./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --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-symm.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 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:26:25,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:26:25,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:26:25,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:26:25,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:26:25,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:26:25,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:26:25,385 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:26:25,387 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:26:25,391 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:26:25,392 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:26:25,395 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:26:25,395 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:26:25,397 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:26:25,398 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:26:25,403 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:26:25,404 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:26:25,406 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:26:25,407 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:26:25,417 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:26:25,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:26:25,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:26:25,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:26:25,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:26:25,438 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:26:25,439 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:26:25,439 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:26:25,441 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:26:25,442 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:26:25,443 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:26:25,443 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:26:25,444 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:26:25,446 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:26:25,447 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:26:25,448 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:26:25,448 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:26:25,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:26:25,449 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:26:25,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:26:25,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:26:25,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:26:25,452 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:26:25,486 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:26:25,486 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:26:25,487 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:26:25,487 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:26:25,488 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:26:25,488 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:26:25,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:26:25,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:26:25,489 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:26:25,489 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:26:25,490 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:26:25,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:26:25,490 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:26:25,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:26:25,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:26:25,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:26:25,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:26:25,491 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:26:25,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:26:25,491 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:26:25,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:26:25,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:26:25,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:26:25,492 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:26:25,492 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:26:25,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:26:25,493 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:26:25,493 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:26:25,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:26:25,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:26:25,494 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:26:25,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:26:25,494 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:26:25,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:26:25,495 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:26:25,495 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83dad307cba3d7607e136206fd160e874fd8a32bc88cbef3e5973f117a7651cc Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:26:25,813 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:26:25,831 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:26:25,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:26:25,837 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:26:25,837 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:26:25,838 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2023-08-31 01:26:26,968 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:26:27,174 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:26:27,175 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-symm.wvr.c [2023-08-31 01:26:27,182 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11e2d7145/5fe647b69c534513b025af234afdb348/FLAG96cb59554 [2023-08-31 01:26:27,194 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11e2d7145/5fe647b69c534513b025af234afdb348 [2023-08-31 01:26:27,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:26:27,198 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:26:27,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:26:27,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:26:27,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:26:27,202 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:26:27" (1/1) ... [2023-08-31 01:26:27,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547e0310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27, skipping insertion in model container [2023-08-31 01:26:27,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:26:27" (1/1) ... [2023-08-31 01:26:27,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:26:27,245 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:26:27,485 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-symm.wvr.c[12821,12834] [2023-08-31 01:26:27,500 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:26:27,513 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:26:27,598 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-symm.wvr.c[12821,12834] [2023-08-31 01:26:27,611 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:26:27,621 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:26:27,623 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-31 01:26:27,629 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:26:27,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27 WrapperNode [2023-08-31 01:26:27,630 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:26:27,632 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:26:27,632 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:26:27,632 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:26:27,638 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27" (1/1) ... [2023-08-31 01:26:27,663 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27" (1/1) ... [2023-08-31 01:26:27,760 INFO L138 Inliner]: procedures = 25, calls = 307, calls flagged for inlining = 69, calls inlined = 97, statements flattened = 1546 [2023-08-31 01:26:27,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:26:27,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:26:27,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:26:27,763 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:26:27,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27" (1/1) ... [2023-08-31 01:26:27,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27" (1/1) ... [2023-08-31 01:26:27,784 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27" (1/1) ... [2023-08-31 01:26:27,785 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27" (1/1) ... [2023-08-31 01:26:27,823 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27" (1/1) ... [2023-08-31 01:26:27,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27" (1/1) ... [2023-08-31 01:26:27,838 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27" (1/1) ... [2023-08-31 01:26:27,844 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27" (1/1) ... [2023-08-31 01:26:27,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:26:27,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:26:27,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:26:27,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:26:27,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27" (1/1) ... [2023-08-31 01:26:27,859 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:26:27,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:26:27,886 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) [2023-08-31 01:26:27,902 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 [2023-08-31 01:26:27,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:26:27,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:26:27,925 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:26:27,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:26:27,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:26:27,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:26:27,926 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:26:27,926 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:26:27,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:26:27,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-31 01:26:27,927 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-31 01:26:27,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 01:26:27,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:26:27,927 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:26:27,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:26:27,930 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:26:28,142 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:26:28,144 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:26:29,658 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:26:31,280 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:26:31,281 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-31 01:26:31,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:26:31 BoogieIcfgContainer [2023-08-31 01:26:31,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:26:31,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:26:31,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:26:31,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:26:31,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:26:27" (1/3) ... [2023-08-31 01:26:31,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47eaf112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:26:31, skipping insertion in model container [2023-08-31 01:26:31,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:26:27" (2/3) ... [2023-08-31 01:26:31,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47eaf112 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:26:31, skipping insertion in model container [2023-08-31 01:26:31,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:26:31" (3/3) ... [2023-08-31 01:26:31,296 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-symm.wvr.c [2023-08-31 01:26:31,305 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:26:31,313 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:26:31,314 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:26:31,314 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:26:31,601 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-31 01:26:31,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 409 places, 455 transitions, 926 flow [2023-08-31 01:26:31,847 INFO L130 PetriNetUnfolder]: 53/453 cut-off events. [2023-08-31 01:26:31,847 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:26:31,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 462 conditions, 453 events. 53/453 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 567 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 375. Up to 7 conditions per place. [2023-08-31 01:26:31,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 409 places, 455 transitions, 926 flow [2023-08-31 01:26:31,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 399 places, 445 transitions, 902 flow [2023-08-31 01:26:31,863 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:26:31,870 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 399 places, 445 transitions, 902 flow [2023-08-31 01:26:31,873 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 399 places, 445 transitions, 902 flow [2023-08-31 01:26:31,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 399 places, 445 transitions, 902 flow [2023-08-31 01:26:31,949 INFO L130 PetriNetUnfolder]: 53/445 cut-off events. [2023-08-31 01:26:31,950 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:26:31,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 454 conditions, 445 events. 53/445 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 567 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 375. Up to 7 conditions per place. [2023-08-31 01:26:31,956 INFO L119 LiptonReduction]: Number of co-enabled transitions 7700 [2023-08-31 01:27:24,433 INFO L134 LiptonReduction]: Checked pairs total: 7716 [2023-08-31 01:27:24,434 INFO L136 LiptonReduction]: Total number of compositions: 528 [2023-08-31 01:27:24,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:27:24,471 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;@2a80bb50, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:27:24,471 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-31 01:27:24,529 INFO L130 PetriNetUnfolder]: 16/38 cut-off events. [2023-08-31 01:27:24,529 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:27:24,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:27:24,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:27:24,531 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:27:24,535 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:27:24,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1344797690, now seen corresponding path program 1 times [2023-08-31 01:27:24,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:27:24,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539593807] [2023-08-31 01:27:24,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:27:24,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:27:24,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:27:25,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:27:25,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:27:25,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539593807] [2023-08-31 01:27:25,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539593807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:27:25,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:27:25,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:27:25,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361879538] [2023-08-31 01:27:25,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:27:25,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:27:25,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:27:25,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:27:25,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:27:25,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 983 [2023-08-31 01:27:25,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 39 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 373.3333333333333) internal successors, (1120), 3 states have internal predecessors, (1120), 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) [2023-08-31 01:27:25,559 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:27:25,559 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 983 [2023-08-31 01:27:25,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:27:26,140 INFO L130 PetriNetUnfolder]: 133/196 cut-off events. [2023-08-31 01:27:26,141 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2023-08-31 01:27:26,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 411 conditions, 196 events. 133/196 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 372 event pairs, 45 based on Foata normal form. 0/108 useless extension candidates. Maximal degree in co-relation 308. Up to 193 conditions per place. [2023-08-31 01:27:26,143 INFO L137 encePairwiseOnDemand]: 974/983 looper letters, 35 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2023-08-31 01:27:26,143 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 43 transitions, 184 flow [2023-08-31 01:27:26,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:27:26,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:27:26,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1148 transitions. [2023-08-31 01:27:26,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.389284503221431 [2023-08-31 01:27:26,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1148 transitions. [2023-08-31 01:27:26,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1148 transitions. [2023-08-31 01:27:26,165 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:27:26,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1148 transitions. [2023-08-31 01:27:26,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.6666666666667) internal successors, (1148), 3 states have internal predecessors, (1148), 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) [2023-08-31 01:27:26,180 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:27:26,182 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:27:26,184 INFO L175 Difference]: Start difference. First operand has 30 places, 39 transitions, 90 flow. Second operand 3 states and 1148 transitions. [2023-08-31 01:27:26,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 43 transitions, 184 flow [2023-08-31 01:27:26,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 43 transitions, 176 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-31 01:27:26,189 INFO L231 Difference]: Finished difference. Result has 29 places, 43 transitions, 124 flow [2023-08-31 01:27:26,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=29, PETRI_TRANSITIONS=43} [2023-08-31 01:27:26,193 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-08-31 01:27:26,194 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 43 transitions, 124 flow [2023-08-31 01:27:26,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 373.3333333333333) internal successors, (1120), 3 states have internal predecessors, (1120), 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) [2023-08-31 01:27:26,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:27:26,195 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] [2023-08-31 01:27:26,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:27:26,196 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:27:26,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:27:26,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1708311211, now seen corresponding path program 1 times [2023-08-31 01:27:26,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:27:26,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967693387] [2023-08-31 01:27:26,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:27:26,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:27:26,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:27:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:27:26,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:27:26,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967693387] [2023-08-31 01:27:26,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967693387] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:27:26,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420345338] [2023-08-31 01:27:26,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:27:26,457 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:27:26,457 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:27:26,461 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) [2023-08-31 01:27:26,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 01:27:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:27:27,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 400 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-31 01:27:27,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:27:27,129 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 01:27:27,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:27:27,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420345338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:27:27,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:27:27,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-31 01:27:27,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212489229] [2023-08-31 01:27:27,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:27:27,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:27:27,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:27:27,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:27:27,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-31 01:27:27,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 367 out of 983 [2023-08-31 01:27:27,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 43 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 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) [2023-08-31 01:27:27,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:27:27,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 367 of 983 [2023-08-31 01:27:27,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:27:27,737 INFO L130 PetriNetUnfolder]: 133/200 cut-off events. [2023-08-31 01:27:27,737 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-08-31 01:27:27,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 426 conditions, 200 events. 133/200 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 373 event pairs, 45 based on Foata normal form. 1/117 useless extension candidates. Maximal degree in co-relation 373. Up to 197 conditions per place. [2023-08-31 01:27:27,739 INFO L137 encePairwiseOnDemand]: 973/983 looper letters, 39 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2023-08-31 01:27:27,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 47 transitions, 226 flow [2023-08-31 01:27:27,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:27:27,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:27:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1148 transitions. [2023-08-31 01:27:27,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.389284503221431 [2023-08-31 01:27:27,743 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1148 transitions. [2023-08-31 01:27:27,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1148 transitions. [2023-08-31 01:27:27,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:27:27,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1148 transitions. [2023-08-31 01:27:27,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 382.6666666666667) internal successors, (1148), 3 states have internal predecessors, (1148), 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) [2023-08-31 01:27:27,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:27:27,753 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:27:27,754 INFO L175 Difference]: Start difference. First operand has 29 places, 43 transitions, 124 flow. Second operand 3 states and 1148 transitions. [2023-08-31 01:27:27,754 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 47 transitions, 226 flow [2023-08-31 01:27:27,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 47 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:27:27,756 INFO L231 Difference]: Finished difference. Result has 31 places, 47 transitions, 160 flow [2023-08-31 01:27:27,757 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=31, PETRI_TRANSITIONS=47} [2023-08-31 01:27:27,757 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-08-31 01:27:27,757 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 47 transitions, 160 flow [2023-08-31 01:27:27,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 374.6666666666667) internal successors, (1124), 3 states have internal predecessors, (1124), 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) [2023-08-31 01:27:27,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:27:27,759 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] [2023-08-31 01:27:27,767 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-31 01:27:27,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:27:27,968 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:27:27,968 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:27:27,969 INFO L85 PathProgramCache]: Analyzing trace with hash -457718845, now seen corresponding path program 1 times [2023-08-31 01:27:27,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:27:27,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728583804] [2023-08-31 01:27:27,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:27:27,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:27:28,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:27:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-31 01:27:28,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:27:28,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728583804] [2023-08-31 01:27:28,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728583804] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:27:28,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530962160] [2023-08-31 01:27:28,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:27:28,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:27:28,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:27:28,225 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) [2023-08-31 01:27:28,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-31 01:27:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:27:28,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 01:27:28,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:27:28,888 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-31 01:27:28,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:27:28,909 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-31 01:27:28,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530962160] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:27:28,910 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:27:28,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-31 01:27:28,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179994249] [2023-08-31 01:27:28,911 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:27:28,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-31 01:27:28,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:27:28,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-31 01:27:28,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-08-31 01:27:29,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 983 [2023-08-31 01:27:29,244 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 47 transitions, 160 flow. Second operand has 8 states, 8 states have (on average 355.625) internal successors, (2845), 8 states have internal predecessors, (2845), 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) [2023-08-31 01:27:29,244 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:27:29,244 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 983 [2023-08-31 01:27:29,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:27:29,703 INFO L130 PetriNetUnfolder]: 133/224 cut-off events. [2023-08-31 01:27:29,703 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-08-31 01:27:29,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513 conditions, 224 events. 133/224 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 373 event pairs, 45 based on Foata normal form. 12/152 useless extension candidates. Maximal degree in co-relation 393. Up to 193 conditions per place. [2023-08-31 01:27:29,705 INFO L137 encePairwiseOnDemand]: 966/983 looper letters, 31 selfloop transitions, 40 changer transitions 0/71 dead transitions. [2023-08-31 01:27:29,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 71 transitions, 398 flow [2023-08-31 01:27:29,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-31 01:27:29,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-31 01:27:29,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2903 transitions. [2023-08-31 01:27:29,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3691505595116989 [2023-08-31 01:27:29,716 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2903 transitions. [2023-08-31 01:27:29,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2903 transitions. [2023-08-31 01:27:29,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:27:29,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2903 transitions. [2023-08-31 01:27:29,723 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 362.875) internal successors, (2903), 8 states have internal predecessors, (2903), 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) [2023-08-31 01:27:29,734 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 983.0) internal successors, (8847), 9 states have internal predecessors, (8847), 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) [2023-08-31 01:27:29,738 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 983.0) internal successors, (8847), 9 states have internal predecessors, (8847), 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) [2023-08-31 01:27:29,738 INFO L175 Difference]: Start difference. First operand has 31 places, 47 transitions, 160 flow. Second operand 8 states and 2903 transitions. [2023-08-31 01:27:29,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 71 transitions, 398 flow [2023-08-31 01:27:29,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 71 transitions, 390 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:27:29,741 INFO L231 Difference]: Finished difference. Result has 40 places, 71 transitions, 390 flow [2023-08-31 01:27:29,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=390, PETRI_PLACES=40, PETRI_TRANSITIONS=71} [2023-08-31 01:27:29,742 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2023-08-31 01:27:29,742 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 71 transitions, 390 flow [2023-08-31 01:27:29,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 355.625) internal successors, (2845), 8 states have internal predecessors, (2845), 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) [2023-08-31 01:27:29,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:27:29,744 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 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] [2023-08-31 01:27:29,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-31 01:27:29,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-31 01:27:29,953 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:27:29,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:27:29,954 INFO L85 PathProgramCache]: Analyzing trace with hash 141857420, now seen corresponding path program 2 times [2023-08-31 01:27:29,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:27:29,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838595310] [2023-08-31 01:27:29,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:27:29,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:27:30,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:27:30,277 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-31 01:27:30,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:27:30,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838595310] [2023-08-31 01:27:30,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838595310] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:27:30,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076678511] [2023-08-31 01:27:30,278 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-31 01:27:30,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:27:30,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:27:30,281 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) [2023-08-31 01:27:30,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-31 01:27:30,887 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-31 01:27:30,887 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:27:30,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 01:27:30,906 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:27:36,910 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:27:36,911 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1365 treesize of output 1191 [2023-08-31 01:28:10,323 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-08-31 01:28:10,324 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:28:10,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076678511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:28:10,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:28:10,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-31 01:28:10,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512966620] [2023-08-31 01:28:10,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:28:10,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:28:10,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:28:10,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:28:10,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:28:10,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 983 [2023-08-31 01:28:10,479 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 71 transitions, 390 flow. Second operand has 4 states, 4 states have (on average 381.75) internal successors, (1527), 4 states have internal predecessors, (1527), 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) [2023-08-31 01:28:10,479 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:28:10,479 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 983 [2023-08-31 01:28:10,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:28:11,224 INFO L130 PetriNetUnfolder]: 220/356 cut-off events. [2023-08-31 01:28:11,225 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-08-31 01:28:11,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 356 events. 220/356 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 889 event pairs, 29 based on Foata normal form. 1/220 useless extension candidates. Maximal degree in co-relation 678. Up to 211 conditions per place. [2023-08-31 01:28:11,227 INFO L137 encePairwiseOnDemand]: 968/983 looper letters, 85 selfloop transitions, 13 changer transitions 6/104 dead transitions. [2023-08-31 01:28:11,227 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 104 transitions, 670 flow [2023-08-31 01:28:11,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:28:11,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:28:11,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1950 transitions. [2023-08-31 01:28:11,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967446592065107 [2023-08-31 01:28:11,233 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1950 transitions. [2023-08-31 01:28:11,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1950 transitions. [2023-08-31 01:28:11,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:28:11,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1950 transitions. [2023-08-31 01:28:11,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 390.0) internal successors, (1950), 5 states have internal predecessors, (1950), 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) [2023-08-31 01:28:11,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 983.0) internal successors, (5898), 6 states have internal predecessors, (5898), 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) [2023-08-31 01:28:11,248 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 983.0) internal successors, (5898), 6 states have internal predecessors, (5898), 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) [2023-08-31 01:28:11,248 INFO L175 Difference]: Start difference. First operand has 40 places, 71 transitions, 390 flow. Second operand 5 states and 1950 transitions. [2023-08-31 01:28:11,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 104 transitions, 670 flow [2023-08-31 01:28:11,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 104 transitions, 588 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-08-31 01:28:11,253 INFO L231 Difference]: Finished difference. Result has 44 places, 82 transitions, 398 flow [2023-08-31 01:28:11,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=398, PETRI_PLACES=44, PETRI_TRANSITIONS=82} [2023-08-31 01:28:11,254 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2023-08-31 01:28:11,254 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 82 transitions, 398 flow [2023-08-31 01:28:11,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 381.75) internal successors, (1527), 4 states have internal predecessors, (1527), 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) [2023-08-31 01:28:11,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:28:11,255 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 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] [2023-08-31 01:28:11,265 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-31 01:28:11,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:28:11,463 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:28:11,463 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:28:11,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1414425790, now seen corresponding path program 3 times [2023-08-31 01:28:11,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:28:11,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272026657] [2023-08-31 01:28:11,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:28:11,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:28:11,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:28:11,827 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-31 01:28:11,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:28:11,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272026657] [2023-08-31 01:28:11,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272026657] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:28:11,832 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [73846248] [2023-08-31 01:28:11,832 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-31 01:28:11,832 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:28:11,833 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:28:11,837 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:28:11,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-31 01:28:12,447 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2023-08-31 01:28:12,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:28:12,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-31 01:28:12,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:28:16,274 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:28:16,275 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1350 treesize of output 1176 [2023-08-31 01:30:19,923 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-08-31 01:30:19,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:30:19,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [73846248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:30:19,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:30:19,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 9 [2023-08-31 01:30:19,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024396580] [2023-08-31 01:30:19,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:30:19,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:30:19,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:19,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:30:19,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:30:20,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 375 out of 983 [2023-08-31 01:30:20,013 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 82 transitions, 398 flow. Second operand has 4 states, 4 states have (on average 381.75) internal successors, (1527), 4 states have internal predecessors, (1527), 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) [2023-08-31 01:30:20,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:20,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 375 of 983 [2023-08-31 01:30:20,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:20,737 INFO L130 PetriNetUnfolder]: 222/370 cut-off events. [2023-08-31 01:30:20,737 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-08-31 01:30:20,737 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1148 conditions, 370 events. 222/370 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 954 event pairs, 31 based on Foata normal form. 3/259 useless extension candidates. Maximal degree in co-relation 1128. Up to 242 conditions per place. [2023-08-31 01:30:20,739 INFO L137 encePairwiseOnDemand]: 969/983 looper letters, 86 selfloop transitions, 12 changer transitions 5/103 dead transitions. [2023-08-31 01:30:20,739 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 103 transitions, 670 flow [2023-08-31 01:30:20,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-31 01:30:20,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-31 01:30:20,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1948 transitions. [2023-08-31 01:30:20,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3963377416073245 [2023-08-31 01:30:20,744 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1948 transitions. [2023-08-31 01:30:20,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1948 transitions. [2023-08-31 01:30:20,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:20,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1948 transitions. [2023-08-31 01:30:20,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 389.6) internal successors, (1948), 5 states have internal predecessors, (1948), 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) [2023-08-31 01:30:20,754 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 983.0) internal successors, (5898), 6 states have internal predecessors, (5898), 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) [2023-08-31 01:30:20,756 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 983.0) internal successors, (5898), 6 states have internal predecessors, (5898), 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) [2023-08-31 01:30:20,756 INFO L175 Difference]: Start difference. First operand has 44 places, 82 transitions, 398 flow. Second operand 5 states and 1948 transitions. [2023-08-31 01:30:20,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 103 transitions, 670 flow [2023-08-31 01:30:20,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 103 transitions, 666 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-31 01:30:20,760 INFO L231 Difference]: Finished difference. Result has 48 places, 82 transitions, 430 flow [2023-08-31 01:30:20,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=396, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=430, PETRI_PLACES=48, PETRI_TRANSITIONS=82} [2023-08-31 01:30:20,761 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 18 predicate places. [2023-08-31 01:30:20,761 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 82 transitions, 430 flow [2023-08-31 01:30:20,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 381.75) internal successors, (1527), 4 states have internal predecessors, (1527), 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) [2023-08-31 01:30:20,762 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:20,762 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 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] [2023-08-31 01:30:20,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-31 01:30:20,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:30:20,971 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:30:20,971 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:20,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1787475852, now seen corresponding path program 4 times [2023-08-31 01:30:20,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:20,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144896051] [2023-08-31 01:30:20,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:20,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:21,337 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-31 01:30:21,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:21,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144896051] [2023-08-31 01:30:21,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144896051] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:30:21,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936741591] [2023-08-31 01:30:21,338 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-31 01:30:21,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:30:21,338 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:30:21,341 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:30:21,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-31 01:30:21,983 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-31 01:30:21,983 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:30:21,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-31 01:30:21,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:30:22,041 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-31 01:30:22,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:30:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-31 01:30:22,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936741591] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:30:22,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:30:22,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2023-08-31 01:30:22,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085061871] [2023-08-31 01:30:22,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:30:22,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:30:22,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:30:22,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:30:22,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:30:22,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 983 [2023-08-31 01:30:22,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 82 transitions, 430 flow. Second operand has 12 states, 12 states have (on average 354.0) internal successors, (4248), 12 states have internal predecessors, (4248), 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) [2023-08-31 01:30:22,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:30:22,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 983 [2023-08-31 01:30:22,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:30:23,118 INFO L130 PetriNetUnfolder]: 221/368 cut-off events. [2023-08-31 01:30:23,118 INFO L131 PetriNetUnfolder]: For 246/246 co-relation queries the response was YES. [2023-08-31 01:30:23,119 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1265 conditions, 368 events. 221/368 cut-off events. For 246/246 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 912 event pairs, 69 based on Foata normal form. 1/255 useless extension candidates. Maximal degree in co-relation 1243. Up to 333 conditions per place. [2023-08-31 01:30:23,121 INFO L137 encePairwiseOnDemand]: 966/983 looper letters, 42 selfloop transitions, 44 changer transitions 0/86 dead transitions. [2023-08-31 01:30:23,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 86 transitions, 626 flow [2023-08-31 01:30:23,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:30:23,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:30:23,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3940 transitions. [2023-08-31 01:30:23,128 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3643762138167021 [2023-08-31 01:30:23,128 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3940 transitions. [2023-08-31 01:30:23,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3940 transitions. [2023-08-31 01:30:23,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:30:23,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3940 transitions. [2023-08-31 01:30:23,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 358.1818181818182) internal successors, (3940), 11 states have internal predecessors, (3940), 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) [2023-08-31 01:30:23,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 983.0) internal successors, (11796), 12 states have internal predecessors, (11796), 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) [2023-08-31 01:30:23,151 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 983.0) internal successors, (11796), 12 states have internal predecessors, (11796), 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) [2023-08-31 01:30:23,152 INFO L175 Difference]: Start difference. First operand has 48 places, 82 transitions, 430 flow. Second operand 11 states and 3940 transitions. [2023-08-31 01:30:23,152 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 86 transitions, 626 flow [2023-08-31 01:30:23,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 613 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:30:23,156 INFO L231 Difference]: Finished difference. Result has 56 places, 86 transitions, 547 flow [2023-08-31 01:30:23,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=547, PETRI_PLACES=56, PETRI_TRANSITIONS=86} [2023-08-31 01:30:23,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 26 predicate places. [2023-08-31 01:30:23,157 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 86 transitions, 547 flow [2023-08-31 01:30:23,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 354.0) internal successors, (4248), 12 states have internal predecessors, (4248), 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) [2023-08-31 01:30:23,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:30:23,159 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:30:23,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-31 01:30:23,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:30:23,373 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:30:23,374 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:30:23,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1712025184, now seen corresponding path program 5 times [2023-08-31 01:30:23,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:30:23,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572827814] [2023-08-31 01:30:23,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:30:23,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:30:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:30:23,821 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-08-31 01:30:23,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:30:23,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572827814] [2023-08-31 01:30:23,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572827814] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:30:23,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566158312] [2023-08-31 01:30:23,823 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-31 01:30:23,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:30:23,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:30:23,825 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:30:23,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-31 01:33:40,274 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-08-31 01:33:40,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:33:40,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 688 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-31 01:33:40,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:33:40,377 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-08-31 01:33:40,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:33:40,433 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2023-08-31 01:33:40,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566158312] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:33:40,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:33:40,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2023-08-31 01:33:40,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613692729] [2023-08-31 01:33:40,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:33:40,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-31 01:33:40,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:33:40,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-31 01:33:40,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=200, Unknown=0, NotChecked=0, Total=380 [2023-08-31 01:33:41,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 983 [2023-08-31 01:33:41,174 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 86 transitions, 547 flow. Second operand has 20 states, 20 states have (on average 353.25) internal successors, (7065), 20 states have internal predecessors, (7065), 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) [2023-08-31 01:33:41,174 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:33:41,174 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 983 [2023-08-31 01:33:41,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:33:41,674 INFO L130 PetriNetUnfolder]: 221/382 cut-off events. [2023-08-31 01:33:41,674 INFO L131 PetriNetUnfolder]: For 193/193 co-relation queries the response was YES. [2023-08-31 01:33:41,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1385 conditions, 382 events. 221/382 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 901 event pairs, 69 based on Foata normal form. 14/288 useless extension candidates. Maximal degree in co-relation 1099. Up to 333 conditions per place. [2023-08-31 01:33:41,676 INFO L137 encePairwiseOnDemand]: 966/983 looper letters, 42 selfloop transitions, 58 changer transitions 0/100 dead transitions. [2023-08-31 01:33:41,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 100 transitions, 859 flow [2023-08-31 01:33:41,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-31 01:33:41,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-31 01:33:41,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 5017 transitions. [2023-08-31 01:33:41,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645545705566051 [2023-08-31 01:33:41,687 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 5017 transitions. [2023-08-31 01:33:41,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 5017 transitions. [2023-08-31 01:33:41,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:33:41,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 5017 transitions. [2023-08-31 01:33:41,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 358.35714285714283) internal successors, (5017), 14 states have internal predecessors, (5017), 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) [2023-08-31 01:33:41,711 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 983.0) internal successors, (14745), 15 states have internal predecessors, (14745), 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) [2023-08-31 01:33:41,714 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 983.0) internal successors, (14745), 15 states have internal predecessors, (14745), 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) [2023-08-31 01:33:41,714 INFO L175 Difference]: Start difference. First operand has 56 places, 86 transitions, 547 flow. Second operand 14 states and 5017 transitions. [2023-08-31 01:33:41,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 100 transitions, 859 flow [2023-08-31 01:33:41,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 100 transitions, 779 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-08-31 01:33:41,720 INFO L231 Difference]: Finished difference. Result has 70 places, 100 transitions, 793 flow [2023-08-31 01:33:41,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=467, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=86, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=793, PETRI_PLACES=70, PETRI_TRANSITIONS=100} [2023-08-31 01:33:41,721 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2023-08-31 01:33:41,722 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 100 transitions, 793 flow [2023-08-31 01:33:41,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 353.25) internal successors, (7065), 20 states have internal predecessors, (7065), 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) [2023-08-31 01:33:41,724 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:33:41,724 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:33:41,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-31 01:33:41,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:33:41,949 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:33:41,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:33:41,950 INFO L85 PathProgramCache]: Analyzing trace with hash -595377332, now seen corresponding path program 6 times [2023-08-31 01:33:41,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:33:41,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942917366] [2023-08-31 01:33:41,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:33:41,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:33:42,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:33:42,627 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-08-31 01:33:42,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:33:42,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942917366] [2023-08-31 01:33:42,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942917366] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:33:42,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410924148] [2023-08-31 01:33:42,628 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-31 01:33:42,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:33:42,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:33:42,633 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:33:42,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-31 01:33:43,292 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2023-08-31 01:33:43,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-31 01:33:43,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 21 conjunts are in the unsatisfiable core [2023-08-31 01:33:43,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:33:46,353 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:33:46,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:33:46,360 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:33:46,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:33:46,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:33:46,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-31 01:33:46,374 INFO L321 Elim1Store]: treesize reduction 120, result has 0.8 percent of original size [2023-08-31 01:33:46,374 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 446 treesize of output 395 [2023-08-31 01:33:48,782 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:33:48,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 0 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 28 case distinctions, treesize of input 1365 treesize of output 1191 [2023-08-31 01:34:18,148 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-08-31 01:34:18,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:34:18,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410924148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:34:18,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:34:18,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 25 [2023-08-31 01:34:18,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397755246] [2023-08-31 01:34:18,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:34:18,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:34:18,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:34:18,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:34:18,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=463, Unknown=0, NotChecked=0, Total=600 [2023-08-31 01:34:18,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 356 out of 983 [2023-08-31 01:34:18,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 100 transitions, 793 flow. Second operand has 12 states, 12 states have (on average 358.25) internal successors, (4299), 12 states have internal predecessors, (4299), 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) [2023-08-31 01:34:18,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:34:18,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 356 of 983 [2023-08-31 01:34:18,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:34:20,139 INFO L130 PetriNetUnfolder]: 223/394 cut-off events. [2023-08-31 01:34:20,139 INFO L131 PetriNetUnfolder]: For 238/238 co-relation queries the response was YES. [2023-08-31 01:34:20,140 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 394 events. 223/394 cut-off events. For 238/238 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1037 event pairs, 26 based on Foata normal form. 5/291 useless extension candidates. Maximal degree in co-relation 1158. Up to 225 conditions per place. [2023-08-31 01:34:20,141 INFO L137 encePairwiseOnDemand]: 969/983 looper letters, 103 selfloop transitions, 12 changer transitions 7/122 dead transitions. [2023-08-31 01:34:20,141 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 122 transitions, 1112 flow [2023-08-31 01:34:20,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-31 01:34:20,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-31 01:34:20,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2211 transitions. [2023-08-31 01:34:20,146 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3748728382502543 [2023-08-31 01:34:20,146 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2211 transitions. [2023-08-31 01:34:20,146 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2211 transitions. [2023-08-31 01:34:20,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:34:20,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2211 transitions. [2023-08-31 01:34:20,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 368.5) internal successors, (2211), 6 states have internal predecessors, (2211), 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) [2023-08-31 01:34:20,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 983.0) internal successors, (6881), 7 states have internal predecessors, (6881), 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) [2023-08-31 01:34:20,157 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 983.0) internal successors, (6881), 7 states have internal predecessors, (6881), 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) [2023-08-31 01:34:20,157 INFO L175 Difference]: Start difference. First operand has 70 places, 100 transitions, 793 flow. Second operand 6 states and 2211 transitions. [2023-08-31 01:34:20,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 122 transitions, 1112 flow [2023-08-31 01:34:20,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 122 transitions, 1040 flow, removed 28 selfloop flow, removed 1 redundant places. [2023-08-31 01:34:20,163 INFO L231 Difference]: Finished difference. Result has 76 places, 99 transitions, 750 flow [2023-08-31 01:34:20,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=750, PETRI_PLACES=76, PETRI_TRANSITIONS=99} [2023-08-31 01:34:20,164 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 46 predicate places. [2023-08-31 01:34:20,164 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 99 transitions, 750 flow [2023-08-31 01:34:20,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 358.25) internal successors, (4299), 12 states have internal predecessors, (4299), 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) [2023-08-31 01:34:20,165 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:34:20,165 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:34:20,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-31 01:34:20,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:34:20,375 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:34:20,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:34:20,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1455469097, now seen corresponding path program 1 times [2023-08-31 01:34:20,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:34:20,375 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508561273] [2023-08-31 01:34:20,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:34:20,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:34:20,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:34:20,904 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2023-08-31 01:34:20,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:34:20,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508561273] [2023-08-31 01:34:20,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508561273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:34:20,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:34:20,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:34:20,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467993080] [2023-08-31 01:34:20,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:34:20,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:34:20,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:34:20,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:34:20,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:34:20,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 385 out of 983 [2023-08-31 01:34:20,937 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 99 transitions, 750 flow. Second operand has 3 states, 3 states have (on average 394.3333333333333) internal successors, (1183), 3 states have internal predecessors, (1183), 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) [2023-08-31 01:34:20,937 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:34:20,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 385 of 983 [2023-08-31 01:34:20,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:34:21,502 INFO L130 PetriNetUnfolder]: 249/438 cut-off events. [2023-08-31 01:34:21,502 INFO L131 PetriNetUnfolder]: For 535/535 co-relation queries the response was YES. [2023-08-31 01:34:21,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1735 conditions, 438 events. 249/438 cut-off events. For 535/535 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1190 event pairs, 46 based on Foata normal form. 14/330 useless extension candidates. Maximal degree in co-relation 1699. Up to 275 conditions per place. [2023-08-31 01:34:21,505 INFO L137 encePairwiseOnDemand]: 976/983 looper letters, 117 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2023-08-31 01:34:21,505 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 120 transitions, 1093 flow [2023-08-31 01:34:21,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:34:21,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:34:21,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1213 transitions. [2023-08-31 01:34:21,508 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41132587317734826 [2023-08-31 01:34:21,508 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1213 transitions. [2023-08-31 01:34:21,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1213 transitions. [2023-08-31 01:34:21,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:34:21,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1213 transitions. [2023-08-31 01:34:21,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 404.3333333333333) internal successors, (1213), 3 states have internal predecessors, (1213), 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) [2023-08-31 01:34:21,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:34:21,513 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:34:21,514 INFO L175 Difference]: Start difference. First operand has 76 places, 99 transitions, 750 flow. Second operand 3 states and 1213 transitions. [2023-08-31 01:34:21,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 120 transitions, 1093 flow [2023-08-31 01:34:21,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 120 transitions, 1044 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-31 01:34:21,520 INFO L231 Difference]: Finished difference. Result has 74 places, 102 transitions, 759 flow [2023-08-31 01:34:21,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=717, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=759, PETRI_PLACES=74, PETRI_TRANSITIONS=102} [2023-08-31 01:34:21,521 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 44 predicate places. [2023-08-31 01:34:21,521 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 102 transitions, 759 flow [2023-08-31 01:34:21,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 394.3333333333333) internal successors, (1183), 3 states have internal predecessors, (1183), 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) [2023-08-31 01:34:21,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:34:21,522 INFO L208 CegarLoopForPetriNet]: trace histogram [12, 12, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:34:21,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 01:34:21,522 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:34:21,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:34:21,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1325857365, now seen corresponding path program 1 times [2023-08-31 01:34:21,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:34:21,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901217872] [2023-08-31 01:34:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:34:21,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:34:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:34:22,129 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-08-31 01:34:22,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:34:22,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901217872] [2023-08-31 01:34:22,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901217872] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:34:22,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173118929] [2023-08-31 01:34:22,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:34:22,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:34:22,130 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:34:22,133 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:34:22,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-31 01:34:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:34:22,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 847 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-31 01:34:22,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:34:23,111 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-08-31 01:34:23,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:34:23,209 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2023-08-31 01:34:23,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173118929] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-31 01:34:23,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-31 01:34:23,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 29 [2023-08-31 01:34:23,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850820827] [2023-08-31 01:34:23,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-31 01:34:23,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-31 01:34:23,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:34:23,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-31 01:34:23,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=328, Invalid=484, Unknown=0, NotChecked=0, Total=812 [2023-08-31 01:34:24,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 351 out of 983 [2023-08-31 01:34:24,182 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 102 transitions, 759 flow. Second operand has 29 states, 29 states have (on average 352.8965517241379) internal successors, (10234), 29 states have internal predecessors, (10234), 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) [2023-08-31 01:34:24,182 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:34:24,182 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 351 of 983 [2023-08-31 01:34:24,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:34:24,794 INFO L130 PetriNetUnfolder]: 249/440 cut-off events. [2023-08-31 01:34:24,794 INFO L131 PetriNetUnfolder]: For 590/590 co-relation queries the response was YES. [2023-08-31 01:34:24,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1740 conditions, 440 events. 249/440 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1150 event pairs, 81 based on Foata normal form. 2/344 useless extension candidates. Maximal degree in co-relation 1370. Up to 389 conditions per place. [2023-08-31 01:34:24,797 INFO L137 encePairwiseOnDemand]: 966/983 looper letters, 44 selfloop transitions, 60 changer transitions 0/104 dead transitions. [2023-08-31 01:34:24,797 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 104 transitions, 987 flow [2023-08-31 01:34:24,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-31 01:34:24,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-31 01:34:24,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 7113 transitions. [2023-08-31 01:34:24,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36180061037639877 [2023-08-31 01:34:24,807 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 7113 transitions. [2023-08-31 01:34:24,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 7113 transitions. [2023-08-31 01:34:24,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:34:24,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 7113 transitions. [2023-08-31 01:34:24,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 355.65) internal successors, (7113), 20 states have internal predecessors, (7113), 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) [2023-08-31 01:34:24,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 983.0) internal successors, (20643), 21 states have internal predecessors, (20643), 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) [2023-08-31 01:34:24,827 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 983.0) internal successors, (20643), 21 states have internal predecessors, (20643), 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) [2023-08-31 01:34:24,828 INFO L175 Difference]: Start difference. First operand has 74 places, 102 transitions, 759 flow. Second operand 20 states and 7113 transitions. [2023-08-31 01:34:24,828 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 104 transitions, 987 flow [2023-08-31 01:34:24,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 104 transitions, 975 flow, removed 3 selfloop flow, removed 2 redundant places. [2023-08-31 01:34:24,833 INFO L231 Difference]: Finished difference. Result has 92 places, 104 transitions, 897 flow [2023-08-31 01:34:24,833 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=897, PETRI_PLACES=92, PETRI_TRANSITIONS=104} [2023-08-31 01:34:24,834 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2023-08-31 01:34:24,834 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 104 transitions, 897 flow [2023-08-31 01:34:24,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 352.8965517241379) internal successors, (10234), 29 states have internal predecessors, (10234), 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) [2023-08-31 01:34:24,835 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:34:24,835 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:34:24,849 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-31 01:34:25,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-31 01:34:25,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:34:25,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:34:25,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1454465938, now seen corresponding path program 1 times [2023-08-31 01:34:25,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:34:25,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810246775] [2023-08-31 01:34:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:34:25,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:34:25,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:34:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-08-31 01:34:25,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:34:25,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810246775] [2023-08-31 01:34:25,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810246775] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:34:25,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:34:25,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:34:25,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360899489] [2023-08-31 01:34:25,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:34:25,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:34:25,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:34:25,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:34:25,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:34:25,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 399 out of 983 [2023-08-31 01:34:25,433 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 104 transitions, 897 flow. Second operand has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 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) [2023-08-31 01:34:25,433 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:34:25,433 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 399 of 983 [2023-08-31 01:34:25,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:34:26,081 INFO L130 PetriNetUnfolder]: 276/508 cut-off events. [2023-08-31 01:34:26,081 INFO L131 PetriNetUnfolder]: For 441/441 co-relation queries the response was YES. [2023-08-31 01:34:26,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1941 conditions, 508 events. 276/508 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1574 event pairs, 88 based on Foata normal form. 0/378 useless extension candidates. Maximal degree in co-relation 1513. Up to 386 conditions per place. [2023-08-31 01:34:26,085 INFO L137 encePairwiseOnDemand]: 980/983 looper letters, 115 selfloop transitions, 3 changer transitions 0/118 dead transitions. [2023-08-31 01:34:26,086 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 118 transitions, 1191 flow [2023-08-31 01:34:26,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:34:26,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:34:26,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1252 transitions. [2023-08-31 01:34:26,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4245506951508986 [2023-08-31 01:34:26,089 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1252 transitions. [2023-08-31 01:34:26,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1252 transitions. [2023-08-31 01:34:26,090 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:34:26,090 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1252 transitions. [2023-08-31 01:34:26,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 417.3333333333333) internal successors, (1252), 3 states have internal predecessors, (1252), 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) [2023-08-31 01:34:26,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:34:26,095 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:34:26,095 INFO L175 Difference]: Start difference. First operand has 92 places, 104 transitions, 897 flow. Second operand 3 states and 1252 transitions. [2023-08-31 01:34:26,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 118 transitions, 1191 flow [2023-08-31 01:34:26,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 118 transitions, 1039 flow, removed 22 selfloop flow, removed 13 redundant places. [2023-08-31 01:34:26,102 INFO L231 Difference]: Finished difference. Result has 82 places, 104 transitions, 756 flow [2023-08-31 01:34:26,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=739, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=756, PETRI_PLACES=82, PETRI_TRANSITIONS=104} [2023-08-31 01:34:26,103 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2023-08-31 01:34:26,103 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 104 transitions, 756 flow [2023-08-31 01:34:26,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 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) [2023-08-31 01:34:26,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:34:26,103 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:34:26,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 01:34:26,104 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:34:26,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:34:26,104 INFO L85 PathProgramCache]: Analyzing trace with hash 779212570, now seen corresponding path program 1 times [2023-08-31 01:34:26,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:34:26,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522900781] [2023-08-31 01:34:26,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:34:26,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:34:26,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:34:26,432 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-08-31 01:34:26,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:34:26,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522900781] [2023-08-31 01:34:26,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522900781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:34:26,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:34:26,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:34:26,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734056196] [2023-08-31 01:34:26,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:34:26,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:34:26,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:34:26,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:34:26,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:34:26,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 399 out of 983 [2023-08-31 01:34:26,439 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 104 transitions, 756 flow. Second operand has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 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) [2023-08-31 01:34:26,439 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:34:26,439 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 399 of 983 [2023-08-31 01:34:26,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:34:27,096 INFO L130 PetriNetUnfolder]: 281/525 cut-off events. [2023-08-31 01:34:27,097 INFO L131 PetriNetUnfolder]: For 513/513 co-relation queries the response was YES. [2023-08-31 01:34:27,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1951 conditions, 525 events. 281/525 cut-off events. For 513/513 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1693 event pairs, 96 based on Foata normal form. 0/402 useless extension candidates. Maximal degree in co-relation 1626. Up to 358 conditions per place. [2023-08-31 01:34:27,101 INFO L137 encePairwiseOnDemand]: 980/983 looper letters, 116 selfloop transitions, 3 changer transitions 0/119 dead transitions. [2023-08-31 01:34:27,101 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 119 transitions, 1054 flow [2023-08-31 01:34:27,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:34:27,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:34:27,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1252 transitions. [2023-08-31 01:34:27,104 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4245506951508986 [2023-08-31 01:34:27,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1252 transitions. [2023-08-31 01:34:27,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1252 transitions. [2023-08-31 01:34:27,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:34:27,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1252 transitions. [2023-08-31 01:34:27,107 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 417.3333333333333) internal successors, (1252), 3 states have internal predecessors, (1252), 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) [2023-08-31 01:34:27,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:34:27,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:34:27,109 INFO L175 Difference]: Start difference. First operand has 82 places, 104 transitions, 756 flow. Second operand 3 states and 1252 transitions. [2023-08-31 01:34:27,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 119 transitions, 1054 flow [2023-08-31 01:34:27,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 119 transitions, 1051 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:34:27,115 INFO L231 Difference]: Finished difference. Result has 84 places, 104 transitions, 764 flow [2023-08-31 01:34:27,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=764, PETRI_PLACES=84, PETRI_TRANSITIONS=104} [2023-08-31 01:34:27,116 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 54 predicate places. [2023-08-31 01:34:27,116 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 104 transitions, 764 flow [2023-08-31 01:34:27,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 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) [2023-08-31 01:34:27,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:34:27,117 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:34:27,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 01:34:27,117 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:34:27,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:34:27,118 INFO L85 PathProgramCache]: Analyzing trace with hash -750295871, now seen corresponding path program 2 times [2023-08-31 01:34:27,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:34:27,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937175740] [2023-08-31 01:34:27,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:34:27,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:34:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:34:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-08-31 01:34:27,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:34:27,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937175740] [2023-08-31 01:34:27,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937175740] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:34:27,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:34:27,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:34:27,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627051498] [2023-08-31 01:34:27,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:34:27,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:34:27,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:34:27,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:34:27,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:34:27,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 399 out of 983 [2023-08-31 01:34:27,456 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 104 transitions, 764 flow. Second operand has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 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) [2023-08-31 01:34:27,456 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:34:27,456 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 399 of 983 [2023-08-31 01:34:27,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:34:28,118 INFO L130 PetriNetUnfolder]: 303/579 cut-off events. [2023-08-31 01:34:28,118 INFO L131 PetriNetUnfolder]: For 625/625 co-relation queries the response was YES. [2023-08-31 01:34:28,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2167 conditions, 579 events. 303/579 cut-off events. For 625/625 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2020 event pairs, 100 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 1840. Up to 395 conditions per place. [2023-08-31 01:34:28,122 INFO L137 encePairwiseOnDemand]: 980/983 looper letters, 114 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2023-08-31 01:34:28,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 117 transitions, 1057 flow [2023-08-31 01:34:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:34:28,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:34:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1250 transitions. [2023-08-31 01:34:28,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.423872499152255 [2023-08-31 01:34:28,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1250 transitions. [2023-08-31 01:34:28,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1250 transitions. [2023-08-31 01:34:28,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:34:28,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1250 transitions. [2023-08-31 01:34:28,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 416.6666666666667) internal successors, (1250), 3 states have internal predecessors, (1250), 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) [2023-08-31 01:34:28,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:34:28,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:34:28,131 INFO L175 Difference]: Start difference. First operand has 84 places, 104 transitions, 764 flow. Second operand 3 states and 1250 transitions. [2023-08-31 01:34:28,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 117 transitions, 1057 flow [2023-08-31 01:34:28,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 117 transitions, 1053 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:34:28,136 INFO L231 Difference]: Finished difference. Result has 86 places, 104 transitions, 772 flow [2023-08-31 01:34:28,136 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=772, PETRI_PLACES=86, PETRI_TRANSITIONS=104} [2023-08-31 01:34:28,137 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 56 predicate places. [2023-08-31 01:34:28,137 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 104 transitions, 772 flow [2023-08-31 01:34:28,137 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 408.3333333333333) internal successors, (1225), 3 states have internal predecessors, (1225), 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) [2023-08-31 01:34:28,137 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:34:28,137 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 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] [2023-08-31 01:34:28,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 01:34:28,138 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:34:28,138 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:34:28,138 INFO L85 PathProgramCache]: Analyzing trace with hash -52120250, now seen corresponding path program 1 times [2023-08-31 01:34:28,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:34:28,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270565462] [2023-08-31 01:34:28,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:34:28,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:34:28,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:34:32,236 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-31 01:34:32,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:34:32,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270565462] [2023-08-31 01:34:32,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270565462] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:34:32,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:34:32,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:34:32,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611420509] [2023-08-31 01:34:32,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:34:32,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:34:32,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:34:32,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:34:32,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:34:32,760 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 358 out of 983 [2023-08-31 01:34:32,762 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 104 transitions, 772 flow. Second operand has 11 states, 11 states have (on average 360.6363636363636) internal successors, (3967), 11 states have internal predecessors, (3967), 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) [2023-08-31 01:34:32,762 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:34:32,763 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 358 of 983 [2023-08-31 01:34:32,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:34:33,512 INFO L130 PetriNetUnfolder]: 277/529 cut-off events. [2023-08-31 01:34:33,513 INFO L131 PetriNetUnfolder]: For 595/595 co-relation queries the response was YES. [2023-08-31 01:34:33,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2064 conditions, 529 events. 277/529 cut-off events. For 595/595 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1737 event pairs, 76 based on Foata normal form. 14/426 useless extension candidates. Maximal degree in co-relation 1735. Up to 298 conditions per place. [2023-08-31 01:34:33,517 INFO L137 encePairwiseOnDemand]: 978/983 looper letters, 118 selfloop transitions, 3 changer transitions 1/122 dead transitions. [2023-08-31 01:34:33,517 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 122 transitions, 1097 flow [2023-08-31 01:34:33,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:34:33,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:34:33,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1488 transitions. [2023-08-31 01:34:33,520 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37843336724313326 [2023-08-31 01:34:33,520 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1488 transitions. [2023-08-31 01:34:33,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1488 transitions. [2023-08-31 01:34:33,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:34:33,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1488 transitions. [2023-08-31 01:34:33,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 372.0) internal successors, (1488), 4 states have internal predecessors, (1488), 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) [2023-08-31 01:34:33,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 983.0) internal successors, (4915), 5 states have internal predecessors, (4915), 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) [2023-08-31 01:34:33,524 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 983.0) internal successors, (4915), 5 states have internal predecessors, (4915), 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) [2023-08-31 01:34:33,524 INFO L175 Difference]: Start difference. First operand has 86 places, 104 transitions, 772 flow. Second operand 4 states and 1488 transitions. [2023-08-31 01:34:33,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 122 transitions, 1097 flow [2023-08-31 01:34:33,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 122 transitions, 1094 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:34:33,530 INFO L231 Difference]: Finished difference. Result has 90 places, 104 transitions, 780 flow [2023-08-31 01:34:33,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=759, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=780, PETRI_PLACES=90, PETRI_TRANSITIONS=104} [2023-08-31 01:34:33,531 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2023-08-31 01:34:33,531 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 104 transitions, 780 flow [2023-08-31 01:34:33,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 360.6363636363636) internal successors, (3967), 11 states have internal predecessors, (3967), 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) [2023-08-31 01:34:33,532 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:34:33,532 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 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] [2023-08-31 01:34:33,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 01:34:33,532 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:34:33,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:34:33,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1918064962, now seen corresponding path program 1 times [2023-08-31 01:34:33,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:34:33,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143169459] [2023-08-31 01:34:33,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:34:33,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:34:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:34:34,778 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-31 01:34:34,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:34:34,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143169459] [2023-08-31 01:34:34,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143169459] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:34:34,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:34:34,779 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-31 01:34:34,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494981401] [2023-08-31 01:34:34,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:34:34,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-31 01:34:34,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:34:34,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-31 01:34:34,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:34:35,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 366 out of 983 [2023-08-31 01:34:35,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 104 transitions, 780 flow. Second operand has 7 states, 7 states have (on average 370.14285714285717) internal successors, (2591), 7 states have internal predecessors, (2591), 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) [2023-08-31 01:34:35,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:34:35,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 366 of 983 [2023-08-31 01:34:35,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:34:35,549 INFO L130 PetriNetUnfolder]: 223/433 cut-off events. [2023-08-31 01:34:35,549 INFO L131 PetriNetUnfolder]: For 696/696 co-relation queries the response was YES. [2023-08-31 01:34:35,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1704 conditions, 433 events. 223/433 cut-off events. For 696/696 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1299 event pairs, 62 based on Foata normal form. 16/376 useless extension candidates. Maximal degree in co-relation 1372. Up to 246 conditions per place. [2023-08-31 01:34:35,553 INFO L137 encePairwiseOnDemand]: 978/983 looper letters, 114 selfloop transitions, 3 changer transitions 1/118 dead transitions. [2023-08-31 01:34:35,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 118 transitions, 1076 flow [2023-08-31 01:34:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:34:35,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:34:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1517 transitions. [2023-08-31 01:34:35,557 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3858087487283825 [2023-08-31 01:34:35,557 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1517 transitions. [2023-08-31 01:34:35,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1517 transitions. [2023-08-31 01:34:35,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:34:35,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1517 transitions. [2023-08-31 01:34:35,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 379.25) internal successors, (1517), 4 states have internal predecessors, (1517), 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) [2023-08-31 01:34:35,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 983.0) internal successors, (4915), 5 states have internal predecessors, (4915), 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) [2023-08-31 01:34:35,563 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 983.0) internal successors, (4915), 5 states have internal predecessors, (4915), 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) [2023-08-31 01:34:35,563 INFO L175 Difference]: Start difference. First operand has 90 places, 104 transitions, 780 flow. Second operand 4 states and 1517 transitions. [2023-08-31 01:34:35,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 118 transitions, 1076 flow [2023-08-31 01:34:35,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 118 transitions, 1057 flow, removed 5 selfloop flow, removed 3 redundant places. [2023-08-31 01:34:35,569 INFO L231 Difference]: Finished difference. Result has 90 places, 103 transitions, 760 flow [2023-08-31 01:34:35,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=760, PETRI_PLACES=90, PETRI_TRANSITIONS=103} [2023-08-31 01:34:35,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2023-08-31 01:34:35,570 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 103 transitions, 760 flow [2023-08-31 01:34:35,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 370.14285714285717) internal successors, (2591), 7 states have internal predecessors, (2591), 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) [2023-08-31 01:34:35,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:34:35,570 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 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] [2023-08-31 01:34:35,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 01:34:35,571 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:34:35,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:34:35,571 INFO L85 PathProgramCache]: Analyzing trace with hash -2001024701, now seen corresponding path program 1 times [2023-08-31 01:34:35,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:34:35,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968458557] [2023-08-31 01:34:35,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:34:35,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:34:35,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:34:35,854 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2023-08-31 01:34:35,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:34:35,855 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968458557] [2023-08-31 01:34:35,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968458557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:34:35,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:34:35,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:34:35,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546757991] [2023-08-31 01:34:35,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:34:35,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:34:35,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:34:35,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:34:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:34:35,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 399 out of 983 [2023-08-31 01:34:35,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 103 transitions, 760 flow. Second operand has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 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) [2023-08-31 01:34:35,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:34:35,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 399 of 983 [2023-08-31 01:34:35,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:34:36,261 INFO L130 PetriNetUnfolder]: 232/452 cut-off events. [2023-08-31 01:34:36,261 INFO L131 PetriNetUnfolder]: For 560/560 co-relation queries the response was YES. [2023-08-31 01:34:36,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1730 conditions, 452 events. 232/452 cut-off events. For 560/560 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1357 event pairs, 87 based on Foata normal form. 0/381 useless extension candidates. Maximal degree in co-relation 1397. Up to 344 conditions per place. [2023-08-31 01:34:36,265 INFO L137 encePairwiseOnDemand]: 980/983 looper letters, 112 selfloop transitions, 3 changer transitions 0/115 dead transitions. [2023-08-31 01:34:36,265 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 115 transitions, 1041 flow [2023-08-31 01:34:36,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:34:36,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:34:36,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1246 transitions. [2023-08-31 01:34:36,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4225161071549678 [2023-08-31 01:34:36,269 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1246 transitions. [2023-08-31 01:34:36,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1246 transitions. [2023-08-31 01:34:36,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:34:36,270 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1246 transitions. [2023-08-31 01:34:36,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 415.3333333333333) internal successors, (1246), 3 states have internal predecessors, (1246), 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) [2023-08-31 01:34:36,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:34:36,276 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:34:36,276 INFO L175 Difference]: Start difference. First operand has 90 places, 103 transitions, 760 flow. Second operand 3 states and 1246 transitions. [2023-08-31 01:34:36,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 115 transitions, 1041 flow [2023-08-31 01:34:36,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 115 transitions, 1032 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-31 01:34:36,282 INFO L231 Difference]: Finished difference. Result has 89 places, 103 transitions, 763 flow [2023-08-31 01:34:36,282 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=763, PETRI_PLACES=89, PETRI_TRANSITIONS=103} [2023-08-31 01:34:36,283 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 59 predicate places. [2023-08-31 01:34:36,283 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 103 transitions, 763 flow [2023-08-31 01:34:36,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 409.0) internal successors, (1227), 3 states have internal predecessors, (1227), 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) [2023-08-31 01:34:36,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:34:36,284 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 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] [2023-08-31 01:34:36,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 01:34:36,285 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:34:36,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:34:36,286 INFO L85 PathProgramCache]: Analyzing trace with hash 1219073865, now seen corresponding path program 1 times [2023-08-31 01:34:36,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:34:36,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557218520] [2023-08-31 01:34:36,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:34:36,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:34:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:34:36,415 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 254 trivial. 0 not checked. [2023-08-31 01:34:36,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:34:36,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557218520] [2023-08-31 01:34:36,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557218520] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:34:36,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:34:36,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:34:36,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415842976] [2023-08-31 01:34:36,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:34:36,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:34:36,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:34:36,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:34:36,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:34:36,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 387 out of 983 [2023-08-31 01:34:36,436 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 103 transitions, 763 flow. Second operand has 3 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 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) [2023-08-31 01:34:36,436 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:34:36,436 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 387 of 983 [2023-08-31 01:34:36,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:34:36,825 INFO L130 PetriNetUnfolder]: 207/412 cut-off events. [2023-08-31 01:34:36,826 INFO L131 PetriNetUnfolder]: For 521/521 co-relation queries the response was YES. [2023-08-31 01:34:36,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1636 conditions, 412 events. 207/412 cut-off events. For 521/521 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1188 event pairs, 67 based on Foata normal form. 14/366 useless extension candidates. Maximal degree in co-relation 1382. Up to 297 conditions per place. [2023-08-31 01:34:36,829 INFO L137 encePairwiseOnDemand]: 978/983 looper letters, 111 selfloop transitions, 4 changer transitions 0/115 dead transitions. [2023-08-31 01:34:36,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 115 transitions, 1043 flow [2023-08-31 01:34:36,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:34:36,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:34:36,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1211 transitions. [2023-08-31 01:34:36,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41064767717870465 [2023-08-31 01:34:36,833 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1211 transitions. [2023-08-31 01:34:36,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1211 transitions. [2023-08-31 01:34:36,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:34:36,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1211 transitions. [2023-08-31 01:34:36,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 403.6666666666667) internal successors, (1211), 3 states have internal predecessors, (1211), 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) [2023-08-31 01:34:36,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:34:36,837 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 983.0) internal successors, (3932), 4 states have internal predecessors, (3932), 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) [2023-08-31 01:34:36,837 INFO L175 Difference]: Start difference. First operand has 89 places, 103 transitions, 763 flow. Second operand 3 states and 1211 transitions. [2023-08-31 01:34:36,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 115 transitions, 1043 flow [2023-08-31 01:34:36,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 115 transitions, 1040 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:34:36,843 INFO L231 Difference]: Finished difference. Result has 92 places, 105 transitions, 794 flow [2023-08-31 01:34:36,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=983, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=794, PETRI_PLACES=92, PETRI_TRANSITIONS=105} [2023-08-31 01:34:36,844 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2023-08-31 01:34:36,844 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 105 transitions, 794 flow [2023-08-31 01:34:36,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 397.3333333333333) internal successors, (1192), 3 states have internal predecessors, (1192), 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) [2023-08-31 01:34:36,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:34:36,844 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 5, 5, 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] [2023-08-31 01:34:36,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 01:34:36,845 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-31 01:34:36,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:34:36,845 INFO L85 PathProgramCache]: Analyzing trace with hash 570594595, now seen corresponding path program 1 times [2023-08-31 01:34:36,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:34:36,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262072578] [2023-08-31 01:34:36,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:34:36,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:34:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:34:44,740 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2023-08-31 01:34:44,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:34:44,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262072578] [2023-08-31 01:34:44,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262072578] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:34:44,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400911258] [2023-08-31 01:34:44,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:34:44,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:34:44,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:34:44,742 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:34:44,749 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-31 01:34:45,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:34:45,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 912 conjuncts, 42 conjunts are in the unsatisfiable core [2023-08-31 01:34:45,594 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:34:48,227 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:34:48,228 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 65 [2023-08-31 01:34:48,261 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-31 01:34:48,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 33 [2023-08-31 01:34:48,272 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-08-31 01:34:48,273 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 41 treesize of output 29 [2023-08-31 01:34:48,333 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-08-31 01:34:48,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-08-31 01:37:00,547 WARN L222 SmtUtils]: Spent 2.14m on a formula simplification. DAG size of input: 105 DAG size of output: 82 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-31 01:37:01,934 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-31 01:37:01,934 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 10 select indices, 10 select index equivalence classes, 0 disjoint index pairs (out of 45 index pairs), introduced 10 new quantified variables, introduced 45 case distinctions, treesize of input 886 treesize of output 1231 Killed by 15