./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for data races Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 03:07:06,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 03:07:06,207 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 03:07:06,248 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 03:07:06,248 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 03:07:06,251 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 03:07:06,252 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 03:07:06,253 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 03:07:06,256 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 03:07:06,260 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 03:07:06,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 03:07:06,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 03:07:06,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 03:07:06,267 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 03:07:06,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 03:07:06,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 03:07:06,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 03:07:06,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 03:07:06,280 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 03:07:06,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 03:07:06,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 03:07:06,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 03:07:06,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 03:07:06,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 03:07:06,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 03:07:06,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 03:07:06,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 03:07:06,298 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 03:07:06,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 03:07:06,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 03:07:06,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 03:07:06,301 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 03:07:06,302 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 03:07:06,303 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 03:07:06,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 03:07:06,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 03:07:06,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 03:07:06,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 03:07:06,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 03:07:06,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 03:07:06,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 03:07:06,308 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 03:07:06,342 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 03:07:06,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 03:07:06,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 03:07:06,343 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 03:07:06,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 03:07:06,344 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 03:07:06,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 03:07:06,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 03:07:06,345 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 03:07:06,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 03:07:06,346 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 03:07:06,347 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 03:07:06,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 03:07:06,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 03:07:06,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 03:07:06,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 03:07:06,348 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 03:07:06,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 03:07:06,348 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 03:07:06,348 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 03:07:06,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 03:07:06,349 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 03:07:06,349 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 03:07:06,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 03:07:06,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 03:07:06,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 03:07:06,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 03:07:06,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 03:07:06,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 03:07:06,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 03:07:06,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 03:07:06,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 03:07:06,351 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 03:07:06,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 03:07:06,351 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 03:07:06,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 03:07:06,352 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 03:07:06,352 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/UAutomizer-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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f41f3c018db74ffccd5759d166eb9816a1bf73b1747e3e539ecb5bf51feb56af Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-29 03:07:06,656 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 03:07:06,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 03:07:06,676 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 03:07:06,677 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 03:07:06,678 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 03:07:06,679 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-08-29 03:07:07,904 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 03:07:08,187 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 03:07:08,188 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i [2023-08-29 03:07:08,205 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddec6306e/bea97389c83647529ba38ee75747e9f0/FLAGdb5fe5183 [2023-08-29 03:07:08,219 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ddec6306e/bea97389c83647529ba38ee75747e9f0 [2023-08-29 03:07:08,221 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 03:07:08,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 03:07:08,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 03:07:08,224 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 03:07:08,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 03:07:08,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:07:08" (1/1) ... [2023-08-29 03:07:08,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@433f43b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08, skipping insertion in model container [2023-08-29 03:07:08,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:07:08" (1/1) ... [2023-08-29 03:07:08,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 03:07:08,270 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 03:07:08,665 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2023-08-29 03:07:08,686 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 03:07:08,687 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 03:07:08,689 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 03:07:08,691 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 03:07:08,732 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 03:07:08,745 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 03:07:08,792 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_90-arrayloop2_racing.i[47038,47051] [2023-08-29 03:07:08,796 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 03:07:08,803 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 03:07:08,806 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 03:07:08,808 WARN L1562 CHandler]: Possible shadowing of function new [2023-08-29 03:07:08,831 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 03:07:08,926 INFO L208 MainTranslator]: Completed translation [2023-08-29 03:07:08,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08 WrapperNode [2023-08-29 03:07:08,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 03:07:08,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 03:07:08,929 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 03:07:08,929 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 03:07:08,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08" (1/1) ... [2023-08-29 03:07:08,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08" (1/1) ... [2023-08-29 03:07:09,007 INFO L138 Inliner]: procedures = 278, calls = 64, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 460 [2023-08-29 03:07:09,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 03:07:09,008 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 03:07:09,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 03:07:09,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 03:07:09,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08" (1/1) ... [2023-08-29 03:07:09,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08" (1/1) ... [2023-08-29 03:07:09,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08" (1/1) ... [2023-08-29 03:07:09,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08" (1/1) ... [2023-08-29 03:07:09,055 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08" (1/1) ... [2023-08-29 03:07:09,062 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08" (1/1) ... [2023-08-29 03:07:09,066 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08" (1/1) ... [2023-08-29 03:07:09,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08" (1/1) ... [2023-08-29 03:07:09,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 03:07:09,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 03:07:09,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 03:07:09,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 03:07:09,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08" (1/1) ... [2023-08-29 03:07:09,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 03:07:09,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:07:09,134 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-29 03:07:09,158 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-29 03:07:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 03:07:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-29 03:07:09,171 INFO L130 BoogieDeclarations]: Found specification of procedure t1_fun [2023-08-29 03:07:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure t1_fun [2023-08-29 03:07:09,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 03:07:09,172 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 03:07:09,172 INFO L130 BoogieDeclarations]: Found specification of procedure t2_fun [2023-08-29 03:07:09,172 INFO L138 BoogieDeclarations]: Found implementation of procedure t2_fun [2023-08-29 03:07:09,172 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 03:07:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 03:07:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-29 03:07:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 03:07:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-29 03:07:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-29 03:07:09,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 03:07:09,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 03:07:09,176 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-29 03:07:09,384 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 03:07:09,386 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 03:07:10,064 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 03:07:10,079 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 03:07:10,080 INFO L302 CfgBuilder]: Removed 30 assume(true) statements. [2023-08-29 03:07:10,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:07:10 BoogieIcfgContainer [2023-08-29 03:07:10,083 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 03:07:10,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 03:07:10,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 03:07:10,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 03:07:10,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 03:07:08" (1/3) ... [2023-08-29 03:07:10,090 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dc1a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:07:10, skipping insertion in model container [2023-08-29 03:07:10,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:07:08" (2/3) ... [2023-08-29 03:07:10,091 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@67dc1a27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:07:10, skipping insertion in model container [2023-08-29 03:07:10,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:07:10" (3/3) ... [2023-08-29 03:07:10,093 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_90-arrayloop2_racing.i [2023-08-29 03:07:10,100 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 03:07:10,108 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 03:07:10,108 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 26 error locations. [2023-08-29 03:07:10,108 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 03:07:10,265 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-29 03:07:10,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 441 places, 482 transitions, 986 flow [2023-08-29 03:07:10,523 INFO L130 PetriNetUnfolder]: 77/754 cut-off events. [2023-08-29 03:07:10,523 INFO L131 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2023-08-29 03:07:10,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 754 events. 77/754 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3723 event pairs, 0 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 389. Up to 8 conditions per place. [2023-08-29 03:07:10,543 INFO L82 GeneralOperation]: Start removeDead. Operand has 441 places, 482 transitions, 986 flow [2023-08-29 03:07:10,553 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 441 places, 482 transitions, 986 flow [2023-08-29 03:07:10,557 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 03:07:10,565 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 441 places, 482 transitions, 986 flow [2023-08-29 03:07:10,567 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 441 places, 482 transitions, 986 flow [2023-08-29 03:07:10,568 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 441 places, 482 transitions, 986 flow [2023-08-29 03:07:10,671 INFO L130 PetriNetUnfolder]: 77/754 cut-off events. [2023-08-29 03:07:10,672 INFO L131 PetriNetUnfolder]: For 8/10 co-relation queries the response was YES. [2023-08-29 03:07:10,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774 conditions, 754 events. 77/754 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 3723 event pairs, 0 based on Foata normal form. 0/632 useless extension candidates. Maximal degree in co-relation 389. Up to 8 conditions per place. [2023-08-29 03:07:10,719 INFO L119 LiptonReduction]: Number of co-enabled transitions 65736 [2023-08-29 03:08:43,024 WARN L222 SmtUtils]: Spent 52.59s on a formula simplification that was a NOOP. DAG size: 222 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 03:09:44,092 WARN L222 SmtUtils]: Spent 1.02m on a formula simplification that was a NOOP. DAG size: 216 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 03:10:46,476 WARN L222 SmtUtils]: Spent 1.04m on a formula simplification that was a NOOP. DAG size: 222 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 03:11:34,491 WARN L222 SmtUtils]: Spent 48.01s on a formula simplification that was a NOOP. DAG size: 216 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 03:14:19,963 WARN L222 SmtUtils]: Spent 2.76m on a formula simplification that was a NOOP. DAG size: 268 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 03:16:37,377 WARN L222 SmtUtils]: Spent 2.29m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 03:18:52,791 WARN L222 SmtUtils]: Spent 2.26m on a formula simplification that was a NOOP. DAG size: 268 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 03:21:00,611 WARN L222 SmtUtils]: Spent 2.13m on a formula simplification that was a NOOP. DAG size: 252 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-08-29 03:21:00,617 INFO L134 LiptonReduction]: Checked pairs total: 334439 [2023-08-29 03:21:00,617 INFO L136 LiptonReduction]: Total number of compositions: 367 [2023-08-29 03:21:00,630 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 03:21:00,634 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=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@5552780e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 03:21:00,634 INFO L358 AbstractCegarLoop]: Starting to check reachability of 40 error locations. [2023-08-29 03:21:00,636 INFO L130 PetriNetUnfolder]: 0/2 cut-off events. [2023-08-29 03:21:00,636 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 03:21:00,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:21:00,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-29 03:21:00,638 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, t1_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-29 03:21:00,642 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:21:00,642 INFO L85 PathProgramCache]: Analyzing trace with hash 57719, now seen corresponding path program 1 times [2023-08-29 03:21:00,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:21:00,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045665564] [2023-08-29 03:21:00,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:21:00,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:21:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:21:00,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 03:21:00,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:21:00,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045665564] [2023-08-29 03:21:00,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045665564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:21:00,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 03:21:00,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-29 03:21:00,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196036617] [2023-08-29 03:21:00,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:21:00,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-29 03:21:00,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:21:00,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-29 03:21:00,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-29 03:21:00,821 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 440 out of 849 [2023-08-29 03:21:00,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 197 transitions, 416 flow. Second operand has 2 states, 2 states have (on average 441.0) internal successors, (882), 2 states have internal predecessors, (882), 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) [2023-08-29 03:21:00,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:21:00,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 440 of 849 [2023-08-29 03:21:00,829 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:21:04,485 INFO L130 PetriNetUnfolder]: 8558/22101 cut-off events. [2023-08-29 03:21:04,486 INFO L131 PetriNetUnfolder]: For 339/510 co-relation queries the response was YES. [2023-08-29 03:21:04,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34810 conditions, 22101 events. 8558/22101 cut-off events. For 339/510 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 220899 event pairs, 7350 based on Foata normal form. 1292/20548 useless extension candidates. Maximal degree in co-relation 33318. Up to 12562 conditions per place. [2023-08-29 03:21:04,635 INFO L137 encePairwiseOnDemand]: 819/849 looper letters, 69 selfloop transitions, 0 changer transitions 0/167 dead transitions. [2023-08-29 03:21:04,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 167 transitions, 494 flow [2023-08-29 03:21:04,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-29 03:21:04,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-29 03:21:04,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 979 transitions. [2023-08-29 03:21:04,656 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5765606595995288 [2023-08-29 03:21:04,659 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 979 transitions. [2023-08-29 03:21:04,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 979 transitions. [2023-08-29 03:21:04,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:21:04,666 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 979 transitions. [2023-08-29 03:21:04,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 489.5) internal successors, (979), 2 states have internal predecessors, (979), 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) [2023-08-29 03:21:04,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 849.0) internal successors, (2547), 3 states have internal predecessors, (2547), 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) [2023-08-29 03:21:04,681 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 849.0) internal successors, (2547), 3 states have internal predecessors, (2547), 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) [2023-08-29 03:21:04,684 INFO L175 Difference]: Start difference. First operand has 170 places, 197 transitions, 416 flow. Second operand 2 states and 979 transitions. [2023-08-29 03:21:04,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 167 transitions, 494 flow [2023-08-29 03:21:04,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 167 transitions, 494 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 03:21:04,698 INFO L231 Difference]: Finished difference. Result has 161 places, 167 transitions, 356 flow [2023-08-29 03:21:04,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=356, PETRI_PLACES=161, PETRI_TRANSITIONS=167} [2023-08-29 03:21:04,703 INFO L281 CegarLoopForPetriNet]: 170 programPoint places, -9 predicate places. [2023-08-29 03:21:04,703 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 167 transitions, 356 flow [2023-08-29 03:21:04,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 441.0) internal successors, (882), 2 states have internal predecessors, (882), 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) [2023-08-29 03:21:04,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:21:04,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:21:04,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 03:21:04,705 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, t1_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-29 03:21:04,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:21:04,706 INFO L85 PathProgramCache]: Analyzing trace with hash 834541426, now seen corresponding path program 1 times [2023-08-29 03:21:04,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:21:04,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699652914] [2023-08-29 03:21:04,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:21:04,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:21:04,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:21:04,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 03:21:04,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:21:04,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699652914] [2023-08-29 03:21:04,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699652914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:21:04,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 03:21:04,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 03:21:04,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145448804] [2023-08-29 03:21:04,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:21:04,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 03:21:04,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:21:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 03:21:04,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 03:21:04,875 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 849 [2023-08-29 03:21:04,876 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 167 transitions, 356 flow. Second operand has 3 states, 3 states have (on average 437.6666666666667) internal successors, (1313), 3 states have internal predecessors, (1313), 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) [2023-08-29 03:21:04,877 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:21:04,877 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 849 [2023-08-29 03:21:04,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:21:06,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 03:21:10,316 INFO L130 PetriNetUnfolder]: 8559/22104 cut-off events. [2023-08-29 03:21:10,316 INFO L131 PetriNetUnfolder]: For 339/510 co-relation queries the response was YES. [2023-08-29 03:21:10,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34817 conditions, 22104 events. 8559/22104 cut-off events. For 339/510 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 221036 event pairs, 7350 based on Foata normal form. 0/19258 useless extension candidates. Maximal degree in co-relation 34812. Up to 12562 conditions per place. [2023-08-29 03:21:10,438 INFO L137 encePairwiseOnDemand]: 846/849 looper letters, 70 selfloop transitions, 2 changer transitions 0/170 dead transitions. [2023-08-29 03:21:10,438 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 170 transitions, 506 flow [2023-08-29 03:21:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 03:21:10,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 03:21:10,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1381 transitions. [2023-08-29 03:21:10,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5422065174715351 [2023-08-29 03:21:10,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1381 transitions. [2023-08-29 03:21:10,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1381 transitions. [2023-08-29 03:21:10,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:21:10,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1381 transitions. [2023-08-29 03:21:10,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 460.3333333333333) internal successors, (1381), 3 states have internal predecessors, (1381), 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) [2023-08-29 03:21:10,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 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) [2023-08-29 03:21:10,452 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 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) [2023-08-29 03:21:10,452 INFO L175 Difference]: Start difference. First operand has 161 places, 167 transitions, 356 flow. Second operand 3 states and 1381 transitions. [2023-08-29 03:21:10,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 170 transitions, 506 flow [2023-08-29 03:21:10,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 170 transitions, 506 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 03:21:10,459 INFO L231 Difference]: Finished difference. Result has 164 places, 168 transitions, 368 flow [2023-08-29 03:21:10,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=368, PETRI_PLACES=164, PETRI_TRANSITIONS=168} [2023-08-29 03:21:10,461 INFO L281 CegarLoopForPetriNet]: 170 programPoint places, -6 predicate places. [2023-08-29 03:21:10,462 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 168 transitions, 368 flow [2023-08-29 03:21:10,463 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 437.6666666666667) internal successors, (1313), 3 states have internal predecessors, (1313), 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) [2023-08-29 03:21:10,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:21:10,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:21:10,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-29 03:21:10,464 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, t1_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-29 03:21:10,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:21:10,467 INFO L85 PathProgramCache]: Analyzing trace with hash 668395628, now seen corresponding path program 1 times [2023-08-29 03:21:10,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:21:10,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525468055] [2023-08-29 03:21:10,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:21:10,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:21:10,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:21:10,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 03:21:10,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:21:10,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525468055] [2023-08-29 03:21:10,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525468055] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:21:10,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 03:21:10,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 03:21:10,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574490092] [2023-08-29 03:21:10,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:21:10,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 03:21:10,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:21:10,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 03:21:10,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 03:21:10,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 849 [2023-08-29 03:21:10,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 168 transitions, 368 flow. Second operand has 3 states, 3 states have (on average 438.3333333333333) internal successors, (1315), 3 states have internal predecessors, (1315), 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) [2023-08-29 03:21:10,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:21:10,587 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 849 [2023-08-29 03:21:10,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:21:14,092 INFO L130 PetriNetUnfolder]: 8559/22106 cut-off events. [2023-08-29 03:21:14,092 INFO L131 PetriNetUnfolder]: For 339/510 co-relation queries the response was YES. [2023-08-29 03:21:14,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34828 conditions, 22106 events. 8559/22106 cut-off events. For 339/510 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 221028 event pairs, 7350 based on Foata normal form. 2/19265 useless extension candidates. Maximal degree in co-relation 34821. Up to 12565 conditions per place. [2023-08-29 03:21:14,208 INFO L137 encePairwiseOnDemand]: 846/849 looper letters, 69 selfloop transitions, 2 changer transitions 0/169 dead transitions. [2023-08-29 03:21:14,208 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 169 transitions, 512 flow [2023-08-29 03:21:14,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 03:21:14,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 03:21:14,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1379 transitions. [2023-08-29 03:21:14,216 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.541421279937181 [2023-08-29 03:21:14,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1379 transitions. [2023-08-29 03:21:14,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1379 transitions. [2023-08-29 03:21:14,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:21:14,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1379 transitions. [2023-08-29 03:21:14,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 459.6666666666667) internal successors, (1379), 3 states have internal predecessors, (1379), 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) [2023-08-29 03:21:14,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 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) [2023-08-29 03:21:14,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 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) [2023-08-29 03:21:14,226 INFO L175 Difference]: Start difference. First operand has 164 places, 168 transitions, 368 flow. Second operand 3 states and 1379 transitions. [2023-08-29 03:21:14,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 169 transitions, 512 flow [2023-08-29 03:21:14,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 169 transitions, 510 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 03:21:14,234 INFO L231 Difference]: Finished difference. Result has 166 places, 169 transitions, 380 flow [2023-08-29 03:21:14,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=166, PETRI_TRANSITIONS=169} [2023-08-29 03:21:14,236 INFO L281 CegarLoopForPetriNet]: 170 programPoint places, -4 predicate places. [2023-08-29 03:21:14,237 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 169 transitions, 380 flow [2023-08-29 03:21:14,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 438.3333333333333) internal successors, (1315), 3 states have internal predecessors, (1315), 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) [2023-08-29 03:21:14,238 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:21:14,238 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:21:14,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-29 03:21:14,238 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, t1_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-29 03:21:14,239 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:21:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash -124414999, now seen corresponding path program 1 times [2023-08-29 03:21:14,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:21:14,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104834988] [2023-08-29 03:21:14,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:21:14,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:21:14,328 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 03:21:14,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1614958782] [2023-08-29 03:21:14,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:21:14,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:21:14,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:21:14,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 03:21:14,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-29 03:21:14,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:21:14,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1107 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-29 03:21:14,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 03:21:14,794 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-29 03:21:14,795 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 03:21:14,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:21:14,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104834988] [2023-08-29 03:21:14,795 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 03:21:14,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614958782] [2023-08-29 03:21:14,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1614958782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:21:14,796 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 03:21:14,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-29 03:21:14,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897990042] [2023-08-29 03:21:14,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:21:14,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 03:21:14,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:21:14,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 03:21:14,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 03:21:14,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 436 out of 849 [2023-08-29 03:21:14,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 169 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 438.6666666666667) internal successors, (1316), 3 states have internal predecessors, (1316), 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) [2023-08-29 03:21:14,812 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:21:14,812 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 436 of 849 [2023-08-29 03:21:14,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:21:17,876 INFO L130 PetriNetUnfolder]: 8306/20754 cut-off events. [2023-08-29 03:21:17,876 INFO L131 PetriNetUnfolder]: For 438/599 co-relation queries the response was YES. [2023-08-29 03:21:17,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33385 conditions, 20754 events. 8306/20754 cut-off events. For 438/599 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 205786 event pairs, 3381 based on Foata normal form. 0/18239 useless extension candidates. Maximal degree in co-relation 33377. Up to 12402 conditions per place. [2023-08-29 03:21:17,993 INFO L137 encePairwiseOnDemand]: 846/849 looper letters, 93 selfloop transitions, 2 changer transitions 0/193 dead transitions. [2023-08-29 03:21:17,994 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 193 transitions, 618 flow [2023-08-29 03:21:17,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 03:21:17,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 03:21:17,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1402 transitions. [2023-08-29 03:21:17,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5504515115822536 [2023-08-29 03:21:17,998 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1402 transitions. [2023-08-29 03:21:17,998 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1402 transitions. [2023-08-29 03:21:17,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:21:17,999 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1402 transitions. [2023-08-29 03:21:18,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 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) [2023-08-29 03:21:18,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 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) [2023-08-29 03:21:18,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 849.0) internal successors, (3396), 4 states have internal predecessors, (3396), 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) [2023-08-29 03:21:18,008 INFO L175 Difference]: Start difference. First operand has 166 places, 169 transitions, 380 flow. Second operand 3 states and 1402 transitions. [2023-08-29 03:21:18,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 193 transitions, 618 flow [2023-08-29 03:21:18,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 193 transitions, 614 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 03:21:18,014 INFO L231 Difference]: Finished difference. Result has 168 places, 169 transitions, 384 flow [2023-08-29 03:21:18,014 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=384, PETRI_PLACES=168, PETRI_TRANSITIONS=169} [2023-08-29 03:21:18,015 INFO L281 CegarLoopForPetriNet]: 170 programPoint places, -2 predicate places. [2023-08-29 03:21:18,015 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 169 transitions, 384 flow [2023-08-29 03:21:18,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 438.6666666666667) internal successors, (1316), 3 states have internal predecessors, (1316), 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) [2023-08-29 03:21:18,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:21:18,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:21:18,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-29 03:21:18,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:21:18,225 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, t1_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-29 03:21:18,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:21:18,226 INFO L85 PathProgramCache]: Analyzing trace with hash 469403172, now seen corresponding path program 1 times [2023-08-29 03:21:18,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:21:18,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954662980] [2023-08-29 03:21:18,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:21:18,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:21:18,301 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 03:21:18,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1279929200] [2023-08-29 03:21:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:21:18,302 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:21:18,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:21:18,304 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 03:21:18,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-29 03:21:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 03:21:18,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1132 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 03:21:18,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 03:21:18,718 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 03:21:18,718 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 03:21:18,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 03:21:18,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:21:18,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954662980] [2023-08-29 03:21:18,740 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 03:21:18,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1279929200] [2023-08-29 03:21:18,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1279929200] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 03:21:18,741 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-08-29 03:21:18,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-08-29 03:21:18,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231722671] [2023-08-29 03:21:18,741 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-08-29 03:21:18,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 03:21:18,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:21:18,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 03:21:18,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 03:21:18,766 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 435 out of 849 [2023-08-29 03:21:18,769 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 169 transitions, 384 flow. Second operand has 6 states, 6 states have (on average 437.1666666666667) internal successors, (2623), 6 states have internal predecessors, (2623), 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) [2023-08-29 03:21:18,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:21:18,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 435 of 849 [2023-08-29 03:21:18,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:21:19,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 03:21:21,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.49s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 03:21:23,183 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 03:21:24,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 03:21:27,193 INFO L130 PetriNetUnfolder]: 8485/21436 cut-off events. [2023-08-29 03:21:27,193 INFO L131 PetriNetUnfolder]: For 430/521 co-relation queries the response was YES. [2023-08-29 03:21:27,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34110 conditions, 21436 events. 8485/21436 cut-off events. For 430/521 co-relation queries the response was YES. Maximal size of possible extension queue 464. Compared 213386 event pairs, 7308 based on Foata normal form. 6/18613 useless extension candidates. Maximal degree in co-relation 34101. Up to 12426 conditions per place. [2023-08-29 03:21:27,354 INFO L137 encePairwiseOnDemand]: 846/849 looper letters, 69 selfloop transitions, 5 changer transitions 0/172 dead transitions. [2023-08-29 03:21:27,354 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 172 transitions, 544 flow [2023-08-29 03:21:27,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 03:21:27,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 03:21:27,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2686 transitions. [2023-08-29 03:21:27,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272870043188065 [2023-08-29 03:21:27,362 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2686 transitions. [2023-08-29 03:21:27,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2686 transitions. [2023-08-29 03:21:27,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 03:21:27,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2686 transitions. [2023-08-29 03:21:27,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 447.6666666666667) internal successors, (2686), 6 states have internal predecessors, (2686), 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) [2023-08-29 03:21:27,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 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) [2023-08-29 03:21:27,386 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 849.0) internal successors, (5943), 7 states have internal predecessors, (5943), 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) [2023-08-29 03:21:27,386 INFO L175 Difference]: Start difference. First operand has 168 places, 169 transitions, 384 flow. Second operand 6 states and 2686 transitions. [2023-08-29 03:21:27,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 172 transitions, 544 flow [2023-08-29 03:21:27,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 172 transitions, 540 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-29 03:21:27,390 INFO L231 Difference]: Finished difference. Result has 174 places, 172 transitions, 422 flow [2023-08-29 03:21:27,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=849, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=422, PETRI_PLACES=174, PETRI_TRANSITIONS=172} [2023-08-29 03:21:27,394 INFO L281 CegarLoopForPetriNet]: 170 programPoint places, 4 predicate places. [2023-08-29 03:21:27,394 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 172 transitions, 422 flow [2023-08-29 03:21:27,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 437.1666666666667) internal successors, (2623), 6 states have internal predecessors, (2623), 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) [2023-08-29 03:21:27,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 03:21:27,398 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 03:21:27,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-29 03:21:27,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:21:27,606 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t1_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr10ASSERT_VIOLATIONDATA_RACE, t1_funErr5ASSERT_VIOLATIONDATA_RACE, t2_funErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr7ASSERT_VIOLATIONDATA_RACE (and 36 more)] === [2023-08-29 03:21:27,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 03:21:27,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1120234791, now seen corresponding path program 2 times [2023-08-29 03:21:27,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 03:21:27,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480110795] [2023-08-29 03:21:27,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 03:21:27,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 03:21:27,813 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-29 03:21:27,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1756119502] [2023-08-29 03:21:27,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 03:21:27,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 03:21:27,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 03:21:27,816 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 03:21:27,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-29 03:21:28,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 03:21:28,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 03:21:28,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-29 03:21:28,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 03:21:28,445 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-08-29 03:21:28,468 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2023-08-29 03:21:28,503 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 03:21:28,505 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 42 [2023-08-29 03:21:28,550 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 03:21:28,551 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 57 [2023-08-29 03:21:28,584 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-29 03:21:28,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 03:21:28,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 03:21:28,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480110795] [2023-08-29 03:21:28,585 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-29 03:21:28,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756119502] [2023-08-29 03:21:28,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756119502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 03:21:28,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 03:21:28,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 03:21:28,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965865130] [2023-08-29 03:21:28,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 03:21:28,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 03:21:28,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 03:21:28,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 03:21:28,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 03:21:29,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 379 out of 849 [2023-08-29 03:21:29,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 172 transitions, 422 flow. Second operand has 6 states, 6 states have (on average 381.5) internal successors, (2289), 6 states have internal predecessors, (2289), 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) [2023-08-29 03:21:29,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 03:21:29,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 379 of 849 [2023-08-29 03:21:29,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 03:21:31,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 03:21:33,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 03:21:35,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2023-08-29 03:21:39,244 INFO L130 PetriNetUnfolder]: 22089/46677 cut-off events. [2023-08-29 03:21:39,245 INFO L131 PetriNetUnfolder]: For 629/728 co-relation queries the response was YES. [2023-08-29 03:21:39,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80146 conditions, 46677 events. 22089/46677 cut-off events. For 629/728 co-relation queries the response was YES. Maximal size of possible extension queue 736. Compared 449388 event pairs, 11777 based on Foata normal form. 1/40346 useless extension candidates. Maximal degree in co-relation 80134. Up to 24040 conditions per place. Killed by 15