./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c --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/weaver/chl-poker-hand-trans.wvr.c -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 4e4f4f4fe5f72416e0e44275f74b26f9ea6749f134c13c768c7ed2450972cbc3 --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 19:12:14,356 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 19:12:14,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 19:12:14,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 19:12:14,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 19:12:14,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 19:12:14,387 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 19:12:14,389 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 19:12:14,391 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 19:12:14,392 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 19:12:14,393 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 19:12:14,394 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 19:12:14,394 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 19:12:14,395 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 19:12:14,396 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 19:12:14,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 19:12:14,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 19:12:14,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 19:12:14,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 19:12:14,410 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 19:12:14,412 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 19:12:14,417 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 19:12:14,419 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 19:12:14,423 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 19:12:14,427 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 19:12:14,428 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 19:12:14,432 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 19:12:14,433 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 19:12:14,434 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 19:12:14,434 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 19:12:14,434 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 19:12:14,435 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 19:12:14,435 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 19:12:14,436 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 19:12:14,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 19:12:14,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 19:12:14,437 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 19:12:14,437 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 19:12:14,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 19:12:14,439 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 19:12:14,439 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 19:12:14,440 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 19:12:14,464 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 19:12:14,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 19:12:14,466 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 19:12:14,466 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 19:12:14,467 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 19:12:14,467 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 19:12:14,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 19:12:14,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 19:12:14,469 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 19:12:14,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 19:12:14,470 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 19:12:14,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 19:12:14,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 19:12:14,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 19:12:14,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 19:12:14,471 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 19:12:14,471 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 19:12:14,471 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 19:12:14,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 19:12:14,472 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 19:12:14,472 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 19:12:14,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 19:12:14,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 19:12:14,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 19:12:14,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 19:12:14,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 19:12:14,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 19:12:14,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 19:12:14,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 19:12:14,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 19:12:14,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 19:12:14,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 19:12:14,474 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 19:12:14,475 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 19:12:14,475 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 19:12:14,475 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4e4f4f4fe5f72416e0e44275f74b26f9ea6749f134c13c768c7ed2450972cbc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 19:12:14,803 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 19:12:14,826 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 19:12:14,828 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 19:12:14,829 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 19:12:14,829 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 19:12:14,834 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c [2023-08-30 19:12:15,948 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 19:12:16,206 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 19:12:16,206 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c [2023-08-30 19:12:16,223 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/430bfb37f/f1ae408ca8094dbc9bf9f338693e59ca/FLAGa2d9afd79 [2023-08-30 19:12:16,244 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/430bfb37f/f1ae408ca8094dbc9bf9f338693e59ca [2023-08-30 19:12:16,246 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 19:12:16,247 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 19:12:16,251 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 19:12:16,251 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 19:12:16,254 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 19:12:16,255 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:16" (1/1) ... [2023-08-30 19:12:16,256 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e6e0c8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16, skipping insertion in model container [2023-08-30 19:12:16,256 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:12:16" (1/1) ... [2023-08-30 19:12:16,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 19:12:16,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 19:12:16,610 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c[18874,18887] [2023-08-30 19:12:16,617 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 19:12:16,625 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 19:12:16,682 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-trans.wvr.c[18874,18887] [2023-08-30 19:12:16,685 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 19:12:16,692 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 19:12:16,692 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 19:12:16,698 INFO L208 MainTranslator]: Completed translation [2023-08-30 19:12:16,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16 WrapperNode [2023-08-30 19:12:16,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 19:12:16,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 19:12:16,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 19:12:16,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 19:12:16,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16" (1/1) ... [2023-08-30 19:12:16,728 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16" (1/1) ... [2023-08-30 19:12:16,821 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2365 [2023-08-30 19:12:16,827 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 19:12:16,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 19:12:16,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 19:12:16,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 19:12:16,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16" (1/1) ... [2023-08-30 19:12:16,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16" (1/1) ... [2023-08-30 19:12:16,860 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16" (1/1) ... [2023-08-30 19:12:16,861 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16" (1/1) ... [2023-08-30 19:12:16,923 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16" (1/1) ... [2023-08-30 19:12:16,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16" (1/1) ... [2023-08-30 19:12:16,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16" (1/1) ... [2023-08-30 19:12:16,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16" (1/1) ... [2023-08-30 19:12:16,962 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 19:12:16,963 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 19:12:16,969 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 19:12:16,969 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 19:12:16,969 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16" (1/1) ... [2023-08-30 19:12:16,975 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 19:12:16,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:12:17,003 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 19:12:17,034 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 19:12:17,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 19:12:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 19:12:17,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 19:12:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 19:12:17,062 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 19:12:17,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 19:12:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 19:12:17,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 19:12:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 19:12:17,063 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 19:12:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 19:12:17,063 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 19:12:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 19:12:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-30 19:12:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 19:12:17,064 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 19:12:17,064 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 19:12:17,067 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 19:12:17,341 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 19:12:17,343 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 19:12:19,154 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 19:12:21,341 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 19:12:21,341 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-30 19:12:21,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:21 BoogieIcfgContainer [2023-08-30 19:12:21,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 19:12:21,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 19:12:21,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 19:12:21,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 19:12:21,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:12:16" (1/3) ... [2023-08-30 19:12:21,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc90dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:21, skipping insertion in model container [2023-08-30 19:12:21,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:12:16" (2/3) ... [2023-08-30 19:12:21,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bc90dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:12:21, skipping insertion in model container [2023-08-30 19:12:21,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:12:21" (3/3) ... [2023-08-30 19:12:21,354 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-trans.wvr.c [2023-08-30 19:12:21,363 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 19:12:21,371 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 19:12:21,372 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 19:12:21,372 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 19:12:21,748 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 19:12:21,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 657 places, 726 transitions, 1476 flow [2023-08-30 19:12:22,090 INFO L130 PetriNetUnfolder]: 79/723 cut-off events. [2023-08-30 19:12:22,092 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 19:12:22,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 736 conditions, 723 events. 79/723 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 934 event pairs, 0 based on Foata normal form. 0/643 useless extension candidates. Maximal degree in co-relation 642. Up to 7 conditions per place. [2023-08-30 19:12:22,099 INFO L82 GeneralOperation]: Start removeDead. Operand has 657 places, 726 transitions, 1476 flow [2023-08-30 19:12:22,107 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 644 places, 713 transitions, 1444 flow [2023-08-30 19:12:22,110 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 19:12:22,118 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 644 places, 713 transitions, 1444 flow [2023-08-30 19:12:22,120 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 644 places, 713 transitions, 1444 flow [2023-08-30 19:12:22,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 644 places, 713 transitions, 1444 flow [2023-08-30 19:12:22,251 INFO L130 PetriNetUnfolder]: 79/713 cut-off events. [2023-08-30 19:12:22,251 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 19:12:22,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 726 conditions, 713 events. 79/713 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 930 event pairs, 0 based on Foata normal form. 0/634 useless extension candidates. Maximal degree in co-relation 642. Up to 7 conditions per place. [2023-08-30 19:12:22,265 INFO L119 LiptonReduction]: Number of co-enabled transitions 22110 [2023-08-30 19:13:39,795 INFO L134 LiptonReduction]: Checked pairs total: 22962 [2023-08-30 19:13:39,795 INFO L136 LiptonReduction]: Total number of compositions: 836 [2023-08-30 19:13:39,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 19:13:39,814 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;@141987f8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 19:13:39,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 19:13:39,883 INFO L130 PetriNetUnfolder]: 24/57 cut-off events. [2023-08-30 19:13:39,884 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 19:13:39,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:13:39,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:13:39,886 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 19:13:39,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:13:39,893 INFO L85 PathProgramCache]: Analyzing trace with hash -411687634, now seen corresponding path program 1 times [2023-08-30 19:13:39,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:13:39,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940478784] [2023-08-30 19:13:39,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:13:39,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:13:40,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:13:40,721 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 19:13:40,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:13:40,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940478784] [2023-08-30 19:13:40,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940478784] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:13:40,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:13:40,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-30 19:13:40,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982492098] [2023-08-30 19:13:40,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:13:40,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 19:13:40,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:13:40,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 19:13:40,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 19:13:40,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 1562 [2023-08-30 19:13:40,962 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 58 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 604.3333333333334) internal successors, (1813), 3 states have internal predecessors, (1813), 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 19:13:40,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:13:40,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 1562 [2023-08-30 19:13:40,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:13:42,703 INFO L130 PetriNetUnfolder]: 873/1099 cut-off events. [2023-08-30 19:13:42,704 INFO L131 PetriNetUnfolder]: For 24/24 co-relation queries the response was YES. [2023-08-30 19:13:42,705 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 1099 events. 873/1099 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2607 event pairs, 333 based on Foata normal form. 0/559 useless extension candidates. Maximal degree in co-relation 1844. Up to 1097 conditions per place. [2023-08-30 19:13:42,710 INFO L137 encePairwiseOnDemand]: 1555/1562 looper letters, 55 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-08-30 19:13:42,710 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 262 flow [2023-08-30 19:13:42,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 19:13:42,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 19:13:42,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1849 transitions. [2023-08-30 19:13:42,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945795988049509 [2023-08-30 19:13:42,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1849 transitions. [2023-08-30 19:13:42,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1849 transitions. [2023-08-30 19:13:42,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:13:42,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1849 transitions. [2023-08-30 19:13:42,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 616.3333333333334) internal successors, (1849), 3 states have internal predecessors, (1849), 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 19:13:42,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1562.0) internal successors, (6248), 4 states have internal predecessors, (6248), 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 19:13:42,758 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1562.0) internal successors, (6248), 4 states have internal predecessors, (6248), 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 19:13:42,760 INFO L175 Difference]: Start difference. First operand has 44 places, 58 transitions, 134 flow. Second operand 3 states and 1849 transitions. [2023-08-30 19:13:42,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 262 flow [2023-08-30 19:13:42,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 250 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 19:13:42,765 INFO L231 Difference]: Finished difference. Result has 41 places, 61 transitions, 154 flow [2023-08-30 19:13:42,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1562, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=154, PETRI_PLACES=41, PETRI_TRANSITIONS=61} [2023-08-30 19:13:42,770 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-08-30 19:13:42,770 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 61 transitions, 154 flow [2023-08-30 19:13:42,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 604.3333333333334) internal successors, (1813), 3 states have internal predecessors, (1813), 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 19:13:42,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:13:42,772 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:13:42,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 19:13:42,772 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 19:13:42,773 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:13:42,773 INFO L85 PathProgramCache]: Analyzing trace with hash 2142957173, now seen corresponding path program 1 times [2023-08-30 19:13:42,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:13:42,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276292148] [2023-08-30 19:13:42,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:13:42,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:13:42,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:13:43,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-30 19:13:43,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:13:43,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276292148] [2023-08-30 19:13:43,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1276292148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:13:43,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:13:43,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 19:13:43,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370206484] [2023-08-30 19:13:43,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:13:43,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 19:13:43,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:13:43,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 19:13:43,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 19:13:43,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 1562 [2023-08-30 19:13:43,236 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 61 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 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 19:13:43,236 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:13:43,236 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 1562 [2023-08-30 19:13:43,236 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:13:44,546 INFO L130 PetriNetUnfolder]: 873/1102 cut-off events. [2023-08-30 19:13:44,546 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-08-30 19:13:44,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2242 conditions, 1102 events. 873/1102 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2580 event pairs, 333 based on Foata normal form. 0/564 useless extension candidates. Maximal degree in co-relation 2211. Up to 1100 conditions per place. [2023-08-30 19:13:44,551 INFO L137 encePairwiseOnDemand]: 1555/1562 looper letters, 58 selfloop transitions, 6 changer transitions 0/64 dead transitions. [2023-08-30 19:13:44,551 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 64 transitions, 288 flow [2023-08-30 19:13:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 19:13:44,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 19:13:44,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1849 transitions. [2023-08-30 19:13:44,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3945795988049509 [2023-08-30 19:13:44,557 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1849 transitions. [2023-08-30 19:13:44,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1849 transitions. [2023-08-30 19:13:44,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:13:44,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1849 transitions. [2023-08-30 19:13:44,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 616.3333333333334) internal successors, (1849), 3 states have internal predecessors, (1849), 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 19:13:44,571 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1562.0) internal successors, (6248), 4 states have internal predecessors, (6248), 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 19:13:44,574 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1562.0) internal successors, (6248), 4 states have internal predecessors, (6248), 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 19:13:44,574 INFO L175 Difference]: Start difference. First operand has 41 places, 61 transitions, 154 flow. Second operand 3 states and 1849 transitions. [2023-08-30 19:13:44,574 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 64 transitions, 288 flow [2023-08-30 19:13:44,575 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 64 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 19:13:44,576 INFO L231 Difference]: Finished difference. Result has 43 places, 64 transitions, 180 flow [2023-08-30 19:13:44,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1562, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=180, PETRI_PLACES=43, PETRI_TRANSITIONS=64} [2023-08-30 19:13:44,577 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2023-08-30 19:13:44,577 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 64 transitions, 180 flow [2023-08-30 19:13:44,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 605.3333333333334) internal successors, (1816), 3 states have internal predecessors, (1816), 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 19:13:44,579 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:13:44,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:13:44,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 19:13:44,579 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 19:13:44,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:13:44,580 INFO L85 PathProgramCache]: Analyzing trace with hash 634694811, now seen corresponding path program 1 times [2023-08-30 19:13:44,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:13:44,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847128127] [2023-08-30 19:13:44,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:13:44,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:13:44,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:13:45,028 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 19:13:45,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:13:45,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847128127] [2023-08-30 19:13:45,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847128127] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 19:13:45,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436433641] [2023-08-30 19:13:45,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:13:45,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:13:45,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:13:45,037 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 19:13:45,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-30 19:13:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:13:45,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-30 19:13:45,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:13:45,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 19:13:45,900 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 19:13:45,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-30 19:13:45,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436433641] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 19:13:45,950 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 19:13:45,950 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-30 19:13:45,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110871658] [2023-08-30 19:13:45,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 19:13:45,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:13:45,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:13:45,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:13:45,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:13:46,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 1562 [2023-08-30 19:13:46,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 64 transitions, 180 flow. Second operand has 8 states, 8 states have (on average 576.0) internal successors, (4608), 8 states have internal predecessors, (4608), 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 19:13:46,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:13:46,406 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 1562 [2023-08-30 19:13:46,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:13:47,929 INFO L130 PetriNetUnfolder]: 873/1132 cut-off events. [2023-08-30 19:13:47,929 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-30 19:13:47,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 1132 events. 873/1132 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2580 event pairs, 333 based on Foata normal form. 9/604 useless extension candidates. Maximal degree in co-relation 2268. Up to 1097 conditions per place. [2023-08-30 19:13:47,934 INFO L137 encePairwiseOnDemand]: 1537/1562 looper letters, 46 selfloop transitions, 48 changer transitions 0/94 dead transitions. [2023-08-30 19:13:47,935 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 94 transitions, 464 flow [2023-08-30 19:13:47,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 19:13:47,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 19:13:47,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4692 transitions. [2023-08-30 19:13:47,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37548015364916776 [2023-08-30 19:13:47,948 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 4692 transitions. [2023-08-30 19:13:47,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 4692 transitions. [2023-08-30 19:13:47,951 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:13:47,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 4692 transitions. [2023-08-30 19:13:47,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 586.5) internal successors, (4692), 8 states have internal predecessors, (4692), 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 19:13:47,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1562.0) internal successors, (14058), 9 states have internal predecessors, (14058), 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 19:13:47,989 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1562.0) internal successors, (14058), 9 states have internal predecessors, (14058), 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 19:13:47,989 INFO L175 Difference]: Start difference. First operand has 43 places, 64 transitions, 180 flow. Second operand 8 states and 4692 transitions. [2023-08-30 19:13:47,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 94 transitions, 464 flow [2023-08-30 19:13:47,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 94 transitions, 458 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-30 19:13:47,992 INFO L231 Difference]: Finished difference. Result has 51 places, 94 transitions, 442 flow [2023-08-30 19:13:47,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1562, PETRI_DIFFERENCE_MINUEND_FLOW=174, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=442, PETRI_PLACES=51, PETRI_TRANSITIONS=94} [2023-08-30 19:13:47,993 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2023-08-30 19:13:47,993 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 94 transitions, 442 flow [2023-08-30 19:13:48,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 576.0) internal successors, (4608), 8 states have internal predecessors, (4608), 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 19:13:48,027 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:13:48,027 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:13:48,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-30 19:13:48,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:13:48,228 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 19:13:48,228 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:13:48,228 INFO L85 PathProgramCache]: Analyzing trace with hash -795979998, now seen corresponding path program 1 times [2023-08-30 19:13:48,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:13:48,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564859288] [2023-08-30 19:13:48,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:13:48,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:13:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:13:48,874 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-08-30 19:13:48,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:13:48,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564859288] [2023-08-30 19:13:48,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564859288] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 19:13:48,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817002508] [2023-08-30 19:13:48,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:13:48,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:13:48,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:13:48,878 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 19:13:48,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-30 19:13:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:13:49,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-30 19:13:49,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:13:49,813 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-08-30 19:13:49,815 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-30 19:13:49,888 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-08-30 19:13:49,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817002508] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-30 19:13:49,889 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-30 19:13:49,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-30 19:13:49,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171433407] [2023-08-30 19:13:49,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-30 19:13:49,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-30 19:13:49,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:13:49,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-30 19:13:49,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=156, Unknown=0, NotChecked=0, Total=272 [2023-08-30 19:13:51,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 1562 [2023-08-30 19:13:51,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 94 transitions, 442 flow. Second operand has 17 states, 17 states have (on average 574.8235294117648) internal successors, (9772), 17 states have internal predecessors, (9772), 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 19:13:51,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:13:51,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 1562 [2023-08-30 19:13:51,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:13:52,451 INFO L130 PetriNetUnfolder]: 873/1165 cut-off events. [2023-08-30 19:13:52,451 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-30 19:13:52,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 1165 events. 873/1165 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2605 event pairs, 333 based on Foata normal form. 19/652 useless extension candidates. Maximal degree in co-relation 2434. Up to 1097 conditions per place. [2023-08-30 19:13:52,457 INFO L137 encePairwiseOnDemand]: 1537/1562 looper letters, 46 selfloop transitions, 81 changer transitions 0/127 dead transitions. [2023-08-30 19:13:52,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 127 transitions, 870 flow [2023-08-30 19:13:52,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-30 19:13:52,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-30 19:13:52,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 9867 transitions. [2023-08-30 19:13:52,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715824357912179 [2023-08-30 19:13:52,480 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 9867 transitions. [2023-08-30 19:13:52,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 9867 transitions. [2023-08-30 19:13:52,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:13:52,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 9867 transitions. [2023-08-30 19:13:52,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 580.4117647058823) internal successors, (9867), 17 states have internal predecessors, (9867), 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 19:13:52,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1562.0) internal successors, (28116), 18 states have internal predecessors, (28116), 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 19:13:52,538 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1562.0) internal successors, (28116), 18 states have internal predecessors, (28116), 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 19:13:52,538 INFO L175 Difference]: Start difference. First operand has 51 places, 94 transitions, 442 flow. Second operand 17 states and 9867 transitions. [2023-08-30 19:13:52,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 127 transitions, 870 flow [2023-08-30 19:13:52,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 127 transitions, 752 flow, removed 47 selfloop flow, removed 4 redundant places. [2023-08-30 19:13:52,544 INFO L231 Difference]: Finished difference. Result has 66 places, 127 transitions, 730 flow [2023-08-30 19:13:52,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1562, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=730, PETRI_PLACES=66, PETRI_TRANSITIONS=127} [2023-08-30 19:13:52,545 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2023-08-30 19:13:52,545 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 127 transitions, 730 flow [2023-08-30 19:13:52,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 574.8235294117648) internal successors, (9772), 17 states have internal predecessors, (9772), 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 19:13:52,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:13:52,548 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:13:52,566 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-30 19:13:52,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-30 19:13:52,764 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 19:13:52,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:13:52,764 INFO L85 PathProgramCache]: Analyzing trace with hash 228461301, now seen corresponding path program 2 times [2023-08-30 19:13:52,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:13:52,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373937712] [2023-08-30 19:13:52,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:13:52,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:13:52,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:13:53,797 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2023-08-30 19:13:53,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:13:53,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373937712] [2023-08-30 19:13:53,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373937712] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-30 19:13:53,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779813850] [2023-08-30 19:13:53,798 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-30 19:13:53,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-30 19:13:53,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:13:53,800 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-30 19:13:53,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-30 19:13:54,626 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-30 19:13:54,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-30 19:13:54,631 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-30 19:13:54,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-30 19:14:58,251 WARN L222 SmtUtils]: Spent 54.77s on a formula simplification. DAG size of input: 191 DAG size of output: 191 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-30 19:14:59,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 19:14:59,083 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 19:14:59,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 19:14:59,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 19:14:59,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 19:14:59,090 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-30 19:15:09,606 WARN L222 SmtUtils]: Spent 10.50s on a formula simplification. DAG size of input: 1726 DAG size of output: 1059 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-08-30 19:15:09,609 INFO L321 Elim1Store]: treesize reduction 1396, result has 59.5 percent of original size [2023-08-30 19:15:09,610 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 28 select indices, 28 select index equivalence classes, 6 disjoint index pairs (out of 378 index pairs), introduced 28 new quantified variables, introduced 400 case distinctions, treesize of input 1529 treesize of output 3336 Killed by 15