./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/no-data-race.prp --file ../../../trunk/examples/svcomp/goblint-regression/06-symbeq_05-funloop_hard2.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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/06-symbeq_05-funloop_hard2.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 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-29 17:31:03,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-29 17:31:03,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-29 17:31:03,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-29 17:31:03,253 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-29 17:31:03,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-29 17:31:03,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-29 17:31:03,261 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-29 17:31:03,263 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-29 17:31:03,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-29 17:31:03,268 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-29 17:31:03,270 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-29 17:31:03,270 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-29 17:31:03,272 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-29 17:31:03,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-29 17:31:03,278 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-29 17:31:03,279 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-29 17:31:03,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-29 17:31:03,282 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-29 17:31:03,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-29 17:31:03,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-29 17:31:03,289 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-29 17:31:03,290 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-29 17:31:03,291 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-29 17:31:03,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-29 17:31:03,298 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-29 17:31:03,298 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-29 17:31:03,300 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-29 17:31:03,301 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-29 17:31:03,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-29 17:31:03,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-29 17:31:03,303 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-29 17:31:03,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-29 17:31:03,305 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-29 17:31:03,306 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-29 17:31:03,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-29 17:31:03,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-29 17:31:03,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-29 17:31:03,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-29 17:31:03,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-29 17:31:03,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-29 17:31:03,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DataRace-32bit-Automizer_Default.epf [2023-08-29 17:31:03,342 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-29 17:31:03,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-29 17:31:03,343 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-29 17:31:03,344 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-29 17:31:03,344 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-29 17:31:03,345 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-29 17:31:03,345 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-29 17:31:03,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-29 17:31:03,345 INFO L138 SettingsManager]: * Use SBE=true [2023-08-29 17:31:03,346 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-29 17:31:03,346 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-29 17:31:03,347 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-08-29 17:31:03,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-29 17:31:03,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-29 17:31:03,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-29 17:31:03,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-29 17:31:03,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-29 17:31:03,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-29 17:31:03,348 INFO L138 SettingsManager]: * Check absence of data races in concurrent programs=true [2023-08-29 17:31:03,348 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-29 17:31:03,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-29 17:31:03,348 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-29 17:31:03,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-29 17:31:03,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-29 17:31:03,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-29 17:31:03,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-29 17:31:03,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 17:31:03,349 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-29 17:31:03,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-29 17:31:03,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-29 17:31:03,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-29 17:31:03,350 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-29 17:31:03,350 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-29 17:31:03,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-29 17:31:03,351 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-29 17:31:03,351 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-29 17:31:03,351 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-29 17:31:03,351 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! data-race) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9e83a031749850377e0f1ecd2c361048b8f87f697f146600048034d31c93bd9a Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-29 17:31:03,674 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-29 17:31:03,694 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-29 17:31:03,696 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-29 17:31:03,697 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-29 17:31:03,697 INFO L275 PluginConnector]: CDTParser initialized [2023-08-29 17:31:03,698 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/06-symbeq_05-funloop_hard2.i [2023-08-29 17:31:04,803 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-29 17:31:05,027 INFO L351 CDTParser]: Found 1 translation units. [2023-08-29 17:31:05,027 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/06-symbeq_05-funloop_hard2.i [2023-08-29 17:31:05,043 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d4dc1603/c2fc52bdb64643f58e1db3832a74ac8e/FLAGba8ec4c90 [2023-08-29 17:31:05,056 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4d4dc1603/c2fc52bdb64643f58e1db3832a74ac8e [2023-08-29 17:31:05,059 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-29 17:31:05,065 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-29 17:31:05,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-29 17:31:05,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-29 17:31:05,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-29 17:31:05,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,076 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d7da689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05, skipping insertion in model container [2023-08-29 17:31:05,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,082 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-29 17:31:05,123 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-29 17:31:05,551 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 17:31:05,571 INFO L203 MainTranslator]: Completed pre-run [2023-08-29 17:31:05,608 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-29 17:31:05,682 INFO L208 MainTranslator]: Completed translation [2023-08-29 17:31:05,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05 WrapperNode [2023-08-29 17:31:05,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-29 17:31:05,684 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-29 17:31:05,684 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-29 17:31:05,684 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-29 17:31:05,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,733 INFO L138 Inliner]: procedures = 262, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 115 [2023-08-29 17:31:05,735 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-29 17:31:05,736 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-29 17:31:05,736 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-29 17:31:05,736 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-29 17:31:05,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,771 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,776 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,777 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,780 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-29 17:31:05,780 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-29 17:31:05,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-29 17:31:05,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-29 17:31:05,781 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (1/1) ... [2023-08-29 17:31:05,787 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-29 17:31:05,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:05,815 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 17:31:05,826 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 17:31:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-29 17:31:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-29 17:31:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-29 17:31:05,858 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-29 17:31:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-29 17:31:05,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-29 17:31:05,860 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-29 17:31:05,861 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-29 17:31:05,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-29 17:31:05,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-29 17:31:05,862 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 17:31:06,049 INFO L236 CfgBuilder]: Building ICFG [2023-08-29 17:31:06,051 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-29 17:31:06,289 INFO L277 CfgBuilder]: Performing block encoding [2023-08-29 17:31:06,296 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-29 17:31:06,296 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-29 17:31:06,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:31:06 BoogieIcfgContainer [2023-08-29 17:31:06,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-29 17:31:06,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-29 17:31:06,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-29 17:31:06,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-29 17:31:06,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 05:31:05" (1/3) ... [2023-08-29 17:31:06,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1672d4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:31:06, skipping insertion in model container [2023-08-29 17:31:06,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 05:31:05" (2/3) ... [2023-08-29 17:31:06,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1672d4fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 05:31:06, skipping insertion in model container [2023-08-29 17:31:06,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 05:31:06" (3/3) ... [2023-08-29 17:31:06,305 INFO L112 eAbstractionObserver]: Analyzing ICFG 06-symbeq_05-funloop_hard2.i [2023-08-29 17:31:06,312 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-29 17:31:06,320 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-29 17:31:06,320 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-08-29 17:31:06,320 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-29 17:31:06,403 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-29 17:31:06,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 122 transitions, 249 flow [2023-08-29 17:31:06,513 INFO L130 PetriNetUnfolder]: 6/121 cut-off events. [2023-08-29 17:31:06,513 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:31:06,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 121 events. 6/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-08-29 17:31:06,518 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 122 transitions, 249 flow [2023-08-29 17:31:06,522 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 121 transitions, 245 flow [2023-08-29 17:31:06,527 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-29 17:31:06,539 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 121 transitions, 245 flow [2023-08-29 17:31:06,542 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 121 transitions, 245 flow [2023-08-29 17:31:06,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 121 transitions, 245 flow [2023-08-29 17:31:06,584 INFO L130 PetriNetUnfolder]: 6/121 cut-off events. [2023-08-29 17:31:06,584 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:31:06,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125 conditions, 121 events. 6/121 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 223 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 99. Up to 2 conditions per place. [2023-08-29 17:31:06,589 INFO L119 LiptonReduction]: Number of co-enabled transitions 4588 [2023-08-29 17:31:07,987 INFO L134 LiptonReduction]: Checked pairs total: 14013 [2023-08-29 17:31:07,987 INFO L136 LiptonReduction]: Total number of compositions: 69 [2023-08-29 17:31:08,010 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-29 17:31:08,016 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;@7a8970c5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-29 17:31:08,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2023-08-29 17:31:08,032 INFO L130 PetriNetUnfolder]: 1/25 cut-off events. [2023-08-29 17:31:08,033 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:31:08,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:08,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:08,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:08,040 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:08,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1699604442, now seen corresponding path program 1 times [2023-08-29 17:31:08,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:08,048 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361103209] [2023-08-29 17:31:08,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:08,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:08,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:08,269 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 17:31:08,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:08,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361103209] [2023-08-29 17:31:08,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361103209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:08,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:31:08,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-29 17:31:08,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494839882] [2023-08-29 17:31:08,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:08,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-29 17:31:08,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:08,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-29 17:31:08,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-29 17:31:08,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 191 [2023-08-29 17:31:08,348 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 55 transitions, 113 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 17:31:08,348 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:08,348 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 191 [2023-08-29 17:31:08,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:08,457 INFO L130 PetriNetUnfolder]: 106/409 cut-off events. [2023-08-29 17:31:08,457 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:31:08,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 627 conditions, 409 events. 106/409 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2223 event pairs, 84 based on Foata normal form. 0/376 useless extension candidates. Maximal degree in co-relation 612. Up to 213 conditions per place. [2023-08-29 17:31:08,461 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 24 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-29 17:31:08,461 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 56 transitions, 167 flow [2023-08-29 17:31:08,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-29 17:31:08,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-29 17:31:08,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-08-29 17:31:08,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.643979057591623 [2023-08-29 17:31:08,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-08-29 17:31:08,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-08-29 17:31:08,483 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:08,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-08-29 17:31:08,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 17:31:08,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 17:31:08,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 17:31:08,496 INFO L175 Difference]: Start difference. First operand has 56 places, 55 transitions, 113 flow. Second operand 3 states and 369 transitions. [2023-08-29 17:31:08,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 56 transitions, 167 flow [2023-08-29 17:31:08,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:08,501 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 124 flow [2023-08-29 17:31:08,503 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-29 17:31:08,508 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 2 predicate places. [2023-08-29 17:31:08,508 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 124 flow [2023-08-29 17:31:08,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 17:31:08,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:08,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:08,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-29 17:31:08,509 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:08,516 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:08,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1558654883, now seen corresponding path program 1 times [2023-08-29 17:31:08,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:08,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932979559] [2023-08-29 17:31:08,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:08,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:08,638 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:08,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:08,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932979559] [2023-08-29 17:31:08,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932979559] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:08,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300657132] [2023-08-29 17:31:08,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:08,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:08,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:08,645 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 17:31:08,683 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 17:31:08,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:08,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 17:31:08,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:08,780 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:31:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:08,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300657132] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:31:08,802 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:31:08,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-29 17:31:08,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122263883] [2023-08-29 17:31:08,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:31:08,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 17:31:08,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:08,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 17:31:08,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 17:31:08,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 191 [2023-08-29 17:31:08,823 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 124 flow. Second operand has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 17:31:08,823 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:08,824 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 191 [2023-08-29 17:31:08,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:08,916 INFO L130 PetriNetUnfolder]: 106/412 cut-off events. [2023-08-29 17:31:08,916 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-29 17:31:08,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642 conditions, 412 events. 106/412 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 2237 event pairs, 84 based on Foata normal form. 0/379 useless extension candidates. Maximal degree in co-relation 631. Up to 213 conditions per place. [2023-08-29 17:31:08,919 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 24 selfloop transitions, 5 changer transitions 0/59 dead transitions. [2023-08-29 17:31:08,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 59 transitions, 194 flow [2023-08-29 17:31:08,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:08,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:08,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 710 transitions. [2023-08-29 17:31:08,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195462478184991 [2023-08-29 17:31:08,922 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 710 transitions. [2023-08-29 17:31:08,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 710 transitions. [2023-08-29 17:31:08,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:08,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 710 transitions. [2023-08-29 17:31:08,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 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 17:31:08,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:08,928 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:08,928 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 124 flow. Second operand 6 states and 710 transitions. [2023-08-29 17:31:08,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 59 transitions, 194 flow [2023-08-29 17:31:08,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 59 transitions, 190 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:08,930 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 156 flow [2023-08-29 17:31:08,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=156, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-08-29 17:31:08,931 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 9 predicate places. [2023-08-29 17:31:08,932 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 156 flow [2023-08-29 17:31:08,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 114.71428571428571) internal successors, (803), 7 states have internal predecessors, (803), 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 17:31:08,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:08,933 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:08,943 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 17:31:09,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:09,138 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:09,139 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:09,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1832123143, now seen corresponding path program 2 times [2023-08-29 17:31:09,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:09,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690263077] [2023-08-29 17:31:09,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:09,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:09,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:09,266 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:09,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:09,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690263077] [2023-08-29 17:31:09,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690263077] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:09,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61986077] [2023-08-29 17:31:09,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 17:31:09,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:09,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:09,269 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 17:31:09,271 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 17:31:09,340 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 17:31:09,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:31:09,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-29 17:31:09,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:09,409 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 11 treesize of output 7 [2023-08-29 17:31:09,435 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:31:09,470 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:31:09,471 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:31:09,507 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-29 17:31:09,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:31:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-29 17:31:09,534 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:31:09,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61986077] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:09,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:31:09,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 13 [2023-08-29 17:31:09,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552659762] [2023-08-29 17:31:09,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:09,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-29 17:31:09,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:09,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-29 17:31:09,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-08-29 17:31:09,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 191 [2023-08-29 17:31:09,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 156 flow. Second operand has 9 states, 9 states have (on average 92.33333333333333) internal successors, (831), 9 states have internal predecessors, (831), 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 17:31:09,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:09,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 191 [2023-08-29 17:31:09,871 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:10,391 INFO L130 PetriNetUnfolder]: 691/1606 cut-off events. [2023-08-29 17:31:10,391 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-29 17:31:10,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3019 conditions, 1606 events. 691/1606 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 8354 event pairs, 293 based on Foata normal form. 0/1496 useless extension candidates. Maximal degree in co-relation 2986. Up to 632 conditions per place. [2023-08-29 17:31:10,399 INFO L137 encePairwiseOnDemand]: 175/191 looper letters, 135 selfloop transitions, 27 changer transitions 0/175 dead transitions. [2023-08-29 17:31:10,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 175 transitions, 712 flow [2023-08-29 17:31:10,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-29 17:31:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-29 17:31:10,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1070 transitions. [2023-08-29 17:31:10,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602094240837696 [2023-08-29 17:31:10,403 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1070 transitions. [2023-08-29 17:31:10,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1070 transitions. [2023-08-29 17:31:10,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:10,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1070 transitions. [2023-08-29 17:31:10,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 107.0) internal successors, (1070), 10 states have internal predecessors, (1070), 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 17:31:10,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 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 17:31:10,411 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 191.0) internal successors, (2101), 11 states have internal predecessors, (2101), 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 17:31:10,411 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 156 flow. Second operand 10 states and 1070 transitions. [2023-08-29 17:31:10,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 175 transitions, 712 flow [2023-08-29 17:31:10,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 175 transitions, 698 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:10,416 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 346 flow [2023-08-29 17:31:10,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=346, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2023-08-29 17:31:10,417 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 23 predicate places. [2023-08-29 17:31:10,417 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 346 flow [2023-08-29 17:31:10,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 92.33333333333333) internal successors, (831), 9 states have internal predecessors, (831), 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 17:31:10,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:10,418 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:10,427 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 17:31:10,623 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-29 17:31:10,624 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:10,624 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash 1600781437, now seen corresponding path program 1 times [2023-08-29 17:31:10,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:10,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343609647] [2023-08-29 17:31:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:10,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:10,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:10,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:10,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343609647] [2023-08-29 17:31:10,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343609647] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:10,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111269571] [2023-08-29 17:31:10,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:10,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:10,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:10,769 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 17:31:10,796 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 17:31:10,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:10,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-29 17:31:10,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:10,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:10,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:31:10,921 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-29 17:31:10,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111269571] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:31:10,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:31:10,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-08-29 17:31:10,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625592986] [2023-08-29 17:31:10,923 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:31:10,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-29 17:31:10,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:10,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-29 17:31:10,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-29 17:31:10,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 191 [2023-08-29 17:31:10,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 346 flow. Second operand has 13 states, 13 states have (on average 114.38461538461539) internal successors, (1487), 13 states have internal predecessors, (1487), 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 17:31:10,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:10,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 191 [2023-08-29 17:31:10,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:11,227 INFO L130 PetriNetUnfolder]: 305/1118 cut-off events. [2023-08-29 17:31:11,229 INFO L131 PetriNetUnfolder]: For 363/366 co-relation queries the response was YES. [2023-08-29 17:31:11,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2354 conditions, 1118 events. 305/1118 cut-off events. For 363/366 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 6570 event pairs, 207 based on Foata normal form. 6/1082 useless extension candidates. Maximal degree in co-relation 2296. Up to 545 conditions per place. [2023-08-29 17:31:11,236 INFO L137 encePairwiseOnDemand]: 188/191 looper letters, 28 selfloop transitions, 11 changer transitions 0/90 dead transitions. [2023-08-29 17:31:11,237 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 90 transitions, 460 flow [2023-08-29 17:31:11,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-29 17:31:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-29 17:31:11,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1397 transitions. [2023-08-29 17:31:11,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6095113438045375 [2023-08-29 17:31:11,241 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1397 transitions. [2023-08-29 17:31:11,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1397 transitions. [2023-08-29 17:31:11,241 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:11,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1397 transitions. [2023-08-29 17:31:11,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 116.41666666666667) internal successors, (1397), 12 states have internal predecessors, (1397), 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 17:31:11,249 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 191.0) internal successors, (2483), 13 states have internal predecessors, (2483), 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 17:31:11,250 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 191.0) internal successors, (2483), 13 states have internal predecessors, (2483), 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 17:31:11,250 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 346 flow. Second operand 12 states and 1397 transitions. [2023-08-29 17:31:11,250 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 90 transitions, 460 flow [2023-08-29 17:31:11,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 90 transitions, 459 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:11,258 INFO L231 Difference]: Finished difference. Result has 95 places, 90 transitions, 429 flow [2023-08-29 17:31:11,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=429, PETRI_PLACES=95, PETRI_TRANSITIONS=90} [2023-08-29 17:31:11,259 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 39 predicate places. [2023-08-29 17:31:11,260 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 90 transitions, 429 flow [2023-08-29 17:31:11,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 114.38461538461539) internal successors, (1487), 13 states have internal predecessors, (1487), 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 17:31:11,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:11,261 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:11,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:11,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:11,468 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:11,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:11,468 INFO L85 PathProgramCache]: Analyzing trace with hash -1534492163, now seen corresponding path program 2 times [2023-08-29 17:31:11,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:11,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470925929] [2023-08-29 17:31:11,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:11,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:11,806 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:11,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:11,807 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470925929] [2023-08-29 17:31:11,807 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470925929] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:11,807 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:31:11,807 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:31:11,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816125160] [2023-08-29 17:31:11,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:11,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:11,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:11,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:11,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:31:11,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 191 [2023-08-29 17:31:11,986 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 90 transitions, 429 flow. Second operand has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 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 17:31:11,986 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:11,987 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 191 [2023-08-29 17:31:11,987 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:12,492 INFO L130 PetriNetUnfolder]: 977/2350 cut-off events. [2023-08-29 17:31:12,492 INFO L131 PetriNetUnfolder]: For 2167/2181 co-relation queries the response was YES. [2023-08-29 17:31:12,499 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5852 conditions, 2350 events. 977/2350 cut-off events. For 2167/2181 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 13825 event pairs, 394 based on Foata normal form. 0/2258 useless extension candidates. Maximal degree in co-relation 5770. Up to 1488 conditions per place. [2023-08-29 17:31:12,508 INFO L137 encePairwiseOnDemand]: 176/191 looper letters, 127 selfloop transitions, 46 changer transitions 0/192 dead transitions. [2023-08-29 17:31:12,509 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 192 transitions, 1083 flow [2023-08-29 17:31:12,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:12,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:12,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 710 transitions. [2023-08-29 17:31:12,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6195462478184991 [2023-08-29 17:31:12,511 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 710 transitions. [2023-08-29 17:31:12,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 710 transitions. [2023-08-29 17:31:12,512 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:12,512 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 710 transitions. [2023-08-29 17:31:12,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.33333333333333) internal successors, (710), 6 states have internal predecessors, (710), 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 17:31:12,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:12,515 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:12,515 INFO L175 Difference]: Start difference. First operand has 95 places, 90 transitions, 429 flow. Second operand 6 states and 710 transitions. [2023-08-29 17:31:12,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 192 transitions, 1083 flow [2023-08-29 17:31:12,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 192 transitions, 1035 flow, removed 19 selfloop flow, removed 5 redundant places. [2023-08-29 17:31:12,523 INFO L231 Difference]: Finished difference. Result has 100 places, 131 transitions, 709 flow [2023-08-29 17:31:12,523 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=709, PETRI_PLACES=100, PETRI_TRANSITIONS=131} [2023-08-29 17:31:12,524 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2023-08-29 17:31:12,524 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 131 transitions, 709 flow [2023-08-29 17:31:12,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.0) internal successors, (594), 6 states have internal predecessors, (594), 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 17:31:12,524 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:12,525 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:12,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-29 17:31:12,525 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:12,525 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:12,525 INFO L85 PathProgramCache]: Analyzing trace with hash -303030028, now seen corresponding path program 1 times [2023-08-29 17:31:12,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:12,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268704030] [2023-08-29 17:31:12,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:12,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:12,830 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:12,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:12,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268704030] [2023-08-29 17:31:12,831 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268704030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:12,831 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:31:12,831 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:31:12,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383893425] [2023-08-29 17:31:12,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:12,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:12,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:12,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:12,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:31:12,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 191 [2023-08-29 17:31:12,980 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 131 transitions, 709 flow. Second operand has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 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 17:31:12,980 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:12,980 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 191 [2023-08-29 17:31:12,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:13,638 INFO L130 PetriNetUnfolder]: 1617/3419 cut-off events. [2023-08-29 17:31:13,639 INFO L131 PetriNetUnfolder]: For 4656/4688 co-relation queries the response was YES. [2023-08-29 17:31:13,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10819 conditions, 3419 events. 1617/3419 cut-off events. For 4656/4688 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 19474 event pairs, 555 based on Foata normal form. 0/3295 useless extension candidates. Maximal degree in co-relation 10757. Up to 2681 conditions per place. [2023-08-29 17:31:13,666 INFO L137 encePairwiseOnDemand]: 168/191 looper letters, 170 selfloop transitions, 89 changer transitions 8/274 dead transitions. [2023-08-29 17:31:13,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 274 transitions, 1793 flow [2023-08-29 17:31:13,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:13,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:13,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 689 transitions. [2023-08-29 17:31:13,668 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6012216404886562 [2023-08-29 17:31:13,669 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 689 transitions. [2023-08-29 17:31:13,669 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 689 transitions. [2023-08-29 17:31:13,669 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:13,669 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 689 transitions. [2023-08-29 17:31:13,671 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.83333333333333) internal successors, (689), 6 states have internal predecessors, (689), 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 17:31:13,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:13,673 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:13,673 INFO L175 Difference]: Start difference. First operand has 100 places, 131 transitions, 709 flow. Second operand 6 states and 689 transitions. [2023-08-29 17:31:13,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 274 transitions, 1793 flow [2023-08-29 17:31:13,683 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 274 transitions, 1793 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-29 17:31:13,687 INFO L231 Difference]: Finished difference. Result has 110 places, 214 transitions, 1483 flow [2023-08-29 17:31:13,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1483, PETRI_PLACES=110, PETRI_TRANSITIONS=214} [2023-08-29 17:31:13,688 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 54 predicate places. [2023-08-29 17:31:13,689 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 214 transitions, 1483 flow [2023-08-29 17:31:13,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 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 17:31:13,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:13,689 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:13,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-29 17:31:13,690 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:13,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:13,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1952290432, now seen corresponding path program 1 times [2023-08-29 17:31:13,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:13,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605448985] [2023-08-29 17:31:13,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:13,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:13,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:13,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605448985] [2023-08-29 17:31:13,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605448985] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:13,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:31:13,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:31:13,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052294705] [2023-08-29 17:31:13,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:13,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:13,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:13,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:13,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:31:14,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 191 [2023-08-29 17:31:14,124 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 214 transitions, 1483 flow. Second operand has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 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 17:31:14,124 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:14,124 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 191 [2023-08-29 17:31:14,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:14,874 INFO L130 PetriNetUnfolder]: 1832/3823 cut-off events. [2023-08-29 17:31:14,874 INFO L131 PetriNetUnfolder]: For 9634/9714 co-relation queries the response was YES. [2023-08-29 17:31:14,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14678 conditions, 3823 events. 1832/3823 cut-off events. For 9634/9714 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 22002 event pairs, 612 based on Foata normal form. 0/3694 useless extension candidates. Maximal degree in co-relation 14611. Up to 3283 conditions per place. [2023-08-29 17:31:14,920 INFO L137 encePairwiseOnDemand]: 176/191 looper letters, 229 selfloop transitions, 72 changer transitions 0/306 dead transitions. [2023-08-29 17:31:14,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 306 transitions, 2704 flow [2023-08-29 17:31:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:14,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:14,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 642 transitions. [2023-08-29 17:31:14,923 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5602094240837696 [2023-08-29 17:31:14,923 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 642 transitions. [2023-08-29 17:31:14,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 642 transitions. [2023-08-29 17:31:14,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:14,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 642 transitions. [2023-08-29 17:31:14,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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 17:31:14,928 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:14,929 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:14,929 INFO L175 Difference]: Start difference. First operand has 110 places, 214 transitions, 1483 flow. Second operand 6 states and 642 transitions. [2023-08-29 17:31:14,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 306 transitions, 2704 flow [2023-08-29 17:31:14,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 306 transitions, 2572 flow, removed 66 selfloop flow, removed 0 redundant places. [2023-08-29 17:31:14,952 INFO L231 Difference]: Finished difference. Result has 120 places, 268 transitions, 2178 flow [2023-08-29 17:31:14,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2178, PETRI_PLACES=120, PETRI_TRANSITIONS=268} [2023-08-29 17:31:14,953 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 64 predicate places. [2023-08-29 17:31:14,953 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 268 transitions, 2178 flow [2023-08-29 17:31:14,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 90.0) internal successors, (540), 6 states have internal predecessors, (540), 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 17:31:14,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:14,954 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:14,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-29 17:31:14,955 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:14,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:14,955 INFO L85 PathProgramCache]: Analyzing trace with hash 422815756, now seen corresponding path program 1 times [2023-08-29 17:31:14,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:14,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536003863] [2023-08-29 17:31:14,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:14,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:15,321 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-29 17:31:15,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:15,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536003863] [2023-08-29 17:31:15,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536003863] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:15,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773459139] [2023-08-29 17:31:15,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:15,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:15,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:15,323 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:31:15,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-29 17:31:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:15,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-29 17:31:15,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:15,504 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 13 treesize of output 9 [2023-08-29 17:31:15,527 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:15,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:31:15,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773459139] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:15,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:31:15,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-29 17:31:15,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346780312] [2023-08-29 17:31:15,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:15,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:15,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:15,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:15,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2023-08-29 17:31:15,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 191 [2023-08-29 17:31:15,659 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 268 transitions, 2178 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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 17:31:15,659 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:15,659 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 191 [2023-08-29 17:31:15,659 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:16,637 INFO L130 PetriNetUnfolder]: 2389/6029 cut-off events. [2023-08-29 17:31:16,637 INFO L131 PetriNetUnfolder]: For 18507/18746 co-relation queries the response was YES. [2023-08-29 17:31:16,671 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23061 conditions, 6029 events. 2389/6029 cut-off events. For 18507/18746 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 44900 event pairs, 342 based on Foata normal form. 23/5928 useless extension candidates. Maximal degree in co-relation 22989. Up to 1652 conditions per place. [2023-08-29 17:31:16,699 INFO L137 encePairwiseOnDemand]: 183/191 looper letters, 129 selfloop transitions, 12 changer transitions 0/348 dead transitions. [2023-08-29 17:31:16,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 348 transitions, 3083 flow [2023-08-29 17:31:16,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:16,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:16,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 696 transitions. [2023-08-29 17:31:16,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6073298429319371 [2023-08-29 17:31:16,703 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 696 transitions. [2023-08-29 17:31:16,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 696 transitions. [2023-08-29 17:31:16,704 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:16,704 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 696 transitions. [2023-08-29 17:31:16,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 17:31:16,707 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:16,708 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:16,708 INFO L175 Difference]: Start difference. First operand has 120 places, 268 transitions, 2178 flow. Second operand 6 states and 696 transitions. [2023-08-29 17:31:16,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 348 transitions, 3083 flow [2023-08-29 17:31:16,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 348 transitions, 2881 flow, removed 101 selfloop flow, removed 0 redundant places. [2023-08-29 17:31:16,841 INFO L231 Difference]: Finished difference. Result has 128 places, 278 transitions, 2095 flow [2023-08-29 17:31:16,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2095, PETRI_PLACES=128, PETRI_TRANSITIONS=278} [2023-08-29 17:31:16,844 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 72 predicate places. [2023-08-29 17:31:16,844 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 278 transitions, 2095 flow [2023-08-29 17:31:16,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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 17:31:16,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:16,845 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:16,853 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:17,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:17,050 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:17,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:17,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1743318624, now seen corresponding path program 2 times [2023-08-29 17:31:17,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:17,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808341246] [2023-08-29 17:31:17,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:17,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:17,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:17,621 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-29 17:31:17,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:17,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808341246] [2023-08-29 17:31:17,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808341246] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:17,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398531874] [2023-08-29 17:31:17,623 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 17:31:17,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:17,623 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:17,624 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:31:17,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-29 17:31:17,716 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-29 17:31:17,716 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:31:17,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-29 17:31:17,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:17,763 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 13 treesize of output 9 [2023-08-29 17:31:17,820 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:17,820 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:31:17,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398531874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:17,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:31:17,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-29 17:31:17,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777805445] [2023-08-29 17:31:17,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:17,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:17,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:17,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:17,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-29 17:31:17,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 191 [2023-08-29 17:31:17,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 278 transitions, 2095 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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 17:31:17,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:17,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 191 [2023-08-29 17:31:17,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:18,959 INFO L130 PetriNetUnfolder]: 2681/6686 cut-off events. [2023-08-29 17:31:18,959 INFO L131 PetriNetUnfolder]: For 18610/18859 co-relation queries the response was YES. [2023-08-29 17:31:18,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25962 conditions, 6686 events. 2681/6686 cut-off events. For 18610/18859 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 51069 event pairs, 383 based on Foata normal form. 31/6628 useless extension candidates. Maximal degree in co-relation 25885. Up to 1878 conditions per place. [2023-08-29 17:31:19,024 INFO L137 encePairwiseOnDemand]: 184/191 looper letters, 116 selfloop transitions, 19 changer transitions 0/342 dead transitions. [2023-08-29 17:31:19,024 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 342 transitions, 2888 flow [2023-08-29 17:31:19,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:19,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:19,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 688 transitions. [2023-08-29 17:31:19,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6003490401396161 [2023-08-29 17:31:19,027 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 688 transitions. [2023-08-29 17:31:19,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 688 transitions. [2023-08-29 17:31:19,028 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:19,028 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 688 transitions. [2023-08-29 17:31:19,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 114.66666666666667) internal successors, (688), 6 states have internal predecessors, (688), 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 17:31:19,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:19,032 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:19,032 INFO L175 Difference]: Start difference. First operand has 128 places, 278 transitions, 2095 flow. Second operand 6 states and 688 transitions. [2023-08-29 17:31:19,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 342 transitions, 2888 flow [2023-08-29 17:31:19,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 342 transitions, 2887 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:19,094 INFO L231 Difference]: Finished difference. Result has 134 places, 287 transitions, 2236 flow [2023-08-29 17:31:19,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2236, PETRI_PLACES=134, PETRI_TRANSITIONS=287} [2023-08-29 17:31:19,095 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 78 predicate places. [2023-08-29 17:31:19,095 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 287 transitions, 2236 flow [2023-08-29 17:31:19,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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 17:31:19,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:19,096 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:19,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:19,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:19,301 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t_funErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:19,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:19,301 INFO L85 PathProgramCache]: Analyzing trace with hash -275928975, now seen corresponding path program 1 times [2023-08-29 17:31:19,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:19,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721384376] [2023-08-29 17:31:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:19,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:19,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-29 17:31:19,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:19,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721384376] [2023-08-29 17:31:19,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721384376] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:19,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [574936660] [2023-08-29 17:31:19,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:19,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:19,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:19,646 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:31:19,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-29 17:31:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:19,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-29 17:31:19,768 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:19,819 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 13 treesize of output 9 [2023-08-29 17:31:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:19,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:31:19,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [574936660] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:19,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:31:19,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-29 17:31:19,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744406240] [2023-08-29 17:31:19,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:19,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:19,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:19,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:19,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2023-08-29 17:31:19,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 191 [2023-08-29 17:31:19,936 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 287 transitions, 2236 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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 17:31:19,936 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:19,936 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 191 [2023-08-29 17:31:19,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:20,789 INFO L130 PetriNetUnfolder]: 2367/6020 cut-off events. [2023-08-29 17:31:20,789 INFO L131 PetriNetUnfolder]: For 18090/18296 co-relation queries the response was YES. [2023-08-29 17:31:20,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23786 conditions, 6020 events. 2367/6020 cut-off events. For 18090/18296 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 45566 event pairs, 380 based on Foata normal form. 25/5969 useless extension candidates. Maximal degree in co-relation 23706. Up to 1708 conditions per place. [2023-08-29 17:31:20,829 INFO L137 encePairwiseOnDemand]: 184/191 looper letters, 118 selfloop transitions, 22 changer transitions 0/347 dead transitions. [2023-08-29 17:31:20,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 347 transitions, 3001 flow [2023-08-29 17:31:20,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-29 17:31:20,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-29 17:31:20,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 801 transitions. [2023-08-29 17:31:20,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5991024682124159 [2023-08-29 17:31:20,832 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 801 transitions. [2023-08-29 17:31:20,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 801 transitions. [2023-08-29 17:31:20,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:20,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 801 transitions. [2023-08-29 17:31:20,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 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 17:31:20,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 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 17:31:20,838 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 191.0) internal successors, (1528), 8 states have internal predecessors, (1528), 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 17:31:20,838 INFO L175 Difference]: Start difference. First operand has 134 places, 287 transitions, 2236 flow. Second operand 7 states and 801 transitions. [2023-08-29 17:31:20,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 347 transitions, 3001 flow [2023-08-29 17:31:20,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 347 transitions, 2987 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-29 17:31:20,888 INFO L231 Difference]: Finished difference. Result has 141 places, 290 transitions, 2326 flow [2023-08-29 17:31:20,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2201, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=265, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2326, PETRI_PLACES=141, PETRI_TRANSITIONS=290} [2023-08-29 17:31:20,889 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 85 predicate places. [2023-08-29 17:31:20,890 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 290 transitions, 2326 flow [2023-08-29 17:31:20,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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 17:31:20,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:20,890 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:20,899 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:21,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:21,096 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:21,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:21,096 INFO L85 PathProgramCache]: Analyzing trace with hash 1455599038, now seen corresponding path program 3 times [2023-08-29 17:31:21,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:21,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388412938] [2023-08-29 17:31:21,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:21,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:21,466 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2023-08-29 17:31:21,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:21,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388412938] [2023-08-29 17:31:21,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388412938] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:21,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067984574] [2023-08-29 17:31:21,468 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 17:31:21,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:21,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:21,473 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:31:21,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-29 17:31:21,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-29 17:31:21,578 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:31:21,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 28 conjunts are in the unsatisfiable core [2023-08-29 17:31:21,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:21,614 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 13 treesize of output 9 [2023-08-29 17:31:21,648 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:21,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-29 17:31:21,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067984574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:21,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-29 17:31:21,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2023-08-29 17:31:21,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933627063] [2023-08-29 17:31:21,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:21,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:21,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:21,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:21,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-29 17:31:21,749 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 191 [2023-08-29 17:31:21,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 290 transitions, 2326 flow. Second operand has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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 17:31:21,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:21,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 191 [2023-08-29 17:31:21,751 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:22,612 INFO L130 PetriNetUnfolder]: 2450/6272 cut-off events. [2023-08-29 17:31:22,612 INFO L131 PetriNetUnfolder]: For 21097/21338 co-relation queries the response was YES. [2023-08-29 17:31:22,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25206 conditions, 6272 events. 2450/6272 cut-off events. For 21097/21338 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 50436 event pairs, 286 based on Foata normal form. 12/6191 useless extension candidates. Maximal degree in co-relation 25123. Up to 1680 conditions per place. [2023-08-29 17:31:22,664 INFO L137 encePairwiseOnDemand]: 184/191 looper letters, 130 selfloop transitions, 17 changer transitions 0/354 dead transitions. [2023-08-29 17:31:22,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 354 transitions, 3014 flow [2023-08-29 17:31:22,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:22,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:22,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 698 transitions. [2023-08-29 17:31:22,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6090750436300174 [2023-08-29 17:31:22,667 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 698 transitions. [2023-08-29 17:31:22,668 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 698 transitions. [2023-08-29 17:31:22,668 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:22,668 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 698 transitions. [2023-08-29 17:31:22,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.33333333333333) internal successors, (698), 6 states have internal predecessors, (698), 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 17:31:22,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:22,672 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:22,673 INFO L175 Difference]: Start difference. First operand has 141 places, 290 transitions, 2326 flow. Second operand 6 states and 698 transitions. [2023-08-29 17:31:22,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 354 transitions, 3014 flow [2023-08-29 17:31:22,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 354 transitions, 2974 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-29 17:31:22,737 INFO L231 Difference]: Finished difference. Result has 145 places, 293 transitions, 2370 flow [2023-08-29 17:31:22,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2247, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2370, PETRI_PLACES=145, PETRI_TRANSITIONS=293} [2023-08-29 17:31:22,738 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 89 predicate places. [2023-08-29 17:31:22,738 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 293 transitions, 2370 flow [2023-08-29 17:31:22,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 107.0) internal successors, (642), 6 states have internal predecessors, (642), 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 17:31:22,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:22,739 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:22,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:22,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:22,944 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:22,945 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:22,945 INFO L85 PathProgramCache]: Analyzing trace with hash 1142554823, now seen corresponding path program 1 times [2023-08-29 17:31:22,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:22,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202538469] [2023-08-29 17:31:22,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:22,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:23,268 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2023-08-29 17:31:23,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:23,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202538469] [2023-08-29 17:31:23,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202538469] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-29 17:31:23,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-29 17:31:23,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-29 17:31:23,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088899021] [2023-08-29 17:31:23,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-29 17:31:23,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-29 17:31:23,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:23,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-29 17:31:23,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-29 17:31:23,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 191 [2023-08-29 17:31:23,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 293 transitions, 2370 flow. Second operand has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 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 17:31:23,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:23,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 191 [2023-08-29 17:31:23,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:24,850 INFO L130 PetriNetUnfolder]: 3421/7652 cut-off events. [2023-08-29 17:31:24,850 INFO L131 PetriNetUnfolder]: For 32130/32315 co-relation queries the response was YES. [2023-08-29 17:31:24,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34592 conditions, 7652 events. 3421/7652 cut-off events. For 32130/32315 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 57241 event pairs, 770 based on Foata normal form. 71/7693 useless extension candidates. Maximal degree in co-relation 34507. Up to 5537 conditions per place. [2023-08-29 17:31:24,897 INFO L137 encePairwiseOnDemand]: 180/191 looper letters, 271 selfloop transitions, 84 changer transitions 0/406 dead transitions. [2023-08-29 17:31:24,897 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 406 transitions, 4302 flow [2023-08-29 17:31:24,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:24,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 679 transitions. [2023-08-29 17:31:24,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5924956369982548 [2023-08-29 17:31:24,900 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 679 transitions. [2023-08-29 17:31:24,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 679 transitions. [2023-08-29 17:31:24,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:24,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 679 transitions. [2023-08-29 17:31:24,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 113.16666666666667) internal successors, (679), 6 states have internal predecessors, (679), 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 17:31:24,904 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:24,904 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:24,904 INFO L175 Difference]: Start difference. First operand has 145 places, 293 transitions, 2370 flow. Second operand 6 states and 679 transitions. [2023-08-29 17:31:24,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 406 transitions, 4302 flow [2023-08-29 17:31:24,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 406 transitions, 4232 flow, removed 17 selfloop flow, removed 2 redundant places. [2023-08-29 17:31:24,973 INFO L231 Difference]: Finished difference. Result has 153 places, 332 transitions, 3238 flow [2023-08-29 17:31:24,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=2348, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3238, PETRI_PLACES=153, PETRI_TRANSITIONS=332} [2023-08-29 17:31:24,974 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 97 predicate places. [2023-08-29 17:31:24,974 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 332 transitions, 3238 flow [2023-08-29 17:31:24,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 101.0) internal successors, (606), 6 states have internal predecessors, (606), 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 17:31:24,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:24,975 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:24,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-29 17:31:24,975 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:24,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:24,976 INFO L85 PathProgramCache]: Analyzing trace with hash 725617908, now seen corresponding path program 1 times [2023-08-29 17:31:24,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:24,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1714417160] [2023-08-29 17:31:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:24,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:24,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:25,057 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:25,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:25,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1714417160] [2023-08-29 17:31:25,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1714417160] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:25,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [658563097] [2023-08-29 17:31:25,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:25,058 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:25,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:25,059 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:31:25,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-29 17:31:25,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:25,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-29 17:31:25,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:25,210 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:25,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:31:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:25,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [658563097] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:31:25,236 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:31:25,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2023-08-29 17:31:25,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325927750] [2023-08-29 17:31:25,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:31:25,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-29 17:31:25,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:25,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-29 17:31:25,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-29 17:31:25,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 191 [2023-08-29 17:31:25,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 332 transitions, 3238 flow. Second operand has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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 17:31:25,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:25,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 191 [2023-08-29 17:31:25,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:26,943 INFO L130 PetriNetUnfolder]: 3935/9640 cut-off events. [2023-08-29 17:31:26,943 INFO L131 PetriNetUnfolder]: For 45601/46175 co-relation queries the response was YES. [2023-08-29 17:31:27,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44713 conditions, 9640 events. 3935/9640 cut-off events. For 45601/46175 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 73377 event pairs, 419 based on Foata normal form. 131/9678 useless extension candidates. Maximal degree in co-relation 44625. Up to 2700 conditions per place. [2023-08-29 17:31:27,042 INFO L137 encePairwiseOnDemand]: 187/191 looper letters, 195 selfloop transitions, 23 changer transitions 0/455 dead transitions. [2023-08-29 17:31:27,043 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 455 transitions, 4903 flow [2023-08-29 17:31:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-29 17:31:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-29 17:31:27,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 751 transitions. [2023-08-29 17:31:27,045 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6553228621291448 [2023-08-29 17:31:27,045 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 751 transitions. [2023-08-29 17:31:27,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 751 transitions. [2023-08-29 17:31:27,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:27,046 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 751 transitions. [2023-08-29 17:31:27,048 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 125.16666666666667) internal successors, (751), 6 states have internal predecessors, (751), 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 17:31:27,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:27,050 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 191.0) internal successors, (1337), 7 states have internal predecessors, (1337), 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 17:31:27,050 INFO L175 Difference]: Start difference. First operand has 153 places, 332 transitions, 3238 flow. Second operand 6 states and 751 transitions. [2023-08-29 17:31:27,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 455 transitions, 4903 flow [2023-08-29 17:31:27,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 455 transitions, 4763 flow, removed 70 selfloop flow, removed 0 redundant places. [2023-08-29 17:31:27,212 INFO L231 Difference]: Finished difference. Result has 162 places, 341 transitions, 3272 flow [2023-08-29 17:31:27,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=3098, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=317, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3272, PETRI_PLACES=162, PETRI_TRANSITIONS=341} [2023-08-29 17:31:27,213 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 106 predicate places. [2023-08-29 17:31:27,213 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 341 transitions, 3272 flow [2023-08-29 17:31:27,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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 17:31:27,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:27,214 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:27,221 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:27,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-29 17:31:27,419 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:27,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:27,419 INFO L85 PathProgramCache]: Analyzing trace with hash -492140983, now seen corresponding path program 1 times [2023-08-29 17:31:27,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:27,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244669126] [2023-08-29 17:31:27,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:27,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:27,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:28,084 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:28,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:28,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244669126] [2023-08-29 17:31:28,085 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244669126] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:28,085 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655387591] [2023-08-29 17:31:28,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:28,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:28,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:28,089 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:31:28,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-29 17:31:28,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:28,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-29 17:31:28,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:28,535 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 11 treesize of output 7 [2023-08-29 17:31:28,572 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:31:28,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:31:28,672 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:31:28,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:28,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:28,756 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:28,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:28,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:31:28,792 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:28,792 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:31:29,696 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:29,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655387591] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:31:29,697 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:31:29,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-29 17:31:29,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655445060] [2023-08-29 17:31:29,697 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:31:29,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-29 17:31:29,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:29,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-29 17:31:29,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-08-29 17:31:32,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 191 [2023-08-29 17:31:32,586 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 341 transitions, 3272 flow. Second operand has 31 states, 31 states have (on average 87.54838709677419) internal successors, (2714), 31 states have internal predecessors, (2714), 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 17:31:32,586 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:32,586 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 191 [2023-08-29 17:31:32,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:35,469 INFO L130 PetriNetUnfolder]: 6142/13453 cut-off events. [2023-08-29 17:31:35,469 INFO L131 PetriNetUnfolder]: For 70420/70838 co-relation queries the response was YES. [2023-08-29 17:31:35,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68804 conditions, 13453 events. 6142/13453 cut-off events. For 70420/70838 co-relation queries the response was YES. Maximal size of possible extension queue 224. Compared 100765 event pairs, 631 based on Foata normal form. 63/13474 useless extension candidates. Maximal degree in co-relation 68712. Up to 4627 conditions per place. [2023-08-29 17:31:35,773 INFO L137 encePairwiseOnDemand]: 173/191 looper letters, 736 selfloop transitions, 133 changer transitions 4/924 dead transitions. [2023-08-29 17:31:35,774 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 924 transitions, 10577 flow [2023-08-29 17:31:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-29 17:31:35,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-29 17:31:35,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1699 transitions. [2023-08-29 17:31:35,781 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5232522328303049 [2023-08-29 17:31:35,781 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1699 transitions. [2023-08-29 17:31:35,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1699 transitions. [2023-08-29 17:31:35,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:35,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1699 transitions. [2023-08-29 17:31:35,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 99.94117647058823) internal successors, (1699), 17 states have internal predecessors, (1699), 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 17:31:35,792 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 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 17:31:35,800 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 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 17:31:35,800 INFO L175 Difference]: Start difference. First operand has 162 places, 341 transitions, 3272 flow. Second operand 17 states and 1699 transitions. [2023-08-29 17:31:35,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 924 transitions, 10577 flow [2023-08-29 17:31:35,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 924 transitions, 10559 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:35,982 INFO L231 Difference]: Finished difference. Result has 189 places, 441 transitions, 5151 flow [2023-08-29 17:31:35,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=3262, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5151, PETRI_PLACES=189, PETRI_TRANSITIONS=441} [2023-08-29 17:31:35,982 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 133 predicate places. [2023-08-29 17:31:35,983 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 441 transitions, 5151 flow [2023-08-29 17:31:35,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 87.54838709677419) internal successors, (2714), 31 states have internal predecessors, (2714), 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 17:31:35,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:35,984 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:35,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:36,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-29 17:31:36,185 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:36,320 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:36,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1866728547, now seen corresponding path program 1 times [2023-08-29 17:31:36,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:36,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939514547] [2023-08-29 17:31:36,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:36,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:37,051 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:37,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:37,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939514547] [2023-08-29 17:31:37,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939514547] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:37,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2122940977] [2023-08-29 17:31:37,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:37,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:37,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:37,053 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:31:37,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-29 17:31:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:37,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-29 17:31:37,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:37,495 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 11 treesize of output 7 [2023-08-29 17:31:37,528 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:31:37,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:31:37,654 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:31:37,702 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:37,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:37,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:37,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:37,705 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:31:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:37,739 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:31:38,517 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:38,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2122940977] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:31:38,518 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:31:38,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-29 17:31:38,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344144374] [2023-08-29 17:31:38,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:31:38,519 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-29 17:31:38,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:31:38,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-29 17:31:38,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=770, Unknown=0, NotChecked=0, Total=930 [2023-08-29 17:31:40,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 191 [2023-08-29 17:31:40,147 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 441 transitions, 5151 flow. Second operand has 31 states, 31 states have (on average 78.2258064516129) internal successors, (2425), 31 states have internal predecessors, (2425), 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 17:31:40,147 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:31:40,147 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 191 [2023-08-29 17:31:40,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:31:45,611 INFO L130 PetriNetUnfolder]: 9904/20673 cut-off events. [2023-08-29 17:31:45,611 INFO L131 PetriNetUnfolder]: For 127278/127575 co-relation queries the response was YES. [2023-08-29 17:31:45,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111399 conditions, 20673 events. 9904/20673 cut-off events. For 127278/127575 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 160851 event pairs, 1672 based on Foata normal form. 146/20799 useless extension candidates. Maximal degree in co-relation 111293. Up to 9654 conditions per place. [2023-08-29 17:31:45,837 INFO L137 encePairwiseOnDemand]: 162/191 looper letters, 1000 selfloop transitions, 171 changer transitions 14/1200 dead transitions. [2023-08-29 17:31:45,837 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 1200 transitions, 14520 flow [2023-08-29 17:31:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-29 17:31:45,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-29 17:31:45,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1639 transitions. [2023-08-29 17:31:45,841 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047736372035725 [2023-08-29 17:31:45,841 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1639 transitions. [2023-08-29 17:31:45,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1639 transitions. [2023-08-29 17:31:45,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:31:45,842 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1639 transitions. [2023-08-29 17:31:45,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 96.41176470588235) internal successors, (1639), 17 states have internal predecessors, (1639), 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 17:31:45,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 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 17:31:45,849 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 191.0) internal successors, (3438), 18 states have internal predecessors, (3438), 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 17:31:45,849 INFO L175 Difference]: Start difference. First operand has 189 places, 441 transitions, 5151 flow. Second operand 17 states and 1639 transitions. [2023-08-29 17:31:45,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 1200 transitions, 14520 flow [2023-08-29 17:31:46,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 1200 transitions, 14465 flow, removed 27 selfloop flow, removed 1 redundant places. [2023-08-29 17:31:46,262 INFO L231 Difference]: Finished difference. Result has 214 places, 578 transitions, 7629 flow [2023-08-29 17:31:46,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=5124, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7629, PETRI_PLACES=214, PETRI_TRANSITIONS=578} [2023-08-29 17:31:46,263 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 158 predicate places. [2023-08-29 17:31:46,263 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 578 transitions, 7629 flow [2023-08-29 17:31:46,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 78.2258064516129) internal successors, (2425), 31 states have internal predecessors, (2425), 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 17:31:46,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:31:46,264 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:31:46,268 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-29 17:31:46,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-29 17:31:46,465 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:31:46,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:31:46,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1267003643, now seen corresponding path program 2 times [2023-08-29 17:31:46,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:31:46,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013547589] [2023-08-29 17:31:46,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:31:46,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:31:46,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:31:47,576 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:47,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:31:47,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013547589] [2023-08-29 17:31:47,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013547589] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:31:47,577 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887658595] [2023-08-29 17:31:47,577 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 17:31:47,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:31:47,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:31:47,581 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:31:47,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-29 17:31:47,754 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 17:31:47,754 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:31:47,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-29 17:31:47,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:31:47,977 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 11 treesize of output 7 [2023-08-29 17:31:48,010 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:31:48,054 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:31:48,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:31:48,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,218 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,220 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,221 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:31:48,253 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,256 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:31:48,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,287 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,288 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:31:48,313 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:31:48,434 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,436 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:31:48,437 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:31:48,467 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:31:48,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:32:09,912 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:32:09,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887658595] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:32:09,912 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:32:09,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 31 [2023-08-29 17:32:09,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23807059] [2023-08-29 17:32:09,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:32:09,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 17:32:09,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:32:09,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 17:32:09,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=802, Unknown=6, NotChecked=0, Total=992 [2023-08-29 17:32:12,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:15,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:17,163 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:19,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:21,716 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:24,864 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:26,930 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:29,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:31,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:34,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:38,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:40,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:42,635 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:45,049 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:47,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:49,569 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:52,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:54,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:56,648 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:32:57,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 191 [2023-08-29 17:32:57,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 578 transitions, 7629 flow. Second operand has 32 states, 32 states have (on average 51.21875) internal successors, (1639), 32 states have internal predecessors, (1639), 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 17:32:57,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:32:57,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 191 [2023-08-29 17:32:57,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:33:08,086 INFO L130 PetriNetUnfolder]: 12533/25179 cut-off events. [2023-08-29 17:33:08,086 INFO L131 PetriNetUnfolder]: For 196818/196818 co-relation queries the response was YES. [2023-08-29 17:33:08,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146251 conditions, 25179 events. 12533/25179 cut-off events. For 196818/196818 co-relation queries the response was YES. Maximal size of possible extension queue 384. Compared 195881 event pairs, 2155 based on Foata normal form. 20/24939 useless extension candidates. Maximal degree in co-relation 146134. Up to 11313 conditions per place. [2023-08-29 17:33:08,394 INFO L137 encePairwiseOnDemand]: 173/191 looper letters, 1056 selfloop transitions, 243 changer transitions 2/1301 dead transitions. [2023-08-29 17:33:08,394 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 1301 transitions, 17862 flow [2023-08-29 17:33:08,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 17:33:08,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 17:33:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1096 transitions. [2023-08-29 17:33:08,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586387434554974 [2023-08-29 17:33:08,396 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1096 transitions. [2023-08-29 17:33:08,396 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1096 transitions. [2023-08-29 17:33:08,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:33:08,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1096 transitions. [2023-08-29 17:33:08,398 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 68.5) internal successors, (1096), 16 states have internal predecessors, (1096), 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 17:33:08,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 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 17:33:08,402 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 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 17:33:08,402 INFO L175 Difference]: Start difference. First operand has 214 places, 578 transitions, 7629 flow. Second operand 16 states and 1096 transitions. [2023-08-29 17:33:08,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 1301 transitions, 17862 flow [2023-08-29 17:33:09,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 1301 transitions, 17718 flow, removed 53 selfloop flow, removed 2 redundant places. [2023-08-29 17:33:09,503 INFO L231 Difference]: Finished difference. Result has 236 places, 691 transitions, 10485 flow [2023-08-29 17:33:09,504 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=7529, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=374, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10485, PETRI_PLACES=236, PETRI_TRANSITIONS=691} [2023-08-29 17:33:09,504 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 180 predicate places. [2023-08-29 17:33:09,504 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 691 transitions, 10485 flow [2023-08-29 17:33:09,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 51.21875) internal successors, (1639), 32 states have internal predecessors, (1639), 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 17:33:09,505 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:33:09,505 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:33:09,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-29 17:33:09,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-29 17:33:09,711 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:33:09,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:33:09,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1683454459, now seen corresponding path program 2 times [2023-08-29 17:33:09,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:33:09,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049457878] [2023-08-29 17:33:09,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:33:09,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:33:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:33:10,384 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:33:10,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:33:10,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049457878] [2023-08-29 17:33:10,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049457878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:33:10,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [178351486] [2023-08-29 17:33:10,384 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-29 17:33:10,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:33:10,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:33:10,385 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:33:10,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-29 17:33:10,534 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-29 17:33:10,534 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:33:10,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-29 17:33:10,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:33:10,800 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 11 treesize of output 7 [2023-08-29 17:33:10,838 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:33:10,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:33:10,945 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:33:11,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:11,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:11,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:11,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:33:11,057 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:33:11,087 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:33:11,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:33:24,945 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:33:24,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [178351486] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:33:24,945 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:33:24,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 30 [2023-08-29 17:33:24,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916226309] [2023-08-29 17:33:24,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:33:24,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2023-08-29 17:33:24,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:33:24,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2023-08-29 17:33:24,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=747, Unknown=6, NotChecked=0, Total=930 [2023-08-29 17:33:26,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:29,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:31,231 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:33,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:35,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:37,678 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:39,880 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:42,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:44,189 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:46,494 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:48,769 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:50,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:52,649 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:55,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:33:57,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:00,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:00,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 191 [2023-08-29 17:34:00,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 691 transitions, 10485 flow. Second operand has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 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 17:34:00,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:34:00,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 191 [2023-08-29 17:34:00,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:34:14,401 INFO L130 PetriNetUnfolder]: 16506/33147 cut-off events. [2023-08-29 17:34:14,401 INFO L131 PetriNetUnfolder]: For 295676/295676 co-relation queries the response was YES. [2023-08-29 17:34:14,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197333 conditions, 33147 events. 16506/33147 cut-off events. For 295676/295676 co-relation queries the response was YES. Maximal size of possible extension queue 494. Compared 271729 event pairs, 3306 based on Foata normal form. 106/32860 useless extension candidates. Maximal degree in co-relation 197206. Up to 11696 conditions per place. [2023-08-29 17:34:14,930 INFO L137 encePairwiseOnDemand]: 162/191 looper letters, 1194 selfloop transitions, 286 changer transitions 16/1496 dead transitions. [2023-08-29 17:34:14,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 1496 transitions, 21367 flow [2023-08-29 17:34:14,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-29 17:34:14,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-29 17:34:14,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1171 transitions. [2023-08-29 17:34:14,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831806282722513 [2023-08-29 17:34:14,932 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1171 transitions. [2023-08-29 17:34:14,932 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1171 transitions. [2023-08-29 17:34:14,933 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:34:14,933 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1171 transitions. [2023-08-29 17:34:14,935 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 73.1875) internal successors, (1171), 16 states have internal predecessors, (1171), 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 17:34:14,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 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 17:34:14,938 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 191.0) internal successors, (3247), 17 states have internal predecessors, (3247), 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 17:34:14,938 INFO L175 Difference]: Start difference. First operand has 236 places, 691 transitions, 10485 flow. Second operand 16 states and 1171 transitions. [2023-08-29 17:34:14,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 1496 transitions, 21367 flow [2023-08-29 17:34:17,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 1496 transitions, 21105 flow, removed 31 selfloop flow, removed 5 redundant places. [2023-08-29 17:34:17,353 INFO L231 Difference]: Finished difference. Result has 256 places, 841 transitions, 13777 flow [2023-08-29 17:34:17,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=10342, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=691, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=13777, PETRI_PLACES=256, PETRI_TRANSITIONS=841} [2023-08-29 17:34:17,354 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 200 predicate places. [2023-08-29 17:34:17,354 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 841 transitions, 13777 flow [2023-08-29 17:34:17,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 49.32258064516129) internal successors, (1529), 31 states have internal predecessors, (1529), 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 17:34:17,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:34:17,355 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:34:17,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-29 17:34:17,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-29 17:34:17,565 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:34:17,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:34:17,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1668215551, now seen corresponding path program 3 times [2023-08-29 17:34:17,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:34:17,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352868798] [2023-08-29 17:34:17,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:34:17,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:34:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:34:18,521 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:34:18,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:34:18,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352868798] [2023-08-29 17:34:18,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352868798] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:34:18,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44296352] [2023-08-29 17:34:18,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 17:34:18,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:34:18,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:34:18,523 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:34:18,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-29 17:34:18,672 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 17:34:18,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:34:18,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-29 17:34:18,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:34:18,917 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 11 treesize of output 7 [2023-08-29 17:34:18,947 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:34:18,987 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:34:19,028 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:34:19,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,133 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,135 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:34:19,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,153 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,154 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,155 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:34:19,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,184 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,186 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,187 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:34:19,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,210 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,218 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:34:19,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,269 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,270 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:34:19,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:34:19,303 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:34:19,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:34:45,500 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:34:45,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44296352] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:34:45,501 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:34:45,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 32 [2023-08-29 17:34:45,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192648277] [2023-08-29 17:34:45,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:34:45,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-08-29 17:34:45,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:34:45,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-08-29 17:34:45,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=869, Unknown=10, NotChecked=0, Total=1056 [2023-08-29 17:34:48,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:51,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:55,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:34:59,414 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:04,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:07,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:15,343 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:16,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:19,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:21,825 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:23,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:29,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:34,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:37,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:41,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:44,789 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:47,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:50,389 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:53,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:55,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:57,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:35:59,318 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:01,442 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:03,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:06,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:08,685 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:10,767 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:13,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:19,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:22,988 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:25,358 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:27,504 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:31,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:33,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:36,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:38,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:40,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:42,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:45,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:47,653 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:50,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:54,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:57,269 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:36:59,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:01,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:04,576 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:06,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.22s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:08,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:13,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:37:13,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 191 [2023-08-29 17:37:13,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 841 transitions, 13777 flow. Second operand has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 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 17:37:13,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:37:13,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 191 [2023-08-29 17:37:13,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:37:41,072 INFO L130 PetriNetUnfolder]: 24720/49674 cut-off events. [2023-08-29 17:37:41,072 INFO L131 PetriNetUnfolder]: For 520027/520027 co-relation queries the response was YES. [2023-08-29 17:37:41,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310681 conditions, 49674 events. 24720/49674 cut-off events. For 520027/520027 co-relation queries the response was YES. Maximal size of possible extension queue 595. Compared 404122 event pairs, 5255 based on Foata normal form. 65/49136 useless extension candidates. Maximal degree in co-relation 310544. Up to 25024 conditions per place. [2023-08-29 17:37:42,104 INFO L137 encePairwiseOnDemand]: 172/191 looper letters, 2092 selfloop transitions, 466 changer transitions 0/2558 dead transitions. [2023-08-29 17:37:42,104 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 2558 transitions, 38592 flow [2023-08-29 17:37:42,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-29 17:37:42,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-29 17:37:42,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2043 transitions. [2023-08-29 17:37:42,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36883914063910456 [2023-08-29 17:37:42,107 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2043 transitions. [2023-08-29 17:37:42,108 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2043 transitions. [2023-08-29 17:37:42,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:37:42,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2043 transitions. [2023-08-29 17:37:42,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 70.44827586206897) internal successors, (2043), 29 states have internal predecessors, (2043), 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 17:37:42,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 191.0) internal successors, (5730), 30 states have internal predecessors, (5730), 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 17:37:42,117 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 191.0) internal successors, (5730), 30 states have internal predecessors, (5730), 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 17:37:42,117 INFO L175 Difference]: Start difference. First operand has 256 places, 841 transitions, 13777 flow. Second operand 29 states and 2043 transitions. [2023-08-29 17:37:42,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 2558 transitions, 38592 flow [2023-08-29 17:37:46,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 2558 transitions, 38112 flow, removed 173 selfloop flow, removed 4 redundant places. [2023-08-29 17:37:46,501 INFO L231 Difference]: Finished difference. Result has 301 places, 1136 transitions, 20912 flow [2023-08-29 17:37:46,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=13542, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=841, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=196, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=20912, PETRI_PLACES=301, PETRI_TRANSITIONS=1136} [2023-08-29 17:37:46,502 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 245 predicate places. [2023-08-29 17:37:46,502 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 1136 transitions, 20912 flow [2023-08-29 17:37:46,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 51.121212121212125) internal successors, (1687), 33 states have internal predecessors, (1687), 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 17:37:46,503 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:37:46,503 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:37:46,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-29 17:37:46,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2023-08-29 17:37:46,709 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:37:46,709 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:37:46,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1715520455, now seen corresponding path program 3 times [2023-08-29 17:37:46,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:37:46,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368038116] [2023-08-29 17:37:46,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:37:46,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:37:46,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:37:47,230 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:47,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:37:47,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368038116] [2023-08-29 17:37:47,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368038116] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:37:47,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685670803] [2023-08-29 17:37:47,231 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-29 17:37:47,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:37:47,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:37:47,233 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:37:47,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-29 17:37:47,370 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-29 17:37:47,370 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:37:47,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-29 17:37:47,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:37:47,616 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 11 treesize of output 7 [2023-08-29 17:37:47,645 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:37:47,684 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:37:47,732 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:37:47,831 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:47,832 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:47,833 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:47,834 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:37:47,835 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:37:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:47,864 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:37:59,027 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:37:59,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685670803] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:37:59,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:37:59,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-29 17:37:59,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21223297] [2023-08-29 17:37:59,029 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:37:59,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 17:37:59,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:37:59,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 17:37:59,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=808, Unknown=2, NotChecked=0, Total=992 [2023-08-29 17:38:01,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:03,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:05,540 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:07,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:09,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:10,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:13,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:15,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:17,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:20,047 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:22,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:24,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:26,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:28,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:30,178 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:32,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:33,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:36,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:38,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:40,307 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:42,191 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:44,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:48,374 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:50,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:52,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:56,104 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:38:56,138 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 191 [2023-08-29 17:38:56,139 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 1136 transitions, 20912 flow. Second operand has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 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 17:38:56,139 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:38:56,139 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 191 [2023-08-29 17:38:56,139 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:39:29,111 INFO L130 PetriNetUnfolder]: 38233/76777 cut-off events. [2023-08-29 17:39:29,111 INFO L131 PetriNetUnfolder]: For 868991/868991 co-relation queries the response was YES. [2023-08-29 17:39:30,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499550 conditions, 76777 events. 38233/76777 cut-off events. For 868991/868991 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 685724 event pairs, 7576 based on Foata normal form. 108/75742 useless extension candidates. Maximal degree in co-relation 499392. Up to 26145 conditions per place. [2023-08-29 17:39:31,157 INFO L137 encePairwiseOnDemand]: 161/191 looper letters, 2947 selfloop transitions, 839 changer transitions 34/3820 dead transitions. [2023-08-29 17:39:31,157 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 3820 transitions, 60032 flow [2023-08-29 17:39:31,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2023-08-29 17:39:31,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2023-08-29 17:39:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 2530 transitions. [2023-08-29 17:39:31,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4013961605584642 [2023-08-29 17:39:31,161 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 2530 transitions. [2023-08-29 17:39:31,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 2530 transitions. [2023-08-29 17:39:31,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:39:31,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 2530 transitions. [2023-08-29 17:39:31,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 76.66666666666667) internal successors, (2530), 33 states have internal predecessors, (2530), 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 17:39:31,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 191.0) internal successors, (6494), 34 states have internal predecessors, (6494), 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 17:39:31,172 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 191.0) internal successors, (6494), 34 states have internal predecessors, (6494), 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 17:39:31,172 INFO L175 Difference]: Start difference. First operand has 301 places, 1136 transitions, 20912 flow. Second operand 33 states and 2530 transitions. [2023-08-29 17:39:31,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 3820 transitions, 60032 flow [2023-08-29 17:39:43,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 3820 transitions, 59151 flow, removed 440 selfloop flow, removed 1 redundant places. [2023-08-29 17:39:43,981 INFO L231 Difference]: Finished difference. Result has 355 places, 1804 transitions, 35348 flow [2023-08-29 17:39:43,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=20365, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=253, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=647, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=35348, PETRI_PLACES=355, PETRI_TRANSITIONS=1804} [2023-08-29 17:39:43,983 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 299 predicate places. [2023-08-29 17:39:43,983 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 1804 transitions, 35348 flow [2023-08-29 17:39:43,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 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 17:39:43,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:39:43,984 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:39:43,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-29 17:39:44,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:39:44,190 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:39:44,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:39:44,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2095055811, now seen corresponding path program 4 times [2023-08-29 17:39:44,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:39:44,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726658467] [2023-08-29 17:39:44,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:39:44,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:39:44,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:39:45,073 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:39:45,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:39:45,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726658467] [2023-08-29 17:39:45,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726658467] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:39:45,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [290282017] [2023-08-29 17:39:45,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 17:39:45,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:39:45,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:39:45,077 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:39:45,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-29 17:39:45,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 17:39:45,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:39:45,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-29 17:39:45,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:39:45,645 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 11 treesize of output 7 [2023-08-29 17:39:45,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:39:45,715 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:39:45,754 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:39:45,859 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,860 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,861 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:39:45,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,883 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,884 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,884 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:39:45,904 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,905 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,907 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,907 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:39:45,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,929 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:45,930 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 42 treesize of output 50 [2023-08-29 17:39:46,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,056 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,059 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,061 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,062 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,063 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:39:46,067 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 7 select indices, 7 select index equivalence classes, 28 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 84 [2023-08-29 17:39:54,127 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:39:54,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:40:13,906 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:40:13,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [290282017] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:40:13,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:40:13,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13, 15] total 37 [2023-08-29 17:40:13,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935506070] [2023-08-29 17:40:13,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:40:13,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-08-29 17:40:13,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:40:13,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-08-29 17:40:13,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=222, Invalid=1176, Unknown=8, NotChecked=0, Total=1406 [2023-08-29 17:40:16,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:19,123 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:21,594 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:23,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:26,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:28,711 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:30,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:40:34,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:36,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:38,950 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:40,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:42,799 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:44,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:47,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:49,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:51,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:55,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:40:59,766 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:41:01,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:04,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:07,316 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:09,747 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:41:12,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:14,821 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:41:18,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:41:20,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:22,393 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:25,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:27,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:41:29,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:41:31,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:33,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:33,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 48 out of 191 [2023-08-29 17:41:33,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 1804 transitions, 35348 flow. Second operand has 38 states, 38 states have (on average 50.71052631578947) internal successors, (1927), 38 states have internal predecessors, (1927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-29 17:41:33,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:41:33,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 48 of 191 [2023-08-29 17:41:33,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-29 17:41:43,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:45,281 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:47,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:49,908 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:51,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:57,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:41:59,517 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:42:02,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:42:06,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:42:08,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:42:11,897 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-08-29 17:43:03,864 INFO L130 PetriNetUnfolder]: 47797/96004 cut-off events. [2023-08-29 17:43:03,864 INFO L131 PetriNetUnfolder]: For 1466655/1466655 co-relation queries the response was YES. [2023-08-29 17:43:06,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683618 conditions, 96004 events. 47797/96004 cut-off events. For 1466655/1466655 co-relation queries the response was YES. Maximal size of possible extension queue 1059. Compared 874211 event pairs, 10284 based on Foata normal form. 65/94716 useless extension candidates. Maximal degree in co-relation 683436. Up to 34788 conditions per place. [2023-08-29 17:43:06,876 INFO L137 encePairwiseOnDemand]: 171/191 looper letters, 3107 selfloop transitions, 965 changer transitions 2/4074 dead transitions. [2023-08-29 17:43:06,876 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 4074 transitions, 77180 flow [2023-08-29 17:43:06,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-08-29 17:43:06,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-08-29 17:43:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 2223 transitions. [2023-08-29 17:43:06,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3637107329842932 [2023-08-29 17:43:06,879 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 2223 transitions. [2023-08-29 17:43:06,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 2223 transitions. [2023-08-29 17:43:06,880 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-29 17:43:06,880 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 2223 transitions. [2023-08-29 17:43:06,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 69.46875) internal successors, (2223), 32 states have internal predecessors, (2223), 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 17:43:06,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 191.0) internal successors, (6303), 33 states have internal predecessors, (6303), 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 17:43:06,886 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 191.0) internal successors, (6303), 33 states have internal predecessors, (6303), 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 17:43:06,887 INFO L175 Difference]: Start difference. First operand has 355 places, 1804 transitions, 35348 flow. Second operand 32 states and 2223 transitions. [2023-08-29 17:43:06,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 4074 transitions, 77180 flow [2023-08-29 17:43:28,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 381 places, 4074 transitions, 75734 flow, removed 388 selfloop flow, removed 5 redundant places. [2023-08-29 17:43:28,882 INFO L231 Difference]: Finished difference. Result has 403 places, 2284 transitions, 49484 flow [2023-08-29 17:43:28,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=34561, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1804, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=510, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=49484, PETRI_PLACES=403, PETRI_TRANSITIONS=2284} [2023-08-29 17:43:28,884 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 347 predicate places. [2023-08-29 17:43:28,884 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 2284 transitions, 49484 flow [2023-08-29 17:43:28,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 50.71052631578947) internal successors, (1927), 38 states have internal predecessors, (1927), 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 17:43:28,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-29 17:43:28,885 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-29 17:43:28,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-29 17:43:29,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:43:29,085 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting t_funErr1ASSERT_VIOLATIONDATA_RACE === [ULTIMATE.startErr2ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr0ASSERT_VIOLATIONDATA_RACE, ULTIMATE.startErr3ASSERT_VIOLATIONDATA_RACE (and 6 more)] === [2023-08-29 17:43:29,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-29 17:43:29,086 INFO L85 PathProgramCache]: Analyzing trace with hash -2019197861, now seen corresponding path program 4 times [2023-08-29 17:43:29,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-29 17:43:29,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188700736] [2023-08-29 17:43:29,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-29 17:43:29,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-29 17:43:29,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-29 17:43:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:43:29,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-29 17:43:29,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188700736] [2023-08-29 17:43:29,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188700736] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-29 17:43:29,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905796537] [2023-08-29 17:43:29,581 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-29 17:43:29,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-29 17:43:29,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-29 17:43:29,582 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-29 17:43:29,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-29 17:43:29,883 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-29 17:43:29,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-29 17:43:29,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 46 conjunts are in the unsatisfiable core [2023-08-29 17:43:29,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-29 17:43:30,132 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 11 treesize of output 7 [2023-08-29 17:43:30,164 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2023-08-29 17:43:30,199 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 28 [2023-08-29 17:43:30,244 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 38 [2023-08-29 17:43:30,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:30,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:30,348 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:30,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-29 17:43:30,349 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 48 [2023-08-29 17:43:30,378 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:43:30,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-29 17:43:42,177 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2023-08-29 17:43:42,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905796537] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-29 17:43:42,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-29 17:43:42,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2023-08-29 17:43:42,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789235496] [2023-08-29 17:43:42,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-29 17:43:42,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-29 17:43:42,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-29 17:43:42,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-29 17:43:42,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=174, Invalid=814, Unknown=4, NotChecked=0, Total=992 [2023-08-29 17:43:44,219 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:46,258 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:47,882 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:49,998 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:51,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:54,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:57,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:43:59,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:44:01,926 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:44:04,033 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:44:06,670 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:44:08,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:44:12,773 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:44:14,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:44:17,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:44:19,285 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:44:20,467 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:44:22,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:44:24,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-29 17:44:24,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 191 [2023-08-29 17:44:24,782 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 2284 transitions, 49484 flow. Second operand has 32 states, 32 states have (on average 49.21875) internal successors, (1575), 32 states have internal predecessors, (1575), 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 17:44:24,782 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-29 17:44:24,782 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 191 [2023-08-29 17:44:24,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15