:48,620 INFO L136 LiptonReduction]: Total number of compositions: 180 [2023-11-19 04:17:48,624 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 51 transitions, 112 flow [2023-11-19 04:17:48,754 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2139 states, 2086 states have (on average 3.188878235858102) internal successors, (6652), 2138 states have internal predecessors, (6652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:48,756 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:17:48,763 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;@4b9ce01a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:17:48,764 INFO L358 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2023-11-19 04:17:48,772 INFO L276 IsEmpty]: Start isEmpty. Operand has 2139 states, 2086 states have (on average 3.188878235858102) internal successors, (6652), 2138 states have internal predecessors, (6652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:48,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:17:48,773 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:48,774 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:17:48,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 04:17:48,775 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:48,775 INFO L85 PathProgramCache]: Analyzing trace with hash 874543115, now seen corresponding path program 1 times [2023-11-19 04:17:48,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:17:48,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44991350] [2023-11-19 04:17:48,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:48,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:17:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:48,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:48,828 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:17:48,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44991350] [2023-11-19 04:17:48,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44991350] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:48,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:48,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:17:48,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047572722] [2023-11-19 04:17:48,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:48,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:17:48,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:17:48,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:17:48,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:17:48,838 INFO L87 Difference]: Start difference. First operand has 2139 states, 2086 states have (on average 3.188878235858102) internal successors, (6652), 2138 states have internal predecessors, (6652), 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 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:48,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:48,931 INFO L93 Difference]: Finished difference Result 1601 states and 4602 transitions. [2023-11-19 04:17:48,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:17:48,932 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-19 04:17:48,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:48,959 INFO L225 Difference]: With dead ends: 1601 [2023-11-19 04:17:48,960 INFO L226 Difference]: Without dead ends: 1601 [2023-11-19 04:17:48,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:17:48,961 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:48,962 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 24 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:17:48,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1601 states. [2023-11-19 04:17:49,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1601 to 1601. [2023-11-19 04:17:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1585 states have (on average 2.903470031545741) internal successors, (4602), 1600 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:49,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 4602 transitions. [2023-11-19 04:17:49,096 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 4602 transitions. Word has length 5 [2023-11-19 04:17:49,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:49,097 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 4602 transitions. [2023-11-19 04:17:49,097 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:49,097 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 4602 transitions. [2023-11-19 04:17:49,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:17:49,098 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:49,098 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:49,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-19 04:17:49,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 04:17:49,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:49,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1377718542, now seen corresponding path program 1 times [2023-11-19 04:17:49,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:17:49,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585195242] [2023-11-19 04:17:49,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:49,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:17:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:49,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:49,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:17:49,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585195242] [2023-11-19 04:17:49,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585195242] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:49,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:49,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:17:49,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732003197] [2023-11-19 04:17:49,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:49,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:17:49,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:17:49,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:17:49,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:17:49,236 INFO L87 Difference]: Start difference. First operand 1601 states and 4602 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:49,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:49,333 INFO L93 Difference]: Finished difference Result 1789 states and 5132 transitions. [2023-11-19 04:17:49,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:17:49,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-19 04:17:49,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:49,351 INFO L225 Difference]: With dead ends: 1789 [2023-11-19 04:17:49,352 INFO L226 Difference]: Without dead ends: 1789 [2023-11-19 04:17:49,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:17:49,353 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 25 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:49,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 62 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:17:49,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1789 states. [2023-11-19 04:17:49,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1789 to 1695. [2023-11-19 04:17:49,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1695 states, 1679 states have (on average 2.8987492555092316) internal successors, (4867), 1694 states have internal predecessors, (4867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:49,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1695 states to 1695 states and 4867 transitions. [2023-11-19 04:17:49,425 INFO L78 Accepts]: Start accepts. Automaton has 1695 states and 4867 transitions. Word has length 7 [2023-11-19 04:17:49,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:49,425 INFO L495 AbstractCegarLoop]: Abstraction has 1695 states and 4867 transitions. [2023-11-19 04:17:49,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:49,426 INFO L276 IsEmpty]: Start isEmpty. Operand 1695 states and 4867 transitions. [2023-11-19 04:17:49,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:17:49,426 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:49,427 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:17:49,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-19 04:17:49,427 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 04:17:49,428 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:49,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1052256392, now seen corresponding path program 1 times [2023-11-19 04:17:49,428 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:17:49,428 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598490300] [2023-11-19 04:17:49,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:49,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:17:49,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:17:49,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:17:49,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598490300] [2023-11-19 04:17:49,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598490300] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:49,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:49,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:17:49,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434953821] [2023-11-19 04:17:49,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:49,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:17:49,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:17:49,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:17:49,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:17:49,489 INFO L87 Difference]: Start difference. First operand 1695 states and 4867 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:49,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:17:49,600 INFO L93 Difference]: Finished difference Result 1910 states and 5384 transitions. [2023-11-19 04:17:49,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:17:49,601 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-19 04:17:49,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:17:49,617 INFO L225 Difference]: With dead ends: 1910 [2023-11-19 04:17:49,617 INFO L226 Difference]: Without dead ends: 1910 [2023-11-19 04:17:49,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:17:49,620 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 32 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:17:49,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 34 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:17:49,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1910 states. [2023-11-19 04:17:49,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1910 to 1567. [2023-11-19 04:17:49,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1555 states have (on average 2.8392282958199355) internal successors, (4415), 1566 states have internal predecessors, (4415), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:49,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 4415 transitions. [2023-11-19 04:17:49,692 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 4415 transitions. Word has length 9 [2023-11-19 04:17:49,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:17:49,693 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 4415 transitions. [2023-11-19 04:17:49,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:49,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 4415 transitions. [2023-11-19 04:17:49,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-11-19 04:17:49,696 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:49,696 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-11-19 04:17:49,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-19 04:17:49,697 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 9 more)] === [2023-11-19 04:17:49,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:49,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1598440495, now seen corresponding path program 1 times [2023-11-19 04:17:49,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:17:49,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668847444] [2023-11-19 04:17:49,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:49,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:17:49,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:17:49,734 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:17:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:17:49,763 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:17:49,767 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:17:49,768 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 13 remaining) [2023-11-19 04:17:49,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 13 remaining) [2023-11-19 04:17:49,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 13 remaining) [2023-11-19 04:17:49,768 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 13 remaining) [2023-11-19 04:17:49,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 13 remaining) [2023-11-19 04:17:49,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 13 remaining) [2023-11-19 04:17:49,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 13 remaining) [2023-11-19 04:17:49,769 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 13 remaining) [2023-11-19 04:17:49,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 13 remaining) [2023-11-19 04:17:49,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 13 remaining) [2023-11-19 04:17:49,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 13 remaining) [2023-11-19 04:17:49,770 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 13 remaining) [2023-11-19 04:17:49,771 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 13 remaining) [2023-11-19 04:17:49,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-19 04:17:49,771 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-11-19 04:17:49,772 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 04:17:49,772 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-11-19 04:17:49,815 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 04:17:49,819 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:17:49,819 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 252 transitions, 522 flow [2023-11-19 04:17:49,820 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 252 transitions, 522 flow [2023-11-19 04:17:49,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 252 transitions, 522 flow [2023-11-19 04:17:49,926 INFO L124 PetriNetUnfolderBase]: 28/289 cut-off events. [2023-11-19 04:17:49,927 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-11-19 04:17:49,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 302 conditions, 289 events. 28/289 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 907 event pairs, 0 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 223. Up to 8 conditions per place. [2023-11-19 04:17:49,958 INFO L119 LiptonReduction]: Number of co-enabled transitions 35700 [2023-11-19 04:17:56,883 INFO L134 LiptonReduction]: Checked pairs total: 90174 [2023-11-19 04:17:56,884 INFO L136 LiptonReduction]: Total number of compositions: 253 [2023-11-19 04:17:56,885 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 69 places, 74 transitions, 166 flow [2023-11-19 04:17:59,390 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 40877 states, 40600 states have (on average 4.294950738916256) internal successors, (174375), 40876 states have internal predecessors, (174375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:59,391 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-19 04:17:59,392 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;@4b9ce01a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-19 04:17:59,392 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2023-11-19 04:17:59,631 INFO L276 IsEmpty]: Start isEmpty. Operand has 40877 states, 40600 states have (on average 4.294950738916256) internal successors, (174375), 40876 states have internal predecessors, (174375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:17:59,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-19 04:17:59,632 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:17:59,632 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-19 04:17:59,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 04:17:59,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:17:59,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1415065454, now seen corresponding path program 1 times [2023-11-19 04:17:59,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:17:59,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007217876] [2023-11-19 04:17:59,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:17:59,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:17:59,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:17:59,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:17:59,673 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:17:59,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007217876] [2023-11-19 04:17:59,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007217876] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:17:59,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:17:59,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-11-19 04:17:59,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332913771] [2023-11-19 04:17:59,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:17:59,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-19 04:17:59,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:17:59,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-19 04:17:59,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:17:59,801 INFO L87 Difference]: Start difference. First operand has 40877 states, 40600 states have (on average 4.294950738916256) internal successors, (174375), 40876 states have internal predecessors, (174375), 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 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:00,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:00,681 INFO L93 Difference]: Finished difference Result 28911 states and 113515 transitions. [2023-11-19 04:18:00,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-19 04:18:00,681 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 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 5 [2023-11-19 04:18:00,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:01,295 INFO L225 Difference]: With dead ends: 28911 [2023-11-19 04:18:01,295 INFO L226 Difference]: Without dead ends: 28911 [2023-11-19 04:18:01,296 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-19 04:18:01,296 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:01,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 35 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-19 04:18:01,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28911 states. [2023-11-19 04:18:02,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28911 to 28911. [2023-11-19 04:18:03,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28911 states, 28847 states have (on average 3.9350712379103547) internal successors, (113515), 28910 states have internal predecessors, (113515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28911 states to 28911 states and 113515 transitions. [2023-11-19 04:18:03,665 INFO L78 Accepts]: Start accepts. Automaton has 28911 states and 113515 transitions. Word has length 5 [2023-11-19 04:18:03,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:03,666 INFO L495 AbstractCegarLoop]: Abstraction has 28911 states and 113515 transitions. [2023-11-19 04:18:03,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 5.0) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:03,666 INFO L276 IsEmpty]: Start isEmpty. Operand 28911 states and 113515 transitions. [2023-11-19 04:18:03,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-11-19 04:18:03,668 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:03,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:03,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-19 04:18:03,668 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 04:18:03,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:03,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1626810135, now seen corresponding path program 1 times [2023-11-19 04:18:03,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:03,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584209549] [2023-11-19 04:18:03,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:03,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:03,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-19 04:18:03,736 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:03,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584209549] [2023-11-19 04:18:03,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584209549] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:03,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:03,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:18:03,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983683489] [2023-11-19 04:18:03,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:03,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:03,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:03,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:03,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:03,738 INFO L87 Difference]: Start difference. First operand 28911 states and 113515 transitions. Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:04,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:04,403 INFO L93 Difference]: Finished difference Result 32123 states and 125949 transitions. [2023-11-19 04:18:04,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:04,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 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 7 [2023-11-19 04:18:04,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:04,697 INFO L225 Difference]: With dead ends: 32123 [2023-11-19 04:18:04,697 INFO L226 Difference]: Without dead ends: 32123 [2023-11-19 04:18:04,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:04,699 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 44 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:04,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 94 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:04,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32123 states. [2023-11-19 04:18:06,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32123 to 30517. [2023-11-19 04:18:06,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30517 states, 30453 states have (on average 3.9316980264670147) internal successors, (119732), 30516 states have internal predecessors, (119732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:06,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30517 states to 30517 states and 119732 transitions. [2023-11-19 04:18:06,681 INFO L78 Accepts]: Start accepts. Automaton has 30517 states and 119732 transitions. Word has length 7 [2023-11-19 04:18:06,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:06,681 INFO L495 AbstractCegarLoop]: Abstraction has 30517 states and 119732 transitions. [2023-11-19 04:18:06,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:06,682 INFO L276 IsEmpty]: Start isEmpty. Operand 30517 states and 119732 transitions. [2023-11-19 04:18:06,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-19 04:18:06,683 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:06,683 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:06,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-19 04:18:06,685 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thr1Err1ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 04:18:06,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:06,698 INFO L85 PathProgramCache]: Analyzing trace with hash 122435758, now seen corresponding path program 1 times [2023-11-19 04:18:06,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:06,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330546987] [2023-11-19 04:18:06,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:06,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:06,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:06,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:18:06,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:06,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330546987] [2023-11-19 04:18:06,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330546987] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:06,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:06,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:18:06,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889175213] [2023-11-19 04:18:06,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:06,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:06,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:06,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:06,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:06,754 INFO L87 Difference]: Start difference. First operand 30517 states and 119732 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:07,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:07,669 INFO L93 Difference]: Finished difference Result 40315 states and 152448 transitions. [2023-11-19 04:18:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:07,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 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 9 [2023-11-19 04:18:07,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:07,941 INFO L225 Difference]: With dead ends: 40315 [2023-11-19 04:18:07,942 INFO L226 Difference]: Without dead ends: 40315 [2023-11-19 04:18:07,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:07,945 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 47 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:07,946 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 46 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:08,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40315 states. [2023-11-19 04:18:09,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40315 to 31005. [2023-11-19 04:18:09,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31005 states, 30949 states have (on average 3.8099453940353483) internal successors, (117914), 31004 states have internal predecessors, (117914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:09,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31005 states to 31005 states and 117914 transitions. [2023-11-19 04:18:09,944 INFO L78 Accepts]: Start accepts. Automaton has 31005 states and 117914 transitions. Word has length 9 [2023-11-19 04:18:09,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:09,944 INFO L495 AbstractCegarLoop]: Abstraction has 31005 states and 117914 transitions. [2023-11-19 04:18:09,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:09,944 INFO L276 IsEmpty]: Start isEmpty. Operand 31005 states and 117914 transitions. [2023-11-19 04:18:09,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-11-19 04:18:09,946 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:09,946 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:09,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-19 04:18:09,946 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 04:18:09,947 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:09,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1575195834, now seen corresponding path program 1 times [2023-11-19 04:18:09,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:09,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958441298] [2023-11-19 04:18:09,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:09,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:09,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:10,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-11-19 04:18:10,011 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:10,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958441298] [2023-11-19 04:18:10,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958441298] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:10,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:10,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-19 04:18:10,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908436709] [2023-11-19 04:18:10,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:10,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:10,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:10,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:10,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:10,013 INFO L87 Difference]: Start difference. First operand 31005 states and 117914 transitions. Second operand has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:10,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:10,421 INFO L93 Difference]: Finished difference Result 33297 states and 126342 transitions. [2023-11-19 04:18:10,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:10,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-11-19 04:18:10,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:10,613 INFO L225 Difference]: With dead ends: 33297 [2023-11-19 04:18:10,613 INFO L226 Difference]: Without dead ends: 33297 [2023-11-19 04:18:10,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:10,615 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 38 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:10,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 59 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:11,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33297 states. [2023-11-19 04:18:12,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33297 to 31819. [2023-11-19 04:18:12,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31819 states, 31767 states have (on average 3.802656845153776) internal successors, (120799), 31818 states have internal predecessors, (120799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31819 states to 31819 states and 120799 transitions. [2023-11-19 04:18:12,667 INFO L78 Accepts]: Start accepts. Automaton has 31819 states and 120799 transitions. Word has length 13 [2023-11-19 04:18:12,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:12,668 INFO L495 AbstractCegarLoop]: Abstraction has 31819 states and 120799 transitions. [2023-11-19 04:18:12,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.5) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:12,668 INFO L276 IsEmpty]: Start isEmpty. Operand 31819 states and 120799 transitions. [2023-11-19 04:18:12,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:18:12,674 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:12,675 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-19 04:18:12,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-19 04:18:12,675 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err2ASSERT_VIOLATIONDATA_RACE === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 04:18:12,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:12,675 INFO L85 PathProgramCache]: Analyzing trace with hash 804687295, now seen corresponding path program 1 times [2023-11-19 04:18:12,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:12,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445418039] [2023-11-19 04:18:12,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:12,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:12,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-19 04:18:12,734 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-19 04:18:12,735 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-19 04:18:12,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445418039] [2023-11-19 04:18:12,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445418039] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-19 04:18:12,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-19 04:18:12,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-11-19 04:18:12,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904438765] [2023-11-19 04:18:12,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-19 04:18:12,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-19 04:18:12,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-19 04:18:12,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-19 04:18:12,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:12,737 INFO L87 Difference]: Start difference. First operand 31819 states and 120799 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:13,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-19 04:18:13,025 INFO L93 Difference]: Finished difference Result 34947 states and 132741 transitions. [2023-11-19 04:18:13,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-19 04:18:13,026 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 15 [2023-11-19 04:18:13,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-19 04:18:13,160 INFO L225 Difference]: With dead ends: 34947 [2023-11-19 04:18:13,160 INFO L226 Difference]: Without dead ends: 34947 [2023-11-19 04:18:13,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-19 04:18:13,161 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 43 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-19 04:18:13,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 94 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-19 04:18:13,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34947 states. [2023-11-19 04:18:14,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34947 to 33383. [2023-11-19 04:18:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33383 states, 33331 states have (on average 3.8033662356364943) internal successors, (126770), 33382 states have internal predecessors, (126770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33383 states to 33383 states and 126770 transitions. [2023-11-19 04:18:14,644 INFO L78 Accepts]: Start accepts. Automaton has 33383 states and 126770 transitions. Word has length 15 [2023-11-19 04:18:14,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-19 04:18:14,645 INFO L495 AbstractCegarLoop]: Abstraction has 33383 states and 126770 transitions. [2023-11-19 04:18:14,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-11-19 04:18:14,645 INFO L276 IsEmpty]: Start isEmpty. Operand 33383 states and 126770 transitions. [2023-11-19 04:18:14,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-19 04:18:14,647 INFO L187 NwaCegarLoop]: Found error trace [2023-11-19 04:18:14,647 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-11-19 04:18:14,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-19 04:18:14,648 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err1ASSERT_VIOLATIONDATA_RACE, thr1Err0ASSERT_VIOLATIONDATA_RACE, thr1Err3ASSERT_VIOLATIONDATA_RACE, thr1Err2ASSERT_VIOLATIONDATA_RACE (and 13 more)] === [2023-11-19 04:18:14,648 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-19 04:18:14,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1777172066, now seen corresponding path program 1 times [2023-11-19 04:18:14,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-19 04:18:14,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475153158] [2023-11-19 04:18:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-19 04:18:14,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-19 04:18:14,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:18:14,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-19 04:18:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-19 04:18:14,683 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2023-11-19 04:18:14,683 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-19 04:18:14,683 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (16 of 17 remaining) [2023-11-19 04:18:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (15 of 17 remaining) [2023-11-19 04:18:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (14 of 17 remaining) [2023-11-19 04:18:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (13 of 17 remaining) [2023-11-19 04:18:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (12 of 17 remaining) [2023-11-19 04:18:14,684 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (11 of 17 remaining) [2023-11-19 04:18:14,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (10 of 17 remaining) [2023-11-19 04:18:14,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (9 of 17 remaining) [2023-11-19 04:18:14,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (8 of 17 remaining) [2023-11-19 04:18:14,685 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (7 of 17 remaining) [2023-11-19 04:18:14,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (6 of 17 remaining) [2023-11-19 04:18:14,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (5 of 17 remaining) [2023-11-19 04:18:14,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (4 of 17 remaining) [2023-11-19 04:18:14,686 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONDATA_RACE (3 of 17 remaining) [2023-11-19 04:18:14,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONDATA_RACE (2 of 17 remaining) [2023-11-19 04:18:14,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err3ASSERT_VIOLATIONDATA_RACE (1 of 17 remaining) [2023-11-19 04:18:14,687 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONDATA_RACE (0 of 17 remaining) [2023-11-19 04:18:14,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-19 04:18:14,688 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-11-19 04:18:14,688 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-11-19 04:18:14,688 INFO L514 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-11-19 04:18:14,737 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-11-19 04:18:14,742 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2023-11-19 04:18:14,743 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 299 places, 323 transitions, 674 flow [2023-11-19 04:18:14,743 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 299 places, 323 transitions, 674 flow [2023-11-19 04:18:14,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 299 places, 323 transitions, 674 flow [2023-11-19 04:18:14,849 INFO L124 PetriNetUnfolderBase]: 37/373 cut-off events. [2023-11-19 04:18:14,849 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-11-19 04:18:14,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392 conditions, 373 events. 37/373 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1349 event pairs, 0 based on Foata normal form. 0/315 useless extension candidates. Maximal degree in co-relation 297. Up to 10 conditions per place. [2023-11-19 04:18:14,888 INFO L119 LiptonReduction]: Number of co-enabled transitions 67480