./Ultimate.py --spec /storage/repos/ultimate/trunk/examples/svcomp/properties/no-data-race.prp --file /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version efd9311c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/TaipanReach.xml -i /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i -s /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UTaipan-linux --witnessprinter.witness.filename witness.graphml --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 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-efd9311-m [2022-04-18 18:47:21,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-18 18:47:21,320 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-18 18:47:21,349 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-18 18:47:21,350 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-18 18:47:21,351 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-18 18:47:21,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-18 18:47:21,354 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-18 18:47:21,356 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-18 18:47:21,357 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-18 18:47:21,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-18 18:47:21,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-18 18:47:21,360 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-18 18:47:21,362 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-18 18:47:21,363 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-18 18:47:21,364 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-18 18:47:21,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-18 18:47:21,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-18 18:47:21,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-18 18:47:21,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-18 18:47:21,369 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-18 18:47:21,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-18 18:47:21,370 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-18 18:47:21,371 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-18 18:47:21,372 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-18 18:47:21,374 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-18 18:47:21,374 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-18 18:47:21,375 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-18 18:47:21,375 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-18 18:47:21,376 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-18 18:47:21,377 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-18 18:47:21,377 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-18 18:47:21,377 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-18 18:47:21,378 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-18 18:47:21,379 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-18 18:47:21,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-18 18:47:21,380 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-18 18:47:21,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-18 18:47:21,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-18 18:47:21,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-18 18:47:21,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-18 18:47:21,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-18 18:47:21,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/config/svcomp-DataRace-32bit-Taipan_Default.epf [2022-04-18 18:47:21,400 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-18 18:47:21,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-18 18:47:21,401 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-04-18 18:47:21,401 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-04-18 18:47:21,401 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-18 18:47:21,402 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-18 18:47:21,402 INFO L138 SettingsManager]: * User list type=DISABLED [2022-04-18 18:47:21,402 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-04-18 18:47:21,402 INFO L138 SettingsManager]: * Explicit value domain=true [2022-04-18 18:47:21,403 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-04-18 18:47:21,403 INFO L138 SettingsManager]: * Octagon Domain=false [2022-04-18 18:47:21,403 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-04-18 18:47:21,403 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-04-18 18:47:21,404 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-04-18 18:47:21,404 INFO L138 SettingsManager]: * Interval Domain=false [2022-04-18 18:47:21,404 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-04-18 18:47:21,404 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-04-18 18:47:21,405 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-04-18 18:47:21,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-18 18:47:21,405 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-18 18:47:21,406 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-04-18 18:47:21,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-18 18:47:21,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-18 18:47:21,406 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-18 18:47:21,406 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-18 18:47:21,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-18 18:47:21,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-18 18:47:21,407 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2022-04-18 18:47:21,407 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-18 18:47:21,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-18 18:47:21,408 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-18 18:47:21,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-18 18:47:21,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-18 18:47:21,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-18 18:47:21,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:47:21,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-18 18:47:21,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-18 18:47:21,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-18 18:47:21,410 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-04-18 18:47:21,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-18 18:47:21,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-18 18:47:21,410 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-18 18:47:21,410 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-18 18:47:21,411 INFO L138 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:/storage/repos/ultimate/releaseScripts/default/UTaipan-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UTaipan-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3655f01df3eccc3acdb69c97e41dec3a3ff24ca3333b88921cb12b5b6c342936 [2022-04-18 18:47:21,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-18 18:47:21,654 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-18 18:47:21,656 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-18 18:47:21,658 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-18 18:47:21,658 INFO L275 PluginConnector]: CDTParser initialized [2022-04-18 18:47:21,659 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i [2022-04-18 18:47:21,725 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5533d0f6/006d970443d34583837c695f9f20a13d/FLAG4483da8d8 [2022-04-18 18:47:22,163 INFO L306 CDTParser]: Found 1 translation units. [2022-04-18 18:47:22,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i [2022-04-18 18:47:22,175 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5533d0f6/006d970443d34583837c695f9f20a13d/FLAG4483da8d8 [2022-04-18 18:47:22,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c5533d0f6/006d970443d34583837c695f9f20a13d [2022-04-18 18:47:22,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-18 18:47:22,192 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-04-18 18:47:22,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-18 18:47:22,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-18 18:47:22,199 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-18 18:47:22,200 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:47:22" (1/1) ... [2022-04-18 18:47:22,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@96ebd9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:22, skipping insertion in model container [2022-04-18 18:47:22,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.04 06:47:22" (1/1) ... [2022-04-18 18:47:22,207 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-18 18:47:22,240 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-18 18:47:22,500 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i[30694,30707] [2022-04-18 18:47:22,504 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i[30916,30929] [2022-04-18 18:47:22,536 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:47:22,543 INFO L203 MainTranslator]: Completed pre-run [2022-04-18 18:47:22,576 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i[30694,30707] [2022-04-18 18:47:22,582 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-atomic/qrcu-1.i[30916,30929] [2022-04-18 18:47:22,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-18 18:47:22,631 INFO L208 MainTranslator]: Completed translation [2022-04-18 18:47:22,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:22 WrapperNode [2022-04-18 18:47:22,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-18 18:47:22,636 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-04-18 18:47:22,636 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-04-18 18:47:22,636 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-04-18 18:47:22,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:22" (1/1) ... [2022-04-18 18:47:22,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:22" (1/1) ... [2022-04-18 18:47:22,724 INFO L137 Inliner]: procedures = 177, calls = 54, calls flagged for inlining = 15, calls inlined = 17, statements flattened = 473 [2022-04-18 18:47:22,726 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-04-18 18:47:22,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-18 18:47:22,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-18 18:47:22,732 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-18 18:47:22,739 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:22" (1/1) ... [2022-04-18 18:47:22,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:22" (1/1) ... [2022-04-18 18:47:22,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:22" (1/1) ... [2022-04-18 18:47:22,767 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:22" (1/1) ... [2022-04-18 18:47:22,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:22" (1/1) ... [2022-04-18 18:47:22,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:22" (1/1) ... [2022-04-18 18:47:22,799 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:22" (1/1) ... [2022-04-18 18:47:22,803 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-18 18:47:22,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-18 18:47:22,804 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-18 18:47:22,804 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-18 18:47:22,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:22" (1/1) ... [2022-04-18 18:47:22,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-18 18:47:22,832 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 [2022-04-18 18:47:22,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-18 18:47:22,852 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-18 18:47:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader1 [2022-04-18 18:47:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader1 [2022-04-18 18:47:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_reader2 [2022-04-18 18:47:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_reader2 [2022-04-18 18:47:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-18 18:47:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-18 18:47:22,876 INFO L130 BoogieDeclarations]: Found specification of procedure qrcu_updater [2022-04-18 18:47:22,876 INFO L138 BoogieDeclarations]: Found implementation of procedure qrcu_updater [2022-04-18 18:47:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-04-18 18:47:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-18 18:47:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-04-18 18:47:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-18 18:47:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-18 18:47:22,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-18 18:47:22,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-18 18:47:22,879 WARN L208 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-04-18 18:47:22,985 INFO L234 CfgBuilder]: Building ICFG [2022-04-18 18:47:22,986 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-18 18:47:23,535 INFO L275 CfgBuilder]: Performing block encoding [2022-04-18 18:47:23,815 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-18 18:47:23,816 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-04-18 18:47:23,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:47:23 BoogieIcfgContainer [2022-04-18 18:47:23,819 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-18 18:47:23,821 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-18 18:47:23,821 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-18 18:47:23,825 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-18 18:47:23,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.04 06:47:22" (1/3) ... [2022-04-18 18:47:23,826 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d6accc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:47:23, skipping insertion in model container [2022-04-18 18:47:23,826 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.04 06:47:22" (2/3) ... [2022-04-18 18:47:23,827 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d6accc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.04 06:47:23, skipping insertion in model container [2022-04-18 18:47:23,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.04 06:47:23" (3/3) ... [2022-04-18 18:47:23,829 INFO L111 eAbstractionObserver]: Analyzing ICFG qrcu-1.i [2022-04-18 18:47:23,833 WARN L147 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-04-18 18:47:23,834 INFO L202 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-18 18:47:23,834 INFO L161 ceAbstractionStarter]: Applying trace abstraction to program that has 59 error locations. [2022-04-18 18:47:23,834 INFO L504 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-04-18 18:47:23,961 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-04-18 18:47:24,012 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-18 18:47:24,020 INFO L340 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=LoopsAndPotentialCycles, 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 [2022-04-18 18:47:24,021 INFO L341 AbstractCegarLoop]: Starting to check reachability of 118 error locations. [2022-04-18 18:47:24,040 INFO L116 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-04-18 18:47:24,051 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 333 places, 341 transitions, 706 flow [2022-04-18 18:47:24,054 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 333 places, 341 transitions, 706 flow [2022-04-18 18:47:24,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 333 places, 341 transitions, 706 flow [2022-04-18 18:47:24,200 INFO L129 PetriNetUnfolder]: 18/338 cut-off events. [2022-04-18 18:47:24,200 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-04-18 18:47:24,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 338 events. 18/338 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1050 event pairs, 0 based on Foata normal form. 0/261 useless extension candidates. Maximal degree in co-relation 284. Up to 4 conditions per place. [2022-04-18 18:47:24,266 INFO L116 LiptonReduction]: Number of co-enabled transitions 47166 [2022-04-18 18:48:33,962 INFO L131 LiptonReduction]: Checked pairs total: 255660 [2022-04-18 18:48:33,963 INFO L133 LiptonReduction]: Total number of compositions: 284 [2022-04-18 18:48:33,994 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 185 places, 191 transitions, 406 flow [2022-04-18 18:48:48,866 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 546553 states, 533936 states have (on average 4.180418626951544) internal successors, (2232076), 546552 states have internal predecessors, (2232076), 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) [2022-04-18 18:48:49,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 546553 states, 533936 states have (on average 4.180418626951544) internal successors, (2232076), 546552 states have internal predecessors, (2232076), 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) [2022-04-18 18:48:49,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-04-18 18:48:49,766 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:48:49,767 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-04-18 18:48:49,767 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting qrcu_reader1Err3ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 115 more)] === [2022-04-18 18:48:49,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:48:49,772 INFO L85 PathProgramCache]: Analyzing trace with hash 59807259, now seen corresponding path program 1 times [2022-04-18 18:48:49,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:48:49,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599777035] [2022-04-18 18:48:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:48:49,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:48:49,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:48:49,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:48:49,992 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:48:49,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599777035] [2022-04-18 18:48:49,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599777035] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:48:49,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:48:49,993 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-04-18 18:48:49,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159136970] [2022-04-18 18:48:49,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:48:49,998 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-04-18 18:48:49,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:48:50,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-04-18 18:48:50,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-04-18 18:48:51,021 INFO L87 Difference]: Start difference. First operand has 546553 states, 533936 states have (on average 4.180418626951544) internal successors, (2232076), 546552 states have internal predecessors, (2232076), 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 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-04-18 18:48:55,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:48:55,809 INFO L93 Difference]: Finished difference Result 204461 states and 821093 transitions. [2022-04-18 18:48:55,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-04-18 18:48:55,812 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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 4 [2022-04-18 18:48:55,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:48:58,279 INFO L225 Difference]: With dead ends: 204461 [2022-04-18 18:48:58,280 INFO L226 Difference]: Without dead ends: 204460 [2022-04-18 18:48:58,281 INFO L912 BasicCegarLoop]: 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 [2022-04-18 18:48:58,284 INFO L913 BasicCegarLoop]: 83 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-18 18:48:58,285 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 83 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-18 18:48:58,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204460 states. [2022-04-18 18:49:04,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204460 to 204460. [2022-04-18 18:49:05,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204460 states, 203573 states have (on average 4.033398338679491) internal successors, (821091), 204459 states have internal predecessors, (821091), 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) [2022-04-18 18:49:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204460 states to 204460 states and 821091 transitions. [2022-04-18 18:49:08,013 INFO L78 Accepts]: Start accepts. Automaton has 204460 states and 821091 transitions. Word has length 4 [2022-04-18 18:49:08,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-18 18:49:08,013 INFO L478 AbstractCegarLoop]: Abstraction has 204460 states and 821091 transitions. [2022-04-18 18:49:08,014 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 4.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2022-04-18 18:49:08,014 INFO L276 IsEmpty]: Start isEmpty. Operand 204460 states and 821091 transitions. [2022-04-18 18:49:08,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-04-18 18:49:08,014 INFO L491 BasicCegarLoop]: Found error trace [2022-04-18 18:49:08,014 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-04-18 18:49:08,014 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-18 18:49:08,015 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE === [qrcu_reader1Err0ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err7ASSERT_VIOLATIONDATA_RACE, qrcu_reader1Err1ASSERT_VIOLATIONDATA_RACE (and 115 more)] === [2022-04-18 18:49:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-18 18:49:08,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1854018972, now seen corresponding path program 1 times [2022-04-18 18:49:08,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-04-18 18:49:08,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035228233] [2022-04-18 18:49:08,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-18 18:49:08,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-18 18:49:08,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-18 18:49:08,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-18 18:49:08,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-04-18 18:49:08,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035228233] [2022-04-18 18:49:08,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035228233] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-18 18:49:08,070 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-18 18:49:08,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-04-18 18:49:08,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722449270] [2022-04-18 18:49:08,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-18 18:49:08,076 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-18 18:49:08,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-04-18 18:49:08,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-18 18:49:08,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-18 18:49:08,078 INFO L87 Difference]: Start difference. First operand 204460 states and 821091 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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) [2022-04-18 18:49:10,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-18 18:49:10,790 INFO L93 Difference]: Finished difference Result 234608 states and 928689 transitions. [2022-04-18 18:49:10,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-18 18:49:10,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 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 [2022-04-18 18:49:10,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-18 18:49:13,153 INFO L225 Difference]: With dead ends: 234608 [2022-04-18 18:49:13,153 INFO L226 Difference]: Without dead ends: 234608 [2022-04-18 18:49:13,154 INFO L912 BasicCegarLoop]: 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 [2022-04-18 18:49:13,155 INFO L913 BasicCegarLoop]: 121 mSDtfsCounter, 143 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-04-18 18:49:13,155 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 183 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-04-18 18:49:13,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234608 states. [2022-04-18 18:49:19,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234608 to 194864. [2022-04-18 18:49:20,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194864 states, 194194 states have (on average 3.9977342245383483) internal successors, (776336), 194863 states have internal predecessors, (776336), 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)