./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-poker-hand-subst.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --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-subst.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 088f6c2624c9ef470b1e5d5938ff0e2c2948b61c2ac98da6e426747245a7aaad --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations BEFORE --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-09-01 12:13:44,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-09-01 12:13:44,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-09-01 12:13:44,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-09-01 12:13:44,308 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-09-01 12:13:44,311 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-09-01 12:13:44,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-09-01 12:13:44,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-09-01 12:13:44,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-09-01 12:13:44,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-09-01 12:13:44,323 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-09-01 12:13:44,325 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-09-01 12:13:44,325 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-09-01 12:13:44,328 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-09-01 12:13:44,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-09-01 12:13:44,332 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-09-01 12:13:44,333 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-09-01 12:13:44,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-09-01 12:13:44,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-09-01 12:13:44,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-09-01 12:13:44,342 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-09-01 12:13:44,343 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-09-01 12:13:44,344 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-09-01 12:13:44,345 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-09-01 12:13:44,351 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-09-01 12:13:44,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-09-01 12:13:44,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-09-01 12:13:44,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-09-01 12:13:44,354 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-09-01 12:13:44,355 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-09-01 12:13:44,355 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-09-01 12:13:44,357 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-09-01 12:13:44,359 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-09-01 12:13:44,359 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-09-01 12:13:44,360 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-09-01 12:13:44,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-09-01 12:13:44,361 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-09-01 12:13:44,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-09-01 12:13:44,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-09-01 12:13:44,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-09-01 12:13:44,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-09-01 12:13:44,370 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-09-01 12:13:44,401 INFO L113 SettingsManager]: Loading preferences was successful [2023-09-01 12:13:44,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-09-01 12:13:44,403 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-09-01 12:13:44,403 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-09-01 12:13:44,404 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-09-01 12:13:44,404 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-09-01 12:13:44,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-09-01 12:13:44,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-09-01 12:13:44,405 INFO L138 SettingsManager]: * Use SBE=true [2023-09-01 12:13:44,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-09-01 12:13:44,406 INFO L138 SettingsManager]: * sizeof long=4 [2023-09-01 12:13:44,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-09-01 12:13:44,406 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-09-01 12:13:44,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-09-01 12:13:44,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-09-01 12:13:44,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-09-01 12:13:44,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-09-01 12:13:44,407 INFO L138 SettingsManager]: * sizeof long double=12 [2023-09-01 12:13:44,408 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-09-01 12:13:44,408 INFO L138 SettingsManager]: * Use constant arrays=true [2023-09-01 12:13:44,408 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-09-01 12:13:44,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-09-01 12:13:44,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-09-01 12:13:44,409 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-09-01 12:13:44,409 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:13:44,409 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-09-01 12:13:44,409 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-09-01 12:13:44,409 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-09-01 12:13:44,410 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-09-01 12:13:44,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-09-01 12:13:44,410 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-09-01 12:13:44,410 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-09-01 12:13:44,411 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-09-01 12:13:44,411 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-09-01 12:13:44,411 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-09-01 12:13:44,411 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 088f6c2624c9ef470b1e5d5938ff0e2c2948b61c2ac98da6e426747245a7aaad Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-09-01 12:13:44,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-09-01 12:13:44,737 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-09-01 12:13:44,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-09-01 12:13:44,740 INFO L271 PluginConnector]: Initializing CDTParser... [2023-09-01 12:13:44,741 INFO L275 PluginConnector]: CDTParser initialized [2023-09-01 12:13:44,742 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-subst.wvr.c [2023-09-01 12:13:46,004 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-09-01 12:13:46,238 INFO L351 CDTParser]: Found 1 translation units. [2023-09-01 12:13:46,238 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-subst.wvr.c [2023-09-01 12:13:46,246 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9363861fb/d6d27bcb13f84920a0581be58786b525/FLAG6d3576601 [2023-09-01 12:13:46,259 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9363861fb/d6d27bcb13f84920a0581be58786b525 [2023-09-01 12:13:46,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-09-01 12:13:46,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-09-01 12:13:46,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-09-01 12:13:46,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-09-01 12:13:46,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-09-01 12:13:46,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:13:46" (1/1) ... [2023-09-01 12:13:46,277 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@154cd4c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46, skipping insertion in model container [2023-09-01 12:13:46,277 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.09 12:13:46" (1/1) ... [2023-09-01 12:13:46,282 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-09-01 12:13:46,324 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-09-01 12:13:46,559 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-subst.wvr.c[19262,19275] [2023-09-01 12:13:46,567 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:13:46,575 INFO L203 MainTranslator]: Completed pre-run [2023-09-01 12:13:46,712 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-subst.wvr.c[19262,19275] [2023-09-01 12:13:46,714 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-09-01 12:13:46,722 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:13:46,726 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-09-01 12:13:46,732 INFO L208 MainTranslator]: Completed translation [2023-09-01 12:13:46,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46 WrapperNode [2023-09-01 12:13:46,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-09-01 12:13:46,734 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-09-01 12:13:46,735 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-09-01 12:13:46,735 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-09-01 12:13:46,741 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46" (1/1) ... [2023-09-01 12:13:46,768 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46" (1/1) ... [2023-09-01 12:13:46,866 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2365 [2023-09-01 12:13:46,866 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-09-01 12:13:46,867 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-09-01 12:13:46,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-09-01 12:13:46,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-09-01 12:13:46,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46" (1/1) ... [2023-09-01 12:13:46,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46" (1/1) ... [2023-09-01 12:13:46,890 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46" (1/1) ... [2023-09-01 12:13:46,891 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46" (1/1) ... [2023-09-01 12:13:46,956 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46" (1/1) ... [2023-09-01 12:13:46,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46" (1/1) ... [2023-09-01 12:13:46,999 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46" (1/1) ... [2023-09-01 12:13:47,007 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46" (1/1) ... [2023-09-01 12:13:47,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-09-01 12:13:47,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-09-01 12:13:47,031 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-09-01 12:13:47,031 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-09-01 12:13:47,032 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46" (1/1) ... [2023-09-01 12:13:47,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-09-01 12:13:47,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:13:47,062 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) [2023-09-01 12:13:47,091 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 [2023-09-01 12:13:47,105 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-09-01 12:13:47,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-09-01 12:13:47,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-09-01 12:13:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-09-01 12:13:47,107 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-09-01 12:13:47,107 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-09-01 12:13:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-09-01 12:13:47,108 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-09-01 12:13:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-09-01 12:13:47,108 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-09-01 12:13:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-09-01 12:13:47,108 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-09-01 12:13:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-09-01 12:13:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-09-01 12:13:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-09-01 12:13:47,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-09-01 12:13:47,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-09-01 12:13:47,112 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-09-01 12:13:47,320 INFO L236 CfgBuilder]: Building ICFG [2023-09-01 12:13:47,322 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-09-01 12:13:49,182 INFO L277 CfgBuilder]: Performing block encoding [2023-09-01 12:13:51,535 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-09-01 12:13:51,535 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-09-01 12:13:51,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:13:51 BoogieIcfgContainer [2023-09-01 12:13:51,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-09-01 12:13:51,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-09-01 12:13:51,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-09-01 12:13:51,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-09-01 12:13:51,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.09 12:13:46" (1/3) ... [2023-09-01 12:13:51,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c976d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:13:51, skipping insertion in model container [2023-09-01 12:13:51,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.09 12:13:46" (2/3) ... [2023-09-01 12:13:51,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c976d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.09 12:13:51, skipping insertion in model container [2023-09-01 12:13:51,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.09 12:13:51" (3/3) ... [2023-09-01 12:13:51,546 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-subst.wvr.c [2023-09-01 12:13:51,558 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-09-01 12:13:51,566 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-09-01 12:13:51,567 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-09-01 12:13:51,567 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-09-01 12:13:52,013 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-09-01 12:13:52,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 657 places, 726 transitions, 1476 flow [2023-09-01 12:13:52,353 INFO L130 PetriNetUnfolder]: 79/723 cut-off events. [2023-09-01 12:13:52,353 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:13:52,363 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 929 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. [2023-09-01 12:13:52,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 657 places, 726 transitions, 1476 flow [2023-09-01 12:13:52,376 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 644 places, 713 transitions, 1444 flow [2023-09-01 12:13:52,379 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-09-01 12:13:52,393 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 644 places, 713 transitions, 1444 flow [2023-09-01 12:13:52,396 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 644 places, 713 transitions, 1444 flow [2023-09-01 12:13:52,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 644 places, 713 transitions, 1444 flow [2023-09-01 12:13:52,595 INFO L130 PetriNetUnfolder]: 79/713 cut-off events. [2023-09-01 12:13:52,596 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:13:52,601 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 931 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. [2023-09-01 12:13:52,611 INFO L119 LiptonReduction]: Number of co-enabled transitions 22110 [2023-09-01 12:15:07,783 INFO L134 LiptonReduction]: Checked pairs total: 22441 [2023-09-01 12:15:07,783 INFO L136 LiptonReduction]: Total number of compositions: 850 [2023-09-01 12:15:07,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-09-01 12:15:07,801 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;@4fb88356, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-09-01 12:15:07,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-09-01 12:15:07,854 INFO L130 PetriNetUnfolder]: 24/57 cut-off events. [2023-09-01 12:15:07,854 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-09-01 12:15:07,854 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:07,855 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] [2023-09-01 12:15:07,855 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)] === [2023-09-01 12:15:07,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:07,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1826599295, now seen corresponding path program 1 times [2023-09-01 12:15:07,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:07,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035228169] [2023-09-01 12:15:07,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:07,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:08,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-09-01 12:15:08,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:08,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035228169] [2023-09-01 12:15:08,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035228169] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:08,644 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:08,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-09-01 12:15:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475576046] [2023-09-01 12:15:08,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:08,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 12:15:08,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:08,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 12:15:08,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 12:15:08,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 1576 [2023-09-01 12:15:08,902 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) [2023-09-01 12:15:08,902 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:08,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 1576 [2023-09-01 12:15:08,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:10,465 INFO L130 PetriNetUnfolder]: 873/1099 cut-off events. [2023-09-01 12:15:10,465 INFO L131 PetriNetUnfolder]: For 36/36 co-relation queries the response was YES. [2023-09-01 12:15:10,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 1099 events. 873/1099 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2622 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. [2023-09-01 12:15:10,475 INFO L137 encePairwiseOnDemand]: 1569/1576 looper letters, 55 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-09-01 12:15:10,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 61 transitions, 262 flow [2023-09-01 12:15:10,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 12:15:10,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 12:15:10,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1849 transitions. [2023-09-01 12:15:10,499 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39107445008460234 [2023-09-01 12:15:10,500 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1849 transitions. [2023-09-01 12:15:10,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1849 transitions. [2023-09-01 12:15:10,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:10,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1849 transitions. [2023-09-01 12:15:10,514 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) [2023-09-01 12:15:10,529 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1576.0) internal successors, (6304), 4 states have internal predecessors, (6304), 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) [2023-09-01 12:15:10,532 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1576.0) internal successors, (6304), 4 states have internal predecessors, (6304), 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) [2023-09-01 12:15:10,533 INFO L175 Difference]: Start difference. First operand has 44 places, 58 transitions, 134 flow. Second operand 3 states and 1849 transitions. [2023-09-01 12:15:10,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 61 transitions, 262 flow [2023-09-01 12:15:10,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 61 transitions, 250 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-09-01 12:15:10,542 INFO L231 Difference]: Finished difference. Result has 41 places, 61 transitions, 154 flow [2023-09-01 12:15:10,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1576, 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} [2023-09-01 12:15:10,547 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -3 predicate places. [2023-09-01 12:15:10,549 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 61 transitions, 154 flow [2023-09-01 12:15:10,551 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) [2023-09-01 12:15:10,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:10,553 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] [2023-09-01 12:15:10,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-09-01 12:15:10,554 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)] === [2023-09-01 12:15:10,562 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:10,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1639007761, now seen corresponding path program 1 times [2023-09-01 12:15:10,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:10,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425019370] [2023-09-01 12:15:10,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:10,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:10,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:10,918 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-09-01 12:15:10,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:10,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425019370] [2023-09-01 12:15:10,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425019370] provided 1 perfect and 0 imperfect interpolant sequences [2023-09-01 12:15:10,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-09-01 12:15:10,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-09-01 12:15:10,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990864389] [2023-09-01 12:15:10,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-09-01 12:15:10,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-09-01 12:15:10,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:10,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-09-01 12:15:10,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-09-01 12:15:11,098 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 595 out of 1576 [2023-09-01 12:15:11,100 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) [2023-09-01 12:15:11,100 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:11,100 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 595 of 1576 [2023-09-01 12:15:11,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:12,399 INFO L130 PetriNetUnfolder]: 873/1105 cut-off events. [2023-09-01 12:15:12,399 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 12:15:12,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2248 conditions, 1105 events. 873/1105 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2600 event pairs, 333 based on Foata normal form. 0/567 useless extension candidates. Maximal degree in co-relation 2217. Up to 1100 conditions per place. [2023-09-01 12:15:12,403 INFO L137 encePairwiseOnDemand]: 1563/1576 looper letters, 55 selfloop transitions, 12 changer transitions 0/67 dead transitions. [2023-09-01 12:15:12,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 67 transitions, 300 flow [2023-09-01 12:15:12,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-09-01 12:15:12,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-09-01 12:15:12,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1855 transitions. [2023-09-01 12:15:12,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923434856175973 [2023-09-01 12:15:12,410 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1855 transitions. [2023-09-01 12:15:12,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1855 transitions. [2023-09-01 12:15:12,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:12,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1855 transitions. [2023-09-01 12:15:12,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 618.3333333333334) internal successors, (1855), 3 states have internal predecessors, (1855), 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) [2023-09-01 12:15:12,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1576.0) internal successors, (6304), 4 states have internal predecessors, (6304), 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) [2023-09-01 12:15:12,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1576.0) internal successors, (6304), 4 states have internal predecessors, (6304), 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) [2023-09-01 12:15:12,427 INFO L175 Difference]: Start difference. First operand has 41 places, 61 transitions, 154 flow. Second operand 3 states and 1855 transitions. [2023-09-01 12:15:12,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 67 transitions, 300 flow [2023-09-01 12:15:12,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 67 transitions, 294 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 12:15:12,429 INFO L231 Difference]: Finished difference. Result has 43 places, 67 transitions, 210 flow [2023-09-01 12:15:12,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1576, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=43, PETRI_TRANSITIONS=67} [2023-09-01 12:15:12,430 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -1 predicate places. [2023-09-01 12:15:12,430 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 67 transitions, 210 flow [2023-09-01 12:15:12,431 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) [2023-09-01 12:15:12,431 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:12,431 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, 1, 1, 1] [2023-09-01 12:15:12,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-09-01 12:15:12,432 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)] === [2023-09-01 12:15:12,432 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:12,432 INFO L85 PathProgramCache]: Analyzing trace with hash 1803508463, now seen corresponding path program 1 times [2023-09-01 12:15:12,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:12,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844321199] [2023-09-01 12:15:12,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:12,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:12,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:12,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 12:15:12,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:12,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844321199] [2023-09-01 12:15:12,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844321199] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:15:12,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946655466] [2023-09-01 12:15:12,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:12,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:15:12,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:15:12,825 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) [2023-09-01 12:15:12,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-09-01 12:15:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:13,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 639 conjuncts, 5 conjunts are in the unsatisfiable core [2023-09-01 12:15:13,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:15:13,667 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 12:15:13,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:15:13,698 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-09-01 12:15:13,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946655466] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 12:15:13,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 12:15:13,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-09-01 12:15:13,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016685244] [2023-09-01 12:15:13,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 12:15:13,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-09-01 12:15:13,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:13,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-09-01 12:15:13,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-09-01 12:15:14,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 1576 [2023-09-01 12:15:14,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 67 transitions, 210 flow. Second operand has 8 states, 8 states have (on average 576.375) internal successors, (4611), 8 states have internal predecessors, (4611), 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) [2023-09-01 12:15:14,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:14,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 1576 [2023-09-01 12:15:14,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:15,581 INFO L130 PetriNetUnfolder]: 873/1132 cut-off events. [2023-09-01 12:15:15,581 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-09-01 12:15:15,582 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2340 conditions, 1132 events. 873/1132 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2600 event pairs, 333 based on Foata normal form. 9/607 useless extension candidates. Maximal degree in co-relation 2278. Up to 1097 conditions per place. [2023-09-01 12:15:15,586 INFO L137 encePairwiseOnDemand]: 1551/1576 looper letters, 46 selfloop transitions, 48 changer transitions 0/94 dead transitions. [2023-09-01 12:15:15,586 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 94 transitions, 482 flow [2023-09-01 12:15:15,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-09-01 12:15:15,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-09-01 12:15:15,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4689 transitions. [2023-09-01 12:15:15,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37190672588832485 [2023-09-01 12:15:15,599 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 4689 transitions. [2023-09-01 12:15:15,599 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 4689 transitions. [2023-09-01 12:15:15,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:15,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 4689 transitions. [2023-09-01 12:15:15,612 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 586.125) internal successors, (4689), 8 states have internal predecessors, (4689), 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) [2023-09-01 12:15:15,630 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1576.0) internal successors, (14184), 9 states have internal predecessors, (14184), 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) [2023-09-01 12:15:15,634 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1576.0) internal successors, (14184), 9 states have internal predecessors, (14184), 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) [2023-09-01 12:15:15,634 INFO L175 Difference]: Start difference. First operand has 43 places, 67 transitions, 210 flow. Second operand 8 states and 4689 transitions. [2023-09-01 12:15:15,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 94 transitions, 482 flow [2023-09-01 12:15:15,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 94 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-09-01 12:15:15,637 INFO L231 Difference]: Finished difference. Result has 50 places, 94 transitions, 428 flow [2023-09-01 12:15:15,638 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1576, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=428, PETRI_PLACES=50, PETRI_TRANSITIONS=94} [2023-09-01 12:15:15,638 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2023-09-01 12:15:15,639 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 94 transitions, 428 flow [2023-09-01 12:15:15,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 576.375) internal successors, (4611), 8 states have internal predecessors, (4611), 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) [2023-09-01 12:15:15,640 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:15,641 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] [2023-09-01 12:15:15,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-09-01 12:15:15,850 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 [2023-09-01 12:15:15,851 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)] === [2023-09-01 12:15:15,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:15,851 INFO L85 PathProgramCache]: Analyzing trace with hash -603980111, now seen corresponding path program 1 times [2023-09-01 12:15:15,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:15,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326926321] [2023-09-01 12:15:15,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:15,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-09-01 12:15:16,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:16,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326926321] [2023-09-01 12:15:16,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326926321] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:15:16,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462653448] [2023-09-01 12:15:16,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:16,491 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:15:16,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:15:16,492 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) [2023-09-01 12:15:16,495 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-09-01 12:15:17,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:17,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 882 conjuncts, 8 conjunts are in the unsatisfiable core [2023-09-01 12:15:17,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:15:17,446 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-09-01 12:15:17,446 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-09-01 12:15:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2023-09-01 12:15:17,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462653448] provided 0 perfect and 2 imperfect interpolant sequences [2023-09-01 12:15:17,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-09-01 12:15:17,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-09-01 12:15:17,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814894561] [2023-09-01 12:15:17,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-09-01 12:15:17,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-09-01 12:15:17,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-09-01 12:15:17,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-09-01 12:15:17,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=166, Unknown=0, NotChecked=0, Total=272 [2023-09-01 12:15:18,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 571 out of 1576 [2023-09-01 12:15:18,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 94 transitions, 428 flow. Second operand has 17 states, 17 states have (on average 574.2352941176471) internal successors, (9762), 17 states have internal predecessors, (9762), 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) [2023-09-01 12:15:18,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-09-01 12:15:18,532 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 571 of 1576 [2023-09-01 12:15:18,532 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-09-01 12:15:20,151 INFO L130 PetriNetUnfolder]: 873/1150 cut-off events. [2023-09-01 12:15:20,152 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-09-01 12:15:20,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2477 conditions, 1150 events. 873/1150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2620 event pairs, 333 based on Foata normal form. 11/627 useless extension candidates. Maximal degree in co-relation 2380. Up to 1097 conditions per place. [2023-09-01 12:15:20,156 INFO L137 encePairwiseOnDemand]: 1551/1576 looper letters, 46 selfloop transitions, 66 changer transitions 0/112 dead transitions. [2023-09-01 12:15:20,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 112 transitions, 754 flow [2023-09-01 12:15:20,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-09-01 12:15:20,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-09-01 12:15:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 9266 transitions. [2023-09-01 12:15:20,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3674651015228426 [2023-09-01 12:15:20,180 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 9266 transitions. [2023-09-01 12:15:20,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 9266 transitions. [2023-09-01 12:15:20,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-09-01 12:15:20,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 9266 transitions. [2023-09-01 12:15:20,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 579.125) internal successors, (9266), 16 states have internal predecessors, (9266), 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) [2023-09-01 12:15:20,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 1576.0) internal successors, (26792), 17 states have internal predecessors, (26792), 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) [2023-09-01 12:15:20,240 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 1576.0) internal successors, (26792), 17 states have internal predecessors, (26792), 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) [2023-09-01 12:15:20,240 INFO L175 Difference]: Start difference. First operand has 50 places, 94 transitions, 428 flow. Second operand 16 states and 9266 transitions. [2023-09-01 12:15:20,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 112 transitions, 754 flow [2023-09-01 12:15:20,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 112 transitions, 698 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-09-01 12:15:20,251 INFO L231 Difference]: Finished difference. Result has 67 places, 112 transitions, 670 flow [2023-09-01 12:15:20,251 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1576, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=670, PETRI_PLACES=67, PETRI_TRANSITIONS=112} [2023-09-01 12:15:20,252 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 23 predicate places. [2023-09-01 12:15:20,252 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 112 transitions, 670 flow [2023-09-01 12:15:20,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 574.2352941176471) internal successors, (9762), 17 states have internal predecessors, (9762), 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) [2023-09-01 12:15:20,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-09-01 12:15:20,256 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 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] [2023-09-01 12:15:20,271 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-09-01 12:15:20,465 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 [2023-09-01 12:15:20,466 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)] === [2023-09-01 12:15:20,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-09-01 12:15:20,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1437156929, now seen corresponding path program 2 times [2023-09-01 12:15:20,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-09-01 12:15:20,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997060073] [2023-09-01 12:15:20,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-09-01 12:15:20,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-09-01 12:15:20,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-09-01 12:15:21,150 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2023-09-01 12:15:21,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-09-01 12:15:21,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997060073] [2023-09-01 12:15:21,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997060073] provided 0 perfect and 1 imperfect interpolant sequences [2023-09-01 12:15:21,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884929667] [2023-09-01 12:15:21,151 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-09-01 12:15:21,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-09-01 12:15:21,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-09-01 12:15:21,153 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) [2023-09-01 12:15:21,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-09-01 12:15:21,996 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-09-01 12:15:21,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-09-01 12:15:22,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 19 conjunts are in the unsatisfiable core [2023-09-01 12:15:22,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-09-01 12:15:26,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:15:26,534 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:15:26,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:15:26,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-09-01 12:15:26,583 INFO L321 Elim1Store]: treesize reduction 132, result has 17.0 percent of original size [2023-09-01 12:15:26,584 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 17 case distinctions, treesize of input 446 treesize of output 411 [2023-09-01 12:15:26,783 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 18 [2023-09-01 12:15:27,069 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-09-01 12:15:27,070 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 14 [2023-09-01 12:15:27,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2023-09-01 12:17:21,349 WARN L222 SmtUtils]: Spent 1.79m on a formula simplification. DAG size of input: 245 DAG size of output: 219 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-09-01 12:24:34,328 WARN L222 SmtUtils]: Spent 7.15m on a formula simplification that was a NOOP. DAG size: 5900 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2023-09-01 12:24:34,330 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-09-01 12:24:34,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 47 select indices, 47 select index equivalence classes, 0 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 1081 case distinctions, treesize of input 3139 treesize of output 15957 Killed by 15