./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-bakery-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-bakery-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 f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --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 19:32:41,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-30 19:32:41,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-30 19:32:41,722 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-30 19:32:41,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-30 19:32:41,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-30 19:32:41,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-30 19:32:41,735 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-30 19:32:41,738 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-30 19:32:41,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-30 19:32:41,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-30 19:32:41,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-30 19:32:41,742 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-30 19:32:41,745 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-30 19:32:41,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-30 19:32:41,748 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-30 19:32:41,749 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-30 19:32:41,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-30 19:32:41,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-30 19:32:41,757 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-30 19:32:41,767 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-30 19:32:41,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-30 19:32:41,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-30 19:32:41,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-30 19:32:41,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-30 19:32:41,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-30 19:32:41,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-30 19:32:41,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-30 19:32:41,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-30 19:32:41,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-30 19:32:41,782 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-30 19:32:41,783 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-30 19:32:41,784 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-30 19:32:41,785 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-30 19:32:41,786 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-30 19:32:41,786 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-30 19:32:41,787 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-30 19:32:41,788 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-30 19:32:41,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-30 19:32:41,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-30 19:32:41,789 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-30 19:32:41,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-30 19:32:41,827 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-30 19:32:41,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-30 19:32:41,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-30 19:32:41,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-30 19:32:41,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-30 19:32:41,830 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-30 19:32:41,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-30 19:32:41,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-30 19:32:41,831 INFO L138 SettingsManager]: * Use SBE=true [2023-08-30 19:32:41,831 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-30 19:32:41,832 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-30 19:32:41,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-30 19:32:41,832 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-30 19:32:41,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-30 19:32:41,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-30 19:32:41,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-30 19:32:41,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-30 19:32:41,833 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-30 19:32:41,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-30 19:32:41,834 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-30 19:32:41,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-30 19:32:41,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-30 19:32:41,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-30 19:32:41,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-30 19:32:41,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 19:32:41,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-30 19:32:41,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-30 19:32:41,835 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-30 19:32:41,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-30 19:32:41,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-30 19:32:41,836 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-30 19:32:41,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-30 19:32:41,836 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-30 19:32:41,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-30 19:32:41,837 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-30 19:32:41,837 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-08-30 19:32:42,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-30 19:32:42,136 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-30 19:32:42,139 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-30 19:32:42,140 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-30 19:32:42,140 INFO L275 PluginConnector]: CDTParser initialized [2023-08-30 19:32:42,141 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-08-30 19:32:43,358 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-30 19:32:43,539 INFO L351 CDTParser]: Found 1 translation units. [2023-08-30 19:32:43,540 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-3.wvr.c [2023-08-30 19:32:43,545 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49672966/874a97e2319a475c9b58c25830037917/FLAGf4083361d [2023-08-30 19:32:43,556 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49672966/874a97e2319a475c9b58c25830037917 [2023-08-30 19:32:43,560 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-30 19:32:43,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-30 19:32:43,562 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-30 19:32:43,562 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-30 19:32:43,565 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-30 19:32:43,566 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:32:43" (1/1) ... [2023-08-30 19:32:43,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a8b8e26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43, skipping insertion in model container [2023-08-30 19:32:43,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 07:32:43" (1/1) ... [2023-08-30 19:32:43,574 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-30 19:32:43,609 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-30 19:32:43,743 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-bakery-3.wvr.c[5426,5439] [2023-08-30 19:32:43,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 19:32:43,762 INFO L203 MainTranslator]: Completed pre-run [2023-08-30 19:32:43,814 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-bakery-3.wvr.c[5426,5439] [2023-08-30 19:32:43,815 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-30 19:32:43,824 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 19:32:43,824 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-30 19:32:43,830 INFO L208 MainTranslator]: Completed translation [2023-08-30 19:32:43,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43 WrapperNode [2023-08-30 19:32:43,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-30 19:32:43,832 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-30 19:32:43,832 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-30 19:32:43,832 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-30 19:32:43,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43" (1/1) ... [2023-08-30 19:32:43,856 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43" (1/1) ... [2023-08-30 19:32:43,896 INFO L138 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 265 [2023-08-30 19:32:43,900 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-30 19:32:43,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-30 19:32:43,902 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-30 19:32:43,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-30 19:32:43,910 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43" (1/1) ... [2023-08-30 19:32:43,910 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43" (1/1) ... [2023-08-30 19:32:43,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43" (1/1) ... [2023-08-30 19:32:43,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43" (1/1) ... [2023-08-30 19:32:43,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43" (1/1) ... [2023-08-30 19:32:43,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43" (1/1) ... [2023-08-30 19:32:43,944 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43" (1/1) ... [2023-08-30 19:32:43,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43" (1/1) ... [2023-08-30 19:32:43,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-30 19:32:43,953 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-30 19:32:43,953 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-30 19:32:43,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-30 19:32:43,954 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43" (1/1) ... [2023-08-30 19:32:43,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-30 19:32:43,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-30 19:32:43,989 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 19:32:44,016 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 19:32:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-30 19:32:44,029 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-30 19:32:44,029 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-30 19:32:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-30 19:32:44,030 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-30 19:32:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-30 19:32:44,030 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-30 19:32:44,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-30 19:32:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-30 19:32:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-30 19:32:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-30 19:32:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-30 19:32:44,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-30 19:32:44,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-30 19:32:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-30 19:32:44,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-30 19:32:44,033 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 19:32:44,125 INFO L236 CfgBuilder]: Building ICFG [2023-08-30 19:32:44,129 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-30 19:32:44,470 INFO L277 CfgBuilder]: Performing block encoding [2023-08-30 19:32:44,584 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-30 19:32:44,584 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-30 19:32:44,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:32:44 BoogieIcfgContainer [2023-08-30 19:32:44,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-30 19:32:44,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-30 19:32:44,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-30 19:32:44,591 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-30 19:32:44,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 07:32:43" (1/3) ... [2023-08-30 19:32:44,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2badd999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:32:44, skipping insertion in model container [2023-08-30 19:32:44,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 07:32:43" (2/3) ... [2023-08-30 19:32:44,592 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2badd999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 07:32:44, skipping insertion in model container [2023-08-30 19:32:44,592 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 07:32:44" (3/3) ... [2023-08-30 19:32:44,593 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2023-08-30 19:32:44,600 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-30 19:32:44,608 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-30 19:32:44,608 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-30 19:32:44,608 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-30 19:32:44,677 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-30 19:32:44,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 155 transitions, 334 flow [2023-08-30 19:32:44,766 INFO L130 PetriNetUnfolder]: 2/152 cut-off events. [2023-08-30 19:32:44,766 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 19:32:44,770 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 152 events. 2/152 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 106 event pairs, 0 based on Foata normal form. 0/149 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-30 19:32:44,770 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 155 transitions, 334 flow [2023-08-30 19:32:44,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 142 transitions, 302 flow [2023-08-30 19:32:44,780 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-30 19:32:44,797 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 142 transitions, 302 flow [2023-08-30 19:32:44,806 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 142 transitions, 302 flow [2023-08-30 19:32:44,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 142 transitions, 302 flow [2023-08-30 19:32:44,867 INFO L130 PetriNetUnfolder]: 2/142 cut-off events. [2023-08-30 19:32:44,867 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 19:32:44,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 142 events. 2/142 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 112. Up to 2 conditions per place. [2023-08-30 19:32:44,872 INFO L119 LiptonReduction]: Number of co-enabled transitions 2184 [2023-08-30 19:32:48,568 INFO L134 LiptonReduction]: Checked pairs total: 20861 [2023-08-30 19:32:48,568 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-30 19:32:48,579 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-30 19:32:48,584 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;@1edf2b84, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-30 19:32:48,585 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-30 19:32:48,594 INFO L130 PetriNetUnfolder]: 0/48 cut-off events. [2023-08-30 19:32:48,594 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-30 19:32:48,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:32:48,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:32:48,595 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 19:32:48,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:32:48,600 INFO L85 PathProgramCache]: Analyzing trace with hash -685701629, now seen corresponding path program 1 times [2023-08-30 19:32:48,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:32:48,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996220626] [2023-08-30 19:32:48,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:32:48,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:32:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:32:49,538 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 19:32:49,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:32:49,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996220626] [2023-08-30 19:32:49,540 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996220626] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:32:49,540 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:32:49,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:32:49,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520684507] [2023-08-30 19:32:49,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:32:49,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 19:32:49,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:32:49,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 19:32:49,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-30 19:32:49,679 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-30 19:32:49,684 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 49 transitions, 116 flow. Second operand has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 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 19:32:49,684 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:32:49,684 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-30 19:32:49,685 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:32:50,742 INFO L130 PetriNetUnfolder]: 4666/7168 cut-off events. [2023-08-30 19:32:50,742 INFO L131 PetriNetUnfolder]: For 394/394 co-relation queries the response was YES. [2023-08-30 19:32:50,756 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14639 conditions, 7168 events. 4666/7168 cut-off events. For 394/394 co-relation queries the response was YES. Maximal size of possible extension queue 257. Compared 41262 event pairs, 1653 based on Foata normal form. 1/7108 useless extension candidates. Maximal degree in co-relation 12818. Up to 2475 conditions per place. [2023-08-30 19:32:50,805 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 147 selfloop transitions, 15 changer transitions 19/193 dead transitions. [2023-08-30 19:32:50,805 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 193 transitions, 820 flow [2023-08-30 19:32:50,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 19:32:50,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 19:32:50,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1469 transitions. [2023-08-30 19:32:50,826 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5237076648841354 [2023-08-30 19:32:50,827 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1469 transitions. [2023-08-30 19:32:50,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1469 transitions. [2023-08-30 19:32:50,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:32:50,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1469 transitions. [2023-08-30 19:32:50,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.54545454545453) internal successors, (1469), 11 states have internal predecessors, (1469), 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 19:32:50,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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 19:32:50,850 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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 19:32:50,852 INFO L175 Difference]: Start difference. First operand has 59 places, 49 transitions, 116 flow. Second operand 11 states and 1469 transitions. [2023-08-30 19:32:50,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 193 transitions, 820 flow [2023-08-30 19:32:50,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 193 transitions, 772 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-30 19:32:50,868 INFO L231 Difference]: Finished difference. Result has 67 places, 65 transitions, 196 flow [2023-08-30 19:32:50,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=196, PETRI_PLACES=67, PETRI_TRANSITIONS=65} [2023-08-30 19:32:50,873 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2023-08-30 19:32:50,874 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 65 transitions, 196 flow [2023-08-30 19:32:50,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 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 19:32:50,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:32:50,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:32:50,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-30 19:32:50,879 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 19:32:50,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:32:50,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1882952335, now seen corresponding path program 2 times [2023-08-30 19:32:50,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:32:50,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767512881] [2023-08-30 19:32:50,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:32:50,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:32:50,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:32:51,555 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 19:32:51,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:32:51,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767512881] [2023-08-30 19:32:51,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767512881] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:32:51,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:32:51,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:32:51,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156612913] [2023-08-30 19:32:51,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:32:51,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:32:51,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:32:51,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:32:51,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:32:51,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-30 19:32:51,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 65 transitions, 196 flow. Second operand has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 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 19:32:51,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:32:51,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-30 19:32:51,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:32:53,176 INFO L130 PetriNetUnfolder]: 10227/17591 cut-off events. [2023-08-30 19:32:53,176 INFO L131 PetriNetUnfolder]: For 290/298 co-relation queries the response was YES. [2023-08-30 19:32:53,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35463 conditions, 17591 events. 10227/17591 cut-off events. For 290/298 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 136588 event pairs, 2447 based on Foata normal form. 190/17429 useless extension candidates. Maximal degree in co-relation 35441. Up to 6390 conditions per place. [2023-08-30 19:32:53,271 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 135 selfloop transitions, 37 changer transitions 0/201 dead transitions. [2023-08-30 19:32:53,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 201 transitions, 820 flow [2023-08-30 19:32:53,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 19:32:53,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 19:32:53,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1228 transitions. [2023-08-30 19:32:53,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5350762527233115 [2023-08-30 19:32:53,275 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1228 transitions. [2023-08-30 19:32:53,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1228 transitions. [2023-08-30 19:32:53,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:32:53,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1228 transitions. [2023-08-30 19:32:53,279 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.44444444444446) internal successors, (1228), 9 states have internal predecessors, (1228), 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 19:32:53,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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 19:32:53,284 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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 19:32:53,284 INFO L175 Difference]: Start difference. First operand has 67 places, 65 transitions, 196 flow. Second operand 9 states and 1228 transitions. [2023-08-30 19:32:53,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 201 transitions, 820 flow [2023-08-30 19:32:53,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 201 transitions, 818 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-30 19:32:53,293 INFO L231 Difference]: Finished difference. Result has 80 places, 104 transitions, 460 flow [2023-08-30 19:32:53,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=460, PETRI_PLACES=80, PETRI_TRANSITIONS=104} [2023-08-30 19:32:53,294 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 21 predicate places. [2023-08-30 19:32:53,295 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 104 transitions, 460 flow [2023-08-30 19:32:53,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 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 19:32:53,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:32:53,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:32:53,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-30 19:32:53,296 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 19:32:53,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:32:53,297 INFO L85 PathProgramCache]: Analyzing trace with hash -670871719, now seen corresponding path program 3 times [2023-08-30 19:32:53,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:32:53,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455013826] [2023-08-30 19:32:53,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:32:53,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:32:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:32:53,433 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 19:32:53,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:32:53,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455013826] [2023-08-30 19:32:53,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455013826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:32:53,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:32:53,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 19:32:53,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050469292] [2023-08-30 19:32:53,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:32:53,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 19:32:53,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:32:53,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 19:32:53,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 19:32:53,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 255 [2023-08-30 19:32:53,443 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 104 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 19:32:53,443 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:32:53,443 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 255 [2023-08-30 19:32:53,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:32:54,772 INFO L130 PetriNetUnfolder]: 7985/14097 cut-off events. [2023-08-30 19:32:54,772 INFO L131 PetriNetUnfolder]: For 9371/9798 co-relation queries the response was YES. [2023-08-30 19:32:54,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36629 conditions, 14097 events. 7985/14097 cut-off events. For 9371/9798 co-relation queries the response was YES. Maximal size of possible extension queue 513. Compared 109271 event pairs, 5244 based on Foata normal form. 450/13895 useless extension candidates. Maximal degree in co-relation 26097. Up to 10070 conditions per place. [2023-08-30 19:32:54,891 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 84 selfloop transitions, 2 changer transitions 0/131 dead transitions. [2023-08-30 19:32:54,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 131 transitions, 756 flow [2023-08-30 19:32:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 19:32:54,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 19:32:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-30 19:32:54,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633986928104575 [2023-08-30 19:32:54,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-30 19:32:54,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-30 19:32:54,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:32:54,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-30 19:32:54,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 19:32:54,898 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 19:32:54,898 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 19:32:54,898 INFO L175 Difference]: Start difference. First operand has 80 places, 104 transitions, 460 flow. Second operand 3 states and 431 transitions. [2023-08-30 19:32:54,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 131 transitions, 756 flow [2023-08-30 19:32:54,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 131 transitions, 756 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-30 19:32:54,960 INFO L231 Difference]: Finished difference. Result has 83 places, 103 transitions, 464 flow [2023-08-30 19:32:54,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=464, PETRI_PLACES=83, PETRI_TRANSITIONS=103} [2023-08-30 19:32:54,961 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 24 predicate places. [2023-08-30 19:32:54,964 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 103 transitions, 464 flow [2023-08-30 19:32:54,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 19:32:54,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:32:54,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:32:54,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-30 19:32:54,965 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 19:32:54,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:32:54,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1911915813, now seen corresponding path program 4 times [2023-08-30 19:32:54,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:32:54,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570009962] [2023-08-30 19:32:54,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:32:54,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:32:55,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:32:55,266 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 19:32:55,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:32:55,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570009962] [2023-08-30 19:32:55,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570009962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:32:55,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:32:55,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 19:32:55,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107471972] [2023-08-30 19:32:55,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:32:55,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 19:32:55,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:32:55,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 19:32:55,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 19:32:55,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 255 [2023-08-30 19:32:55,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 103 transitions, 464 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 19:32:55,280 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:32:55,280 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 255 [2023-08-30 19:32:55,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:32:56,647 INFO L130 PetriNetUnfolder]: 8352/15087 cut-off events. [2023-08-30 19:32:56,648 INFO L131 PetriNetUnfolder]: For 10572/10975 co-relation queries the response was YES. [2023-08-30 19:32:56,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39577 conditions, 15087 events. 8352/15087 cut-off events. For 10572/10975 co-relation queries the response was YES. Maximal size of possible extension queue 523. Compared 121387 event pairs, 5810 based on Foata normal form. 451/14808 useless extension candidates. Maximal degree in co-relation 27830. Up to 10310 conditions per place. [2023-08-30 19:32:56,742 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 85 selfloop transitions, 2 changer transitions 0/132 dead transitions. [2023-08-30 19:32:56,742 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 132 transitions, 766 flow [2023-08-30 19:32:56,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 19:32:56,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 19:32:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-30 19:32:56,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633986928104575 [2023-08-30 19:32:56,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-30 19:32:56,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-30 19:32:56,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:32:56,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-30 19:32:56,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 19:32:56,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 19:32:56,858 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 19:32:56,858 INFO L175 Difference]: Start difference. First operand has 83 places, 103 transitions, 464 flow. Second operand 3 states and 431 transitions. [2023-08-30 19:32:56,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 132 transitions, 766 flow [2023-08-30 19:32:56,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 132 transitions, 762 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 19:32:56,920 INFO L231 Difference]: Finished difference. Result has 84 places, 103 transitions, 470 flow [2023-08-30 19:32:56,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=470, PETRI_PLACES=84, PETRI_TRANSITIONS=103} [2023-08-30 19:32:56,921 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 25 predicate places. [2023-08-30 19:32:56,921 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 103 transitions, 470 flow [2023-08-30 19:32:56,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 19:32:56,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:32:56,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:32:56,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-30 19:32:56,922 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 19:32:56,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:32:56,923 INFO L85 PathProgramCache]: Analyzing trace with hash -909351973, now seen corresponding path program 5 times [2023-08-30 19:32:56,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:32:56,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226850694] [2023-08-30 19:32:56,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:32:56,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:32:56,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:32:57,065 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 19:32:57,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:32:57,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226850694] [2023-08-30 19:32:57,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226850694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:32:57,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:32:57,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-30 19:32:57,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335592258] [2023-08-30 19:32:57,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:32:57,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-30 19:32:57,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:32:57,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-30 19:32:57,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-30 19:32:57,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 255 [2023-08-30 19:32:57,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 103 transitions, 470 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 19:32:57,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:32:57,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 255 [2023-08-30 19:32:57,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:32:58,400 INFO L130 PetriNetUnfolder]: 8350/15312 cut-off events. [2023-08-30 19:32:58,400 INFO L131 PetriNetUnfolder]: For 11435/11808 co-relation queries the response was YES. [2023-08-30 19:32:58,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41560 conditions, 15312 events. 8350/15312 cut-off events. For 11435/11808 co-relation queries the response was YES. Maximal size of possible extension queue 552. Compared 123633 event pairs, 5801 based on Foata normal form. 366/14902 useless extension candidates. Maximal degree in co-relation 28969. Up to 10791 conditions per place. [2023-08-30 19:32:58,493 INFO L137 encePairwiseOnDemand]: 251/255 looper letters, 82 selfloop transitions, 2 changer transitions 0/129 dead transitions. [2023-08-30 19:32:58,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 129 transitions, 754 flow [2023-08-30 19:32:58,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-30 19:32:58,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-30 19:32:58,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-30 19:32:58,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5633986928104575 [2023-08-30 19:32:58,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-30 19:32:58,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-30 19:32:58,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:32:58,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-30 19:32:58,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 19:32:58,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 19:32:58,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 255.0) internal successors, (1020), 4 states have internal predecessors, (1020), 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 19:32:58,498 INFO L175 Difference]: Start difference. First operand has 84 places, 103 transitions, 470 flow. Second operand 3 states and 431 transitions. [2023-08-30 19:32:58,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 129 transitions, 754 flow [2023-08-30 19:32:58,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 129 transitions, 750 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 19:32:58,537 INFO L231 Difference]: Finished difference. Result has 85 places, 103 transitions, 476 flow [2023-08-30 19:32:58,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=466, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=476, PETRI_PLACES=85, PETRI_TRANSITIONS=103} [2023-08-30 19:32:58,538 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 26 predicate places. [2023-08-30 19:32:58,538 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 103 transitions, 476 flow [2023-08-30 19:32:58,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 19:32:58,538 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:32:58,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:32:58,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-30 19:32:58,539 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 19:32:58,539 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:32:58,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1824534595, now seen corresponding path program 6 times [2023-08-30 19:32:58,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:32:58,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90319654] [2023-08-30 19:32:58,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:32:58,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:32:58,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:32:58,881 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 19:32:58,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:32:58,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90319654] [2023-08-30 19:32:58,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90319654] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:32:58,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:32:58,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:32:58,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956502801] [2023-08-30 19:32:58,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:32:58,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 19:32:58,885 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:32:58,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 19:32:58,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-30 19:32:58,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-30 19:32:58,959 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 103 transitions, 476 flow. Second operand has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 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 19:32:58,959 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:32:58,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-30 19:32:58,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:33:01,263 INFO L130 PetriNetUnfolder]: 18082/28043 cut-off events. [2023-08-30 19:33:01,264 INFO L131 PetriNetUnfolder]: For 22570/23192 co-relation queries the response was YES. [2023-08-30 19:33:01,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82612 conditions, 28043 events. 18082/28043 cut-off events. For 22570/23192 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 193012 event pairs, 6131 based on Foata normal form. 506/28130 useless extension candidates. Maximal degree in co-relation 48840. Up to 7851 conditions per place. [2023-08-30 19:33:01,456 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 262 selfloop transitions, 29 changer transitions 41/357 dead transitions. [2023-08-30 19:33:01,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 357 transitions, 2256 flow [2023-08-30 19:33:01,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 19:33:01,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 19:33:01,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1485 transitions. [2023-08-30 19:33:01,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5294117647058824 [2023-08-30 19:33:01,462 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1485 transitions. [2023-08-30 19:33:01,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1485 transitions. [2023-08-30 19:33:01,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:33:01,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1485 transitions. [2023-08-30 19:33:01,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 135.0) internal successors, (1485), 11 states have internal predecessors, (1485), 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 19:33:01,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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 19:33:01,472 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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 19:33:01,472 INFO L175 Difference]: Start difference. First operand has 85 places, 103 transitions, 476 flow. Second operand 11 states and 1485 transitions. [2023-08-30 19:33:01,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 357 transitions, 2256 flow [2023-08-30 19:33:01,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 357 transitions, 2252 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-30 19:33:01,547 INFO L231 Difference]: Finished difference. Result has 99 places, 128 transitions, 717 flow [2023-08-30 19:33:01,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=717, PETRI_PLACES=99, PETRI_TRANSITIONS=128} [2023-08-30 19:33:01,548 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 40 predicate places. [2023-08-30 19:33:01,548 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 128 transitions, 717 flow [2023-08-30 19:33:01,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 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 19:33:01,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:33:01,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:33:01,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-30 19:33:01,549 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 19:33:01,550 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:33:01,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1285316251, now seen corresponding path program 7 times [2023-08-30 19:33:01,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:33:01,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590698184] [2023-08-30 19:33:01,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:33:01,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:33:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:33:02,207 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 19:33:02,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:33:02,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590698184] [2023-08-30 19:33:02,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590698184] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:33:02,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:33:02,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 19:33:02,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512980162] [2023-08-30 19:33:02,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:33:02,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:33:02,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:33:02,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:33:02,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:33:02,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-30 19:33:02,264 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 128 transitions, 717 flow. Second operand has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 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 19:33:02,264 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:33:02,264 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-30 19:33:02,264 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:33:04,083 INFO L130 PetriNetUnfolder]: 13508/24317 cut-off events. [2023-08-30 19:33:04,083 INFO L131 PetriNetUnfolder]: For 22777/23131 co-relation queries the response was YES. [2023-08-30 19:33:04,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72127 conditions, 24317 events. 13508/24317 cut-off events. For 22777/23131 co-relation queries the response was YES. Maximal size of possible extension queue 738. Compared 202154 event pairs, 6832 based on Foata normal form. 206/23526 useless extension candidates. Maximal degree in co-relation 72055. Up to 16654 conditions per place. [2023-08-30 19:33:04,235 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 126 selfloop transitions, 28 changer transitions 0/209 dead transitions. [2023-08-30 19:33:04,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 209 transitions, 1375 flow [2023-08-30 19:33:04,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:33:04,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:33:04,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 919 transitions. [2023-08-30 19:33:04,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148459383753501 [2023-08-30 19:33:04,239 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 919 transitions. [2023-08-30 19:33:04,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 919 transitions. [2023-08-30 19:33:04,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:33:04,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 919 transitions. [2023-08-30 19:33:04,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 131.28571428571428) internal successors, (919), 7 states have internal predecessors, (919), 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 19:33:04,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 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 19:33:04,245 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 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 19:33:04,245 INFO L175 Difference]: Start difference. First operand has 99 places, 128 transitions, 717 flow. Second operand 7 states and 919 transitions. [2023-08-30 19:33:04,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 209 transitions, 1375 flow [2023-08-30 19:33:04,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 209 transitions, 1369 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-30 19:33:04,571 INFO L231 Difference]: Finished difference. Result has 107 places, 155 transitions, 970 flow [2023-08-30 19:33:04,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=711, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=970, PETRI_PLACES=107, PETRI_TRANSITIONS=155} [2023-08-30 19:33:04,572 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 48 predicate places. [2023-08-30 19:33:04,572 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 155 transitions, 970 flow [2023-08-30 19:33:04,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.14285714285714) internal successors, (855), 7 states have internal predecessors, (855), 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 19:33:04,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:33:04,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:33:04,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-30 19:33:04,573 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 19:33:04,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:33:04,573 INFO L85 PathProgramCache]: Analyzing trace with hash 148963389, now seen corresponding path program 8 times [2023-08-30 19:33:04,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:33:04,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163277389] [2023-08-30 19:33:04,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:33:04,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:33:04,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:33:04,893 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 19:33:04,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:33:04,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163277389] [2023-08-30 19:33:04,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163277389] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:33:04,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:33:04,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:33:04,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003775085] [2023-08-30 19:33:04,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:33:04,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 19:33:04,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:33:04,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 19:33:04,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-30 19:33:04,965 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-30 19:33:04,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 155 transitions, 970 flow. Second operand has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 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 19:33:04,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:33:04,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-30 19:33:04,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:33:08,327 INFO L130 PetriNetUnfolder]: 22105/34134 cut-off events. [2023-08-30 19:33:08,327 INFO L131 PetriNetUnfolder]: For 48159/49735 co-relation queries the response was YES. [2023-08-30 19:33:08,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114966 conditions, 34134 events. 22105/34134 cut-off events. For 48159/49735 co-relation queries the response was YES. Maximal size of possible extension queue 964. Compared 238816 event pairs, 8350 based on Foata normal form. 916/34559 useless extension candidates. Maximal degree in co-relation 109903. Up to 11640 conditions per place. [2023-08-30 19:33:08,728 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 256 selfloop transitions, 30 changer transitions 29/347 dead transitions. [2023-08-30 19:33:08,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 347 transitions, 2556 flow [2023-08-30 19:33:08,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 19:33:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 19:33:08,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1469 transitions. [2023-08-30 19:33:08,732 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5237076648841354 [2023-08-30 19:33:08,732 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1469 transitions. [2023-08-30 19:33:08,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1469 transitions. [2023-08-30 19:33:08,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:33:08,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1469 transitions. [2023-08-30 19:33:08,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 133.54545454545453) internal successors, (1469), 11 states have internal predecessors, (1469), 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 19:33:08,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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 19:33:08,741 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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 19:33:08,742 INFO L175 Difference]: Start difference. First operand has 107 places, 155 transitions, 970 flow. Second operand 11 states and 1469 transitions. [2023-08-30 19:33:08,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 347 transitions, 2556 flow [2023-08-30 19:33:09,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 347 transitions, 2554 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-30 19:33:09,311 INFO L231 Difference]: Finished difference. Result has 121 places, 160 transitions, 1093 flow [2023-08-30 19:33:09,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=968, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1093, PETRI_PLACES=121, PETRI_TRANSITIONS=160} [2023-08-30 19:33:09,311 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 62 predicate places. [2023-08-30 19:33:09,312 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 160 transitions, 1093 flow [2023-08-30 19:33:09,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 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 19:33:09,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:33:09,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:33:09,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-30 19:33:09,313 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 19:33:09,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:33:09,313 INFO L85 PathProgramCache]: Analyzing trace with hash -436772047, now seen corresponding path program 9 times [2023-08-30 19:33:09,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:33:09,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703629075] [2023-08-30 19:33:09,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:33:09,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:33:09,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:33:09,921 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 19:33:09,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:33:09,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703629075] [2023-08-30 19:33:09,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703629075] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:33:09,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:33:09,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 19:33:09,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676847968] [2023-08-30 19:33:09,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:33:09,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 19:33:09,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:33:09,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 19:33:09,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 19:33:09,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-30 19:33:09,968 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 160 transitions, 1093 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 states have internal predecessors, (1197), 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 19:33:09,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:33:09,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-30 19:33:09,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:33:13,071 INFO L130 PetriNetUnfolder]: 16971/30843 cut-off events. [2023-08-30 19:33:13,071 INFO L131 PetriNetUnfolder]: For 46509/47101 co-relation queries the response was YES. [2023-08-30 19:33:13,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103352 conditions, 30843 events. 16971/30843 cut-off events. For 46509/47101 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 267662 event pairs, 6779 based on Foata normal form. 206/30019 useless extension candidates. Maximal degree in co-relation 103264. Up to 21490 conditions per place. [2023-08-30 19:33:13,304 INFO L137 encePairwiseOnDemand]: 240/255 looper letters, 197 selfloop transitions, 72 changer transitions 0/327 dead transitions. [2023-08-30 19:33:13,305 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 327 transitions, 2486 flow [2023-08-30 19:33:13,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 19:33:13,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 19:33:13,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1452 transitions. [2023-08-30 19:33:13,313 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5176470588235295 [2023-08-30 19:33:13,313 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1452 transitions. [2023-08-30 19:33:13,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1452 transitions. [2023-08-30 19:33:13,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:33:13,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1452 transitions. [2023-08-30 19:33:13,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 132.0) internal successors, (1452), 11 states have internal predecessors, (1452), 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 19:33:13,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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 19:33:13,322 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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 19:33:13,322 INFO L175 Difference]: Start difference. First operand has 121 places, 160 transitions, 1093 flow. Second operand 11 states and 1452 transitions. [2023-08-30 19:33:13,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 327 transitions, 2486 flow [2023-08-30 19:33:13,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 327 transitions, 2451 flow, removed 10 selfloop flow, removed 4 redundant places. [2023-08-30 19:33:13,931 INFO L231 Difference]: Finished difference. Result has 134 places, 231 transitions, 1851 flow [2023-08-30 19:33:13,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1851, PETRI_PLACES=134, PETRI_TRANSITIONS=231} [2023-08-30 19:33:13,932 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 75 predicate places. [2023-08-30 19:33:13,932 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 231 transitions, 1851 flow [2023-08-30 19:33:13,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 states have internal predecessors, (1197), 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 19:33:13,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:33:13,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:33:13,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-30 19:33:13,933 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 19:33:13,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:33:13,934 INFO L85 PathProgramCache]: Analyzing trace with hash -857038051, now seen corresponding path program 10 times [2023-08-30 19:33:13,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:33:13,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863493035] [2023-08-30 19:33:13,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:33:13,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:33:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:33:14,519 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 19:33:14,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:33:14,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863493035] [2023-08-30 19:33:14,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863493035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:33:14,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:33:14,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-30 19:33:14,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486561124] [2023-08-30 19:33:14,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:33:14,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-30 19:33:14,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:33:14,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-30 19:33:14,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-30 19:33:14,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-30 19:33:14,594 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 231 transitions, 1851 flow. Second operand has 7 states, 7 states have (on average 122.28571428571429) internal successors, (856), 7 states have internal predecessors, (856), 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 19:33:14,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:33:14,595 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-30 19:33:14,595 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:33:18,316 INFO L130 PetriNetUnfolder]: 18451/34293 cut-off events. [2023-08-30 19:33:18,317 INFO L131 PetriNetUnfolder]: For 82494/84455 co-relation queries the response was YES. [2023-08-30 19:33:18,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 125091 conditions, 34293 events. 18451/34293 cut-off events. For 82494/84455 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 307136 event pairs, 6124 based on Foata normal form. 668/34055 useless extension candidates. Maximal degree in co-relation 122531. Up to 13043 conditions per place. [2023-08-30 19:33:18,552 INFO L137 encePairwiseOnDemand]: 241/255 looper letters, 229 selfloop transitions, 72 changer transitions 3/367 dead transitions. [2023-08-30 19:33:18,552 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 367 transitions, 3267 flow [2023-08-30 19:33:18,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:33:18,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:33:18,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 962 transitions. [2023-08-30 19:33:18,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5389355742296918 [2023-08-30 19:33:18,555 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 962 transitions. [2023-08-30 19:33:18,555 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 962 transitions. [2023-08-30 19:33:18,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:33:18,556 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 962 transitions. [2023-08-30 19:33:18,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 137.42857142857142) internal successors, (962), 7 states have internal predecessors, (962), 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 19:33:18,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 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 19:33:18,561 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 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 19:33:18,561 INFO L175 Difference]: Start difference. First operand has 134 places, 231 transitions, 1851 flow. Second operand 7 states and 962 transitions. [2023-08-30 19:33:18,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 367 transitions, 3267 flow [2023-08-30 19:33:19,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 367 transitions, 3211 flow, removed 28 selfloop flow, removed 0 redundant places. [2023-08-30 19:33:19,105 INFO L231 Difference]: Finished difference. Result has 144 places, 252 transitions, 2266 flow [2023-08-30 19:33:19,106 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=1781, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2266, PETRI_PLACES=144, PETRI_TRANSITIONS=252} [2023-08-30 19:33:19,107 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 85 predicate places. [2023-08-30 19:33:19,108 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 252 transitions, 2266 flow [2023-08-30 19:33:19,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.28571428571429) internal successors, (856), 7 states have internal predecessors, (856), 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 19:33:19,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:33:19,109 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:33:19,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-30 19:33:19,109 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 19:33:19,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:33:19,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1057114369, now seen corresponding path program 11 times [2023-08-30 19:33:19,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:33:19,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393456483] [2023-08-30 19:33:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:33:19,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:33:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:33:19,367 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 19:33:19,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:33:19,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393456483] [2023-08-30 19:33:19,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393456483] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:33:19,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:33:19,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:33:19,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038757811] [2023-08-30 19:33:19,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:33:19,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-30 19:33:19,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:33:19,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-30 19:33:19,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2023-08-30 19:33:19,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-30 19:33:19,467 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 252 transitions, 2266 flow. Second operand has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 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 19:33:19,467 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:33:19,467 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-30 19:33:19,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:33:25,288 INFO L130 PetriNetUnfolder]: 30033/48681 cut-off events. [2023-08-30 19:33:25,289 INFO L131 PetriNetUnfolder]: For 150267/152327 co-relation queries the response was YES. [2023-08-30 19:33:25,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 196148 conditions, 48681 events. 30033/48681 cut-off events. For 150267/152327 co-relation queries the response was YES. Maximal size of possible extension queue 1137. Compared 376948 event pairs, 10902 based on Foata normal form. 694/48786 useless extension candidates. Maximal degree in co-relation 191277. Up to 13549 conditions per place. [2023-08-30 19:33:25,771 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 377 selfloop transitions, 32 changer transitions 61/533 dead transitions. [2023-08-30 19:33:25,771 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 533 transitions, 5194 flow [2023-08-30 19:33:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-30 19:33:25,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-30 19:33:25,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1481 transitions. [2023-08-30 19:33:25,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5279857397504456 [2023-08-30 19:33:25,774 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1481 transitions. [2023-08-30 19:33:25,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1481 transitions. [2023-08-30 19:33:25,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:33:25,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1481 transitions. [2023-08-30 19:33:25,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 134.63636363636363) internal successors, (1481), 11 states have internal predecessors, (1481), 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 19:33:25,781 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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 19:33:25,782 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 255.0) internal successors, (3060), 12 states have internal predecessors, (3060), 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 19:33:25,782 INFO L175 Difference]: Start difference. First operand has 144 places, 252 transitions, 2266 flow. Second operand 11 states and 1481 transitions. [2023-08-30 19:33:25,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 533 transitions, 5194 flow [2023-08-30 19:33:27,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 533 transitions, 5170 flow, removed 12 selfloop flow, removed 0 redundant places. [2023-08-30 19:33:27,369 INFO L231 Difference]: Finished difference. Result has 158 places, 257 transitions, 2395 flow [2023-08-30 19:33:27,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2260, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2395, PETRI_PLACES=158, PETRI_TRANSITIONS=257} [2023-08-30 19:33:27,370 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 99 predicate places. [2023-08-30 19:33:27,370 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 257 transitions, 2395 flow [2023-08-30 19:33:27,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 121.11111111111111) internal successors, (1090), 9 states have internal predecessors, (1090), 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 19:33:27,371 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:33:27,371 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:33:27,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-30 19:33:27,371 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 19:33:27,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:33:27,372 INFO L85 PathProgramCache]: Analyzing trace with hash 287506541, now seen corresponding path program 12 times [2023-08-30 19:33:27,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:33:27,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219280868] [2023-08-30 19:33:27,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:33:27,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:33:27,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:33:27,905 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 19:33:27,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:33:27,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219280868] [2023-08-30 19:33:27,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219280868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:33:27,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:33:27,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 19:33:27,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548402474] [2023-08-30 19:33:27,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:33:27,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 19:33:27,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:33:27,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 19:33:27,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-08-30 19:33:27,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-30 19:33:28,003 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 257 transitions, 2395 flow. Second operand has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 states have internal predecessors, (1197), 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 19:33:28,004 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:33:28,004 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-30 19:33:28,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:33:32,631 INFO L130 PetriNetUnfolder]: 20882/39316 cut-off events. [2023-08-30 19:33:32,631 INFO L131 PetriNetUnfolder]: For 134764/136909 co-relation queries the response was YES. [2023-08-30 19:33:32,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159052 conditions, 39316 events. 20882/39316 cut-off events. For 134764/136909 co-relation queries the response was YES. Maximal size of possible extension queue 1170. Compared 363365 event pairs, 6541 based on Foata normal form. 524/39208 useless extension candidates. Maximal degree in co-relation 158754. Up to 19860 conditions per place. [2023-08-30 19:33:33,019 INFO L137 encePairwiseOnDemand]: 247/255 looper letters, 277 selfloop transitions, 75 changer transitions 1/416 dead transitions. [2023-08-30 19:33:33,019 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 416 transitions, 4380 flow [2023-08-30 19:33:33,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-30 19:33:33,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-30 19:33:33,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 937 transitions. [2023-08-30 19:33:33,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5249299719887955 [2023-08-30 19:33:33,024 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 937 transitions. [2023-08-30 19:33:33,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 937 transitions. [2023-08-30 19:33:33,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:33:33,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 937 transitions. [2023-08-30 19:33:33,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 133.85714285714286) internal successors, (937), 7 states have internal predecessors, (937), 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 19:33:33,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 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 19:33:33,029 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 255.0) internal successors, (2040), 8 states have internal predecessors, (2040), 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 19:33:33,029 INFO L175 Difference]: Start difference. First operand has 158 places, 257 transitions, 2395 flow. Second operand 7 states and 937 transitions. [2023-08-30 19:33:33,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 416 transitions, 4380 flow [2023-08-30 19:33:34,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 416 transitions, 4341 flow, removed 12 selfloop flow, removed 4 redundant places. [2023-08-30 19:33:34,547 INFO L231 Difference]: Finished difference. Result has 162 places, 298 transitions, 3043 flow [2023-08-30 19:33:34,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3043, PETRI_PLACES=162, PETRI_TRANSITIONS=298} [2023-08-30 19:33:34,547 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 103 predicate places. [2023-08-30 19:33:34,547 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 298 transitions, 3043 flow [2023-08-30 19:33:34,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 119.7) internal successors, (1197), 10 states have internal predecessors, (1197), 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 19:33:34,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:33:34,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:33:34,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-30 19:33:34,548 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 19:33:34,549 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:33:34,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1525849507, now seen corresponding path program 13 times [2023-08-30 19:33:34,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:33:34,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669914307] [2023-08-30 19:33:34,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:33:34,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:33:34,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:33:35,060 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 19:33:35,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:33:35,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669914307] [2023-08-30 19:33:35,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669914307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:33:35,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:33:35,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:33:35,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378451526] [2023-08-30 19:33:35,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:33:35,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:33:35,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:33:35,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:33:35,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:33:35,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 255 [2023-08-30 19:33:35,112 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 298 transitions, 3043 flow. Second operand has 8 states, 8 states have (on average 125.25) internal successors, (1002), 8 states have internal predecessors, (1002), 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 19:33:35,112 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:33:35,113 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 255 [2023-08-30 19:33:35,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:33:40,691 INFO L130 PetriNetUnfolder]: 23740/45023 cut-off events. [2023-08-30 19:33:40,691 INFO L131 PetriNetUnfolder]: For 197890/201665 co-relation queries the response was YES. [2023-08-30 19:33:41,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185899 conditions, 45023 events. 23740/45023 cut-off events. For 197890/201665 co-relation queries the response was YES. Maximal size of possible extension queue 1421. Compared 432995 event pairs, 9002 based on Foata normal form. 941/44846 useless extension candidates. Maximal degree in co-relation 182024. Up to 24144 conditions per place. [2023-08-30 19:33:41,145 INFO L137 encePairwiseOnDemand]: 246/255 looper letters, 277 selfloop transitions, 51 changer transitions 36/472 dead transitions. [2023-08-30 19:33:41,145 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 472 transitions, 5045 flow [2023-08-30 19:33:41,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 19:33:41,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 19:33:41,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1239 transitions. [2023-08-30 19:33:41,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5398692810457516 [2023-08-30 19:33:41,148 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1239 transitions. [2023-08-30 19:33:41,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1239 transitions. [2023-08-30 19:33:41,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:33:41,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1239 transitions. [2023-08-30 19:33:41,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 137.66666666666666) internal successors, (1239), 9 states have internal predecessors, (1239), 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 19:33:41,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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 19:33:41,153 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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 19:33:41,153 INFO L175 Difference]: Start difference. First operand has 162 places, 298 transitions, 3043 flow. Second operand 9 states and 1239 transitions. [2023-08-30 19:33:41,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 472 transitions, 5045 flow [2023-08-30 19:33:43,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 472 transitions, 5037 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-30 19:33:43,463 INFO L231 Difference]: Finished difference. Result has 174 places, 331 transitions, 3515 flow [2023-08-30 19:33:43,464 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3041, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3515, PETRI_PLACES=174, PETRI_TRANSITIONS=331} [2023-08-30 19:33:43,464 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 115 predicate places. [2023-08-30 19:33:43,464 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 331 transitions, 3515 flow [2023-08-30 19:33:43,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 125.25) internal successors, (1002), 8 states have internal predecessors, (1002), 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 19:33:43,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:33:43,465 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:33:43,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-30 19:33:43,465 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 19:33:43,465 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:33:43,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1720285273, now seen corresponding path program 14 times [2023-08-30 19:33:43,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:33:43,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664834672] [2023-08-30 19:33:43,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:33:43,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:33:43,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:33:43,865 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 19:33:43,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:33:43,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664834672] [2023-08-30 19:33:43,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664834672] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:33:43,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:33:43,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:33:43,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364410420] [2023-08-30 19:33:43,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:33:43,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:33:43,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:33:43,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:33:43,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:33:43,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-08-30 19:33:43,963 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 331 transitions, 3515 flow. Second operand has 8 states, 8 states have (on average 123.375) internal successors, (987), 8 states have internal predecessors, (987), 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 19:33:43,963 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:33:43,963 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-08-30 19:33:43,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:33:49,741 INFO L130 PetriNetUnfolder]: 23009/43744 cut-off events. [2023-08-30 19:33:49,741 INFO L131 PetriNetUnfolder]: For 234067/237646 co-relation queries the response was YES. [2023-08-30 19:33:50,069 INFO L83 FinitePrefix]: Finished finitePrefix Result has 191446 conditions, 43744 events. 23009/43744 cut-off events. For 234067/237646 co-relation queries the response was YES. Maximal size of possible extension queue 1384. Compared 417951 event pairs, 10437 based on Foata normal form. 582/42862 useless extension candidates. Maximal degree in co-relation 187264. Up to 34534 conditions per place. [2023-08-30 19:33:50,173 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 231 selfloop transitions, 52 changer transitions 19/415 dead transitions. [2023-08-30 19:33:50,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 415 transitions, 4667 flow [2023-08-30 19:33:50,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 19:33:50,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 19:33:50,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1074 transitions. [2023-08-30 19:33:50,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264705882352941 [2023-08-30 19:33:50,176 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1074 transitions. [2023-08-30 19:33:50,176 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1074 transitions. [2023-08-30 19:33:50,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:33:50,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1074 transitions. [2023-08-30 19:33:50,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 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 19:33:50,181 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 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 19:33:50,181 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 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 19:33:50,181 INFO L175 Difference]: Start difference. First operand has 174 places, 331 transitions, 3515 flow. Second operand 8 states and 1074 transitions. [2023-08-30 19:33:50,181 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 415 transitions, 4667 flow [2023-08-30 19:33:52,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 415 transitions, 4607 flow, removed 26 selfloop flow, removed 1 redundant places. [2023-08-30 19:33:52,719 INFO L231 Difference]: Finished difference. Result has 182 places, 350 transitions, 3829 flow [2023-08-30 19:33:52,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3455, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3829, PETRI_PLACES=182, PETRI_TRANSITIONS=350} [2023-08-30 19:33:52,720 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 123 predicate places. [2023-08-30 19:33:52,720 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 350 transitions, 3829 flow [2023-08-30 19:33:52,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.375) internal successors, (987), 8 states have internal predecessors, (987), 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 19:33:52,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:33:52,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:33:52,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-30 19:33:52,721 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 19:33:52,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:33:52,722 INFO L85 PathProgramCache]: Analyzing trace with hash -2020719651, now seen corresponding path program 15 times [2023-08-30 19:33:52,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:33:52,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586706541] [2023-08-30 19:33:52,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:33:52,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:33:52,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:33:53,331 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 19:33:53,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:33:53,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586706541] [2023-08-30 19:33:53,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586706541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:33:53,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:33:53,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 19:33:53,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776300553] [2023-08-30 19:33:53,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:33:53,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 19:33:53,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:33:53,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 19:33:53,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2023-08-30 19:33:53,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 255 [2023-08-30 19:33:53,396 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 350 transitions, 3829 flow. Second operand has 10 states, 10 states have (on average 120.7) internal successors, (1207), 10 states have internal predecessors, (1207), 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 19:33:53,396 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:33:53,396 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 255 [2023-08-30 19:33:53,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:33:58,574 INFO L130 PetriNetUnfolder]: 23974/45149 cut-off events. [2023-08-30 19:33:58,574 INFO L131 PetriNetUnfolder]: For 264544/267858 co-relation queries the response was YES. [2023-08-30 19:33:59,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 204360 conditions, 45149 events. 23974/45149 cut-off events. For 264544/267858 co-relation queries the response was YES. Maximal size of possible extension queue 1388. Compared 427092 event pairs, 10848 based on Foata normal form. 362/44239 useless extension candidates. Maximal degree in co-relation 199885. Up to 35636 conditions per place. [2023-08-30 19:33:59,307 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 303 selfloop transitions, 63 changer transitions 16/455 dead transitions. [2023-08-30 19:33:59,308 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 455 transitions, 5476 flow [2023-08-30 19:33:59,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 19:33:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 19:33:59,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1065 transitions. [2023-08-30 19:33:59,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5220588235294118 [2023-08-30 19:33:59,310 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1065 transitions. [2023-08-30 19:33:59,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1065 transitions. [2023-08-30 19:33:59,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:33:59,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1065 transitions. [2023-08-30 19:33:59,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.125) internal successors, (1065), 8 states have internal predecessors, (1065), 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 19:33:59,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 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 19:33:59,315 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 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 19:33:59,315 INFO L175 Difference]: Start difference. First operand has 182 places, 350 transitions, 3829 flow. Second operand 8 states and 1065 transitions. [2023-08-30 19:33:59,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 455 transitions, 5476 flow [2023-08-30 19:34:02,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 455 transitions, 5395 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-08-30 19:34:02,608 INFO L231 Difference]: Finished difference. Result has 190 places, 371 transitions, 4312 flow [2023-08-30 19:34:02,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=3765, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4312, PETRI_PLACES=190, PETRI_TRANSITIONS=371} [2023-08-30 19:34:02,609 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 131 predicate places. [2023-08-30 19:34:02,609 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 371 transitions, 4312 flow [2023-08-30 19:34:02,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 120.7) internal successors, (1207), 10 states have internal predecessors, (1207), 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 19:34:02,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:34:02,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:34:02,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-30 19:34:02,610 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 19:34:02,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:34:02,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1474309577, now seen corresponding path program 16 times [2023-08-30 19:34:02,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:34:02,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623083564] [2023-08-30 19:34:02,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:34:02,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:34:02,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:34:03,215 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 19:34:03,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:34:03,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623083564] [2023-08-30 19:34:03,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623083564] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:34:03,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:34:03,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-30 19:34:03,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933599698] [2023-08-30 19:34:03,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:34:03,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-30 19:34:03,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:34:03,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-30 19:34:03,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2023-08-30 19:34:03,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-30 19:34:03,268 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 371 transitions, 4312 flow. Second operand has 13 states, 13 states have (on average 118.84615384615384) internal successors, (1545), 13 states have internal predecessors, (1545), 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 19:34:03,268 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:34:03,268 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-30 19:34:03,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:34:11,513 INFO L130 PetriNetUnfolder]: 30014/56121 cut-off events. [2023-08-30 19:34:11,514 INFO L131 PetriNetUnfolder]: For 354166/357332 co-relation queries the response was YES. [2023-08-30 19:34:12,419 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256085 conditions, 56121 events. 30014/56121 cut-off events. For 354166/357332 co-relation queries the response was YES. Maximal size of possible extension queue 1838. Compared 544626 event pairs, 7399 based on Foata normal form. 2005/57640 useless extension candidates. Maximal degree in co-relation 251966. Up to 15730 conditions per place. [2023-08-30 19:34:14,156 INFO L137 encePairwiseOnDemand]: 237/255 looper letters, 430 selfloop transitions, 282 changer transitions 61/836 dead transitions. [2023-08-30 19:34:14,156 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 836 transitions, 10311 flow [2023-08-30 19:34:14,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-30 19:34:14,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-30 19:34:14,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 3071 transitions. [2023-08-30 19:34:14,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.523614663256607 [2023-08-30 19:34:14,161 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 3071 transitions. [2023-08-30 19:34:14,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 3071 transitions. [2023-08-30 19:34:14,164 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:34:14,165 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 3071 transitions. [2023-08-30 19:34:14,168 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 133.52173913043478) internal successors, (3071), 23 states have internal predecessors, (3071), 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 19:34:14,176 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 255.0) internal successors, (6120), 24 states have internal predecessors, (6120), 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 19:34:14,177 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 255.0) internal successors, (6120), 24 states have internal predecessors, (6120), 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 19:34:14,177 INFO L175 Difference]: Start difference. First operand has 190 places, 371 transitions, 4312 flow. Second operand 23 states and 3071 transitions. [2023-08-30 19:34:14,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 836 transitions, 10311 flow [2023-08-30 19:34:18,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 836 transitions, 10197 flow, removed 57 selfloop flow, removed 0 redundant places. [2023-08-30 19:34:18,505 INFO L231 Difference]: Finished difference. Result has 227 places, 498 transitions, 7082 flow [2023-08-30 19:34:18,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=4003, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=7082, PETRI_PLACES=227, PETRI_TRANSITIONS=498} [2023-08-30 19:34:18,506 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 168 predicate places. [2023-08-30 19:34:18,506 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 498 transitions, 7082 flow [2023-08-30 19:34:18,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 118.84615384615384) internal successors, (1545), 13 states have internal predecessors, (1545), 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 19:34:18,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:34:18,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:34:18,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-30 19:34:18,507 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 19:34:18,507 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:34:18,507 INFO L85 PathProgramCache]: Analyzing trace with hash -1915283881, now seen corresponding path program 17 times [2023-08-30 19:34:18,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:34:18,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395516910] [2023-08-30 19:34:18,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:34:18,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:34:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:34:19,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-30 19:34:19,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:34:19,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395516910] [2023-08-30 19:34:19,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395516910] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:34:19,171 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:34:19,171 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-08-30 19:34:19,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640669717] [2023-08-30 19:34:19,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:34:19,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-30 19:34:19,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:34:19,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-30 19:34:19,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2023-08-30 19:34:19,277 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-08-30 19:34:19,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 498 transitions, 7082 flow. Second operand has 10 states, 10 states have (on average 122.6) internal successors, (1226), 10 states have internal predecessors, (1226), 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 19:34:19,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:34:19,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-08-30 19:34:19,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:34:28,292 INFO L130 PetriNetUnfolder]: 27575/52232 cut-off events. [2023-08-30 19:34:28,292 INFO L131 PetriNetUnfolder]: For 643836/649224 co-relation queries the response was YES. [2023-08-30 19:34:28,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284095 conditions, 52232 events. 27575/52232 cut-off events. For 643836/649224 co-relation queries the response was YES. Maximal size of possible extension queue 1836. Compared 511442 event pairs, 12395 based on Foata normal form. 790/51804 useless extension candidates. Maximal degree in co-relation 279442. Up to 40947 conditions per place. [2023-08-30 19:34:29,089 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 346 selfloop transitions, 74 changer transitions 43/596 dead transitions. [2023-08-30 19:34:29,089 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 596 transitions, 9055 flow [2023-08-30 19:34:29,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 19:34:29,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 19:34:29,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1199 transitions. [2023-08-30 19:34:29,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224400871459695 [2023-08-30 19:34:29,090 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1199 transitions. [2023-08-30 19:34:29,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1199 transitions. [2023-08-30 19:34:29,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:34:29,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1199 transitions. [2023-08-30 19:34:29,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.22222222222223) internal successors, (1199), 9 states have internal predecessors, (1199), 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 19:34:29,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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 19:34:29,094 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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 19:34:29,094 INFO L175 Difference]: Start difference. First operand has 227 places, 498 transitions, 7082 flow. Second operand 9 states and 1199 transitions. [2023-08-30 19:34:29,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 596 transitions, 9055 flow [2023-08-30 19:34:35,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 596 transitions, 8567 flow, removed 240 selfloop flow, removed 2 redundant places. [2023-08-30 19:34:35,764 INFO L231 Difference]: Finished difference. Result has 235 places, 502 transitions, 6922 flow [2023-08-30 19:34:35,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6678, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6922, PETRI_PLACES=235, PETRI_TRANSITIONS=502} [2023-08-30 19:34:35,765 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 176 predicate places. [2023-08-30 19:34:35,765 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 502 transitions, 6922 flow [2023-08-30 19:34:35,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 122.6) internal successors, (1226), 10 states have internal predecessors, (1226), 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 19:34:35,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:34:35,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:34:35,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-30 19:34:35,766 INFO L420 AbstractCegarLoop]: === Iteration 18 === 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 19:34:35,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:34:35,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1554493685, now seen corresponding path program 18 times [2023-08-30 19:34:35,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:34:35,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203874425] [2023-08-30 19:34:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:34:35,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:34:35,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:34:36,348 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 19:34:36,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:34:36,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203874425] [2023-08-30 19:34:36,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203874425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:34:36,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:34:36,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-30 19:34:36,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424225316] [2023-08-30 19:34:36,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:34:36,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-30 19:34:36,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:34:36,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-30 19:34:36,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-08-30 19:34:36,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 255 [2023-08-30 19:34:36,407 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 502 transitions, 6922 flow. Second operand has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 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 19:34:36,407 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:34:36,407 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 255 [2023-08-30 19:34:36,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:34:46,739 INFO L130 PetriNetUnfolder]: 31294/58066 cut-off events. [2023-08-30 19:34:46,739 INFO L131 PetriNetUnfolder]: For 651937/656847 co-relation queries the response was YES. [2023-08-30 19:34:47,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 307281 conditions, 58066 events. 31294/58066 cut-off events. For 651937/656847 co-relation queries the response was YES. Maximal size of possible extension queue 1915. Compared 561456 event pairs, 14157 based on Foata normal form. 482/57736 useless extension candidates. Maximal degree in co-relation 302800. Up to 41348 conditions per place. [2023-08-30 19:34:47,675 INFO L137 encePairwiseOnDemand]: 243/255 looper letters, 436 selfloop transitions, 80 changer transitions 60/639 dead transitions. [2023-08-30 19:34:47,675 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 639 transitions, 9533 flow [2023-08-30 19:34:47,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-30 19:34:47,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-30 19:34:47,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1201 transitions. [2023-08-30 19:34:47,676 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5233115468409586 [2023-08-30 19:34:47,676 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1201 transitions. [2023-08-30 19:34:47,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1201 transitions. [2023-08-30 19:34:47,677 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:34:47,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1201 transitions. [2023-08-30 19:34:47,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 133.44444444444446) internal successors, (1201), 9 states have internal predecessors, (1201), 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 19:34:47,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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 19:34:47,681 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 255.0) internal successors, (2550), 10 states have internal predecessors, (2550), 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 19:34:47,681 INFO L175 Difference]: Start difference. First operand has 235 places, 502 transitions, 6922 flow. Second operand 9 states and 1201 transitions. [2023-08-30 19:34:47,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 639 transitions, 9533 flow [2023-08-30 19:34:54,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 639 transitions, 9386 flow, removed 12 selfloop flow, removed 7 redundant places. [2023-08-30 19:34:54,190 INFO L231 Difference]: Finished difference. Result has 237 places, 497 transitions, 6942 flow [2023-08-30 19:34:54,190 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6785, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=502, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=6942, PETRI_PLACES=237, PETRI_TRANSITIONS=497} [2023-08-30 19:34:54,191 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 178 predicate places. [2023-08-30 19:34:54,191 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 497 transitions, 6942 flow [2023-08-30 19:34:54,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 119.36363636363636) internal successors, (1313), 11 states have internal predecessors, (1313), 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 19:34:54,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:34:54,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:34:54,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-30 19:34:54,192 INFO L420 AbstractCegarLoop]: === Iteration 19 === 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 19:34:54,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:34:54,193 INFO L85 PathProgramCache]: Analyzing trace with hash -879633153, now seen corresponding path program 19 times [2023-08-30 19:34:54,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:34:54,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145760094] [2023-08-30 19:34:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:34:54,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:34:54,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:34:54,908 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 19:34:54,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:34:54,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145760094] [2023-08-30 19:34:54,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145760094] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:34:54,909 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:34:54,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-30 19:34:54,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188996101] [2023-08-30 19:34:54,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:34:54,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-30 19:34:54,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:34:54,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-30 19:34:54,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-30 19:34:54,973 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 255 [2023-08-30 19:34:54,973 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 497 transitions, 6942 flow. Second operand has 8 states, 8 states have (on average 123.375) internal successors, (987), 8 states have internal predecessors, (987), 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 19:34:54,974 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:34:54,974 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 255 [2023-08-30 19:34:54,974 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-30 19:35:04,906 INFO L130 PetriNetUnfolder]: 26739/49928 cut-off events. [2023-08-30 19:35:04,906 INFO L131 PetriNetUnfolder]: For 588614/592093 co-relation queries the response was YES. [2023-08-30 19:35:05,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 264242 conditions, 49928 events. 26739/49928 cut-off events. For 588614/592093 co-relation queries the response was YES. Maximal size of possible extension queue 1864. Compared 483624 event pairs, 12541 based on Foata normal form. 1020/49944 useless extension candidates. Maximal degree in co-relation 263306. Up to 35357 conditions per place. [2023-08-30 19:35:05,765 INFO L137 encePairwiseOnDemand]: 244/255 looper letters, 353 selfloop transitions, 69 changer transitions 36/575 dead transitions. [2023-08-30 19:35:05,765 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 575 transitions, 8582 flow [2023-08-30 19:35:05,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-30 19:35:05,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-30 19:35:05,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1074 transitions. [2023-08-30 19:35:05,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5264705882352941 [2023-08-30 19:35:05,767 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1074 transitions. [2023-08-30 19:35:05,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1074 transitions. [2023-08-30 19:35:05,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-30 19:35:05,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1074 transitions. [2023-08-30 19:35:05,768 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 134.25) internal successors, (1074), 8 states have internal predecessors, (1074), 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 19:35:05,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 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 19:35:05,770 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 255.0) internal successors, (2295), 9 states have internal predecessors, (2295), 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 19:35:05,770 INFO L175 Difference]: Start difference. First operand has 237 places, 497 transitions, 6942 flow. Second operand 8 states and 1074 transitions. [2023-08-30 19:35:05,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 575 transitions, 8582 flow [2023-08-30 19:35:11,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 575 transitions, 8350 flow, removed 43 selfloop flow, removed 10 redundant places. [2023-08-30 19:35:11,075 INFO L231 Difference]: Finished difference. Result has 234 places, 474 transitions, 6689 flow [2023-08-30 19:35:11,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=255, PETRI_DIFFERENCE_MINUEND_FLOW=6544, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=411, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=6689, PETRI_PLACES=234, PETRI_TRANSITIONS=474} [2023-08-30 19:35:11,076 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 175 predicate places. [2023-08-30 19:35:11,076 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 474 transitions, 6689 flow [2023-08-30 19:35:11,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 123.375) internal successors, (987), 8 states have internal predecessors, (987), 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 19:35:11,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-30 19:35:11,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-30 19:35:11,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-30 19:35:11,077 INFO L420 AbstractCegarLoop]: === Iteration 20 === 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 19:35:11,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-30 19:35:11,077 INFO L85 PathProgramCache]: Analyzing trace with hash 491426649, now seen corresponding path program 20 times [2023-08-30 19:35:11,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-30 19:35:11,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128013015] [2023-08-30 19:35:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-30 19:35:11,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-30 19:35:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-30 19:35:11,675 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 19:35:11,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-30 19:35:11,676 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128013015] [2023-08-30 19:35:11,676 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128013015] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-30 19:35:11,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-30 19:35:11,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-30 19:35:11,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918027733] [2023-08-30 19:35:11,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-30 19:35:11,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-30 19:35:11,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-30 19:35:11,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-30 19:35:11,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-08-30 19:35:11,725 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 255 [2023-08-30 19:35:11,726 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 474 transitions, 6689 flow. Second operand has 6 states, 6 states have (on average 126.66666666666667) internal successors, (760), 6 states have internal predecessors, (760), 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 19:35:11,726 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-30 19:35:11,726 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 255 [2023-08-30 19:35:11,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand