./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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 ../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i -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 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:44:20,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:44:20,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:44:20,547 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:44:20,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:44:20,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:44:20,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:44:20,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:44:20,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:44:20,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:44:20,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:44:20,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:44:20,565 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:44:20,567 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:44:20,569 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:44:20,574 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:44:20,575 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:44:20,576 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:44:20,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:44:20,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:44:20,582 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:44:20,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:44:20,584 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:44:20,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:44:20,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:44:20,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:44:20,593 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:44:20,593 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:44:20,594 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:44:20,595 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:44:20,596 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:44:20,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:44:20,598 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:44:20,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:44:20,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:44:20,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:44:20,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:44:20,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:44:20,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:44:20,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:44:20,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:44:20,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:44:20,608 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:44:20,652 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:44:20,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:44:20,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:44:20,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:44:20,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:44:20,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:44:20,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:44:20,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:44:20,655 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:44:20,656 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:44:20,656 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:44:20,657 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:44:20,657 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:44:20,657 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:44:20,657 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:44:20,658 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:44:20,658 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:44:20,658 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:44:20,658 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:44:20,658 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:44:20,659 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:44:20,659 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:44:20,659 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:44:20,659 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:44:20,659 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:44:20,660 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:44:20,660 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:44:20,660 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:44:20,660 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:44:20,660 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:44:20,661 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:44:20,661 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:44:20,661 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:44:20,661 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57c8b47d74ada5c94291d16aafebbb644062493fff61510a323122bcd88ba5b1 [2022-07-21 08:44:20,977 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:44:21,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:44:21,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:44:21,004 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:44:21,005 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:44:21,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2022-07-21 08:44:21,066 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec8a4ee0/69e23b7eef4744d3be016c00ec326c57/FLAG27e4f2328 [2022-07-21 08:44:21,664 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:44:21,665 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i [2022-07-21 08:44:21,680 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec8a4ee0/69e23b7eef4744d3be016c00ec326c57/FLAG27e4f2328 [2022-07-21 08:44:22,048 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ec8a4ee0/69e23b7eef4744d3be016c00ec326c57 [2022-07-21 08:44:22,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:44:22,052 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:44:22,058 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:44:22,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:44:22,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:44:22,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:44:22" (1/1) ... [2022-07-21 08:44:22,062 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18417a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:22, skipping insertion in model container [2022-07-21 08:44:22,062 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:44:22" (1/1) ... [2022-07-21 08:44:22,068 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:44:22,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:44:22,281 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i[994,1007] [2022-07-21 08:44:22,509 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:44:22,517 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:44:22,527 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-wmm/safe019_power.opt.i[994,1007] [2022-07-21 08:44:22,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:44:22,606 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:44:22,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:22 WrapperNode [2022-07-21 08:44:22,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:44:22,608 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:44:22,608 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:44:22,608 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:44:22,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:22" (1/1) ... [2022-07-21 08:44:22,633 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:22" (1/1) ... [2022-07-21 08:44:22,661 INFO L137 Inliner]: procedures = 177, calls = 88, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 225 [2022-07-21 08:44:22,661 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:44:22,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:44:22,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:44:22,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:44:22,670 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:22" (1/1) ... [2022-07-21 08:44:22,670 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:22" (1/1) ... [2022-07-21 08:44:22,675 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:22" (1/1) ... [2022-07-21 08:44:22,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:22" (1/1) ... [2022-07-21 08:44:22,705 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:22" (1/1) ... [2022-07-21 08:44:22,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:22" (1/1) ... [2022-07-21 08:44:22,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:22" (1/1) ... [2022-07-21 08:44:22,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:44:22,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:44:22,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:44:22,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:44:22,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:22" (1/1) ... [2022-07-21 08:44:22,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:44:22,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:44:22,785 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) [2022-07-21 08:44:22,810 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 [2022-07-21 08:44:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:44:22,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:44:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-21 08:44:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:44:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:44:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:44:22,825 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-07-21 08:44:22,825 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-07-21 08:44:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-07-21 08:44:22,826 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-07-21 08:44:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-07-21 08:44:22,826 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-07-21 08:44:22,826 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2022-07-21 08:44:22,826 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2022-07-21 08:44:22,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:44:22,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-21 08:44:22,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:44:22,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:44:22,829 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:44:22,957 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:44:22,958 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:44:23,829 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:44:24,414 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:44:24,414 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 08:44:24,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:44:24 BoogieIcfgContainer [2022-07-21 08:44:24,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:44:24,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:44:24,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:44:24,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:44:24,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:44:22" (1/3) ... [2022-07-21 08:44:24,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17346f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:44:24, skipping insertion in model container [2022-07-21 08:44:24,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:44:22" (2/3) ... [2022-07-21 08:44:24,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17346f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:44:24, skipping insertion in model container [2022-07-21 08:44:24,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:44:24" (3/3) ... [2022-07-21 08:44:24,442 INFO L111 eAbstractionObserver]: Analyzing ICFG safe019_power.opt.i [2022-07-21 08:44:24,447 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:44:24,455 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:44:24,455 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-21 08:44:24,455 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:44:24,563 INFO L135 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-07-21 08:44:24,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 163 places, 152 transitions, 324 flow [2022-07-21 08:44:24,684 INFO L129 PetriNetUnfolder]: 2/148 cut-off events. [2022-07-21 08:44:24,684 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:44:24,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 148 events. 2/148 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 63 event pairs, 0 based on Foata normal form. 0/144 useless extension candidates. Maximal degree in co-relation 88. Up to 2 conditions per place. [2022-07-21 08:44:24,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 152 transitions, 324 flow [2022-07-21 08:44:24,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 148 transitions, 308 flow [2022-07-21 08:44:24,713 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:44:24,721 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@72a96416, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a3e2bac [2022-07-21 08:44:24,721 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-21 08:44:24,738 INFO L129 PetriNetUnfolder]: 0/82 cut-off events. [2022-07-21 08:44:24,739 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:44:24,739 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:24,740 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:24,740 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:24,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:24,745 INFO L85 PathProgramCache]: Analyzing trace with hash -397280163, now seen corresponding path program 1 times [2022-07-21 08:44:24,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:24,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29376085] [2022-07-21 08:44:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:24,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:25,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:25,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:25,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29376085] [2022-07-21 08:44:25,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29376085] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:25,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:25,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 08:44:25,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022532455] [2022-07-21 08:44:25,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:25,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:44:25,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:25,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:44:25,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:44:25,155 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 152 [2022-07-21 08:44:25,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 148 transitions, 308 flow. Second operand has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:25,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:25,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 152 [2022-07-21 08:44:25,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:25,578 INFO L129 PetriNetUnfolder]: 258/1462 cut-off events. [2022-07-21 08:44:25,578 INFO L130 PetriNetUnfolder]: For 27/27 co-relation queries the response was YES. [2022-07-21 08:44:25,584 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1915 conditions, 1462 events. 258/1462 cut-off events. For 27/27 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 11092 event pairs, 172 based on Foata normal form. 40/1403 useless extension candidates. Maximal degree in co-relation 1839. Up to 289 conditions per place. [2022-07-21 08:44:25,592 INFO L132 encePairwiseOnDemand]: 147/152 looper letters, 19 selfloop transitions, 2 changer transitions 0/152 dead transitions. [2022-07-21 08:44:25,592 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 152 transitions, 364 flow [2022-07-21 08:44:25,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:44:25,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:44:25,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2022-07-21 08:44:25,605 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9451754385964912 [2022-07-21 08:44:25,606 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2022-07-21 08:44:25,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2022-07-21 08:44:25,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:25,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2022-07-21 08:44:25,614 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) [2022-07-21 08:44:25,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:25,620 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:25,622 INFO L186 Difference]: Start difference. First operand has 159 places, 148 transitions, 308 flow. Second operand 3 states and 431 transitions. [2022-07-21 08:44:25,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 152 transitions, 364 flow [2022-07-21 08:44:25,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 152 transitions, 358 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-21 08:44:25,629 INFO L242 Difference]: Finished difference. Result has 155 places, 144 transitions, 300 flow [2022-07-21 08:44:25,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=300, PETRI_PLACES=155, PETRI_TRANSITIONS=144} [2022-07-21 08:44:25,634 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, -4 predicate places. [2022-07-21 08:44:25,634 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 144 transitions, 300 flow [2022-07-21 08:44:25,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.33333333333334) internal successors, (409), 3 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:25,635 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:25,635 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:25,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:44:25,636 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:25,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:25,637 INFO L85 PathProgramCache]: Analyzing trace with hash -331025959, now seen corresponding path program 1 times [2022-07-21 08:44:25,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:25,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442400597] [2022-07-21 08:44:25,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:25,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:25,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:25,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:25,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442400597] [2022-07-21 08:44:25,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442400597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:25,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:25,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:44:25,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430171049] [2022-07-21 08:44:25,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:25,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:44:25,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:25,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:44:25,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:44:25,896 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 152 [2022-07-21 08:44:25,897 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 144 transitions, 300 flow. Second operand has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:25,897 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:25,897 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 152 [2022-07-21 08:44:25,898 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:27,635 INFO L129 PetriNetUnfolder]: 3393/8110 cut-off events. [2022-07-21 08:44:27,636 INFO L130 PetriNetUnfolder]: For 447/447 co-relation queries the response was YES. [2022-07-21 08:44:27,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13398 conditions, 8110 events. 3393/8110 cut-off events. For 447/447 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 70770 event pairs, 708 based on Foata normal form. 0/7880 useless extension candidates. Maximal degree in co-relation 13323. Up to 2642 conditions per place. [2022-07-21 08:44:27,686 INFO L132 encePairwiseOnDemand]: 145/152 looper letters, 27 selfloop transitions, 3 changer transitions 71/210 dead transitions. [2022-07-21 08:44:27,687 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 210 transitions, 624 flow [2022-07-21 08:44:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:44:27,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:44:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1224 transitions. [2022-07-21 08:44:27,692 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8947368421052632 [2022-07-21 08:44:27,692 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1224 transitions. [2022-07-21 08:44:27,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1224 transitions. [2022-07-21 08:44:27,693 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:27,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1224 transitions. [2022-07-21 08:44:27,696 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 136.0) internal successors, (1224), 9 states have internal predecessors, (1224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:27,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:27,701 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:27,701 INFO L186 Difference]: Start difference. First operand has 155 places, 144 transitions, 300 flow. Second operand 9 states and 1224 transitions. [2022-07-21 08:44:27,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 210 transitions, 624 flow [2022-07-21 08:44:27,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 210 transitions, 606 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:44:27,706 INFO L242 Difference]: Finished difference. Result has 168 places, 132 transitions, 311 flow [2022-07-21 08:44:27,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=311, PETRI_PLACES=168, PETRI_TRANSITIONS=132} [2022-07-21 08:44:27,708 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 9 predicate places. [2022-07-21 08:44:27,708 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 132 transitions, 311 flow [2022-07-21 08:44:27,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:27,709 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:27,709 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:27,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:44:27,710 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:27,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:27,711 INFO L85 PathProgramCache]: Analyzing trace with hash -1071559942, now seen corresponding path program 1 times [2022-07-21 08:44:27,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:27,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812734665] [2022-07-21 08:44:27,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:27,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:27,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:27,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:27,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:27,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812734665] [2022-07-21 08:44:27,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812734665] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:27,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:27,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:27,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174502998] [2022-07-21 08:44:27,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:27,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:27,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:27,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:27,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:27,901 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2022-07-21 08:44:27,903 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 132 transitions, 311 flow. Second operand has 7 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:27,903 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:27,903 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2022-07-21 08:44:27,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:28,648 INFO L129 PetriNetUnfolder]: 1072/2211 cut-off events. [2022-07-21 08:44:28,649 INFO L130 PetriNetUnfolder]: For 1446/1458 co-relation queries the response was YES. [2022-07-21 08:44:28,660 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4885 conditions, 2211 events. 1072/2211 cut-off events. For 1446/1458 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 14037 event pairs, 314 based on Foata normal form. 48/2158 useless extension candidates. Maximal degree in co-relation 4802. Up to 831 conditions per place. [2022-07-21 08:44:28,727 INFO L132 encePairwiseOnDemand]: 145/152 looper letters, 22 selfloop transitions, 3 changer transitions 37/175 dead transitions. [2022-07-21 08:44:28,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 175 transitions, 541 flow [2022-07-21 08:44:28,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:44:28,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:44:28,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1344 transitions. [2022-07-21 08:44:28,731 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8842105263157894 [2022-07-21 08:44:28,731 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1344 transitions. [2022-07-21 08:44:28,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1344 transitions. [2022-07-21 08:44:28,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:28,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1344 transitions. [2022-07-21 08:44:28,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.4) internal successors, (1344), 10 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:28,739 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:28,740 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:28,740 INFO L186 Difference]: Start difference. First operand has 168 places, 132 transitions, 311 flow. Second operand 10 states and 1344 transitions. [2022-07-21 08:44:28,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 175 transitions, 541 flow [2022-07-21 08:44:28,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 175 transitions, 524 flow, removed 7 selfloop flow, removed 4 redundant places. [2022-07-21 08:44:28,753 INFO L242 Difference]: Finished difference. Result has 160 places, 132 transitions, 324 flow [2022-07-21 08:44:28,753 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=302, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=324, PETRI_PLACES=160, PETRI_TRANSITIONS=132} [2022-07-21 08:44:28,754 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 1 predicate places. [2022-07-21 08:44:28,754 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 132 transitions, 324 flow [2022-07-21 08:44:28,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 129.85714285714286) internal successors, (909), 7 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:28,755 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:28,755 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:28,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:44:28,756 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:28,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:28,756 INFO L85 PathProgramCache]: Analyzing trace with hash -787768344, now seen corresponding path program 1 times [2022-07-21 08:44:28,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:28,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722606069] [2022-07-21 08:44:28,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:28,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:28,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:28,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:28,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722606069] [2022-07-21 08:44:28,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722606069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:28,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:28,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:44:28,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476261884] [2022-07-21 08:44:28,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:28,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:44:28,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:28,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:44:28,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:44:28,975 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 152 [2022-07-21 08:44:28,976 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 132 transitions, 324 flow. Second operand has 6 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:28,976 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:28,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 152 [2022-07-21 08:44:28,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:30,104 INFO L129 PetriNetUnfolder]: 2607/4750 cut-off events. [2022-07-21 08:44:30,104 INFO L130 PetriNetUnfolder]: For 4187/4223 co-relation queries the response was YES. [2022-07-21 08:44:30,124 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11311 conditions, 4750 events. 2607/4750 cut-off events. For 4187/4223 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 31408 event pairs, 963 based on Foata normal form. 90/4693 useless extension candidates. Maximal degree in co-relation 11223. Up to 1500 conditions per place. [2022-07-21 08:44:30,148 INFO L132 encePairwiseOnDemand]: 146/152 looper letters, 32 selfloop transitions, 3 changer transitions 46/190 dead transitions. [2022-07-21 08:44:30,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 190 transitions, 674 flow [2022-07-21 08:44:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:44:30,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:44:30,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1216 transitions. [2022-07-21 08:44:30,152 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8888888888888888 [2022-07-21 08:44:30,153 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1216 transitions. [2022-07-21 08:44:30,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1216 transitions. [2022-07-21 08:44:30,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:30,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1216 transitions. [2022-07-21 08:44:30,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.11111111111111) internal successors, (1216), 9 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:30,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:30,164 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:30,164 INFO L186 Difference]: Start difference. First operand has 160 places, 132 transitions, 324 flow. Second operand 9 states and 1216 transitions. [2022-07-21 08:44:30,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 190 transitions, 674 flow [2022-07-21 08:44:30,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 190 transitions, 620 flow, removed 24 selfloop flow, removed 9 redundant places. [2022-07-21 08:44:30,205 INFO L242 Difference]: Finished difference. Result has 160 places, 132 transitions, 327 flow [2022-07-21 08:44:30,205 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=327, PETRI_PLACES=160, PETRI_TRANSITIONS=132} [2022-07-21 08:44:30,206 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 1 predicate places. [2022-07-21 08:44:30,207 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 132 transitions, 327 flow [2022-07-21 08:44:30,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 128.33333333333334) internal successors, (770), 6 states have internal predecessors, (770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:30,207 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:30,208 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:30,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:44:30,208 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:30,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:30,209 INFO L85 PathProgramCache]: Analyzing trace with hash -632451813, now seen corresponding path program 1 times [2022-07-21 08:44:30,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:30,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364655208] [2022-07-21 08:44:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:30,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:30,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:30,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:30,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364655208] [2022-07-21 08:44:30,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364655208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:30,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:30,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:44:30,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248197927] [2022-07-21 08:44:30,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:30,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:44:30,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:30,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:44:30,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:44:30,491 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 152 [2022-07-21 08:44:30,492 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 132 transitions, 327 flow. Second operand has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:30,493 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:30,493 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 152 [2022-07-21 08:44:30,493 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:31,406 INFO L129 PetriNetUnfolder]: 1620/3360 cut-off events. [2022-07-21 08:44:31,406 INFO L130 PetriNetUnfolder]: For 3894/3903 co-relation queries the response was YES. [2022-07-21 08:44:31,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7811 conditions, 3360 events. 1620/3360 cut-off events. For 3894/3903 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 23670 event pairs, 936 based on Foata normal form. 90/3249 useless extension candidates. Maximal degree in co-relation 7724. Up to 1251 conditions per place. [2022-07-21 08:44:31,440 INFO L132 encePairwiseOnDemand]: 146/152 looper letters, 26 selfloop transitions, 2 changer transitions 37/178 dead transitions. [2022-07-21 08:44:31,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 178 transitions, 586 flow [2022-07-21 08:44:31,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 08:44:31,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-21 08:44:31,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1219 transitions. [2022-07-21 08:44:31,444 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8910818713450293 [2022-07-21 08:44:31,444 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1219 transitions. [2022-07-21 08:44:31,444 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1219 transitions. [2022-07-21 08:44:31,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:31,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1219 transitions. [2022-07-21 08:44:31,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 135.44444444444446) internal successors, (1219), 9 states have internal predecessors, (1219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:31,450 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:31,451 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 152.0) internal successors, (1520), 10 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:31,451 INFO L186 Difference]: Start difference. First operand has 160 places, 132 transitions, 327 flow. Second operand 9 states and 1219 transitions. [2022-07-21 08:44:31,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 178 transitions, 586 flow [2022-07-21 08:44:31,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 178 transitions, 549 flow, removed 17 selfloop flow, removed 7 redundant places. [2022-07-21 08:44:31,478 INFO L242 Difference]: Finished difference. Result has 162 places, 132 transitions, 326 flow [2022-07-21 08:44:31,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=306, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=326, PETRI_PLACES=162, PETRI_TRANSITIONS=132} [2022-07-21 08:44:31,480 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 3 predicate places. [2022-07-21 08:44:31,481 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 132 transitions, 326 flow [2022-07-21 08:44:31,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 130.16666666666666) internal successors, (781), 6 states have internal predecessors, (781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:31,481 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:31,482 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:31,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:44:31,482 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:31,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:31,483 INFO L85 PathProgramCache]: Analyzing trace with hash 638703164, now seen corresponding path program 1 times [2022-07-21 08:44:31,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:31,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746268300] [2022-07-21 08:44:31,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:31,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:31,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:31,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:31,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:31,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746268300] [2022-07-21 08:44:31,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746268300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:31,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:31,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:31,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030029994] [2022-07-21 08:44:31,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:31,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:31,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:31,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:31,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:31,673 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 152 [2022-07-21 08:44:31,674 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 132 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:31,674 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:31,674 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 152 [2022-07-21 08:44:31,674 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:32,702 INFO L129 PetriNetUnfolder]: 2220/4354 cut-off events. [2022-07-21 08:44:32,703 INFO L130 PetriNetUnfolder]: For 4131/4155 co-relation queries the response was YES. [2022-07-21 08:44:32,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10262 conditions, 4354 events. 2220/4354 cut-off events. For 4131/4155 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 30828 event pairs, 414 based on Foata normal form. 60/4219 useless extension candidates. Maximal degree in co-relation 10172. Up to 1563 conditions per place. [2022-07-21 08:44:32,730 INFO L132 encePairwiseOnDemand]: 143/152 looper letters, 32 selfloop transitions, 5 changer transitions 26/171 dead transitions. [2022-07-21 08:44:32,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 171 transitions, 601 flow [2022-07-21 08:44:32,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 08:44:32,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-21 08:44:32,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 939 transitions. [2022-07-21 08:44:32,738 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8825187969924813 [2022-07-21 08:44:32,738 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 939 transitions. [2022-07-21 08:44:32,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 939 transitions. [2022-07-21 08:44:32,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:32,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 939 transitions. [2022-07-21 08:44:32,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 134.14285714285714) internal successors, (939), 7 states have internal predecessors, (939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:32,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:32,743 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 152.0) internal successors, (1216), 8 states have internal predecessors, (1216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:32,743 INFO L186 Difference]: Start difference. First operand has 162 places, 132 transitions, 326 flow. Second operand 7 states and 939 transitions. [2022-07-21 08:44:32,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 171 transitions, 601 flow [2022-07-21 08:44:32,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 171 transitions, 575 flow, removed 10 selfloop flow, removed 8 redundant places. [2022-07-21 08:44:32,759 INFO L242 Difference]: Finished difference. Result has 158 places, 132 transitions, 333 flow [2022-07-21 08:44:32,759 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=333, PETRI_PLACES=158, PETRI_TRANSITIONS=132} [2022-07-21 08:44:32,760 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, -1 predicate places. [2022-07-21 08:44:32,760 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 132 transitions, 333 flow [2022-07-21 08:44:32,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.28571428571429) internal successors, (891), 7 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:32,761 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:32,761 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:32,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:44:32,761 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:32,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:32,762 INFO L85 PathProgramCache]: Analyzing trace with hash -72517056, now seen corresponding path program 2 times [2022-07-21 08:44:32,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:32,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689257865] [2022-07-21 08:44:32,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:32,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:32,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:32,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:32,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689257865] [2022-07-21 08:44:32,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689257865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:32,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:32,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 08:44:32,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784405021] [2022-07-21 08:44:32,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:32,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 08:44:32,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:32,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 08:44:32,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 08:44:32,916 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 152 [2022-07-21 08:44:32,917 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 132 transitions, 333 flow. Second operand has 6 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:32,917 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:32,917 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 152 [2022-07-21 08:44:32,918 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:34,649 INFO L129 PetriNetUnfolder]: 7660/13043 cut-off events. [2022-07-21 08:44:34,650 INFO L130 PetriNetUnfolder]: For 2562/2602 co-relation queries the response was YES. [2022-07-21 08:44:34,694 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26178 conditions, 13043 events. 7660/13043 cut-off events. For 2562/2602 co-relation queries the response was YES. Maximal size of possible extension queue 751. Compared 98456 event pairs, 358 based on Foata normal form. 0/12678 useless extension candidates. Maximal degree in co-relation 26089. Up to 4663 conditions per place. [2022-07-21 08:44:34,727 INFO L132 encePairwiseOnDemand]: 141/152 looper letters, 38 selfloop transitions, 7 changer transitions 60/213 dead transitions. [2022-07-21 08:44:34,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 213 transitions, 716 flow [2022-07-21 08:44:34,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:44:34,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:44:34,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1347 transitions. [2022-07-21 08:44:34,732 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8861842105263158 [2022-07-21 08:44:34,732 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1347 transitions. [2022-07-21 08:44:34,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1347 transitions. [2022-07-21 08:44:34,733 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:34,733 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1347 transitions. [2022-07-21 08:44:34,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.7) internal successors, (1347), 10 states have internal predecessors, (1347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:34,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:34,741 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:34,741 INFO L186 Difference]: Start difference. First operand has 158 places, 132 transitions, 333 flow. Second operand 10 states and 1347 transitions. [2022-07-21 08:44:34,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 213 transitions, 716 flow [2022-07-21 08:44:34,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 213 transitions, 698 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-07-21 08:44:34,763 INFO L242 Difference]: Finished difference. Result has 164 places, 135 transitions, 381 flow [2022-07-21 08:44:34,763 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=315, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=381, PETRI_PLACES=164, PETRI_TRANSITIONS=135} [2022-07-21 08:44:34,764 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 5 predicate places. [2022-07-21 08:44:34,764 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 135 transitions, 381 flow [2022-07-21 08:44:34,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.33333333333333) internal successors, (758), 6 states have internal predecessors, (758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:34,765 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:34,765 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:34,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:44:34,766 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:34,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:34,766 INFO L85 PathProgramCache]: Analyzing trace with hash -301669039, now seen corresponding path program 1 times [2022-07-21 08:44:34,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:34,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207574206] [2022-07-21 08:44:34,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:34,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:34,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:35,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:35,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:35,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207574206] [2022-07-21 08:44:35,483 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207574206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:35,483 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:35,483 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-21 08:44:35,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166748305] [2022-07-21 08:44:35,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:35,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-21 08:44:35,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:35,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-21 08:44:35,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2022-07-21 08:44:35,486 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 152 [2022-07-21 08:44:35,488 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 135 transitions, 381 flow. Second operand has 17 states, 17 states have (on average 111.0) internal successors, (1887), 17 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:35,488 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:35,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 152 [2022-07-21 08:44:35,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:37,238 INFO L129 PetriNetUnfolder]: 2333/5843 cut-off events. [2022-07-21 08:44:37,238 INFO L130 PetriNetUnfolder]: For 4782/5093 co-relation queries the response was YES. [2022-07-21 08:44:37,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14237 conditions, 5843 events. 2333/5843 cut-off events. For 4782/5093 co-relation queries the response was YES. Maximal size of possible extension queue 295. Compared 52463 event pairs, 1319 based on Foata normal form. 39/5557 useless extension candidates. Maximal degree in co-relation 14129. Up to 1740 conditions per place. [2022-07-21 08:44:37,283 INFO L132 encePairwiseOnDemand]: 133/152 looper letters, 76 selfloop transitions, 34 changer transitions 0/207 dead transitions. [2022-07-21 08:44:37,283 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 207 transitions, 809 flow [2022-07-21 08:44:37,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 08:44:37,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-21 08:44:37,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2620 transitions. [2022-07-21 08:44:37,290 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7494279176201373 [2022-07-21 08:44:37,290 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2620 transitions. [2022-07-21 08:44:37,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2620 transitions. [2022-07-21 08:44:37,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:37,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2620 transitions. [2022-07-21 08:44:37,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 113.91304347826087) internal successors, (2620), 23 states have internal predecessors, (2620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:37,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:37,305 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:37,305 INFO L186 Difference]: Start difference. First operand has 164 places, 135 transitions, 381 flow. Second operand 23 states and 2620 transitions. [2022-07-21 08:44:37,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 207 transitions, 809 flow [2022-07-21 08:44:37,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 207 transitions, 794 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-07-21 08:44:37,327 INFO L242 Difference]: Finished difference. Result has 188 places, 159 transitions, 602 flow [2022-07-21 08:44:37,328 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=602, PETRI_PLACES=188, PETRI_TRANSITIONS=159} [2022-07-21 08:44:37,329 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 29 predicate places. [2022-07-21 08:44:37,329 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 159 transitions, 602 flow [2022-07-21 08:44:37,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 111.0) internal successors, (1887), 17 states have internal predecessors, (1887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:37,330 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:37,330 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:37,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:44:37,330 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:37,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:37,331 INFO L85 PathProgramCache]: Analyzing trace with hash -850925097, now seen corresponding path program 2 times [2022-07-21 08:44:37,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:37,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502197182] [2022-07-21 08:44:37,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:37,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:37,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:37,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:37,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:37,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502197182] [2022-07-21 08:44:37,619 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502197182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:37,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:37,619 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 08:44:37,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060301308] [2022-07-21 08:44:37,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:37,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 08:44:37,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:37,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 08:44:37,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-21 08:44:37,621 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 152 [2022-07-21 08:44:37,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 159 transitions, 602 flow. Second operand has 13 states, 13 states have (on average 116.23076923076923) internal successors, (1511), 13 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:37,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:37,623 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 152 [2022-07-21 08:44:37,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:39,194 INFO L129 PetriNetUnfolder]: 2791/6836 cut-off events. [2022-07-21 08:44:39,195 INFO L130 PetriNetUnfolder]: For 16571/16951 co-relation queries the response was YES. [2022-07-21 08:44:39,263 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22105 conditions, 6836 events. 2791/6836 cut-off events. For 16571/16951 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 63249 event pairs, 1461 based on Foata normal form. 60/6499 useless extension candidates. Maximal degree in co-relation 21984. Up to 2009 conditions per place. [2022-07-21 08:44:39,303 INFO L132 encePairwiseOnDemand]: 136/152 looper letters, 105 selfloop transitions, 71 changer transitions 6/284 dead transitions. [2022-07-21 08:44:39,303 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 284 transitions, 1811 flow [2022-07-21 08:44:39,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-21 08:44:39,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-21 08:44:39,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2767 transitions. [2022-07-21 08:44:39,311 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7914759725400458 [2022-07-21 08:44:39,311 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2767 transitions. [2022-07-21 08:44:39,311 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2767 transitions. [2022-07-21 08:44:39,313 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:39,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2767 transitions. [2022-07-21 08:44:39,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 120.30434782608695) internal successors, (2767), 23 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:39,327 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:39,329 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 152.0) internal successors, (3648), 24 states have internal predecessors, (3648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:39,329 INFO L186 Difference]: Start difference. First operand has 188 places, 159 transitions, 602 flow. Second operand 23 states and 2767 transitions. [2022-07-21 08:44:39,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 284 transitions, 1811 flow [2022-07-21 08:44:39,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 284 transitions, 1764 flow, removed 8 selfloop flow, removed 9 redundant places. [2022-07-21 08:44:39,393 INFO L242 Difference]: Finished difference. Result has 218 places, 233 transitions, 1412 flow [2022-07-21 08:44:39,394 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1412, PETRI_PLACES=218, PETRI_TRANSITIONS=233} [2022-07-21 08:44:39,395 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 59 predicate places. [2022-07-21 08:44:39,396 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 233 transitions, 1412 flow [2022-07-21 08:44:39,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 116.23076923076923) internal successors, (1511), 13 states have internal predecessors, (1511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:39,397 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:39,397 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:39,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 08:44:39,397 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:39,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:39,398 INFO L85 PathProgramCache]: Analyzing trace with hash -543311883, now seen corresponding path program 3 times [2022-07-21 08:44:39,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:39,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689645587] [2022-07-21 08:44:39,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:39,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:40,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:40,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:40,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689645587] [2022-07-21 08:44:40,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689645587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:40,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:40,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-21 08:44:40,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595117015] [2022-07-21 08:44:40,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:40,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-21 08:44:40,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:40,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-21 08:44:40,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-07-21 08:44:40,104 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 96 out of 152 [2022-07-21 08:44:40,107 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 233 transitions, 1412 flow. Second operand has 20 states, 20 states have (on average 97.95) internal successors, (1959), 20 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:40,107 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:40,107 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 96 of 152 [2022-07-21 08:44:40,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:42,730 INFO L129 PetriNetUnfolder]: 3172/7951 cut-off events. [2022-07-21 08:44:42,731 INFO L130 PetriNetUnfolder]: For 38525/39258 co-relation queries the response was YES. [2022-07-21 08:44:42,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30411 conditions, 7951 events. 3172/7951 cut-off events. For 38525/39258 co-relation queries the response was YES. Maximal size of possible extension queue 445. Compared 76289 event pairs, 1690 based on Foata normal form. 53/7516 useless extension candidates. Maximal degree in co-relation 30269. Up to 3240 conditions per place. [2022-07-21 08:44:42,838 INFO L132 encePairwiseOnDemand]: 130/152 looper letters, 150 selfloop transitions, 76 changer transitions 44/362 dead transitions. [2022-07-21 08:44:42,838 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 362 transitions, 3015 flow [2022-07-21 08:44:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-21 08:44:42,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-21 08:44:42,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2930 transitions. [2022-07-21 08:44:42,845 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6647005444646098 [2022-07-21 08:44:42,845 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2930 transitions. [2022-07-21 08:44:42,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2930 transitions. [2022-07-21 08:44:42,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:42,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2930 transitions. [2022-07-21 08:44:42,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 101.03448275862068) internal successors, (2930), 29 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:42,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 152.0) internal successors, (4560), 30 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:42,860 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 152.0) internal successors, (4560), 30 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:42,861 INFO L186 Difference]: Start difference. First operand has 218 places, 233 transitions, 1412 flow. Second operand 29 states and 2930 transitions. [2022-07-21 08:44:42,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 362 transitions, 3015 flow [2022-07-21 08:44:43,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 362 transitions, 2772 flow, removed 118 selfloop flow, removed 4 redundant places. [2022-07-21 08:44:43,051 INFO L242 Difference]: Finished difference. Result has 257 places, 297 transitions, 1978 flow [2022-07-21 08:44:43,051 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1183, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1978, PETRI_PLACES=257, PETRI_TRANSITIONS=297} [2022-07-21 08:44:43,052 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 98 predicate places. [2022-07-21 08:44:43,052 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 297 transitions, 1978 flow [2022-07-21 08:44:43,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 97.95) internal successors, (1959), 20 states have internal predecessors, (1959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:43,053 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:43,053 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:43,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 08:44:43,053 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:43,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:43,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1590066825, now seen corresponding path program 1 times [2022-07-21 08:44:43,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:43,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9026840] [2022-07-21 08:44:43,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:43,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:43,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:43,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:43,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9026840] [2022-07-21 08:44:43,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9026840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:43,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:43,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:43,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632216151] [2022-07-21 08:44:43,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:43,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:43,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:43,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:43,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:43,196 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 152 [2022-07-21 08:44:43,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 297 transitions, 1978 flow. Second operand has 7 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:43,197 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:43,197 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 152 [2022-07-21 08:44:43,197 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:44,891 INFO L129 PetriNetUnfolder]: 4905/9301 cut-off events. [2022-07-21 08:44:44,891 INFO L130 PetriNetUnfolder]: For 53819/54226 co-relation queries the response was YES. [2022-07-21 08:44:44,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 40682 conditions, 9301 events. 4905/9301 cut-off events. For 53819/54226 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 72010 event pairs, 149 based on Foata normal form. 289/9474 useless extension candidates. Maximal degree in co-relation 40539. Up to 2420 conditions per place. [2022-07-21 08:44:44,976 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 198 selfloop transitions, 11 changer transitions 234/566 dead transitions. [2022-07-21 08:44:44,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 566 transitions, 5487 flow [2022-07-21 08:44:44,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 08:44:44,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-21 08:44:44,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1345 transitions. [2022-07-21 08:44:44,979 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8848684210526315 [2022-07-21 08:44:44,979 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1345 transitions. [2022-07-21 08:44:44,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1345 transitions. [2022-07-21 08:44:44,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:44,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1345 transitions. [2022-07-21 08:44:44,982 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 134.5) internal successors, (1345), 10 states have internal predecessors, (1345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:44,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:44,985 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 152.0) internal successors, (1672), 11 states have internal predecessors, (1672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:44,985 INFO L186 Difference]: Start difference. First operand has 257 places, 297 transitions, 1978 flow. Second operand 10 states and 1345 transitions. [2022-07-21 08:44:44,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 566 transitions, 5487 flow [2022-07-21 08:44:45,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 566 transitions, 4794 flow, removed 293 selfloop flow, removed 17 redundant places. [2022-07-21 08:44:45,116 INFO L242 Difference]: Finished difference. Result has 249 places, 233 transitions, 1360 flow [2022-07-21 08:44:45,116 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1645, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1360, PETRI_PLACES=249, PETRI_TRANSITIONS=233} [2022-07-21 08:44:45,116 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 90 predicate places. [2022-07-21 08:44:45,116 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 233 transitions, 1360 flow [2022-07-21 08:44:45,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 126.28571428571429) internal successors, (884), 7 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:45,117 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:45,117 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:45,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 08:44:45,117 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:45,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:45,118 INFO L85 PathProgramCache]: Analyzing trace with hash 45302874, now seen corresponding path program 1 times [2022-07-21 08:44:45,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:45,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093917040] [2022-07-21 08:44:45,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:45,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:45,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:45,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:45,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:45,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093917040] [2022-07-21 08:44:45,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093917040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:45,966 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:45,966 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-21 08:44:45,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799311146] [2022-07-21 08:44:45,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:45,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 08:44:45,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:45,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 08:44:45,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2022-07-21 08:44:45,970 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 152 [2022-07-21 08:44:45,972 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 233 transitions, 1360 flow. Second operand has 23 states, 23 states have (on average 95.82608695652173) internal successors, (2204), 23 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:45,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:45,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 152 [2022-07-21 08:44:45,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:47,788 INFO L129 PetriNetUnfolder]: 1190/3664 cut-off events. [2022-07-21 08:44:47,788 INFO L130 PetriNetUnfolder]: For 21457/22116 co-relation queries the response was YES. [2022-07-21 08:44:47,814 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15576 conditions, 3664 events. 1190/3664 cut-off events. For 21457/22116 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 31425 event pairs, 510 based on Foata normal form. 105/3647 useless extension candidates. Maximal degree in co-relation 15420. Up to 1241 conditions per place. [2022-07-21 08:44:47,827 INFO L132 encePairwiseOnDemand]: 129/152 looper letters, 93 selfloop transitions, 80 changer transitions 28/295 dead transitions. [2022-07-21 08:44:47,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 295 transitions, 2340 flow [2022-07-21 08:44:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-21 08:44:47,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-07-21 08:44:47,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 3047 transitions. [2022-07-21 08:44:47,832 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6466468590831919 [2022-07-21 08:44:47,832 INFO L72 ComplementDD]: Start complementDD. Operand 31 states and 3047 transitions. [2022-07-21 08:44:47,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 3047 transitions. [2022-07-21 08:44:47,834 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:47,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 31 states and 3047 transitions. [2022-07-21 08:44:47,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 32 states, 31 states have (on average 98.29032258064517) internal successors, (3047), 31 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:47,845 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:47,846 INFO L81 ComplementDD]: Finished complementDD. Result has 32 states, 32 states have (on average 152.0) internal successors, (4864), 32 states have internal predecessors, (4864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:47,846 INFO L186 Difference]: Start difference. First operand has 249 places, 233 transitions, 1360 flow. Second operand 31 states and 3047 transitions. [2022-07-21 08:44:47,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 295 transitions, 2340 flow [2022-07-21 08:44:47,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 295 transitions, 2139 flow, removed 91 selfloop flow, removed 27 redundant places. [2022-07-21 08:44:47,917 INFO L242 Difference]: Finished difference. Result has 235 places, 252 transitions, 1625 flow [2022-07-21 08:44:47,917 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1625, PETRI_PLACES=235, PETRI_TRANSITIONS=252} [2022-07-21 08:44:47,918 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 76 predicate places. [2022-07-21 08:44:47,918 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 252 transitions, 1625 flow [2022-07-21 08:44:47,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 95.82608695652173) internal successors, (2204), 23 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:47,919 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:47,919 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:47,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 08:44:47,920 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:47,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:47,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1999348842, now seen corresponding path program 2 times [2022-07-21 08:44:47,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:47,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954770843] [2022-07-21 08:44:47,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:47,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:49,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:49,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:49,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954770843] [2022-07-21 08:44:49,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954770843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:49,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:49,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-21 08:44:49,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390155724] [2022-07-21 08:44:49,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:49,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 08:44:49,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:49,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 08:44:49,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=488, Unknown=0, NotChecked=0, Total=600 [2022-07-21 08:44:49,165 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 152 [2022-07-21 08:44:49,167 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 252 transitions, 1625 flow. Second operand has 25 states, 25 states have (on average 93.76) internal successors, (2344), 25 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:49,167 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:49,167 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 152 [2022-07-21 08:44:49,167 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:51,729 INFO L129 PetriNetUnfolder]: 1621/4947 cut-off events. [2022-07-21 08:44:51,730 INFO L130 PetriNetUnfolder]: For 22858/23294 co-relation queries the response was YES. [2022-07-21 08:44:51,773 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18783 conditions, 4947 events. 1621/4947 cut-off events. For 22858/23294 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 45839 event pairs, 573 based on Foata normal form. 130/4920 useless extension candidates. Maximal degree in co-relation 18632. Up to 1346 conditions per place. [2022-07-21 08:44:51,794 INFO L132 encePairwiseOnDemand]: 127/152 looper letters, 142 selfloop transitions, 129 changer transitions 0/363 dead transitions. [2022-07-21 08:44:51,795 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 363 transitions, 3322 flow [2022-07-21 08:44:51,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-21 08:44:51,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2022-07-21 08:44:51,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 3190 transitions. [2022-07-21 08:44:51,798 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6359649122807017 [2022-07-21 08:44:51,798 INFO L72 ComplementDD]: Start complementDD. Operand 33 states and 3190 transitions. [2022-07-21 08:44:51,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 33 states and 3190 transitions. [2022-07-21 08:44:51,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:51,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 33 states and 3190 transitions. [2022-07-21 08:44:51,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 34 states, 33 states have (on average 96.66666666666667) internal successors, (3190), 33 states have internal predecessors, (3190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:51,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:51,812 INFO L81 ComplementDD]: Finished complementDD. Result has 34 states, 34 states have (on average 152.0) internal successors, (5168), 34 states have internal predecessors, (5168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:51,812 INFO L186 Difference]: Start difference. First operand has 235 places, 252 transitions, 1625 flow. Second operand 33 states and 3190 transitions. [2022-07-21 08:44:51,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 363 transitions, 3322 flow [2022-07-21 08:44:51,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 363 transitions, 3134 flow, removed 61 selfloop flow, removed 24 redundant places. [2022-07-21 08:44:51,875 INFO L242 Difference]: Finished difference. Result has 251 places, 313 transitions, 2634 flow [2022-07-21 08:44:51,875 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=1509, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=2634, PETRI_PLACES=251, PETRI_TRANSITIONS=313} [2022-07-21 08:44:51,876 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 92 predicate places. [2022-07-21 08:44:51,876 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 313 transitions, 2634 flow [2022-07-21 08:44:51,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 93.76) internal successors, (2344), 25 states have internal predecessors, (2344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:51,877 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:51,877 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:51,877 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 08:44:51,877 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:51,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:51,878 INFO L85 PathProgramCache]: Analyzing trace with hash -614257416, now seen corresponding path program 3 times [2022-07-21 08:44:51,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:51,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622250673] [2022-07-21 08:44:51,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:51,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:51,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:52,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:52,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:52,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622250673] [2022-07-21 08:44:52,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622250673] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:52,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:52,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-21 08:44:52,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576336113] [2022-07-21 08:44:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:52,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-21 08:44:52,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-21 08:44:52,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2022-07-21 08:44:52,316 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 152 [2022-07-21 08:44:52,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 313 transitions, 2634 flow. Second operand has 16 states, 16 states have (on average 113.0625) internal successors, (1809), 16 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:52,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:52,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 152 [2022-07-21 08:44:52,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:54,138 INFO L129 PetriNetUnfolder]: 1861/5581 cut-off events. [2022-07-21 08:44:54,138 INFO L130 PetriNetUnfolder]: For 36912/37455 co-relation queries the response was YES. [2022-07-21 08:44:54,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23744 conditions, 5581 events. 1861/5581 cut-off events. For 36912/37455 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 53268 event pairs, 549 based on Foata normal form. 184/5594 useless extension candidates. Maximal degree in co-relation 23592. Up to 1538 conditions per place. [2022-07-21 08:44:54,217 INFO L132 encePairwiseOnDemand]: 135/152 looper letters, 190 selfloop transitions, 105 changer transitions 9/415 dead transitions. [2022-07-21 08:44:54,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 415 transitions, 4426 flow [2022-07-21 08:44:54,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:44:54,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:44:54,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2577 transitions. [2022-07-21 08:44:54,220 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7706339712918661 [2022-07-21 08:44:54,220 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2577 transitions. [2022-07-21 08:44:54,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2577 transitions. [2022-07-21 08:44:54,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:54,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2577 transitions. [2022-07-21 08:44:54,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 117.13636363636364) internal successors, (2577), 22 states have internal predecessors, (2577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:54,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:54,229 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 152.0) internal successors, (3496), 23 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:54,229 INFO L186 Difference]: Start difference. First operand has 251 places, 313 transitions, 2634 flow. Second operand 22 states and 2577 transitions. [2022-07-21 08:44:54,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 415 transitions, 4426 flow [2022-07-21 08:44:54,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 415 transitions, 4223 flow, removed 84 selfloop flow, removed 15 redundant places. [2022-07-21 08:44:54,349 INFO L242 Difference]: Finished difference. Result has 270 places, 342 transitions, 3290 flow [2022-07-21 08:44:54,349 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2477, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3290, PETRI_PLACES=270, PETRI_TRANSITIONS=342} [2022-07-21 08:44:54,350 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 111 predicate places. [2022-07-21 08:44:54,350 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 342 transitions, 3290 flow [2022-07-21 08:44:54,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 113.0625) internal successors, (1809), 16 states have internal predecessors, (1809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:54,351 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:54,351 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:54,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 08:44:54,351 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:54,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:54,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1146494990, now seen corresponding path program 1 times [2022-07-21 08:44:54,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:54,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468410768] [2022-07-21 08:44:54,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:54,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:54,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:54,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:54,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:54,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468410768] [2022-07-21 08:44:54,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468410768] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:54,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:54,528 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 08:44:54,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150134643] [2022-07-21 08:44:54,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:54,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 08:44:54,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:54,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 08:44:54,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-21 08:44:54,530 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 152 [2022-07-21 08:44:54,531 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 342 transitions, 3290 flow. Second operand has 7 states, 7 states have (on average 127.71428571428571) internal successors, (894), 7 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:54,531 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:54,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 152 [2022-07-21 08:44:54,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:56,390 INFO L129 PetriNetUnfolder]: 3668/10309 cut-off events. [2022-07-21 08:44:56,390 INFO L130 PetriNetUnfolder]: For 85032/85658 co-relation queries the response was YES. [2022-07-21 08:44:56,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47086 conditions, 10309 events. 3668/10309 cut-off events. For 85032/85658 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 107793 event pairs, 650 based on Foata normal form. 239/10245 useless extension candidates. Maximal degree in co-relation 46939. Up to 2031 conditions per place. [2022-07-21 08:44:56,570 INFO L132 encePairwiseOnDemand]: 145/152 looper letters, 538 selfloop transitions, 25 changer transitions 58/761 dead transitions. [2022-07-21 08:44:56,570 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 761 transitions, 10143 flow [2022-07-21 08:44:56,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 08:44:56,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-21 08:44:56,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1069 transitions. [2022-07-21 08:44:56,572 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8791118421052632 [2022-07-21 08:44:56,572 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1069 transitions. [2022-07-21 08:44:56,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1069 transitions. [2022-07-21 08:44:56,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:56,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1069 transitions. [2022-07-21 08:44:56,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 133.625) internal successors, (1069), 8 states have internal predecessors, (1069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:56,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:56,575 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 152.0) internal successors, (1368), 9 states have internal predecessors, (1368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:56,576 INFO L186 Difference]: Start difference. First operand has 270 places, 342 transitions, 3290 flow. Second operand 8 states and 1069 transitions. [2022-07-21 08:44:56,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 761 transitions, 10143 flow [2022-07-21 08:44:56,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 761 transitions, 9748 flow, removed 192 selfloop flow, removed 6 redundant places. [2022-07-21 08:44:56,924 INFO L242 Difference]: Finished difference. Result has 276 places, 363 transitions, 3560 flow [2022-07-21 08:44:56,925 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3167, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3560, PETRI_PLACES=276, PETRI_TRANSITIONS=363} [2022-07-21 08:44:56,925 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 117 predicate places. [2022-07-21 08:44:56,925 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 363 transitions, 3560 flow [2022-07-21 08:44:56,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 127.71428571428571) internal successors, (894), 7 states have internal predecessors, (894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:56,926 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:56,926 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:56,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 08:44:56,926 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:56,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:56,926 INFO L85 PathProgramCache]: Analyzing trace with hash -292902830, now seen corresponding path program 1 times [2022-07-21 08:44:56,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:56,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714901327] [2022-07-21 08:44:56,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:56,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:44:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:44:57,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:44:57,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714901327] [2022-07-21 08:44:57,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714901327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:44:57,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:44:57,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 08:44:57,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690180102] [2022-07-21 08:44:57,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:44:57,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 08:44:57,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:44:57,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 08:44:57,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-21 08:44:57,067 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 152 [2022-07-21 08:44:57,068 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 363 transitions, 3560 flow. Second operand has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:57,068 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:44:57,068 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 152 [2022-07-21 08:44:57,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:44:59,359 INFO L129 PetriNetUnfolder]: 5414/11252 cut-off events. [2022-07-21 08:44:59,359 INFO L130 PetriNetUnfolder]: For 106334/107456 co-relation queries the response was YES. [2022-07-21 08:44:59,460 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57524 conditions, 11252 events. 5414/11252 cut-off events. For 106334/107456 co-relation queries the response was YES. Maximal size of possible extension queue 627. Compared 100604 event pairs, 174 based on Foata normal form. 428/11557 useless extension candidates. Maximal degree in co-relation 57378. Up to 3099 conditions per place. [2022-07-21 08:44:59,480 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 294 selfloop transitions, 15 changer transitions 276/712 dead transitions. [2022-07-21 08:44:59,481 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 712 transitions, 9337 flow [2022-07-21 08:44:59,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:44:59,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:44:59,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1480 transitions. [2022-07-21 08:44:59,483 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8851674641148325 [2022-07-21 08:44:59,483 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1480 transitions. [2022-07-21 08:44:59,483 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1480 transitions. [2022-07-21 08:44:59,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:44:59,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1480 transitions. [2022-07-21 08:44:59,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 134.54545454545453) internal successors, (1480), 11 states have internal predecessors, (1480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:59,487 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:59,488 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:59,488 INFO L186 Difference]: Start difference. First operand has 276 places, 363 transitions, 3560 flow. Second operand 11 states and 1480 transitions. [2022-07-21 08:44:59,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 712 transitions, 9337 flow [2022-07-21 08:44:59,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 712 transitions, 9005 flow, removed 122 selfloop flow, removed 4 redundant places. [2022-07-21 08:44:59,743 INFO L242 Difference]: Finished difference. Result has 287 places, 284 transitions, 2453 flow [2022-07-21 08:44:59,743 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3042, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2453, PETRI_PLACES=287, PETRI_TRANSITIONS=284} [2022-07-21 08:44:59,744 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 128 predicate places. [2022-07-21 08:44:59,744 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 284 transitions, 2453 flow [2022-07-21 08:44:59,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 126.25) internal successors, (1010), 8 states have internal predecessors, (1010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:44:59,745 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:44:59,745 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:44:59,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 08:44:59,745 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:44:59,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:44:59,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1609935641, now seen corresponding path program 1 times [2022-07-21 08:44:59,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:44:59,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217622191] [2022-07-21 08:44:59,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:44:59,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:44:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:01,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:01,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:01,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217622191] [2022-07-21 08:45:01,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217622191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:01,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:01,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2022-07-21 08:45:01,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103568199] [2022-07-21 08:45:01,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:01,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-21 08:45:01,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:01,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-21 08:45:01,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2022-07-21 08:45:01,931 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 152 [2022-07-21 08:45:01,933 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 284 transitions, 2453 flow. Second operand has 36 states, 36 states have (on average 87.44444444444444) internal successors, (3148), 36 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:01,933 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:01,933 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 152 [2022-07-21 08:45:01,933 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:07,347 INFO L129 PetriNetUnfolder]: 2782/8417 cut-off events. [2022-07-21 08:45:07,347 INFO L130 PetriNetUnfolder]: For 55052/57707 co-relation queries the response was YES. [2022-07-21 08:45:07,461 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35270 conditions, 8417 events. 2782/8417 cut-off events. For 55052/57707 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 93211 event pairs, 568 based on Foata normal form. 522/8645 useless extension candidates. Maximal degree in co-relation 35098. Up to 2138 conditions per place. [2022-07-21 08:45:07,485 INFO L132 encePairwiseOnDemand]: 115/152 looper letters, 192 selfloop transitions, 153 changer transitions 85/521 dead transitions. [2022-07-21 08:45:07,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 521 transitions, 6013 flow [2022-07-21 08:45:07,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-21 08:45:07,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2022-07-21 08:45:07,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 5390 transitions. [2022-07-21 08:45:07,490 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5910087719298246 [2022-07-21 08:45:07,490 INFO L72 ComplementDD]: Start complementDD. Operand 60 states and 5390 transitions. [2022-07-21 08:45:07,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 5390 transitions. [2022-07-21 08:45:07,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:07,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 60 states and 5390 transitions. [2022-07-21 08:45:07,498 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 61 states, 60 states have (on average 89.83333333333333) internal successors, (5390), 60 states have internal predecessors, (5390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:07,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 61 states, 61 states have (on average 152.0) internal successors, (9272), 61 states have internal predecessors, (9272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:07,509 INFO L81 ComplementDD]: Finished complementDD. Result has 61 states, 61 states have (on average 152.0) internal successors, (9272), 61 states have internal predecessors, (9272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:07,509 INFO L186 Difference]: Start difference. First operand has 287 places, 284 transitions, 2453 flow. Second operand 60 states and 5390 transitions. [2022-07-21 08:45:07,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 521 transitions, 6013 flow [2022-07-21 08:45:07,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 521 transitions, 5786 flow, removed 84 selfloop flow, removed 32 redundant places. [2022-07-21 08:45:07,921 INFO L242 Difference]: Finished difference. Result has 312 places, 366 transitions, 3768 flow [2022-07-21 08:45:07,921 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=2311, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=200, PETRI_DIFFERENCE_SUBTRAHEND_STATES=60, PETRI_FLOW=3768, PETRI_PLACES=312, PETRI_TRANSITIONS=366} [2022-07-21 08:45:07,922 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 153 predicate places. [2022-07-21 08:45:07,922 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 366 transitions, 3768 flow [2022-07-21 08:45:07,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 87.44444444444444) internal successors, (3148), 36 states have internal predecessors, (3148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:07,923 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:07,923 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:07,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 08:45:07,923 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:45:07,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:07,924 INFO L85 PathProgramCache]: Analyzing trace with hash -337797617, now seen corresponding path program 2 times [2022-07-21 08:45:07,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:07,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929469804] [2022-07-21 08:45:07,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:07,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:08,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:08,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:08,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:08,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929469804] [2022-07-21 08:45:08,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929469804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:08,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:08,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2022-07-21 08:45:08,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894212392] [2022-07-21 08:45:08,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:08,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-21 08:45:08,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:08,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-21 08:45:08,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2022-07-21 08:45:08,980 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 152 [2022-07-21 08:45:08,981 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 366 transitions, 3768 flow. Second operand has 27 states, 27 states have (on average 93.66666666666667) internal successors, (2529), 27 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:08,981 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:08,981 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 152 [2022-07-21 08:45:08,981 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:11,530 INFO L129 PetriNetUnfolder]: 2732/8854 cut-off events. [2022-07-21 08:45:11,530 INFO L130 PetriNetUnfolder]: For 49987/52579 co-relation queries the response was YES. [2022-07-21 08:45:11,661 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34304 conditions, 8854 events. 2732/8854 cut-off events. For 49987/52579 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 103224 event pairs, 410 based on Foata normal form. 691/9155 useless extension candidates. Maximal degree in co-relation 34122. Up to 1838 conditions per place. [2022-07-21 08:45:11,692 INFO L132 encePairwiseOnDemand]: 126/152 looper letters, 140 selfloop transitions, 173 changer transitions 20/446 dead transitions. [2022-07-21 08:45:11,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 446 transitions, 5628 flow [2022-07-21 08:45:11,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-21 08:45:11,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-07-21 08:45:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3241 transitions. [2022-07-21 08:45:11,695 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6271284829721362 [2022-07-21 08:45:11,696 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3241 transitions. [2022-07-21 08:45:11,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3241 transitions. [2022-07-21 08:45:11,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:11,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3241 transitions. [2022-07-21 08:45:11,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 95.32352941176471) internal successors, (3241), 34 states have internal predecessors, (3241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:11,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:11,706 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 152.0) internal successors, (5320), 35 states have internal predecessors, (5320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:11,706 INFO L186 Difference]: Start difference. First operand has 312 places, 366 transitions, 3768 flow. Second operand 34 states and 3241 transitions. [2022-07-21 08:45:11,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 446 transitions, 5628 flow [2022-07-21 08:45:12,134 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 446 transitions, 5183 flow, removed 199 selfloop flow, removed 32 redundant places. [2022-07-21 08:45:12,140 INFO L242 Difference]: Finished difference. Result has 303 places, 407 transitions, 4693 flow [2022-07-21 08:45:12,141 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=3421, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4693, PETRI_PLACES=303, PETRI_TRANSITIONS=407} [2022-07-21 08:45:12,141 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 144 predicate places. [2022-07-21 08:45:12,141 INFO L495 AbstractCegarLoop]: Abstraction has has 303 places, 407 transitions, 4693 flow [2022-07-21 08:45:12,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 93.66666666666667) internal successors, (2529), 27 states have internal predecessors, (2529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:12,142 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:12,142 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:12,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 08:45:12,143 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:45:12,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:12,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1701761041, now seen corresponding path program 1 times [2022-07-21 08:45:12,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:12,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645757682] [2022-07-21 08:45:12,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:12,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:12,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:12,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645757682] [2022-07-21 08:45:12,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645757682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:12,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:12,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-21 08:45:12,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120124910] [2022-07-21 08:45:12,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:12,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-21 08:45:12,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:12,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-21 08:45:12,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-07-21 08:45:12,495 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 152 [2022-07-21 08:45:12,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 407 transitions, 4693 flow. Second operand has 14 states, 14 states have (on average 113.5) internal successors, (1589), 14 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:12,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:12,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 152 [2022-07-21 08:45:12,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:14,620 INFO L129 PetriNetUnfolder]: 3274/10896 cut-off events. [2022-07-21 08:45:14,620 INFO L130 PetriNetUnfolder]: For 64490/67895 co-relation queries the response was YES. [2022-07-21 08:45:14,860 INFO L84 FinitePrefix]: Finished finitePrefix Result has 42045 conditions, 10896 events. 3274/10896 cut-off events. For 64490/67895 co-relation queries the response was YES. Maximal size of possible extension queue 1095. Compared 132113 event pairs, 582 based on Foata normal form. 842/11232 useless extension candidates. Maximal degree in co-relation 41871. Up to 2055 conditions per place. [2022-07-21 08:45:14,900 INFO L132 encePairwiseOnDemand]: 139/152 looper letters, 188 selfloop transitions, 139 changer transitions 10/467 dead transitions. [2022-07-21 08:45:14,900 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 467 transitions, 6162 flow [2022-07-21 08:45:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:45:14,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:45:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1753 transitions. [2022-07-21 08:45:14,902 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.768859649122807 [2022-07-21 08:45:14,903 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1753 transitions. [2022-07-21 08:45:14,903 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1753 transitions. [2022-07-21 08:45:14,903 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:14,903 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1753 transitions. [2022-07-21 08:45:14,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 116.86666666666666) internal successors, (1753), 15 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:14,908 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:14,908 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:14,908 INFO L186 Difference]: Start difference. First operand has 303 places, 407 transitions, 4693 flow. Second operand 15 states and 1753 transitions. [2022-07-21 08:45:14,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 467 transitions, 6162 flow [2022-07-21 08:45:15,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 467 transitions, 5942 flow, removed 71 selfloop flow, removed 28 redundant places. [2022-07-21 08:45:15,345 INFO L242 Difference]: Finished difference. Result has 289 places, 422 transitions, 5293 flow [2022-07-21 08:45:15,346 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=4539, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=5293, PETRI_PLACES=289, PETRI_TRANSITIONS=422} [2022-07-21 08:45:15,347 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 130 predicate places. [2022-07-21 08:45:15,347 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 422 transitions, 5293 flow [2022-07-21 08:45:15,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 113.5) internal successors, (1589), 14 states have internal predecessors, (1589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:15,347 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:15,348 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:15,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 08:45:15,348 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:45:15,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:15,348 INFO L85 PathProgramCache]: Analyzing trace with hash 299073469, now seen corresponding path program 2 times [2022-07-21 08:45:15,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:15,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943093179] [2022-07-21 08:45:15,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:15,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:15,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:15,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:15,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:15,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943093179] [2022-07-21 08:45:15,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943093179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:15,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:15,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 08:45:15,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414722393] [2022-07-21 08:45:15,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:15,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 08:45:15,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:15,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 08:45:15,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-21 08:45:15,591 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 152 [2022-07-21 08:45:15,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 422 transitions, 5293 flow. Second operand has 11 states, 11 states have (on average 117.81818181818181) internal successors, (1296), 11 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:15,591 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:15,591 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 152 [2022-07-21 08:45:15,591 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:17,860 INFO L129 PetriNetUnfolder]: 4042/13730 cut-off events. [2022-07-21 08:45:17,860 INFO L130 PetriNetUnfolder]: For 84466/88906 co-relation queries the response was YES. [2022-07-21 08:45:18,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 52132 conditions, 13730 events. 4042/13730 cut-off events. For 84466/88906 co-relation queries the response was YES. Maximal size of possible extension queue 1366. Compared 174119 event pairs, 663 based on Foata normal form. 1019/14105 useless extension candidates. Maximal degree in co-relation 51972. Up to 2453 conditions per place. [2022-07-21 08:45:18,152 INFO L132 encePairwiseOnDemand]: 137/152 looper letters, 185 selfloop transitions, 145 changer transitions 18/482 dead transitions. [2022-07-21 08:45:18,152 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 293 places, 482 transitions, 6861 flow [2022-07-21 08:45:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 08:45:18,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-21 08:45:18,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1344 transitions. [2022-07-21 08:45:18,153 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8038277511961722 [2022-07-21 08:45:18,154 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1344 transitions. [2022-07-21 08:45:18,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1344 transitions. [2022-07-21 08:45:18,154 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:18,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1344 transitions. [2022-07-21 08:45:18,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 122.18181818181819) internal successors, (1344), 11 states have internal predecessors, (1344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:18,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:18,156 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 152.0) internal successors, (1824), 12 states have internal predecessors, (1824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:18,157 INFO L186 Difference]: Start difference. First operand has 289 places, 422 transitions, 5293 flow. Second operand 11 states and 1344 transitions. [2022-07-21 08:45:18,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 293 places, 482 transitions, 6861 flow [2022-07-21 08:45:18,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 482 transitions, 6694 flow, removed 27 selfloop flow, removed 8 redundant places. [2022-07-21 08:45:18,707 INFO L242 Difference]: Finished difference. Result has 292 places, 442 transitions, 6053 flow [2022-07-21 08:45:18,707 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=5150, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=422, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=282, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=6053, PETRI_PLACES=292, PETRI_TRANSITIONS=442} [2022-07-21 08:45:18,708 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2022-07-21 08:45:18,708 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 442 transitions, 6053 flow [2022-07-21 08:45:18,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 117.81818181818181) internal successors, (1296), 11 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:18,708 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:18,708 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:18,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-21 08:45:18,708 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:45:18,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:18,709 INFO L85 PathProgramCache]: Analyzing trace with hash 621395663, now seen corresponding path program 3 times [2022-07-21 08:45:18,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:18,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851225188] [2022-07-21 08:45:18,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:18,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:19,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:19,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:19,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851225188] [2022-07-21 08:45:19,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851225188] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:19,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:19,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-21 08:45:19,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098893877] [2022-07-21 08:45:19,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:19,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-21 08:45:19,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:19,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-21 08:45:19,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-21 08:45:19,122 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 152 [2022-07-21 08:45:19,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 442 transitions, 6053 flow. Second operand has 13 states, 13 states have (on average 114.61538461538461) internal successors, (1490), 13 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:19,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:19,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 152 [2022-07-21 08:45:19,123 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:21,924 INFO L129 PetriNetUnfolder]: 4663/16311 cut-off events. [2022-07-21 08:45:21,924 INFO L130 PetriNetUnfolder]: For 114086/119565 co-relation queries the response was YES. [2022-07-21 08:45:22,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63230 conditions, 16311 events. 4663/16311 cut-off events. For 114086/119565 co-relation queries the response was YES. Maximal size of possible extension queue 1605. Compared 214537 event pairs, 643 based on Foata normal form. 1187/16757 useless extension candidates. Maximal degree in co-relation 63065. Up to 3046 conditions per place. [2022-07-21 08:45:22,237 INFO L132 encePairwiseOnDemand]: 140/152 looper letters, 220 selfloop transitions, 149 changer transitions 15/515 dead transitions. [2022-07-21 08:45:22,237 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 302 places, 515 transitions, 7948 flow [2022-07-21 08:45:22,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:45:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:45:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1653 transitions. [2022-07-21 08:45:22,239 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7767857142857143 [2022-07-21 08:45:22,239 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1653 transitions. [2022-07-21 08:45:22,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1653 transitions. [2022-07-21 08:45:22,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:22,240 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1653 transitions. [2022-07-21 08:45:22,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 118.07142857142857) internal successors, (1653), 14 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:22,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:22,244 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 152.0) internal successors, (2280), 15 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:22,244 INFO L186 Difference]: Start difference. First operand has 292 places, 442 transitions, 6053 flow. Second operand 14 states and 1653 transitions. [2022-07-21 08:45:22,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 302 places, 515 transitions, 7948 flow [2022-07-21 08:45:23,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 515 transitions, 7817 flow, removed 62 selfloop flow, removed 6 redundant places. [2022-07-21 08:45:23,071 INFO L242 Difference]: Finished difference. Result has 305 places, 467 transitions, 7029 flow [2022-07-21 08:45:23,071 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=5962, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=7029, PETRI_PLACES=305, PETRI_TRANSITIONS=467} [2022-07-21 08:45:23,071 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 146 predicate places. [2022-07-21 08:45:23,071 INFO L495 AbstractCegarLoop]: Abstraction has has 305 places, 467 transitions, 7029 flow [2022-07-21 08:45:23,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 114.61538461538461) internal successors, (1490), 13 states have internal predecessors, (1490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:23,072 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:23,072 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:23,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-21 08:45:23,072 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:45:23,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:23,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1858266649, now seen corresponding path program 4 times [2022-07-21 08:45:23,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:23,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257559249] [2022-07-21 08:45:23,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:23,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:23,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:23,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:23,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257559249] [2022-07-21 08:45:23,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257559249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:23,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:23,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 08:45:23,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854687297] [2022-07-21 08:45:23,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:23,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 08:45:23,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:23,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 08:45:23,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-21 08:45:23,243 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 152 [2022-07-21 08:45:23,244 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 467 transitions, 7029 flow. Second operand has 9 states, 9 states have (on average 126.33333333333333) internal successors, (1137), 9 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:23,244 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:23,244 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 152 [2022-07-21 08:45:23,244 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:30,576 INFO L129 PetriNetUnfolder]: 13318/31315 cut-off events. [2022-07-21 08:45:30,576 INFO L130 PetriNetUnfolder]: For 507946/513514 co-relation queries the response was YES. [2022-07-21 08:45:31,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 178572 conditions, 31315 events. 13318/31315 cut-off events. For 507946/513514 co-relation queries the response was YES. Maximal size of possible extension queue 2681. Compared 379277 event pairs, 732 based on Foata normal form. 728/31074 useless extension candidates. Maximal degree in co-relation 178470. Up to 7625 conditions per place. [2022-07-21 08:45:31,236 INFO L132 encePairwiseOnDemand]: 142/152 looper letters, 607 selfloop transitions, 19 changer transitions 175/954 dead transitions. [2022-07-21 08:45:31,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 954 transitions, 19066 flow [2022-07-21 08:45:31,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 08:45:31,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-07-21 08:45:31,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1574 transitions. [2022-07-21 08:45:31,238 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8629385964912281 [2022-07-21 08:45:31,238 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1574 transitions. [2022-07-21 08:45:31,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1574 transitions. [2022-07-21 08:45:31,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:31,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1574 transitions. [2022-07-21 08:45:31,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 131.16666666666666) internal successors, (1574), 12 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,242 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 152.0) internal successors, (1976), 13 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:31,242 INFO L186 Difference]: Start difference. First operand has 305 places, 467 transitions, 7029 flow. Second operand 12 states and 1574 transitions. [2022-07-21 08:45:31,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 954 transitions, 19066 flow [2022-07-21 08:45:34,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 954 transitions, 17571 flow, removed 266 selfloop flow, removed 23 redundant places. [2022-07-21 08:45:34,430 INFO L242 Difference]: Finished difference. Result has 292 places, 438 transitions, 5981 flow [2022-07-21 08:45:34,431 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=6150, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=434, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=5981, PETRI_PLACES=292, PETRI_TRANSITIONS=438} [2022-07-21 08:45:34,431 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 133 predicate places. [2022-07-21 08:45:34,431 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 438 transitions, 5981 flow [2022-07-21 08:45:34,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 126.33333333333333) internal successors, (1137), 9 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:34,432 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:34,432 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:34,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-21 08:45:34,432 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:45:34,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:34,433 INFO L85 PathProgramCache]: Analyzing trace with hash 643668994, now seen corresponding path program 1 times [2022-07-21 08:45:34,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:34,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128789722] [2022-07-21 08:45:34,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:34,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:35,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:35,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:35,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128789722] [2022-07-21 08:45:35,062 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128789722] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:35,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:35,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-21 08:45:35,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980704618] [2022-07-21 08:45:35,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:35,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-21 08:45:35,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:35,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-21 08:45:35,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-07-21 08:45:35,066 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 152 [2022-07-21 08:45:35,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 438 transitions, 5981 flow. Second operand has 18 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:35,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:35,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 152 [2022-07-21 08:45:35,068 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:38,689 INFO L129 PetriNetUnfolder]: 5268/18266 cut-off events. [2022-07-21 08:45:38,689 INFO L130 PetriNetUnfolder]: For 104367/110509 co-relation queries the response was YES. [2022-07-21 08:45:38,871 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72013 conditions, 18266 events. 5268/18266 cut-off events. For 104367/110509 co-relation queries the response was YES. Maximal size of possible extension queue 2281. Compared 255351 event pairs, 466 based on Foata normal form. 544/17830 useless extension candidates. Maximal degree in co-relation 71853. Up to 3485 conditions per place. [2022-07-21 08:45:38,904 INFO L132 encePairwiseOnDemand]: 135/152 looper letters, 260 selfloop transitions, 160 changer transitions 18/558 dead transitions. [2022-07-21 08:45:38,904 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 558 transitions, 8882 flow [2022-07-21 08:45:38,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 08:45:38,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-21 08:45:38,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1587 transitions. [2022-07-21 08:45:38,908 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6960526315789474 [2022-07-21 08:45:38,908 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1587 transitions. [2022-07-21 08:45:38,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1587 transitions. [2022-07-21 08:45:38,908 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:38,908 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1587 transitions. [2022-07-21 08:45:38,910 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 105.8) internal successors, (1587), 15 states have internal predecessors, (1587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:38,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:38,912 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 152.0) internal successors, (2432), 16 states have internal predecessors, (2432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:38,912 INFO L186 Difference]: Start difference. First operand has 292 places, 438 transitions, 5981 flow. Second operand 15 states and 1587 transitions. [2022-07-21 08:45:38,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 558 transitions, 8882 flow [2022-07-21 08:45:40,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 558 transitions, 8002 flow, removed 395 selfloop flow, removed 22 redundant places. [2022-07-21 08:45:40,587 INFO L242 Difference]: Finished difference. Result has 286 places, 511 transitions, 7310 flow [2022-07-21 08:45:40,587 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=5393, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=7310, PETRI_PLACES=286, PETRI_TRANSITIONS=511} [2022-07-21 08:45:40,588 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 127 predicate places. [2022-07-21 08:45:40,588 INFO L495 AbstractCegarLoop]: Abstraction has has 286 places, 511 transitions, 7310 flow [2022-07-21 08:45:40,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 102.22222222222223) internal successors, (1840), 18 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:40,588 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:40,588 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:40,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-21 08:45:40,589 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:45:40,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:40,589 INFO L85 PathProgramCache]: Analyzing trace with hash 580088298, now seen corresponding path program 2 times [2022-07-21 08:45:40,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:40,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391448163] [2022-07-21 08:45:40,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:40,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:40,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:41,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:41,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:41,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391448163] [2022-07-21 08:45:41,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391448163] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:41,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:41,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-21 08:45:41,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150281874] [2022-07-21 08:45:41,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:41,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 08:45:41,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:41,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 08:45:41,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=465, Unknown=0, NotChecked=0, Total=552 [2022-07-21 08:45:41,749 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 152 [2022-07-21 08:45:41,751 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 511 transitions, 7310 flow. Second operand has 24 states, 24 states have (on average 91.08333333333333) internal successors, (2186), 24 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:41,751 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:41,751 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 152 [2022-07-21 08:45:41,751 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:47,206 INFO L129 PetriNetUnfolder]: 6747/24094 cut-off events. [2022-07-21 08:45:47,207 INFO L130 PetriNetUnfolder]: For 92667/99530 co-relation queries the response was YES. [2022-07-21 08:45:47,489 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67182 conditions, 24094 events. 6747/24094 cut-off events. For 92667/99530 co-relation queries the response was YES. Maximal size of possible extension queue 3082. Compared 354689 event pairs, 559 based on Foata normal form. 795/23524 useless extension candidates. Maximal degree in co-relation 67090. Up to 3928 conditions per place. [2022-07-21 08:45:47,522 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 268 selfloop transitions, 178 changer transitions 63/619 dead transitions. [2022-07-21 08:45:47,522 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 619 transitions, 9593 flow [2022-07-21 08:45:47,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-21 08:45:47,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-21 08:45:47,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2455 transitions. [2022-07-21 08:45:47,525 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6212044534412956 [2022-07-21 08:45:47,525 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2455 transitions. [2022-07-21 08:45:47,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2455 transitions. [2022-07-21 08:45:47,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:47,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2455 transitions. [2022-07-21 08:45:47,528 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 94.42307692307692) internal successors, (2455), 26 states have internal predecessors, (2455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:47,531 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:47,532 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 152.0) internal successors, (4104), 27 states have internal predecessors, (4104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:47,532 INFO L186 Difference]: Start difference. First operand has 286 places, 511 transitions, 7310 flow. Second operand 26 states and 2455 transitions. [2022-07-21 08:45:47,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 619 transitions, 9593 flow [2022-07-21 08:45:47,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 619 transitions, 9424 flow, removed 81 selfloop flow, removed 7 redundant places. [2022-07-21 08:45:48,000 INFO L242 Difference]: Finished difference. Result has 316 places, 518 transitions, 8012 flow [2022-07-21 08:45:48,001 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=7209, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=511, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=8012, PETRI_PLACES=316, PETRI_TRANSITIONS=518} [2022-07-21 08:45:48,001 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 157 predicate places. [2022-07-21 08:45:48,001 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 518 transitions, 8012 flow [2022-07-21 08:45:48,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 91.08333333333333) internal successors, (2186), 24 states have internal predecessors, (2186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:48,002 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:48,002 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:48,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-21 08:45:48,002 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:45:48,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash 157517170, now seen corresponding path program 3 times [2022-07-21 08:45:48,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:48,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514386339] [2022-07-21 08:45:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:48,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:48,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:49,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:49,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:49,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514386339] [2022-07-21 08:45:49,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514386339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:49,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:49,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-21 08:45:49,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091026902] [2022-07-21 08:45:49,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:49,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 08:45:49,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:49,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 08:45:49,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=374, Unknown=0, NotChecked=0, Total=462 [2022-07-21 08:45:49,509 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 152 [2022-07-21 08:45:49,510 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 518 transitions, 8012 flow. Second operand has 22 states, 22 states have (on average 97.0909090909091) internal successors, (2136), 22 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:49,510 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:49,510 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 152 [2022-07-21 08:45:49,510 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:45:54,345 INFO L129 PetriNetUnfolder]: 7196/25997 cut-off events. [2022-07-21 08:45:54,346 INFO L130 PetriNetUnfolder]: For 116771/125893 co-relation queries the response was YES. [2022-07-21 08:45:54,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 72435 conditions, 25997 events. 7196/25997 cut-off events. For 116771/125893 co-relation queries the response was YES. Maximal size of possible extension queue 3382. Compared 389100 event pairs, 588 based on Foata normal form. 1125/25652 useless extension candidates. Maximal degree in co-relation 72331. Up to 4260 conditions per place. [2022-07-21 08:45:54,734 INFO L132 encePairwiseOnDemand]: 131/152 looper letters, 251 selfloop transitions, 160 changer transitions 90/615 dead transitions. [2022-07-21 08:45:54,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 615 transitions, 10179 flow [2022-07-21 08:45:54,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-21 08:45:54,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-21 08:45:54,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2502 transitions. [2022-07-21 08:45:54,736 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6584210526315789 [2022-07-21 08:45:54,736 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2502 transitions. [2022-07-21 08:45:54,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2502 transitions. [2022-07-21 08:45:54,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:45:54,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2502 transitions. [2022-07-21 08:45:54,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 100.08) internal successors, (2502), 25 states have internal predecessors, (2502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:54,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:54,741 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 152.0) internal successors, (3952), 26 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:54,742 INFO L186 Difference]: Start difference. First operand has 316 places, 518 transitions, 8012 flow. Second operand 25 states and 2502 transitions. [2022-07-21 08:45:54,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 615 transitions, 10179 flow [2022-07-21 08:45:55,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 615 transitions, 10024 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-07-21 08:45:55,358 INFO L242 Difference]: Finished difference. Result has 326 places, 498 transitions, 7746 flow [2022-07-21 08:45:55,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=7918, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=518, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=364, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=7746, PETRI_PLACES=326, PETRI_TRANSITIONS=498} [2022-07-21 08:45:55,359 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 167 predicate places. [2022-07-21 08:45:55,359 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 498 transitions, 7746 flow [2022-07-21 08:45:55,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 97.0909090909091) internal successors, (2136), 22 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:55,359 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:45:55,360 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:45:55,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-21 08:45:55,360 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:45:55,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:45:55,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1344767218, now seen corresponding path program 4 times [2022-07-21 08:45:55,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:45:55,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648078193] [2022-07-21 08:45:55,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:45:55,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:45:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:45:56,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:45:56,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:45:56,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648078193] [2022-07-21 08:45:56,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648078193] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:45:56,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:45:56,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-21 08:45:56,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960963241] [2022-07-21 08:45:56,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:45:56,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 08:45:56,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:45:56,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 08:45:56,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2022-07-21 08:45:56,639 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 152 [2022-07-21 08:45:56,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 498 transitions, 7746 flow. Second operand has 24 states, 24 states have (on average 93.08333333333333) internal successors, (2234), 24 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:45:56,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:45:56,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 152 [2022-07-21 08:45:56,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:01,917 INFO L129 PetriNetUnfolder]: 6223/22218 cut-off events. [2022-07-21 08:46:01,917 INFO L130 PetriNetUnfolder]: For 121412/126975 co-relation queries the response was YES. [2022-07-21 08:46:02,232 INFO L84 FinitePrefix]: Finished finitePrefix Result has 67617 conditions, 22218 events. 6223/22218 cut-off events. For 121412/126975 co-relation queries the response was YES. Maximal size of possible extension queue 2850. Compared 323692 event pairs, 418 based on Foata normal form. 651/21666 useless extension candidates. Maximal degree in co-relation 67494. Up to 3612 conditions per place. [2022-07-21 08:46:02,266 INFO L132 encePairwiseOnDemand]: 132/152 looper letters, 259 selfloop transitions, 184 changer transitions 20/573 dead transitions. [2022-07-21 08:46:02,266 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 573 transitions, 9704 flow [2022-07-21 08:46:02,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:46:02,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:46:02,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2318 transitions. [2022-07-21 08:46:02,268 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2022-07-21 08:46:02,268 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2318 transitions. [2022-07-21 08:46:02,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2318 transitions. [2022-07-21 08:46:02,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:02,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2318 transitions. [2022-07-21 08:46:02,271 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 96.58333333333333) internal successors, (2318), 24 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:02,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:02,273 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:02,273 INFO L186 Difference]: Start difference. First operand has 326 places, 498 transitions, 7746 flow. Second operand 24 states and 2318 transitions. [2022-07-21 08:46:02,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 573 transitions, 9704 flow [2022-07-21 08:46:03,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 573 transitions, 9320 flow, removed 70 selfloop flow, removed 22 redundant places. [2022-07-21 08:46:03,151 INFO L242 Difference]: Finished difference. Result has 329 places, 516 transitions, 8480 flow [2022-07-21 08:46:03,152 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=7434, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=498, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=167, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8480, PETRI_PLACES=329, PETRI_TRANSITIONS=516} [2022-07-21 08:46:03,152 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 170 predicate places. [2022-07-21 08:46:03,152 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 516 transitions, 8480 flow [2022-07-21 08:46:03,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 93.08333333333333) internal successors, (2234), 24 states have internal predecessors, (2234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:03,153 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:03,153 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:03,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-21 08:46:03,154 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:46:03,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:03,154 INFO L85 PathProgramCache]: Analyzing trace with hash 636819974, now seen corresponding path program 5 times [2022-07-21 08:46:03,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:03,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375640701] [2022-07-21 08:46:03,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:03,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:04,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:04,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:04,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375640701] [2022-07-21 08:46:04,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375640701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:04,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:04,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-21 08:46:04,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214684993] [2022-07-21 08:46:04,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:04,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-21 08:46:04,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:04,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-21 08:46:04,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=412, Unknown=0, NotChecked=0, Total=506 [2022-07-21 08:46:04,510 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 152 [2022-07-21 08:46:04,512 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 516 transitions, 8480 flow. Second operand has 23 states, 23 states have (on average 93.17391304347827) internal successors, (2143), 23 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:04,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:04,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 152 [2022-07-21 08:46:04,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:10,237 INFO L129 PetriNetUnfolder]: 7036/25191 cut-off events. [2022-07-21 08:46:10,238 INFO L130 PetriNetUnfolder]: For 157579/164263 co-relation queries the response was YES. [2022-07-21 08:46:10,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 77704 conditions, 25191 events. 7036/25191 cut-off events. For 157579/164263 co-relation queries the response was YES. Maximal size of possible extension queue 3234. Compared 374652 event pairs, 485 based on Foata normal form. 735/24549 useless extension candidates. Maximal degree in co-relation 77571. Up to 4088 conditions per place. [2022-07-21 08:46:10,715 INFO L132 encePairwiseOnDemand]: 131/152 looper letters, 288 selfloop transitions, 176 changer transitions 24/598 dead transitions. [2022-07-21 08:46:10,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 598 transitions, 10646 flow [2022-07-21 08:46:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-21 08:46:10,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-21 08:46:10,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2324 transitions. [2022-07-21 08:46:10,718 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6370614035087719 [2022-07-21 08:46:10,718 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2324 transitions. [2022-07-21 08:46:10,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2324 transitions. [2022-07-21 08:46:10,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:10,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2324 transitions. [2022-07-21 08:46:10,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 96.83333333333333) internal successors, (2324), 24 states have internal predecessors, (2324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:10,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:10,725 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 152.0) internal successors, (3800), 25 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:10,725 INFO L186 Difference]: Start difference. First operand has 329 places, 516 transitions, 8480 flow. Second operand 24 states and 2324 transitions. [2022-07-21 08:46:10,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 598 transitions, 10646 flow [2022-07-21 08:46:11,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 598 transitions, 10005 flow, removed 230 selfloop flow, removed 15 redundant places. [2022-07-21 08:46:11,923 INFO L242 Difference]: Finished difference. Result has 337 places, 528 transitions, 8741 flow [2022-07-21 08:46:11,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=8039, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=516, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=8741, PETRI_PLACES=337, PETRI_TRANSITIONS=528} [2022-07-21 08:46:11,924 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 178 predicate places. [2022-07-21 08:46:11,925 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 528 transitions, 8741 flow [2022-07-21 08:46:11,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 93.17391304347827) internal successors, (2143), 23 states have internal predecessors, (2143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:11,925 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:11,925 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:11,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-21 08:46:11,925 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:46:11,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:11,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1144263630, now seen corresponding path program 6 times [2022-07-21 08:46:11,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:11,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895296899] [2022-07-21 08:46:11,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:11,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:13,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:13,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895296899] [2022-07-21 08:46:13,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895296899] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:13,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:13,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-21 08:46:13,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249308722] [2022-07-21 08:46:13,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:13,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 08:46:13,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:13,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 08:46:13,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=372, Unknown=0, NotChecked=0, Total=462 [2022-07-21 08:46:13,505 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 152 [2022-07-21 08:46:13,506 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 528 transitions, 8741 flow. Second operand has 22 states, 22 states have (on average 93.31818181818181) internal successors, (2053), 22 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:13,506 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:13,506 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 152 [2022-07-21 08:46:13,506 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:46:19,134 INFO L129 PetriNetUnfolder]: 7703/27864 cut-off events. [2022-07-21 08:46:19,134 INFO L130 PetriNetUnfolder]: For 157656/164787 co-relation queries the response was YES. [2022-07-21 08:46:19,803 INFO L84 FinitePrefix]: Finished finitePrefix Result has 81260 conditions, 27864 events. 7703/27864 cut-off events. For 157656/164787 co-relation queries the response was YES. Maximal size of possible extension queue 3692. Compared 422266 event pairs, 533 based on Foata normal form. 762/27070 useless extension candidates. Maximal degree in co-relation 81138. Up to 4580 conditions per place. [2022-07-21 08:46:19,841 INFO L132 encePairwiseOnDemand]: 130/152 looper letters, 271 selfloop transitions, 181 changer transitions 20/581 dead transitions. [2022-07-21 08:46:19,841 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 581 transitions, 10486 flow [2022-07-21 08:46:19,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-21 08:46:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-21 08:46:19,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1929 transitions. [2022-07-21 08:46:19,843 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6345394736842105 [2022-07-21 08:46:19,843 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1929 transitions. [2022-07-21 08:46:19,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1929 transitions. [2022-07-21 08:46:19,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:46:19,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1929 transitions. [2022-07-21 08:46:19,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 96.45) internal successors, (1929), 20 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:19,848 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:19,849 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 152.0) internal successors, (3192), 21 states have internal predecessors, (3192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:19,849 INFO L186 Difference]: Start difference. First operand has 337 places, 528 transitions, 8741 flow. Second operand 20 states and 1929 transitions. [2022-07-21 08:46:19,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 581 transitions, 10486 flow [2022-07-21 08:46:20,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 581 transitions, 10286 flow, removed 37 selfloop flow, removed 15 redundant places. [2022-07-21 08:46:21,002 INFO L242 Difference]: Finished difference. Result has 346 places, 542 transitions, 9325 flow [2022-07-21 08:46:21,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=152, PETRI_DIFFERENCE_MINUEND_FLOW=8561, PETRI_DIFFERENCE_MINUEND_PLACES=319, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=528, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=354, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=9325, PETRI_PLACES=346, PETRI_TRANSITIONS=542} [2022-07-21 08:46:21,003 INFO L279 CegarLoopForPetriNet]: 159 programPoint places, 187 predicate places. [2022-07-21 08:46:21,003 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 542 transitions, 9325 flow [2022-07-21 08:46:21,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 93.31818181818181) internal successors, (2053), 22 states have internal predecessors, (2053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:21,004 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:46:21,004 INFO L200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:46:21,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-21 08:46:21,004 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2022-07-21 08:46:21,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:46:21,005 INFO L85 PathProgramCache]: Analyzing trace with hash 1047494484, now seen corresponding path program 7 times [2022-07-21 08:46:21,005 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:46:21,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945980115] [2022-07-21 08:46:21,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:46:21,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:46:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:46:22,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:46:22,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:46:22,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945980115] [2022-07-21 08:46:22,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945980115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:46:22,378 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:46:22,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2022-07-21 08:46:22,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207482264] [2022-07-21 08:46:22,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:46:22,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-21 08:46:22,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:46:22,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-21 08:46:22,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-07-21 08:46:22,380 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 152 [2022-07-21 08:46:22,381 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 542 transitions, 9325 flow. Second operand has 24 states, 24 states have (on average 94.08333333333333) internal successors, (2258), 24 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:46:22,381 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:46:22,382 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 152 [2022-07-21 08:46:22,382 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand