./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 16:55:50,291 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 16:55:50,294 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 16:55:50,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 16:55:50,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 16:55:50,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 16:55:50,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 16:55:50,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 16:55:50,344 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 16:55:50,348 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 16:55:50,349 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 16:55:50,351 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 16:55:50,352 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 16:55:50,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 16:55:50,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 16:55:50,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 16:55:50,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 16:55:50,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 16:55:50,362 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 16:55:50,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 16:55:50,377 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 16:55:50,378 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 16:55:50,379 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 16:55:50,380 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 16:55:50,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 16:55:50,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 16:55:50,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 16:55:50,389 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 16:55:50,390 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 16:55:50,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 16:55:50,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 16:55:50,392 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 16:55:50,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 16:55:50,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 16:55:50,395 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 16:55:50,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 16:55:50,396 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 16:55:50,396 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 16:55:50,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 16:55:50,397 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 16:55:50,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 16:55:50,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 16:55:50,432 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 16:55:50,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 16:55:50,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 16:55:50,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 16:55:50,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 16:55:50,435 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 16:55:50,435 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 16:55:50,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 16:55:50,436 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 16:55:50,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 16:55:50,437 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 16:55:50,437 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 16:55:50,437 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 16:55:50,437 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 16:55:50,438 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 16:55:50,438 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 16:55:50,438 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 16:55:50,438 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 16:55:50,438 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 16:55:50,439 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 16:55:50,439 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 16:55:50,439 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 16:55:50,439 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 16:55:50,440 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 16:55:50,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:55:50,440 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 16:55:50,440 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 16:55:50,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 16:55:50,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 16:55:50,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 16:55:50,441 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 16:55:50,441 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 16:55:50,442 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 16:55:50,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 16:55:50,442 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 16:55:50,443 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e02ca79ae11b312cb156178ccd52c5da7b51884a938996d16b5a625457869bce Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 16:55:50,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 16:55:50,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 16:55:50,790 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 16:55:50,791 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 16:55:50,791 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 16:55:50,793 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-30 16:55:51,925 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 16:55:52,180 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 16:55:52,181 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-30 16:55:52,192 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd1679669/d815e1da5d664b9e81d634a8f401c62c/FLAG0df18cada [2023-08-30 16:55:52,513 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bd1679669/d815e1da5d664b9e81d634a8f401c62c [2023-08-30 16:55:52,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 16:55:52,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 16:55:52,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 16:55:52,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 16:55:52,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 16:55:52,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:55:52" (1/1) ... [2023-08-30 16:55:52,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39ece478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52, skipping insertion in model container [2023-08-30 16:55:52,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 04:55:52" (1/1) ... [2023-08-30 16:55:52,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 16:55:52,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 16:55:52,698 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-30 16:55:52,879 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:55:52,891 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 16:55:52,906 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-08-30 16:55:52,940 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 16:55:52,986 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:55:52,986 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 16:55:52,992 INFO L208 MainTranslator]: Completed translation [2023-08-30 16:55:52,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52 WrapperNode [2023-08-30 16:55:52,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 16:55:52,993 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 16:55:52,994 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 16:55:52,994 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 16:55:53,000 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52" (1/1) ... [2023-08-30 16:55:53,045 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52" (1/1) ... [2023-08-30 16:55:53,065 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-08-30 16:55:53,066 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 16:55:53,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 16:55:53,067 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 16:55:53,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 16:55:53,074 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52" (1/1) ... [2023-08-30 16:55:53,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52" (1/1) ... [2023-08-30 16:55:53,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52" (1/1) ... [2023-08-30 16:55:53,094 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52" (1/1) ... [2023-08-30 16:55:53,098 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52" (1/1) ... [2023-08-30 16:55:53,100 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52" (1/1) ... [2023-08-30 16:55:53,101 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52" (1/1) ... [2023-08-30 16:55:53,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52" (1/1) ... [2023-08-30 16:55:53,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 16:55:53,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 16:55:53,105 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 16:55:53,105 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 16:55:53,106 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52" (1/1) ... [2023-08-30 16:55:53,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 16:55:53,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 16:55:53,138 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) [2023-08-30 16:55:53,163 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 [2023-08-30 16:55:53,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 16:55:53,180 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 16:55:53,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 16:55:53,180 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 16:55:53,181 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 16:55:53,181 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-30 16:55:53,181 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-30 16:55:53,181 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-30 16:55:53,181 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-30 16:55:53,181 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-30 16:55:53,181 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-30 16:55:53,182 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 16:55:53,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 16:55:53,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 16:55:53,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 16:55:53,183 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 16:55:53,343 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 16:55:53,344 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 16:55:53,541 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 16:55:53,547 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 16:55:53,547 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 16:55:53,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:55:53 BoogieIcfgContainer [2023-08-30 16:55:53,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 16:55:53,558 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 16:55:53,558 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 16:55:53,561 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 16:55:53,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 04:55:52" (1/3) ... [2023-08-30 16:55:53,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3efe8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:55:53, skipping insertion in model container [2023-08-30 16:55:53,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 04:55:52" (2/3) ... [2023-08-30 16:55:53,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c3efe8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 04:55:53, skipping insertion in model container [2023-08-30 16:55:53,563 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:55:53" (3/3) ... [2023-08-30 16:55:53,564 INFO L112 eAbstractionObserver]: Analyzing ICFG safe009_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-30 16:55:53,571 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 16:55:53,579 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 16:55:53,580 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 16:55:53,580 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 16:55:53,657 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-30 16:55:53,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 91 places, 83 transitions, 181 flow [2023-08-30 16:55:53,747 INFO L130 PetriNetUnfolder]: 2/80 cut-off events. [2023-08-30 16:55:53,748 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:55:53,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 80 events. 2/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/77 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-08-30 16:55:53,752 INFO L82 GeneralOperation]: Start removeDead. Operand has 91 places, 83 transitions, 181 flow [2023-08-30 16:55:53,755 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 68 transitions, 145 flow [2023-08-30 16:55:53,758 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 16:55:53,766 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 68 transitions, 145 flow [2023-08-30 16:55:53,769 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 68 transitions, 145 flow [2023-08-30 16:55:53,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 68 transitions, 145 flow [2023-08-30 16:55:53,785 INFO L130 PetriNetUnfolder]: 1/68 cut-off events. [2023-08-30 16:55:53,785 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:55:53,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 68 events. 1/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 35 event pairs, 0 based on Foata normal form. 0/67 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-08-30 16:55:53,786 INFO L119 LiptonReduction]: Number of co-enabled transitions 988 [2023-08-30 16:55:55,656 INFO L134 LiptonReduction]: Checked pairs total: 1690 [2023-08-30 16:55:55,656 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-08-30 16:55:55,669 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 16:55:55,675 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;@41181167, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 16:55:55,675 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 16:55:55,681 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-08-30 16:55:55,681 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 16:55:55,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:55,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:55,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:55,687 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:55,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1582585200, now seen corresponding path program 1 times [2023-08-30 16:55:55,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:55,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486581167] [2023-08-30 16:55:55,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:55,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:55,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:56,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:56,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:56,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486581167] [2023-08-30 16:55:56,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486581167] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:56,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:56,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:55:56,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036550935] [2023-08-30 16:55:56,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:56,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:55:56,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:56,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:55:56,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:55:56,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 139 [2023-08-30 16:55:56,233 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2023-08-30 16:55:56,233 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:56,233 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 139 [2023-08-30 16:55:56,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:56,342 INFO L130 PetriNetUnfolder]: 283/491 cut-off events. [2023-08-30 16:55:56,343 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-08-30 16:55:56,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 491 events. 283/491 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2215 event pairs, 113 based on Foata normal form. 19/510 useless extension candidates. Maximal degree in co-relation 1002. Up to 335 conditions per place. [2023-08-30 16:55:56,348 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 21 selfloop transitions, 5 changer transitions 0/27 dead transitions. [2023-08-30 16:55:56,349 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 27 transitions, 121 flow [2023-08-30 16:55:56,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:55:56,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:55:56,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 237 transitions. [2023-08-30 16:55:56,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683453237410072 [2023-08-30 16:55:56,360 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 237 transitions. [2023-08-30 16:55:56,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 237 transitions. [2023-08-30 16:55:56,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:56,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 237 transitions. [2023-08-30 16:55:56,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 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) [2023-08-30 16:55:56,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-08-30 16:55:56,370 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-08-30 16:55:56,372 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 237 transitions. [2023-08-30 16:55:56,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 27 transitions, 121 flow [2023-08-30 16:55:56,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-30 16:55:56,375 INFO L231 Difference]: Finished difference. Result has 26 places, 19 transitions, 67 flow [2023-08-30 16:55:56,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=26, PETRI_TRANSITIONS=19} [2023-08-30 16:55:56,379 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-08-30 16:55:56,380 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 19 transitions, 67 flow [2023-08-30 16:55:56,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 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) [2023-08-30 16:55:56,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:56,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:56,381 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 16:55:56,381 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:56,382 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:56,382 INFO L85 PathProgramCache]: Analyzing trace with hash 1815500294, now seen corresponding path program 1 times [2023-08-30 16:55:56,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:56,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848204070] [2023-08-30 16:55:56,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:56,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:56,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:56,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:56,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848204070] [2023-08-30 16:55:56,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848204070] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:56,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:56,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:55:56,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121014564] [2023-08-30 16:55:56,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:56,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:55:56,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:56,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:55:56,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:55:56,567 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 139 [2023-08-30 16:55:56,568 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-30 16:55:56,568 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:56,568 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 139 [2023-08-30 16:55:56,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:56,674 INFO L130 PetriNetUnfolder]: 263/455 cut-off events. [2023-08-30 16:55:56,675 INFO L131 PetriNetUnfolder]: For 118/118 co-relation queries the response was YES. [2023-08-30 16:55:56,678 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1168 conditions, 455 events. 263/455 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1946 event pairs, 37 based on Foata normal form. 5/459 useless extension candidates. Maximal degree in co-relation 1157. Up to 261 conditions per place. [2023-08-30 16:55:56,682 INFO L137 encePairwiseOnDemand]: 134/139 looper letters, 27 selfloop transitions, 7 changer transitions 0/35 dead transitions. [2023-08-30 16:55:56,682 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 35 transitions, 186 flow [2023-08-30 16:55:56,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:55:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:55:56,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 312 transitions. [2023-08-30 16:55:56,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611510791366906 [2023-08-30 16:55:56,688 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 312 transitions. [2023-08-30 16:55:56,689 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 312 transitions. [2023-08-30 16:55:56,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:56,691 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 312 transitions. [2023-08-30 16:55:56,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.0) internal successors, (312), 4 states have internal predecessors, (312), 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) [2023-08-30 16:55:56,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-08-30 16:55:56,696 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-08-30 16:55:56,697 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 67 flow. Second operand 4 states and 312 transitions. [2023-08-30 16:55:56,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 35 transitions, 186 flow [2023-08-30 16:55:56,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 35 transitions, 178 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:55:56,702 INFO L231 Difference]: Finished difference. Result has 30 places, 23 transitions, 106 flow [2023-08-30 16:55:56,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=62, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=106, PETRI_PLACES=30, PETRI_TRANSITIONS=23} [2023-08-30 16:55:56,703 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 4 predicate places. [2023-08-30 16:55:56,703 INFO L495 AbstractCegarLoop]: Abstraction has has 30 places, 23 transitions, 106 flow [2023-08-30 16:55:56,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-30 16:55:56,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:56,704 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:56,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 16:55:56,705 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:56,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:56,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1815499581, now seen corresponding path program 1 times [2023-08-30 16:55:56,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:56,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189715757] [2023-08-30 16:55:56,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:56,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:56,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:56,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189715757] [2023-08-30 16:55:56,886 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189715757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:56,886 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:56,886 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:55:56,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082502308] [2023-08-30 16:55:56,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:56,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:55:56,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:56,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:55:56,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:55:56,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 139 [2023-08-30 16:55:56,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 106 flow. Second operand has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-30 16:55:56,900 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:56,900 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 139 [2023-08-30 16:55:56,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:56,972 INFO L130 PetriNetUnfolder]: 241/426 cut-off events. [2023-08-30 16:55:56,972 INFO L131 PetriNetUnfolder]: For 249/249 co-relation queries the response was YES. [2023-08-30 16:55:56,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1198 conditions, 426 events. 241/426 cut-off events. For 249/249 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1862 event pairs, 79 based on Foata normal form. 8/434 useless extension candidates. Maximal degree in co-relation 1184. Up to 245 conditions per place. [2023-08-30 16:55:56,975 INFO L137 encePairwiseOnDemand]: 134/139 looper letters, 33 selfloop transitions, 7 changer transitions 0/41 dead transitions. [2023-08-30 16:55:56,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 41 transitions, 251 flow [2023-08-30 16:55:56,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-30 16:55:56,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-30 16:55:56,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 313 transitions. [2023-08-30 16:55:56,977 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5629496402877698 [2023-08-30 16:55:56,977 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 313 transitions. [2023-08-30 16:55:56,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 313 transitions. [2023-08-30 16:55:56,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:56,978 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 313 transitions. [2023-08-30 16:55:56,979 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 78.25) internal successors, (313), 4 states have internal predecessors, (313), 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) [2023-08-30 16:55:56,980 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-08-30 16:55:56,980 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-08-30 16:55:56,980 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 106 flow. Second operand 4 states and 313 transitions. [2023-08-30 16:55:56,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 41 transitions, 251 flow [2023-08-30 16:55:56,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 41 transitions, 251 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 16:55:56,983 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 164 flow [2023-08-30 16:55:56,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-30 16:55:56,984 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-08-30 16:55:56,984 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 164 flow [2023-08-30 16:55:56,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.25) internal successors, (289), 4 states have internal predecessors, (289), 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) [2023-08-30 16:55:56,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:56,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:56,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 16:55:56,985 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:56,986 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:56,986 INFO L85 PathProgramCache]: Analyzing trace with hash 445932903, now seen corresponding path program 1 times [2023-08-30 16:55:56,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:56,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464166548] [2023-08-30 16:55:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:56,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:57,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:57,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:57,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:57,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464166548] [2023-08-30 16:55:57,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464166548] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:57,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:57,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:55:57,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631762977] [2023-08-30 16:55:57,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:57,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:55:57,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:57,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:55:57,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:55:57,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 139 [2023-08-30 16:55:57,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 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) [2023-08-30 16:55:57,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:57,140 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 139 [2023-08-30 16:55:57,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:57,240 INFO L130 PetriNetUnfolder]: 297/533 cut-off events. [2023-08-30 16:55:57,241 INFO L131 PetriNetUnfolder]: For 825/825 co-relation queries the response was YES. [2023-08-30 16:55:57,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1626 conditions, 533 events. 297/533 cut-off events. For 825/825 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2580 event pairs, 73 based on Foata normal form. 16/548 useless extension candidates. Maximal degree in co-relation 1607. Up to 218 conditions per place. [2023-08-30 16:55:57,243 INFO L137 encePairwiseOnDemand]: 134/139 looper letters, 27 selfloop transitions, 7 changer transitions 9/44 dead transitions. [2023-08-30 16:55:57,244 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 44 transitions, 309 flow [2023-08-30 16:55:57,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:55:57,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:55:57,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 387 transitions. [2023-08-30 16:55:57,248 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568345323741007 [2023-08-30 16:55:57,249 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 387 transitions. [2023-08-30 16:55:57,249 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 387 transitions. [2023-08-30 16:55:57,249 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:57,249 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 387 transitions. [2023-08-30 16:55:57,250 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.4) internal successors, (387), 5 states have internal predecessors, (387), 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) [2023-08-30 16:55:57,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-08-30 16:55:57,251 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-08-30 16:55:57,251 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 164 flow. Second operand 5 states and 387 transitions. [2023-08-30 16:55:57,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 44 transitions, 309 flow [2023-08-30 16:55:57,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 44 transitions, 304 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 16:55:57,255 INFO L231 Difference]: Finished difference. Result has 40 places, 23 transitions, 149 flow [2023-08-30 16:55:57,255 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=40, PETRI_TRANSITIONS=23} [2023-08-30 16:55:57,256 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2023-08-30 16:55:57,256 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 23 transitions, 149 flow [2023-08-30 16:55:57,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.0) internal successors, (360), 5 states have internal predecessors, (360), 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) [2023-08-30 16:55:57,256 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:57,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:57,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 16:55:57,257 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:57,257 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:57,258 INFO L85 PathProgramCache]: Analyzing trace with hash 445911513, now seen corresponding path program 2 times [2023-08-30 16:55:57,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:57,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488073672] [2023-08-30 16:55:57,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:57,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:57,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:57,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:57,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:57,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488073672] [2023-08-30 16:55:57,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488073672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:57,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:57,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-30 16:55:57,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365042416] [2023-08-30 16:55:57,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:57,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 16:55:57,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:57,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 16:55:57,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 16:55:57,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 139 [2023-08-30 16:55:57,382 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 23 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2023-08-30 16:55:57,383 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:57,383 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 139 [2023-08-30 16:55:57,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:57,438 INFO L130 PetriNetUnfolder]: 150/287 cut-off events. [2023-08-30 16:55:57,438 INFO L131 PetriNetUnfolder]: For 518/522 co-relation queries the response was YES. [2023-08-30 16:55:57,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 287 events. 150/287 cut-off events. For 518/522 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1216 event pairs, 80 based on Foata normal form. 4/287 useless extension candidates. Maximal degree in co-relation 954. Up to 233 conditions per place. [2023-08-30 16:55:57,440 INFO L137 encePairwiseOnDemand]: 136/139 looper letters, 22 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2023-08-30 16:55:57,440 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 29 transitions, 221 flow [2023-08-30 16:55:57,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 16:55:57,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 16:55:57,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 247 transitions. [2023-08-30 16:55:57,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592326139088729 [2023-08-30 16:55:57,442 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 247 transitions. [2023-08-30 16:55:57,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 247 transitions. [2023-08-30 16:55:57,442 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:57,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 247 transitions. [2023-08-30 16:55:57,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 82.33333333333333) internal successors, (247), 3 states have internal predecessors, (247), 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) [2023-08-30 16:55:57,444 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-08-30 16:55:57,445 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-08-30 16:55:57,445 INFO L175 Difference]: Start difference. First operand has 40 places, 23 transitions, 149 flow. Second operand 3 states and 247 transitions. [2023-08-30 16:55:57,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 29 transitions, 221 flow [2023-08-30 16:55:57,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 29 transitions, 190 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-08-30 16:55:57,449 INFO L231 Difference]: Finished difference. Result has 37 places, 23 transitions, 132 flow [2023-08-30 16:55:57,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=37, PETRI_TRANSITIONS=23} [2023-08-30 16:55:57,451 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-30 16:55:57,451 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 23 transitions, 132 flow [2023-08-30 16:55:57,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 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) [2023-08-30 16:55:57,452 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:57,452 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:57,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 16:55:57,452 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:57,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:57,453 INFO L85 PathProgramCache]: Analyzing trace with hash 938971327, now seen corresponding path program 1 times [2023-08-30 16:55:57,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:57,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441078215] [2023-08-30 16:55:57,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:57,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:57,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:57,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:57,616 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441078215] [2023-08-30 16:55:57,616 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441078215] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:57,616 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:57,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:55:57,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555182905] [2023-08-30 16:55:57,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:57,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:55:57,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:57,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:55:57,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:55:57,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 139 [2023-08-30 16:55:57,641 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 23 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 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) [2023-08-30 16:55:57,641 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:57,641 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 139 [2023-08-30 16:55:57,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:57,717 INFO L130 PetriNetUnfolder]: 235/410 cut-off events. [2023-08-30 16:55:57,717 INFO L131 PetriNetUnfolder]: For 495/495 co-relation queries the response was YES. [2023-08-30 16:55:57,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1240 conditions, 410 events. 235/410 cut-off events. For 495/495 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1592 event pairs, 63 based on Foata normal form. 24/434 useless extension candidates. Maximal degree in co-relation 1222. Up to 164 conditions per place. [2023-08-30 16:55:57,719 INFO L137 encePairwiseOnDemand]: 134/139 looper letters, 19 selfloop transitions, 4 changer transitions 16/39 dead transitions. [2023-08-30 16:55:57,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 39 transitions, 269 flow [2023-08-30 16:55:57,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:55:57,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:55:57,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 374 transitions. [2023-08-30 16:55:57,721 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5381294964028777 [2023-08-30 16:55:57,722 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 374 transitions. [2023-08-30 16:55:57,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 374 transitions. [2023-08-30 16:55:57,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:57,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 374 transitions. [2023-08-30 16:55:57,724 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.8) internal successors, (374), 5 states have internal predecessors, (374), 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) [2023-08-30 16:55:57,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-08-30 16:55:57,726 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-08-30 16:55:57,726 INFO L175 Difference]: Start difference. First operand has 37 places, 23 transitions, 132 flow. Second operand 5 states and 374 transitions. [2023-08-30 16:55:57,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 39 transitions, 269 flow [2023-08-30 16:55:57,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 261 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 16:55:57,728 INFO L231 Difference]: Finished difference. Result has 41 places, 16 transitions, 92 flow [2023-08-30 16:55:57,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=41, PETRI_TRANSITIONS=16} [2023-08-30 16:55:57,732 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-08-30 16:55:57,732 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 16 transitions, 92 flow [2023-08-30 16:55:57,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 70.2) internal successors, (351), 5 states have internal predecessors, (351), 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) [2023-08-30 16:55:57,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:57,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:57,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 16:55:57,734 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:57,734 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:57,734 INFO L85 PathProgramCache]: Analyzing trace with hash -975830644, now seen corresponding path program 1 times [2023-08-30 16:55:57,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:57,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204872931] [2023-08-30 16:55:57,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:57,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:57,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:57,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:57,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:57,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204872931] [2023-08-30 16:55:57,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204872931] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:57,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:57,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 16:55:57,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4781669] [2023-08-30 16:55:57,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:57,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-30 16:55:57,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:57,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-30 16:55:57,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-30 16:55:57,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 139 [2023-08-30 16:55:57,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 16 transitions, 92 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2023-08-30 16:55:57,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:57,948 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 139 [2023-08-30 16:55:57,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:57,998 INFO L130 PetriNetUnfolder]: 42/99 cut-off events. [2023-08-30 16:55:57,999 INFO L131 PetriNetUnfolder]: For 198/198 co-relation queries the response was YES. [2023-08-30 16:55:57,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324 conditions, 99 events. 42/99 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 301 event pairs, 10 based on Foata normal form. 4/102 useless extension candidates. Maximal degree in co-relation 304. Up to 58 conditions per place. [2023-08-30 16:55:58,000 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 15 selfloop transitions, 3 changer transitions 13/33 dead transitions. [2023-08-30 16:55:58,000 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 33 transitions, 227 flow [2023-08-30 16:55:58,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-30 16:55:58,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-30 16:55:58,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 393 transitions. [2023-08-30 16:55:58,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5654676258992806 [2023-08-30 16:55:58,002 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 393 transitions. [2023-08-30 16:55:58,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 393 transitions. [2023-08-30 16:55:58,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:58,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 393 transitions. [2023-08-30 16:55:58,003 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.6) internal successors, (393), 5 states have internal predecessors, (393), 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) [2023-08-30 16:55:58,005 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-08-30 16:55:58,005 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-08-30 16:55:58,005 INFO L175 Difference]: Start difference. First operand has 41 places, 16 transitions, 92 flow. Second operand 5 states and 393 transitions. [2023-08-30 16:55:58,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 33 transitions, 227 flow [2023-08-30 16:55:58,006 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 152 flow, removed 12 selfloop flow, removed 12 redundant places. [2023-08-30 16:55:58,007 INFO L231 Difference]: Finished difference. Result has 36 places, 18 transitions, 82 flow [2023-08-30 16:55:58,007 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=82, PETRI_PLACES=36, PETRI_TRANSITIONS=18} [2023-08-30 16:55:58,007 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2023-08-30 16:55:58,008 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 18 transitions, 82 flow [2023-08-30 16:55:58,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 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) [2023-08-30 16:55:58,008 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:58,008 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:58,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 16:55:58,009 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:58,009 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:58,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1454006676, now seen corresponding path program 1 times [2023-08-30 16:55:58,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:58,009 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354971263] [2023-08-30 16:55:58,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:58,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:58,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:58,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:58,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:58,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354971263] [2023-08-30 16:55:58,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354971263] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:58,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:58,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 16:55:58,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388642983] [2023-08-30 16:55:58,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:58,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-30 16:55:58,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:58,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-30 16:55:58,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-30 16:55:58,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 139 [2023-08-30 16:55:58,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 18 transitions, 82 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 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) [2023-08-30 16:55:58,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:58,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 139 [2023-08-30 16:55:58,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:58,234 INFO L130 PetriNetUnfolder]: 20/61 cut-off events. [2023-08-30 16:55:58,234 INFO L131 PetriNetUnfolder]: For 66/79 co-relation queries the response was YES. [2023-08-30 16:55:58,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 61 events. 20/61 cut-off events. For 66/79 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 155 event pairs, 1 based on Foata normal form. 5/66 useless extension candidates. Maximal degree in co-relation 211. Up to 38 conditions per place. [2023-08-30 16:55:58,235 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 14 selfloop transitions, 5 changer transitions 13/34 dead transitions. [2023-08-30 16:55:58,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 34 transitions, 220 flow [2023-08-30 16:55:58,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 16:55:58,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 16:55:58,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2023-08-30 16:55:58,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587529976019184 [2023-08-30 16:55:58,237 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2023-08-30 16:55:58,237 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2023-08-30 16:55:58,237 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:58,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2023-08-30 16:55:58,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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) [2023-08-30 16:55:58,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2023-08-30 16:55:58,240 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2023-08-30 16:55:58,240 INFO L175 Difference]: Start difference. First operand has 36 places, 18 transitions, 82 flow. Second operand 6 states and 466 transitions. [2023-08-30 16:55:58,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 34 transitions, 220 flow [2023-08-30 16:55:58,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 34 transitions, 215 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-30 16:55:58,242 INFO L231 Difference]: Finished difference. Result has 40 places, 18 transitions, 101 flow [2023-08-30 16:55:58,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=101, PETRI_PLACES=40, PETRI_TRANSITIONS=18} [2023-08-30 16:55:58,243 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 14 predicate places. [2023-08-30 16:55:58,243 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 18 transitions, 101 flow [2023-08-30 16:55:58,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 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) [2023-08-30 16:55:58,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 16:55:58,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:58,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 16:55:58,244 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 16:55:58,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 16:55:58,244 INFO L85 PathProgramCache]: Analyzing trace with hash -734790820, now seen corresponding path program 1 times [2023-08-30 16:55:58,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 16:55:58,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187616790] [2023-08-30 16:55:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 16:55:58,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 16:55:58,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 16:55:58,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 16:55:58,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 16:55:58,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187616790] [2023-08-30 16:55:58,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187616790] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 16:55:58,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 16:55:58,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 16:55:58,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657077754] [2023-08-30 16:55:58,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 16:55:58,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 16:55:58,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 16:55:58,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 16:55:58,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-30 16:55:58,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 139 [2023-08-30 16:55:58,406 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 18 transitions, 101 flow. Second operand has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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) [2023-08-30 16:55:58,406 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 16:55:58,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 139 [2023-08-30 16:55:58,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 16:55:58,443 INFO L130 PetriNetUnfolder]: 7/30 cut-off events. [2023-08-30 16:55:58,444 INFO L131 PetriNetUnfolder]: For 56/62 co-relation queries the response was YES. [2023-08-30 16:55:58,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 30 events. 7/30 cut-off events. For 56/62 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 5/35 useless extension candidates. Maximal degree in co-relation 116. Up to 15 conditions per place. [2023-08-30 16:55:58,444 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 0 selfloop transitions, 0 changer transitions 23/23 dead transitions. [2023-08-30 16:55:58,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 23 transitions, 158 flow [2023-08-30 16:55:58,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 16:55:58,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 16:55:58,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 526 transitions. [2023-08-30 16:55:58,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5405960945529291 [2023-08-30 16:55:58,447 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 526 transitions. [2023-08-30 16:55:58,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 526 transitions. [2023-08-30 16:55:58,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 16:55:58,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 526 transitions. [2023-08-30 16:55:58,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.14285714285714) internal successors, (526), 7 states have internal predecessors, (526), 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) [2023-08-30 16:55:58,451 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 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) [2023-08-30 16:55:58,451 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 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) [2023-08-30 16:55:58,451 INFO L175 Difference]: Start difference. First operand has 40 places, 18 transitions, 101 flow. Second operand 7 states and 526 transitions. [2023-08-30 16:55:58,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 23 transitions, 158 flow [2023-08-30 16:55:58,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 23 transitions, 128 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-30 16:55:58,452 INFO L231 Difference]: Finished difference. Result has 37 places, 0 transitions, 0 flow [2023-08-30 16:55:58,453 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=37, PETRI_TRANSITIONS=0} [2023-08-30 16:55:58,453 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 11 predicate places. [2023-08-30 16:55:58,453 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 0 transitions, 0 flow [2023-08-30 16:55:58,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.16666666666667) internal successors, (445), 6 states have internal predecessors, (445), 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) [2023-08-30 16:55:58,456 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 16:55:58,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 16:55:58,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 16:55:58,457 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 16:55:58,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 16:55:58,458 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 16:55:58,460 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 16:55:58,460 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 16:55:58,463 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 04:55:58 BasicIcfg [2023-08-30 16:55:58,463 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 16:55:58,464 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 16:55:58,464 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 16:55:58,464 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 16:55:58,464 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 04:55:53" (3/4) ... [2023-08-30 16:55:58,467 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 16:55:58,472 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P0 [2023-08-30 16:55:58,472 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P1 [2023-08-30 16:55:58,472 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure P2 [2023-08-30 16:55:58,476 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2023-08-30 16:55:58,476 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 16:55:58,476 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 16:55:58,477 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 16:55:58,503 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 16:55:58,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 16:55:58,504 INFO L158 Benchmark]: Toolchain (without parser) took 5987.77ms. Allocated memory was 77.6MB in the beginning and 146.8MB in the end (delta: 69.2MB). Free memory was 54.0MB in the beginning and 95.7MB in the end (delta: -41.7MB). Peak memory consumption was 29.3MB. Max. memory is 16.1GB. [2023-08-30 16:55:58,505 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory is still 34.6MB. There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 16:55:58,505 INFO L158 Benchmark]: CACSL2BoogieTranslator took 475.10ms. Allocated memory is still 77.6MB. Free memory was 54.0MB in the beginning and 55.8MB in the end (delta: -1.8MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. [2023-08-30 16:55:58,505 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.70ms. Allocated memory is still 77.6MB. Free memory was 55.8MB in the beginning and 54.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:55:58,505 INFO L158 Benchmark]: Boogie Preprocessor took 37.37ms. Allocated memory is still 77.6MB. Free memory was 53.7MB in the beginning and 52.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:55:58,506 INFO L158 Benchmark]: RCFGBuilder took 444.51ms. Allocated memory is still 77.6MB. Free memory was 52.3MB in the beginning and 39.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 16:55:58,506 INFO L158 Benchmark]: TraceAbstraction took 4905.45ms. Allocated memory was 77.6MB in the beginning and 146.8MB in the end (delta: 69.2MB). Free memory was 38.2MB in the beginning and 98.9MB in the end (delta: -60.7MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. [2023-08-30 16:55:58,506 INFO L158 Benchmark]: Witness Printer took 40.10ms. Allocated memory is still 146.8MB. Free memory was 98.9MB in the beginning and 95.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 16:55:58,508 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 56.6MB. Free memory is still 34.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 475.10ms. Allocated memory is still 77.6MB. Free memory was 54.0MB in the beginning and 55.8MB in the end (delta: -1.8MB). Peak memory consumption was 26.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.70ms. Allocated memory is still 77.6MB. Free memory was 55.8MB in the beginning and 54.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 37.37ms. Allocated memory is still 77.6MB. Free memory was 53.7MB in the beginning and 52.3MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 444.51ms. Allocated memory is still 77.6MB. Free memory was 52.3MB in the beginning and 39.0MB in the end (delta: 13.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 4905.45ms. Allocated memory was 77.6MB in the beginning and 146.8MB in the end (delta: 69.2MB). Free memory was 38.2MB in the beginning and 98.9MB in the end (delta: -60.7MB). Peak memory consumption was 11.5MB. Max. memory is 16.1GB. * Witness Printer took 40.10ms. Allocated memory is still 146.8MB. Free memory was 98.9MB in the beginning and 95.7MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.9s, 77 PlacesBefore, 26 PlacesAfterwards, 68 TransitionsBefore, 16 TransitionsAfterwards, 988 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1690 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1025, independent: 959, independent conditional: 0, independent unconditional: 959, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 534, independent: 514, independent conditional: 0, independent unconditional: 514, dependent: 20, dependent conditional: 0, dependent unconditional: 20, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1025, independent: 445, independent conditional: 0, independent unconditional: 445, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 534, unknown conditional: 0, unknown unconditional: 534] , Statistics on independence cache: Total cache size (in pairs): 35, Positive cache size: 27, Positive conditional cache size: 0, Positive unconditional cache size: 27, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 105 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 245 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 177 mSDsluCounter, 68 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31 mSDsCounter, 45 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 461 IncrementalHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 45 mSolverCounterUnsat, 37 mSDtfsCounter, 461 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=164occurred in iteration=3, InterpolantAutomatonStates: 42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 96 NumberOfCodeBlocks, 96 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 87 ConstructedInterpolants, 0 QuantifiedInterpolants, 371 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 16:55:58,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE