./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/parallel-ticket-3.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 c947ca303cec71cbb6edeb9f866ed53067014e89778e5c242eb251405d7ab484 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-30 19:53:34,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 19:53:34,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 19:53:34,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 19:53:34,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 19:53:34,492 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 19:53:34,502 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 19:53:34,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 19:53:34,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 19:53:34,504 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 19:53:34,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 19:53:34,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 19:53:34,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 19:53:34,507 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 19:53:34,508 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 19:53:34,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 19:53:34,510 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 19:53:34,510 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 19:53:34,512 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 19:53:34,514 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 19:53:34,518 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 19:53:34,521 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 19:53:34,523 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 19:53:34,524 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 19:53:34,527 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 19:53:34,530 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 19:53:34,530 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 19:53:34,531 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 19:53:34,532 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 19:53:34,533 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 19:53:34,533 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 19:53:34,534 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 19:53:34,535 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 19:53:34,536 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 19:53:34,537 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 19:53:34,538 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 19:53:34,538 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 19:53:34,538 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 19:53:34,539 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 19:53:34,539 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 19:53:34,540 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 19:53:34,541 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 19:53:34,578 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 19:53:34,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 19:53:34,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 19:53:34,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 19:53:34,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 19:53:34,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 19:53:34,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 19:53:34,582 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 19:53:34,582 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 19:53:34,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 19:53:34,583 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 19:53:34,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 19:53:34,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 19:53:34,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 19:53:34,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 19:53:34,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 19:53:34,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 19:53:34,584 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 19:53:34,584 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 19:53:34,584 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 19:53:34,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 19:53:34,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 19:53:34,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 19:53:34,585 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 19:53:34,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 19:53:34,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 19:53:34,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 19:53:34,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 19:53:34,586 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 19:53:34,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 19:53:34,586 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 19:53:34,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 19:53:34,587 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 19:53:34,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 19:53:34,587 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 19:53:34,587 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c947ca303cec71cbb6edeb9f866ed53067014e89778e5c242eb251405d7ab484 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 19:53:34,901 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 19:53:34,920 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 19:53:34,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 19:53:34,923 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 19:53:34,924 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 19:53:34,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-08-30 19:53:36,123 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 19:53:36,372 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 19:53:36,372 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-08-30 19:53:36,378 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b28b6e9c/af4575b75d624c8987cb8845b37aa738/FLAG3b05da279 [2023-08-30 19:53:36,396 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b28b6e9c/af4575b75d624c8987cb8845b37aa738 [2023-08-30 19:53:36,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 19:53:36,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 19:53:36,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 19:53:36,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 19:53:36,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 19:53:36,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:53:36" (1/1) ... [2023-08-30 19:53:36,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ec7d948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36, skipping insertion in model container [2023-08-30 19:53:36,409 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:53:36" (1/1) ... [2023-08-30 19:53:36,416 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 19:53:36,430 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 19:53:36,563 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/parallel-ticket-3.wvr.c[3089,3102] [2023-08-30 19:53:36,566 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 19:53:36,575 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 19:53:36,592 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/parallel-ticket-3.wvr.c[3089,3102] [2023-08-30 19:53:36,593 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 19:53:36,602 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 19:53:36,602 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 19:53:36,607 INFO L208 MainTranslator]: Completed translation [2023-08-30 19:53:36,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36 WrapperNode [2023-08-30 19:53:36,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 19:53:36,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 19:53:36,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 19:53:36,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 19:53:36,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36" (1/1) ... [2023-08-30 19:53:36,619 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36" (1/1) ... [2023-08-30 19:53:36,639 INFO L138 Inliner]: procedures = 22, calls = 55, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 165 [2023-08-30 19:53:36,639 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 19:53:36,640 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 19:53:36,640 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 19:53:36,640 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 19:53:36,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36" (1/1) ... [2023-08-30 19:53:36,648 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36" (1/1) ... [2023-08-30 19:53:36,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36" (1/1) ... [2023-08-30 19:53:36,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36" (1/1) ... [2023-08-30 19:53:36,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36" (1/1) ... [2023-08-30 19:53:36,657 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36" (1/1) ... [2023-08-30 19:53:36,658 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36" (1/1) ... [2023-08-30 19:53:36,659 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36" (1/1) ... [2023-08-30 19:53:36,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 19:53:36,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 19:53:36,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 19:53:36,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 19:53:36,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36" (1/1) ... [2023-08-30 19:53:36,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 19:53:36,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:53:36,701 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-30 19:53:36,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-30 19:53:36,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 19:53:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 19:53:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 19:53:36,752 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 19:53:36,752 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 19:53:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 19:53:36,753 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 19:53:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 19:53:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 19:53:36,753 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 19:53:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 19:53:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 19:53:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 19:53:36,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 19:53:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 19:53:36,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 19:53:36,756 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-30 19:53:36,838 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 19:53:36,839 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 19:53:37,163 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 19:53:37,251 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 19:53:37,252 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 19:53:37,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:53:37 BoogieIcfgContainer [2023-08-30 19:53:37,254 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 19:53:37,256 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 19:53:37,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 19:53:37,259 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 19:53:37,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:53:36" (1/3) ... [2023-08-30 19:53:37,260 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4d9509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:53:37, skipping insertion in model container [2023-08-30 19:53:37,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:53:36" (2/3) ... [2023-08-30 19:53:37,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4d9509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:53:37, skipping insertion in model container [2023-08-30 19:53:37,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:53:37" (3/3) ... [2023-08-30 19:53:37,262 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2023-08-30 19:53:37,269 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 19:53:37,278 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 19:53:37,279 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 19:53:37,279 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 19:53:37,339 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 19:53:37,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 119 transitions, 262 flow [2023-08-30 19:53:37,424 INFO L130 PetriNetUnfolder]: 2/116 cut-off events. [2023-08-30 19:53:37,424 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 19:53:37,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 116 events. 2/116 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-08-30 19:53:37,428 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 119 transitions, 262 flow [2023-08-30 19:53:37,432 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 106 transitions, 230 flow [2023-08-30 19:53:37,435 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 19:53:37,443 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 106 transitions, 230 flow [2023-08-30 19:53:37,445 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 106 transitions, 230 flow [2023-08-30 19:53:37,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 106 transitions, 230 flow [2023-08-30 19:53:37,485 INFO L130 PetriNetUnfolder]: 2/106 cut-off events. [2023-08-30 19:53:37,485 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 19:53:37,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 106 events. 2/106 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 38 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 84. Up to 2 conditions per place. [2023-08-30 19:53:37,488 INFO L119 LiptonReduction]: Number of co-enabled transitions 702 [2023-08-30 19:53:40,741 INFO L134 LiptonReduction]: Checked pairs total: 3460 [2023-08-30 19:53:40,741 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-30 19:53:40,754 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 19:53:40,760 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;@3dc9beca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 19:53:40,761 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 19:53:40,769 INFO L130 PetriNetUnfolder]: 0/25 cut-off events. [2023-08-30 19:53:40,769 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 19:53:40,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:40,770 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] [2023-08-30 19:53:40,770 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:53:40,774 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:40,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1533714414, now seen corresponding path program 1 times [2023-08-30 19:53:40,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:40,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204285747] [2023-08-30 19:53:40,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:40,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:42,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:42,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:42,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204285747] [2023-08-30 19:53:42,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204285747] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:42,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:42,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-30 19:53:42,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945199987] [2023-08-30 19:53:42,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:42,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 19:53:42,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:42,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 19:53:42,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-30 19:53:42,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-30 19:53:42,196 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 26 transitions, 70 flow. Second operand has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:42,196 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:42,196 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-30 19:53:42,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:42,518 INFO L130 PetriNetUnfolder]: 991/1577 cut-off events. [2023-08-30 19:53:42,519 INFO L131 PetriNetUnfolder]: For 145/145 co-relation queries the response was YES. [2023-08-30 19:53:42,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3298 conditions, 1577 events. 991/1577 cut-off events. For 145/145 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 6773 event pairs, 336 based on Foata normal form. 1/1578 useless extension candidates. Maximal degree in co-relation 2744. Up to 651 conditions per place. [2023-08-30 19:53:42,528 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 60 selfloop transitions, 9 changer transitions 13/82 dead transitions. [2023-08-30 19:53:42,529 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 82 transitions, 373 flow [2023-08-30 19:53:42,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-30 19:53:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-30 19:53:42,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 641 transitions. [2023-08-30 19:53:42,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5186084142394822 [2023-08-30 19:53:42,544 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 641 transitions. [2023-08-30 19:53:42,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 641 transitions. [2023-08-30 19:53:42,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:42,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 641 transitions. [2023-08-30 19:53:42,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 106.83333333333333) internal successors, (641), 6 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:42,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:42,559 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 206.0) internal successors, (1442), 7 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:42,561 INFO L175 Difference]: Start difference. First operand has 36 places, 26 transitions, 70 flow. Second operand 6 states and 641 transitions. [2023-08-30 19:53:42,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 82 transitions, 373 flow [2023-08-30 19:53:42,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 82 transitions, 343 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 19:53:42,568 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 109 flow [2023-08-30 19:53:42,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-08-30 19:53:42,572 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 2 predicate places. [2023-08-30 19:53:42,573 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 109 flow [2023-08-30 19:53:42,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.33333333333333) internal successors, (584), 6 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:42,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:42,574 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] [2023-08-30 19:53:42,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 19:53:42,574 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:53:42,575 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:42,575 INFO L85 PathProgramCache]: Analyzing trace with hash -667539730, now seen corresponding path program 2 times [2023-08-30 19:53:42,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:42,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61579178] [2023-08-30 19:53:42,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:42,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:42,810 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:42,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:42,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61579178] [2023-08-30 19:53:42,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61579178] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:42,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:42,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 19:53:42,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736151434] [2023-08-30 19:53:42,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:42,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:53:42,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:42,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:53:42,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:53:42,845 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-30 19:53:42,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 109 flow. Second operand has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:42,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:42,847 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-30 19:53:42,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:43,104 INFO L130 PetriNetUnfolder]: 556/1097 cut-off events. [2023-08-30 19:53:43,105 INFO L131 PetriNetUnfolder]: For 142/142 co-relation queries the response was YES. [2023-08-30 19:53:43,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 1097 events. 556/1097 cut-off events. For 142/142 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 6172 event pairs, 50 based on Foata normal form. 16/1105 useless extension candidates. Maximal degree in co-relation 1551. Up to 308 conditions per place. [2023-08-30 19:53:43,111 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 63 selfloop transitions, 24 changer transitions 0/98 dead transitions. [2023-08-30 19:53:43,111 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 98 transitions, 422 flow [2023-08-30 19:53:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 19:53:43,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 19:53:43,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 926 transitions. [2023-08-30 19:53:43,119 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4994606256742179 [2023-08-30 19:53:43,119 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 926 transitions. [2023-08-30 19:53:43,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 926 transitions. [2023-08-30 19:53:43,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:43,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 926 transitions. [2023-08-30 19:53:43,123 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 102.88888888888889) internal successors, (926), 9 states have internal predecessors, (926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:43,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:43,127 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:43,128 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 109 flow. Second operand 9 states and 926 transitions. [2023-08-30 19:53:43,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 98 transitions, 422 flow [2023-08-30 19:53:43,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 98 transitions, 417 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 19:53:43,134 INFO L231 Difference]: Finished difference. Result has 50 places, 56 transitions, 251 flow [2023-08-30 19:53:43,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=251, PETRI_PLACES=50, PETRI_TRANSITIONS=56} [2023-08-30 19:53:43,135 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 14 predicate places. [2023-08-30 19:53:43,135 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 56 transitions, 251 flow [2023-08-30 19:53:43,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:43,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:43,136 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] [2023-08-30 19:53:43,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 19:53:43,137 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:53:43,140 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:43,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1088940052, now seen corresponding path program 3 times [2023-08-30 19:53:43,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:43,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720774006] [2023-08-30 19:53:43,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:43,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:43,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:43,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:43,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:43,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720774006] [2023-08-30 19:53:43,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720774006] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:43,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:43,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 19:53:43,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713096775] [2023-08-30 19:53:43,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:43,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 19:53:43,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:43,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 19:53:43,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 19:53:43,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-30 19:53:43,362 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 56 transitions, 251 flow. Second operand has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:43,362 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:43,362 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-30 19:53:43,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:43,565 INFO L130 PetriNetUnfolder]: 494/981 cut-off events. [2023-08-30 19:53:43,565 INFO L131 PetriNetUnfolder]: For 897/967 co-relation queries the response was YES. [2023-08-30 19:53:43,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2806 conditions, 981 events. 494/981 cut-off events. For 897/967 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5209 event pairs, 98 based on Foata normal form. 52/1023 useless extension candidates. Maximal degree in co-relation 1765. Up to 571 conditions per place. [2023-08-30 19:53:43,573 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 58 selfloop transitions, 20 changer transitions 4/93 dead transitions. [2023-08-30 19:53:43,573 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 93 transitions, 555 flow [2023-08-30 19:53:43,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:53:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:53:43,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 718 transitions. [2023-08-30 19:53:43,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49791955617198336 [2023-08-30 19:53:43,577 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 718 transitions. [2023-08-30 19:53:43,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 718 transitions. [2023-08-30 19:53:43,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:43,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 718 transitions. [2023-08-30 19:53:43,579 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:43,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:43,583 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:43,583 INFO L175 Difference]: Start difference. First operand has 50 places, 56 transitions, 251 flow. Second operand 7 states and 718 transitions. [2023-08-30 19:53:43,583 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 93 transitions, 555 flow [2023-08-30 19:53:43,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 93 transitions, 555 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 19:53:43,590 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 366 flow [2023-08-30 19:53:43,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2023-08-30 19:53:43,592 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 23 predicate places. [2023-08-30 19:53:43,595 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 366 flow [2023-08-30 19:53:43,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:43,596 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:43,596 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] [2023-08-30 19:53:43,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 19:53:43,596 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:53:43,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:43,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1895373104, now seen corresponding path program 4 times [2023-08-30 19:53:43,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:43,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012997706] [2023-08-30 19:53:43,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:43,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:43,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:43,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:43,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:43,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012997706] [2023-08-30 19:53:43,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012997706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:43,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:43,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 19:53:43,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747534594] [2023-08-30 19:53:43,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:43,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 19:53:43,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:43,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 19:53:43,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 19:53:43,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 206 [2023-08-30 19:53:43,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 366 flow. Second operand has 6 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:43,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:43,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 206 [2023-08-30 19:53:43,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:44,054 INFO L130 PetriNetUnfolder]: 387/796 cut-off events. [2023-08-30 19:53:44,055 INFO L131 PetriNetUnfolder]: For 1374/1484 co-relation queries the response was YES. [2023-08-30 19:53:44,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2653 conditions, 796 events. 387/796 cut-off events. For 1374/1484 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4092 event pairs, 80 based on Foata normal form. 60/853 useless extension candidates. Maximal degree in co-relation 2040. Up to 508 conditions per place. [2023-08-30 19:53:44,062 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 47 selfloop transitions, 16 changer transitions 11/85 dead transitions. [2023-08-30 19:53:44,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 85 transitions, 578 flow [2023-08-30 19:53:44,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:53:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:53:44,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 716 transitions. [2023-08-30 19:53:44,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49653259361997226 [2023-08-30 19:53:44,069 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 716 transitions. [2023-08-30 19:53:44,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 716 transitions. [2023-08-30 19:53:44,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:44,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 716 transitions. [2023-08-30 19:53:44,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.28571428571429) internal successors, (716), 7 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,074 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,074 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,075 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 366 flow. Second operand 7 states and 716 transitions. [2023-08-30 19:53:44,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 85 transitions, 578 flow [2023-08-30 19:53:44,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 85 transitions, 562 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-30 19:53:44,082 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 379 flow [2023-08-30 19:53:44,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=322, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=379, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-08-30 19:53:44,084 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-08-30 19:53:44,084 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 379 flow [2023-08-30 19:53:44,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.66666666666667) internal successors, (586), 6 states have internal predecessors, (586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:44,085 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] [2023-08-30 19:53:44,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 19:53:44,085 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:53:44,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:44,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1934826232, now seen corresponding path program 5 times [2023-08-30 19:53:44,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:44,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635250895] [2023-08-30 19:53:44,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:44,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:44,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:44,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:44,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635250895] [2023-08-30 19:53:44,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635250895] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:44,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:44,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 19:53:44,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930856049] [2023-08-30 19:53:44,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:44,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 19:53:44,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:44,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 19:53:44,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-30 19:53:44,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-30 19:53:44,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 59 transitions, 379 flow. Second operand has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,328 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:44,328 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-30 19:53:44,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:44,453 INFO L130 PetriNetUnfolder]: 177/400 cut-off events. [2023-08-30 19:53:44,453 INFO L131 PetriNetUnfolder]: For 680/724 co-relation queries the response was YES. [2023-08-30 19:53:44,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1413 conditions, 400 events. 177/400 cut-off events. For 680/724 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1750 event pairs, 32 based on Foata normal form. 42/442 useless extension candidates. Maximal degree in co-relation 1395. Up to 258 conditions per place. [2023-08-30 19:53:44,456 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 49 selfloop transitions, 16 changer transitions 0/71 dead transitions. [2023-08-30 19:53:44,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 71 transitions, 538 flow [2023-08-30 19:53:44,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:53:44,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:53:44,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 702 transitions. [2023-08-30 19:53:44,459 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4868238557558946 [2023-08-30 19:53:44,459 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 702 transitions. [2023-08-30 19:53:44,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 702 transitions. [2023-08-30 19:53:44,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:44,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 702 transitions. [2023-08-30 19:53:44,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.28571428571429) internal successors, (702), 7 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,464 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,464 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,464 INFO L175 Difference]: Start difference. First operand has 65 places, 59 transitions, 379 flow. Second operand 7 states and 702 transitions. [2023-08-30 19:53:44,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 71 transitions, 538 flow [2023-08-30 19:53:44,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 71 transitions, 497 flow, removed 10 selfloop flow, removed 8 redundant places. [2023-08-30 19:53:44,469 INFO L231 Difference]: Finished difference. Result has 58 places, 56 transitions, 375 flow [2023-08-30 19:53:44,469 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=58, PETRI_TRANSITIONS=56} [2023-08-30 19:53:44,471 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 22 predicate places. [2023-08-30 19:53:44,472 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 56 transitions, 375 flow [2023-08-30 19:53:44,472 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,472 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:44,472 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] [2023-08-30 19:53:44,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 19:53:44,473 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:53:44,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:44,473 INFO L85 PathProgramCache]: Analyzing trace with hash 780280328, now seen corresponding path program 6 times [2023-08-30 19:53:44,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:44,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55367817] [2023-08-30 19:53:44,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:44,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:44,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:44,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:44,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55367817] [2023-08-30 19:53:44,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55367817] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:44,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:44,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 19:53:44,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891015705] [2023-08-30 19:53:44,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:44,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:53:44,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:44,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:53:44,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:53:44,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 206 [2023-08-30 19:53:44,695 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 56 transitions, 375 flow. Second operand has 7 states, 7 states have (on average 98.14285714285714) internal successors, (687), 7 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,695 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:44,695 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 206 [2023-08-30 19:53:44,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:44,846 INFO L130 PetriNetUnfolder]: 177/406 cut-off events. [2023-08-30 19:53:44,846 INFO L131 PetriNetUnfolder]: For 776/832 co-relation queries the response was YES. [2023-08-30 19:53:44,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1448 conditions, 406 events. 177/406 cut-off events. For 776/832 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1818 event pairs, 28 based on Foata normal form. 26/432 useless extension candidates. Maximal degree in co-relation 1433. Up to 156 conditions per place. [2023-08-30 19:53:44,849 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 48 selfloop transitions, 22 changer transitions 6/82 dead transitions. [2023-08-30 19:53:44,850 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 82 transitions, 618 flow [2023-08-30 19:53:44,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 19:53:44,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 19:53:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 826 transitions. [2023-08-30 19:53:44,853 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5012135922330098 [2023-08-30 19:53:44,853 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 826 transitions. [2023-08-30 19:53:44,853 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 826 transitions. [2023-08-30 19:53:44,853 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:44,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 826 transitions. [2023-08-30 19:53:44,855 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 103.25) internal successors, (826), 8 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,858 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,859 INFO L175 Difference]: Start difference. First operand has 58 places, 56 transitions, 375 flow. Second operand 8 states and 826 transitions. [2023-08-30 19:53:44,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 82 transitions, 618 flow [2023-08-30 19:53:44,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 82 transitions, 611 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-30 19:53:44,863 INFO L231 Difference]: Finished difference. Result has 66 places, 57 transitions, 431 flow [2023-08-30 19:53:44,863 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=431, PETRI_PLACES=66, PETRI_TRANSITIONS=57} [2023-08-30 19:53:44,864 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 30 predicate places. [2023-08-30 19:53:44,864 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 57 transitions, 431 flow [2023-08-30 19:53:44,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 98.14285714285714) internal successors, (687), 7 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:44,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:44,865 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] [2023-08-30 19:53:44,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 19:53:44,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:53:44,866 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:44,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1012838398, now seen corresponding path program 7 times [2023-08-30 19:53:44,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:44,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349945911] [2023-08-30 19:53:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:44,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:45,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:45,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:45,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349945911] [2023-08-30 19:53:45,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349945911] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:45,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:45,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:53:45,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903935758] [2023-08-30 19:53:45,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:45,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:53:45,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:45,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:53:45,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:53:45,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-30 19:53:45,115 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 57 transitions, 431 flow. Second operand has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:45,115 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:45,116 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-30 19:53:45,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:45,290 INFO L130 PetriNetUnfolder]: 167/390 cut-off events. [2023-08-30 19:53:45,290 INFO L131 PetriNetUnfolder]: For 996/1056 co-relation queries the response was YES. [2023-08-30 19:53:45,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1481 conditions, 390 events. 167/390 cut-off events. For 996/1056 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1726 event pairs, 28 based on Foata normal form. 22/412 useless extension candidates. Maximal degree in co-relation 1463. Up to 238 conditions per place. [2023-08-30 19:53:45,293 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 48 selfloop transitions, 13 changer transitions 11/78 dead transitions. [2023-08-30 19:53:45,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 640 flow [2023-08-30 19:53:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 19:53:45,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 19:53:45,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 989 transitions. [2023-08-30 19:53:45,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48009708737864076 [2023-08-30 19:53:45,297 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 989 transitions. [2023-08-30 19:53:45,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 989 transitions. [2023-08-30 19:53:45,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:45,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 989 transitions. [2023-08-30 19:53:45,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 98.9) internal successors, (989), 10 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:45,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 206.0) internal successors, (2266), 11 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:45,304 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 206.0) internal successors, (2266), 11 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:45,304 INFO L175 Difference]: Start difference. First operand has 66 places, 57 transitions, 431 flow. Second operand 10 states and 989 transitions. [2023-08-30 19:53:45,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 640 flow [2023-08-30 19:53:45,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 78 transitions, 593 flow, removed 6 selfloop flow, removed 6 redundant places. [2023-08-30 19:53:45,309 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 384 flow [2023-08-30 19:53:45,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=384, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2023-08-30 19:53:45,310 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-08-30 19:53:45,310 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 384 flow [2023-08-30 19:53:45,310 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:45,311 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:45,311 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] [2023-08-30 19:53:45,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 19:53:45,311 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:53:45,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:45,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1760407986, now seen corresponding path program 8 times [2023-08-30 19:53:45,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:45,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866338113] [2023-08-30 19:53:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:45,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:45,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:45,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:45,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:45,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866338113] [2023-08-30 19:53:45,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866338113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:45,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:45,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:53:45,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401390465] [2023-08-30 19:53:45,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:45,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:53:45,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:45,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:53:45,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:53:45,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-30 19:53:45,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 384 flow. Second operand has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:45,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:45,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-30 19:53:45,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:45,731 INFO L130 PetriNetUnfolder]: 145/348 cut-off events. [2023-08-30 19:53:45,731 INFO L131 PetriNetUnfolder]: For 888/952 co-relation queries the response was YES. [2023-08-30 19:53:45,732 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1292 conditions, 348 events. 145/348 cut-off events. For 888/952 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1498 event pairs, 26 based on Foata normal form. 32/380 useless extension candidates. Maximal degree in co-relation 1275. Up to 220 conditions per place. [2023-08-30 19:53:45,734 INFO L137 encePairwiseOnDemand]: 199/206 looper letters, 47 selfloop transitions, 12 changer transitions 11/76 dead transitions. [2023-08-30 19:53:45,734 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 76 transitions, 605 flow [2023-08-30 19:53:45,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 19:53:45,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 19:53:45,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1083 transitions. [2023-08-30 19:53:45,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47793468667255073 [2023-08-30 19:53:45,738 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1083 transitions. [2023-08-30 19:53:45,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1083 transitions. [2023-08-30 19:53:45,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:45,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1083 transitions. [2023-08-30 19:53:45,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 98.45454545454545) internal successors, (1083), 11 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:45,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:45,745 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:45,745 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 384 flow. Second operand 11 states and 1083 transitions. [2023-08-30 19:53:45,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 76 transitions, 605 flow [2023-08-30 19:53:45,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 559 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-08-30 19:53:45,749 INFO L231 Difference]: Finished difference. Result has 69 places, 50 transitions, 339 flow [2023-08-30 19:53:45,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=339, PETRI_PLACES=69, PETRI_TRANSITIONS=50} [2023-08-30 19:53:45,749 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 33 predicate places. [2023-08-30 19:53:45,750 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 50 transitions, 339 flow [2023-08-30 19:53:45,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:45,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:45,750 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] [2023-08-30 19:53:45,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 19:53:45,751 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:53:45,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:45,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1702827762, now seen corresponding path program 9 times [2023-08-30 19:53:45,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:45,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402836706] [2023-08-30 19:53:45,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:45,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:45,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:45,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:45,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:45,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402836706] [2023-08-30 19:53:45,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402836706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:45,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:45,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:53:45,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525525500] [2023-08-30 19:53:45,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:45,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:53:45,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:45,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:53:45,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:53:45,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-30 19:53:45,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 50 transitions, 339 flow. Second operand has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:45,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:45,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-30 19:53:45,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:46,136 INFO L130 PetriNetUnfolder]: 120/291 cut-off events. [2023-08-30 19:53:46,136 INFO L131 PetriNetUnfolder]: For 711/755 co-relation queries the response was YES. [2023-08-30 19:53:46,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1076 conditions, 291 events. 120/291 cut-off events. For 711/755 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1193 event pairs, 28 based on Foata normal form. 32/323 useless extension candidates. Maximal degree in co-relation 1059. Up to 137 conditions per place. [2023-08-30 19:53:46,138 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 39 selfloop transitions, 12 changer transitions 13/70 dead transitions. [2023-08-30 19:53:46,139 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 521 flow [2023-08-30 19:53:46,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-30 19:53:46,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-30 19:53:46,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 990 transitions. [2023-08-30 19:53:46,142 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48058252427184467 [2023-08-30 19:53:46,142 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 990 transitions. [2023-08-30 19:53:46,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 990 transitions. [2023-08-30 19:53:46,143 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:46,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 990 transitions. [2023-08-30 19:53:46,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 206.0) internal successors, (2266), 11 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,150 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 206.0) internal successors, (2266), 11 states have internal predecessors, (2266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,150 INFO L175 Difference]: Start difference. First operand has 69 places, 50 transitions, 339 flow. Second operand 10 states and 990 transitions. [2023-08-30 19:53:46,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 521 flow [2023-08-30 19:53:46,153 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 70 transitions, 484 flow, removed 4 selfloop flow, removed 10 redundant places. [2023-08-30 19:53:46,158 INFO L231 Difference]: Finished difference. Result has 65 places, 43 transitions, 265 flow [2023-08-30 19:53:46,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=265, PETRI_PLACES=65, PETRI_TRANSITIONS=43} [2023-08-30 19:53:46,159 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 29 predicate places. [2023-08-30 19:53:46,159 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 43 transitions, 265 flow [2023-08-30 19:53:46,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:46,160 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] [2023-08-30 19:53:46,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 19:53:46,161 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:53:46,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:46,161 INFO L85 PathProgramCache]: Analyzing trace with hash -258616462, now seen corresponding path program 10 times [2023-08-30 19:53:46,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:46,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783335072] [2023-08-30 19:53:46,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:46,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:46,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:46,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:46,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783335072] [2023-08-30 19:53:46,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783335072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:46,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:46,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 19:53:46,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537971795] [2023-08-30 19:53:46,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:46,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:53:46,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:46,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:53:46,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:53:46,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-30 19:53:46,365 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 43 transitions, 265 flow. Second operand has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,365 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:46,365 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-30 19:53:46,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:46,475 INFO L130 PetriNetUnfolder]: 104/269 cut-off events. [2023-08-30 19:53:46,475 INFO L131 PetriNetUnfolder]: For 522/534 co-relation queries the response was YES. [2023-08-30 19:53:46,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 919 conditions, 269 events. 104/269 cut-off events. For 522/534 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1063 event pairs, 16 based on Foata normal form. 4/273 useless extension candidates. Maximal degree in co-relation 903. Up to 106 conditions per place. [2023-08-30 19:53:46,478 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 36 selfloop transitions, 23 changer transitions 5/70 dead transitions. [2023-08-30 19:53:46,478 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 70 transitions, 488 flow [2023-08-30 19:53:46,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:53:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:53:46,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 704 transitions. [2023-08-30 19:53:46,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4882108183079057 [2023-08-30 19:53:46,482 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 704 transitions. [2023-08-30 19:53:46,482 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 704 transitions. [2023-08-30 19:53:46,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:46,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 704 transitions. [2023-08-30 19:53:46,484 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.57142857142857) internal successors, (704), 7 states have internal predecessors, (704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,487 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,487 INFO L175 Difference]: Start difference. First operand has 65 places, 43 transitions, 265 flow. Second operand 7 states and 704 transitions. [2023-08-30 19:53:46,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 70 transitions, 488 flow [2023-08-30 19:53:46,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 70 transitions, 456 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-08-30 19:53:46,492 INFO L231 Difference]: Finished difference. Result has 60 places, 50 transitions, 349 flow [2023-08-30 19:53:46,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=349, PETRI_PLACES=60, PETRI_TRANSITIONS=50} [2023-08-30 19:53:46,494 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 24 predicate places. [2023-08-30 19:53:46,494 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 50 transitions, 349 flow [2023-08-30 19:53:46,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:46,495 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] [2023-08-30 19:53:46,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 19:53:46,495 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:53:46,496 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:46,496 INFO L85 PathProgramCache]: Analyzing trace with hash -510816648, now seen corresponding path program 11 times [2023-08-30 19:53:46,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:46,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75411744] [2023-08-30 19:53:46,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:46,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:46,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:46,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:46,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75411744] [2023-08-30 19:53:46,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75411744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:46,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:46,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 19:53:46,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456047413] [2023-08-30 19:53:46,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:46,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:53:46,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:46,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:53:46,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:53:46,700 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-30 19:53:46,701 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 50 transitions, 349 flow. Second operand has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,702 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:46,702 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-30 19:53:46,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:46,808 INFO L130 PetriNetUnfolder]: 87/232 cut-off events. [2023-08-30 19:53:46,809 INFO L131 PetriNetUnfolder]: For 536/540 co-relation queries the response was YES. [2023-08-30 19:53:46,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 232 events. 87/232 cut-off events. For 536/540 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 898 event pairs, 8 based on Foata normal form. 12/244 useless extension candidates. Maximal degree in co-relation 859. Up to 70 conditions per place. [2023-08-30 19:53:46,810 INFO L137 encePairwiseOnDemand]: 198/206 looper letters, 28 selfloop transitions, 18 changer transitions 15/65 dead transitions. [2023-08-30 19:53:46,810 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 65 transitions, 501 flow [2023-08-30 19:53:46,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:53:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:53:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 703 transitions. [2023-08-30 19:53:46,813 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48751733703190014 [2023-08-30 19:53:46,813 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 703 transitions. [2023-08-30 19:53:46,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 703 transitions. [2023-08-30 19:53:46,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:46,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 703 transitions. [2023-08-30 19:53:46,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.42857142857143) internal successors, (703), 7 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,818 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,819 INFO L175 Difference]: Start difference. First operand has 60 places, 50 transitions, 349 flow. Second operand 7 states and 703 transitions. [2023-08-30 19:53:46,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 65 transitions, 501 flow [2023-08-30 19:53:46,821 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 470 flow, removed 11 selfloop flow, removed 4 redundant places. [2023-08-30 19:53:46,822 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 295 flow [2023-08-30 19:53:46,822 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=295, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2023-08-30 19:53:46,822 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 26 predicate places. [2023-08-30 19:53:46,823 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 295 flow [2023-08-30 19:53:46,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:46,823 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:46,823 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] [2023-08-30 19:53:46,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 19:53:46,824 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:53:46,824 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:46,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1584888038, now seen corresponding path program 12 times [2023-08-30 19:53:46,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:46,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483246931] [2023-08-30 19:53:46,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:46,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:46,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:46,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:46,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:46,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483246931] [2023-08-30 19:53:46,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483246931] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:46,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:46,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:53:46,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122294624] [2023-08-30 19:53:46,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:46,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:53:46,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:46,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:53:46,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:53:47,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-30 19:53:47,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 295 flow. Second operand has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:47,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:47,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-30 19:53:47,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:47,149 INFO L130 PetriNetUnfolder]: 36/107 cut-off events. [2023-08-30 19:53:47,150 INFO L131 PetriNetUnfolder]: For 334/338 co-relation queries the response was YES. [2023-08-30 19:53:47,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 427 conditions, 107 events. 36/107 cut-off events. For 334/338 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 276 event pairs, 4 based on Foata normal form. 12/119 useless extension candidates. Maximal degree in co-relation 410. Up to 47 conditions per place. [2023-08-30 19:53:47,150 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 23 selfloop transitions, 3 changer transitions 15/45 dead transitions. [2023-08-30 19:53:47,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 45 transitions, 331 flow [2023-08-30 19:53:47,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 19:53:47,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 19:53:47,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 878 transitions. [2023-08-30 19:53:47,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47357065803667747 [2023-08-30 19:53:47,153 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 878 transitions. [2023-08-30 19:53:47,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 878 transitions. [2023-08-30 19:53:47,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:47,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 878 transitions. [2023-08-30 19:53:47,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.55555555555556) internal successors, (878), 9 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:47,158 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:47,159 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 206.0) internal successors, (2060), 10 states have internal predecessors, (2060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:47,159 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 295 flow. Second operand 9 states and 878 transitions. [2023-08-30 19:53:47,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 45 transitions, 331 flow [2023-08-30 19:53:47,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 45 transitions, 270 flow, removed 5 selfloop flow, removed 14 redundant places. [2023-08-30 19:53:47,161 INFO L231 Difference]: Finished difference. Result has 56 places, 28 transitions, 125 flow [2023-08-30 19:53:47,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=125, PETRI_PLACES=56, PETRI_TRANSITIONS=28} [2023-08-30 19:53:47,162 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, 20 predicate places. [2023-08-30 19:53:47,162 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 28 transitions, 125 flow [2023-08-30 19:53:47,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:47,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:53:47,163 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] [2023-08-30 19:53:47,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 19:53:47,163 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-30 19:53:47,163 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:53:47,163 INFO L85 PathProgramCache]: Analyzing trace with hash -919681126, now seen corresponding path program 13 times [2023-08-30 19:53:47,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:53:47,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620515190] [2023-08-30 19:53:47,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:53:47,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:53:47,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:53:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:53:47,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:53:47,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620515190] [2023-08-30 19:53:47,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620515190] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:53:47,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:53:47,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:53:47,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590924658] [2023-08-30 19:53:47,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:53:47,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:53:47,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:53:47,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:53:47,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:53:47,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 206 [2023-08-30 19:53:47,359 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 28 transitions, 125 flow. Second operand has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:47,359 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:53:47,359 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 206 [2023-08-30 19:53:47,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:53:47,398 INFO L130 PetriNetUnfolder]: 9/34 cut-off events. [2023-08-30 19:53:47,398 INFO L131 PetriNetUnfolder]: For 74/74 co-relation queries the response was YES. [2023-08-30 19:53:47,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 34 events. 9/34 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 41 event pairs, 0 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 110. Up to 9 conditions per place. [2023-08-30 19:53:47,399 INFO L137 encePairwiseOnDemand]: 200/206 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-30 19:53:47,399 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 20 transitions, 117 flow [2023-08-30 19:53:47,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:53:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:53:47,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2023-08-30 19:53:47,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4646324549237171 [2023-08-30 19:53:47,401 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2023-08-30 19:53:47,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2023-08-30 19:53:47,402 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:53:47,402 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2023-08-30 19:53:47,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:47,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:47,406 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:47,406 INFO L175 Difference]: Start difference. First operand has 56 places, 28 transitions, 125 flow. Second operand 7 states and 670 transitions. [2023-08-30 19:53:47,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 20 transitions, 117 flow [2023-08-30 19:53:47,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 20 transitions, 91 flow, removed 3 selfloop flow, removed 11 redundant places. [2023-08-30 19:53:47,407 INFO L231 Difference]: Finished difference. Result has 32 places, 0 transitions, 0 flow [2023-08-30 19:53:47,407 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=32, PETRI_TRANSITIONS=0} [2023-08-30 19:53:47,408 INFO L281 CegarLoopForPetriNet]: 36 programPoint places, -4 predicate places. [2023-08-30 19:53:47,408 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 0 transitions, 0 flow [2023-08-30 19:53:47,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-30 19:53:47,411 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-30 19:53:47,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-30 19:53:47,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-30 19:53:47,412 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-30 19:53:47,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 19:53:47,413 INFO L445 BasicCegarLoop]: Path program histogram: [13] [2023-08-30 19:53:47,415 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-30 19:53:47,415 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-30 19:53:47,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 07:53:47 BasicIcfg [2023-08-30 19:53:47,418 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-30 19:53:47,418 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-08-30 19:53:47,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2023-08-30 19:53:47,419 INFO L275 PluginConnector]: Witness Printer initialized [2023-08-30 19:53:47,419 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:53:37" (3/4) ... [2023-08-30 19:53:47,421 INFO L137 WitnessPrinter]: Generating witness for correct program [2023-08-30 19:53:47,426 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2023-08-30 19:53:47,426 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2023-08-30 19:53:47,426 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2023-08-30 19:53:47,430 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2023-08-30 19:53:47,430 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2023-08-30 19:53:47,430 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2023-08-30 19:53:47,431 INFO L961 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2023-08-30 19:53:47,457 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2023-08-30 19:53:47,458 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-08-30 19:53:47,458 INFO L158 Benchmark]: Toolchain (without parser) took 11059.02ms. Allocated memory was 73.4MB in the beginning and 163.6MB in the end (delta: 90.2MB). Free memory was 50.8MB in the beginning and 110.0MB in the end (delta: -59.2MB). Peak memory consumption was 31.8MB. Max. memory is 16.1GB. [2023-08-30 19:53:47,459 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 73.4MB. Free memory was 50.3MB in the beginning and 50.2MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 19:53:47,459 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.36ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 39.4MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2023-08-30 19:53:47,459 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.37ms. Allocated memory is still 73.4MB. Free memory was 39.4MB in the beginning and 37.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 19:53:47,459 INFO L158 Benchmark]: Boogie Preprocessor took 29.94ms. Allocated memory is still 73.4MB. Free memory was 37.4MB in the beginning and 36.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2023-08-30 19:53:47,460 INFO L158 Benchmark]: RCFGBuilder took 583.38ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 36.0MB in the beginning and 56.7MB in the end (delta: -20.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2023-08-30 19:53:47,460 INFO L158 Benchmark]: TraceAbstraction took 10162.33ms. Allocated memory was 94.4MB in the beginning and 163.6MB in the end (delta: 69.2MB). Free memory was 56.0MB in the beginning and 113.2MB in the end (delta: -57.2MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. [2023-08-30 19:53:47,460 INFO L158 Benchmark]: Witness Printer took 39.37ms. Allocated memory is still 163.6MB. Free memory was 113.2MB in the beginning and 110.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-08-30 19:53:47,461 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 73.4MB. Free memory was 50.3MB in the beginning and 50.2MB in the end (delta: 94.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 207.36ms. Allocated memory is still 73.4MB. Free memory was 50.6MB in the beginning and 39.4MB in the end (delta: 11.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.37ms. Allocated memory is still 73.4MB. Free memory was 39.4MB in the beginning and 37.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.94ms. Allocated memory is still 73.4MB. Free memory was 37.4MB in the beginning and 36.0MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 583.38ms. Allocated memory was 73.4MB in the beginning and 94.4MB in the end (delta: 21.0MB). Free memory was 36.0MB in the beginning and 56.7MB in the end (delta: -20.7MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 10162.33ms. Allocated memory was 94.4MB in the beginning and 163.6MB in the end (delta: 69.2MB). Free memory was 56.0MB in the beginning and 113.2MB in the end (delta: -57.2MB). Peak memory consumption was 13.4MB. Max. memory is 16.1GB. * Witness Printer took 39.37ms. Allocated memory is still 163.6MB. Free memory was 113.2MB in the beginning and 110.0MB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 114 PlacesBefore, 36 PlacesAfterwards, 106 TransitionsBefore, 26 TransitionsAfterwards, 702 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 87 TotalNumberOfCompositions, 3460 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1355, independent: 1175, independent conditional: 0, independent unconditional: 1175, dependent: 180, dependent conditional: 0, dependent unconditional: 180, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 340, independent: 323, independent conditional: 0, independent unconditional: 323, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1355, independent: 852, independent conditional: 0, independent unconditional: 852, dependent: 163, dependent conditional: 0, dependent unconditional: 163, unknown: 340, unknown conditional: 0, unknown unconditional: 340] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 10, Negative conditional cache size: 0, Negative unconditional cache size: 10, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 124]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 143 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.0s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 584 SdHoareTripleChecker+Valid, 1.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 470 mSDsluCounter, 293 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 266 mSDsCounter, 127 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2585 IncrementalHoareTripleChecker+Invalid, 2712 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 127 mSolverCounterUnsat, 27 mSDtfsCounter, 2585 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=431occurred in iteration=6, InterpolantAutomatonStates: 105, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.1s InterpolantComputationTime, 338 NumberOfCodeBlocks, 338 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 325 ConstructedInterpolants, 0 QuantifiedInterpolants, 1530 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-30 19:53:47,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE