./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c --full-output --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b8dbc81d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations TOGETHER --- Real Ultimate output --- This is Ultimate 0.2.3-?-b8dbc81 [2023-08-31 01:17:34,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-08-31 01:17:34,591 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-08-31 01:17:34,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-08-31 01:17:34,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-08-31 01:17:34,640 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-08-31 01:17:34,642 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-08-31 01:17:34,644 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-08-31 01:17:34,646 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-08-31 01:17:34,650 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-08-31 01:17:34,651 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-08-31 01:17:34,653 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-08-31 01:17:34,654 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-08-31 01:17:34,656 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-08-31 01:17:34,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-08-31 01:17:34,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-08-31 01:17:34,664 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-08-31 01:17:34,665 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-08-31 01:17:34,667 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-08-31 01:17:34,671 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-08-31 01:17:34,673 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-08-31 01:17:34,673 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-08-31 01:17:34,674 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-08-31 01:17:34,675 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-08-31 01:17:34,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-08-31 01:17:34,683 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-08-31 01:17:34,683 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-08-31 01:17:34,685 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-08-31 01:17:34,686 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-08-31 01:17:34,686 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-08-31 01:17:34,687 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-08-31 01:17:34,691 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-08-31 01:17:34,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-08-31 01:17:34,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-08-31 01:17:34,695 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-08-31 01:17:34,695 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-08-31 01:17:34,696 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-08-31 01:17:34,696 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-08-31 01:17:34,696 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-08-31 01:17:34,697 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-08-31 01:17:34,698 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-08-31 01:17:34,699 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-31 01:17:34,740 INFO L113 SettingsManager]: Loading preferences was successful [2023-08-31 01:17:34,740 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-31 01:17:34,741 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-31 01:17:34,741 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-31 01:17:34,742 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-31 01:17:34,742 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-31 01:17:34,743 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-31 01:17:34,743 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-08-31 01:17:34,743 INFO L138 SettingsManager]: * Use SBE=true [2023-08-31 01:17:34,743 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-31 01:17:34,744 INFO L138 SettingsManager]: * sizeof long=4 [2023-08-31 01:17:34,744 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-31 01:17:34,745 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-08-31 01:17:34,745 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-08-31 01:17:34,745 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-31 01:17:34,745 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-31 01:17:34,745 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-31 01:17:34,745 INFO L138 SettingsManager]: * sizeof long double=12 [2023-08-31 01:17:34,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-08-31 01:17:34,746 INFO L138 SettingsManager]: * Use constant arrays=true [2023-08-31 01:17:34,746 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-31 01:17:34,746 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-31 01:17:34,746 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-31 01:17:34,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-31 01:17:34,747 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:17:34,747 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-31 01:17:34,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-31 01:17:34,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-31 01:17:34,748 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-31 01:17:34,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-31 01:17:34,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-31 01:17:34,748 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-31 01:17:34,748 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-31 01:17:34,749 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-31 01:17:34,749 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-31 01:17:34,749 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b79c2a620eba99d5ba65b548a8599a4feb45877b2c0c8388713c23f9a60bea18 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> TOGETHER [2023-08-31 01:17:35,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-31 01:17:35,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-31 01:17:35,078 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-31 01:17:35,079 INFO L271 PluginConnector]: Initializing CDTParser... [2023-08-31 01:17:35,079 INFO L275 PluginConnector]: CDTParser initialized [2023-08-31 01:17:35,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-08-31 01:17:36,185 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-08-31 01:17:36,428 INFO L351 CDTParser]: Found 1 translation units. [2023-08-31 01:17:36,428 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c [2023-08-31 01:17:36,434 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/526ec1963/bd855544eb4847758972e4edfba5cea0/FLAGaea53bb6d [2023-08-31 01:17:36,444 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/526ec1963/bd855544eb4847758972e4edfba5cea0 [2023-08-31 01:17:36,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-31 01:17:36,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-08-31 01:17:36,449 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-31 01:17:36,449 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-31 01:17:36,452 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-31 01:17:36,452 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:17:36" (1/1) ... [2023-08-31 01:17:36,453 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fe373fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36, skipping insertion in model container [2023-08-31 01:17:36,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.08 01:17:36" (1/1) ... [2023-08-31 01:17:36,459 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-08-31 01:17:36,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-08-31 01:17:36,624 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c[3945,3958] [2023-08-31 01:17:36,644 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:17:36,653 INFO L203 MainTranslator]: Completed pre-run [2023-08-31 01:17:36,677 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-node-trans.wvr.c[3945,3958] [2023-08-31 01:17:36,683 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-31 01:17:36,697 INFO L208 MainTranslator]: Completed translation [2023-08-31 01:17:36,697 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36 WrapperNode [2023-08-31 01:17:36,698 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-31 01:17:36,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-31 01:17:36,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-31 01:17:36,699 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-31 01:17:36,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36" (1/1) ... [2023-08-31 01:17:36,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36" (1/1) ... [2023-08-31 01:17:36,775 INFO L138 Inliner]: procedures = 27, calls = 66, calls flagged for inlining = 22, calls inlined = 34, statements flattened = 431 [2023-08-31 01:17:36,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-31 01:17:36,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-31 01:17:36,780 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-31 01:17:36,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-08-31 01:17:36,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36" (1/1) ... [2023-08-31 01:17:36,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36" (1/1) ... [2023-08-31 01:17:36,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36" (1/1) ... [2023-08-31 01:17:36,806 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36" (1/1) ... [2023-08-31 01:17:36,816 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36" (1/1) ... [2023-08-31 01:17:36,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36" (1/1) ... [2023-08-31 01:17:36,855 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36" (1/1) ... [2023-08-31 01:17:36,857 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36" (1/1) ... [2023-08-31 01:17:36,860 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-31 01:17:36,867 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-31 01:17:36,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-08-31 01:17:36,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-08-31 01:17:36,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36" (1/1) ... [2023-08-31 01:17:36,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-31 01:17:36,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:17:36,897 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-31 01:17:36,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-31 01:17:36,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-31 01:17:36,938 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-31 01:17:36,938 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-31 01:17:36,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-31 01:17:36,939 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-31 01:17:36,940 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-31 01:17:36,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-31 01:17:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-31 01:17:36,941 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-31 01:17:36,941 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-31 01:17:36,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-31 01:17:36,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-31 01:17:36,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-31 01:17:36,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-31 01:17:36,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-31 01:17:36,943 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-31 01:17:37,096 INFO L236 CfgBuilder]: Building ICFG [2023-08-31 01:17:37,109 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-31 01:17:37,717 INFO L277 CfgBuilder]: Performing block encoding [2023-08-31 01:17:37,735 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-31 01:17:37,736 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2023-08-31 01:17:37,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:17:37 BoogieIcfgContainer [2023-08-31 01:17:37,738 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-31 01:17:37,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-31 01:17:37,740 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-08-31 01:17:37,742 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-08-31 01:17:37,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.08 01:17:36" (1/3) ... [2023-08-31 01:17:37,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3d429e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:17:37, skipping insertion in model container [2023-08-31 01:17:37,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.08 01:17:36" (2/3) ... [2023-08-31 01:17:37,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a3d429e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.08 01:17:37, skipping insertion in model container [2023-08-31 01:17:37,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.08 01:17:37" (3/3) ... [2023-08-31 01:17:37,750 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-node-trans.wvr.c [2023-08-31 01:17:37,757 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-31 01:17:37,765 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-31 01:17:37,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-31 01:17:37,765 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-31 01:17:37,920 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-31 01:17:37,972 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 470 places, 501 transitions, 1026 flow [2023-08-31 01:17:38,201 INFO L130 PetriNetUnfolder]: 41/498 cut-off events. [2023-08-31 01:17:38,202 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:17:38,210 INFO L83 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 498 events. 41/498 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 643 event pairs, 0 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-08-31 01:17:38,210 INFO L82 GeneralOperation]: Start removeDead. Operand has 470 places, 501 transitions, 1026 flow [2023-08-31 01:17:38,220 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 457 places, 488 transitions, 994 flow [2023-08-31 01:17:38,224 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-31 01:17:38,242 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 457 places, 488 transitions, 994 flow [2023-08-31 01:17:38,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 457 places, 488 transitions, 994 flow [2023-08-31 01:17:38,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 457 places, 488 transitions, 994 flow [2023-08-31 01:17:38,338 INFO L130 PetriNetUnfolder]: 41/488 cut-off events. [2023-08-31 01:17:38,339 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:17:38,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 501 conditions, 488 events. 41/488 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 642 event pairs, 0 based on Foata normal form. 0/447 useless extension candidates. Maximal degree in co-relation 424. Up to 2 conditions per place. [2023-08-31 01:17:38,352 INFO L119 LiptonReduction]: Number of co-enabled transitions 17280 [2023-08-31 01:17:53,767 INFO L134 LiptonReduction]: Checked pairs total: 21051 [2023-08-31 01:17:53,768 INFO L136 LiptonReduction]: Total number of compositions: 563 [2023-08-31 01:17:53,788 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-31 01:17:53,794 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@4f92eeba, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-31 01:17:53,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-31 01:17:53,802 INFO L130 PetriNetUnfolder]: 10/41 cut-off events. [2023-08-31 01:17:53,802 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-08-31 01:17:53,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:53,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:53,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:53,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:53,808 INFO L85 PathProgramCache]: Analyzing trace with hash -496890906, now seen corresponding path program 1 times [2023-08-31 01:17:53,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:53,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323977048] [2023-08-31 01:17:53,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:53,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:54,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:17:54,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:54,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323977048] [2023-08-31 01:17:54,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323977048] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:54,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:54,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 01:17:54,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140811494] [2023-08-31 01:17:54,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:54,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-31 01:17:54,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:54,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-31 01:17:54,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-31 01:17:54,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 465 out of 1064 [2023-08-31 01:17:54,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 102 flow. Second operand has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:54,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:54,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 465 of 1064 [2023-08-31 01:17:54,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:54,407 INFO L130 PetriNetUnfolder]: 699/1048 cut-off events. [2023-08-31 01:17:54,407 INFO L131 PetriNetUnfolder]: For 83/83 co-relation queries the response was YES. [2023-08-31 01:17:54,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 1048 events. 699/1048 cut-off events. For 83/83 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 3691 event pairs, 557 based on Foata normal form. 0/906 useless extension candidates. Maximal degree in co-relation 2016. Up to 1049 conditions per place. [2023-08-31 01:17:54,414 INFO L137 encePairwiseOnDemand]: 1063/1064 looper letters, 41 selfloop transitions, 0 changer transitions 0/41 dead transitions. [2023-08-31 01:17:54,414 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 41 transitions, 182 flow [2023-08-31 01:17:54,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-31 01:17:54,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-31 01:17:54,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 972 transitions. [2023-08-31 01:17:54,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4567669172932331 [2023-08-31 01:17:54,450 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 972 transitions. [2023-08-31 01:17:54,451 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 972 transitions. [2023-08-31 01:17:54,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:54,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 972 transitions. [2023-08-31 01:17:54,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 486.0) internal successors, (972), 2 states have internal predecessors, (972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:54,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 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) [2023-08-31 01:17:54,469 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 1064.0) internal successors, (3192), 3 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) [2023-08-31 01:17:54,471 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 102 flow. Second operand 2 states and 972 transitions. [2023-08-31 01:17:54,472 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 41 transitions, 182 flow [2023-08-31 01:17:54,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 41 transitions, 170 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-31 01:17:54,477 INFO L231 Difference]: Finished difference. Result has 37 places, 41 transitions, 88 flow [2023-08-31 01:17:54,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=88, PETRI_PLACES=37, PETRI_TRANSITIONS=41} [2023-08-31 01:17:54,481 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -5 predicate places. [2023-08-31 01:17:54,481 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 41 transitions, 88 flow [2023-08-31 01:17:54,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 477.5) internal successors, (955), 2 states have internal predecessors, (955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:54,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:54,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:54,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-31 01:17:54,483 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:54,484 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:54,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2005961306, now seen corresponding path program 1 times [2023-08-31 01:17:54,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:54,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722935239] [2023-08-31 01:17:54,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:54,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:54,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:17:54,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:54,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722935239] [2023-08-31 01:17:54,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722935239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:54,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:54,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:17:54,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122145095] [2023-08-31 01:17:54,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:54,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:17:54,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:54,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:17:54,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:17:54,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 458 out of 1064 [2023-08-31 01:17:54,636 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 41 transitions, 88 flow. Second operand has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:54,636 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:54,636 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 458 of 1064 [2023-08-31 01:17:54,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:54,886 INFO L130 PetriNetUnfolder]: 789/1184 cut-off events. [2023-08-31 01:17:54,887 INFO L131 PetriNetUnfolder]: For 10/10 co-relation queries the response was YES. [2023-08-31 01:17:54,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2435 conditions, 1184 events. 789/1184 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4309 event pairs, 473 based on Foata normal form. 0/1036 useless extension candidates. Maximal degree in co-relation 2432. Up to 867 conditions per place. [2023-08-31 01:17:54,892 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 52 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-08-31 01:17:54,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 55 transitions, 228 flow [2023-08-31 01:17:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:17:54,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:17:54,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1430 transitions. [2023-08-31 01:17:54,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44799498746867167 [2023-08-31 01:17:54,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1430 transitions. [2023-08-31 01:17:54,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1430 transitions. [2023-08-31 01:17:54,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:54,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1430 transitions. [2023-08-31 01:17:54,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 476.6666666666667) internal successors, (1430), 3 states have internal predecessors, (1430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:54,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:54,908 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:54,908 INFO L175 Difference]: Start difference. First operand has 37 places, 41 transitions, 88 flow. Second operand 3 states and 1430 transitions. [2023-08-31 01:17:54,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 55 transitions, 228 flow [2023-08-31 01:17:54,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 228 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-31 01:17:54,911 INFO L231 Difference]: Finished difference. Result has 41 places, 42 transitions, 106 flow [2023-08-31 01:17:54,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=41, PETRI_TRANSITIONS=42} [2023-08-31 01:17:54,913 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, -1 predicate places. [2023-08-31 01:17:54,913 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 42 transitions, 106 flow [2023-08-31 01:17:54,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:54,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:54,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:54,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-31 01:17:54,915 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:54,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:54,916 INFO L85 PathProgramCache]: Analyzing trace with hash -2002543410, now seen corresponding path program 1 times [2023-08-31 01:17:54,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:54,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344866701] [2023-08-31 01:17:54,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:54,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:54,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:55,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-31 01:17:55,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:55,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344866701] [2023-08-31 01:17:55,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344866701] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:55,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:55,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-31 01:17:55,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208441084] [2023-08-31 01:17:55,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:55,125 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:17:55,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:55,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:17:55,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:17:55,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 453 out of 1064 [2023-08-31 01:17:55,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 42 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 462.6666666666667) internal successors, (1388), 3 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:55,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:55,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 453 of 1064 [2023-08-31 01:17:55,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:55,416 INFO L130 PetriNetUnfolder]: 789/1185 cut-off events. [2023-08-31 01:17:55,417 INFO L131 PetriNetUnfolder]: For 186/186 co-relation queries the response was YES. [2023-08-31 01:17:55,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2807 conditions, 1185 events. 789/1185 cut-off events. For 186/186 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4292 event pairs, 641 based on Foata normal form. 0/1129 useless extension candidates. Maximal degree in co-relation 2802. Up to 1185 conditions per place. [2023-08-31 01:17:55,422 INFO L137 encePairwiseOnDemand]: 1061/1064 looper letters, 41 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-31 01:17:55,423 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 43 transitions, 194 flow [2023-08-31 01:17:55,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:17:55,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:17:55,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1402 transitions. [2023-08-31 01:17:55,427 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4392230576441103 [2023-08-31 01:17:55,427 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1402 transitions. [2023-08-31 01:17:55,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1402 transitions. [2023-08-31 01:17:55,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:55,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1402 transitions. [2023-08-31 01:17:55,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 467.3333333333333) internal successors, (1402), 3 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:55,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:55,439 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:55,439 INFO L175 Difference]: Start difference. First operand has 41 places, 42 transitions, 106 flow. Second operand 3 states and 1402 transitions. [2023-08-31 01:17:55,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 43 transitions, 194 flow [2023-08-31 01:17:55,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 43 transitions, 188 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:55,444 INFO L231 Difference]: Finished difference. Result has 42 places, 43 transitions, 112 flow [2023-08-31 01:17:55,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=42, PETRI_TRANSITIONS=43} [2023-08-31 01:17:55,445 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 0 predicate places. [2023-08-31 01:17:55,445 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 43 transitions, 112 flow [2023-08-31 01:17:55,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 462.6666666666667) internal successors, (1388), 3 states have internal predecessors, (1388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:55,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:55,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:55,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-31 01:17:55,447 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:55,447 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:55,447 INFO L85 PathProgramCache]: Analyzing trace with hash 283624533, now seen corresponding path program 1 times [2023-08-31 01:17:55,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:55,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854249511] [2023-08-31 01:17:55,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:55,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:55,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-31 01:17:55,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:55,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854249511] [2023-08-31 01:17:55,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854249511] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:55,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:55,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:17:55,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616990689] [2023-08-31 01:17:55,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:55,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:17:55,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:55,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:17:55,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:17:55,704 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-31 01:17:55,707 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 43 transitions, 112 flow. Second operand has 4 states, 4 states have (on average 458.5) internal successors, (1834), 4 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:55,707 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:55,707 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-31 01:17:55,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:55,915 INFO L130 PetriNetUnfolder]: 789/1186 cut-off events. [2023-08-31 01:17:55,916 INFO L131 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2023-08-31 01:17:55,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2677 conditions, 1186 events. 789/1186 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1084 useless extension candidates. Maximal degree in co-relation 2671. Up to 1185 conditions per place. [2023-08-31 01:17:55,921 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 41 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-08-31 01:17:55,921 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 44 transitions, 202 flow [2023-08-31 01:17:55,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:17:55,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:17:55,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-08-31 01:17:55,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-08-31 01:17:55,926 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-08-31 01:17:55,926 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-08-31 01:17:55,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:55,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-08-31 01:17:55,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:55,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 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) [2023-08-31 01:17:55,939 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 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) [2023-08-31 01:17:55,940 INFO L175 Difference]: Start difference. First operand has 42 places, 43 transitions, 112 flow. Second operand 4 states and 1847 transitions. [2023-08-31 01:17:55,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 44 transitions, 202 flow [2023-08-31 01:17:55,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 44 transitions, 198 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-31 01:17:55,943 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 122 flow [2023-08-31 01:17:55,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=122, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-08-31 01:17:55,945 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 3 predicate places. [2023-08-31 01:17:55,945 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 122 flow [2023-08-31 01:17:55,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 458.5) internal successors, (1834), 4 states have internal predecessors, (1834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:55,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:55,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:55,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-31 01:17:55,947 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:55,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:55,947 INFO L85 PathProgramCache]: Analyzing trace with hash 194249792, now seen corresponding path program 1 times [2023-08-31 01:17:55,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:55,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826003753] [2023-08-31 01:17:55,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:55,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:55,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:56,099 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-31 01:17:56,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:56,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826003753] [2023-08-31 01:17:56,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826003753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:56,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:56,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:17:56,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724235550] [2023-08-31 01:17:56,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:56,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:17:56,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:56,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:17:56,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:17:56,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-31 01:17:56,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 122 flow. Second operand has 4 states, 4 states have (on average 458.75) internal successors, (1835), 4 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:56,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:56,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-31 01:17:56,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:56,387 INFO L130 PetriNetUnfolder]: 789/1187 cut-off events. [2023-08-31 01:17:56,388 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-31 01:17:56,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2684 conditions, 1187 events. 789/1187 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1086 useless extension candidates. Maximal degree in co-relation 2677. Up to 1185 conditions per place. [2023-08-31 01:17:56,393 INFO L137 encePairwiseOnDemand]: 1059/1064 looper letters, 41 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-31 01:17:56,393 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 45 transitions, 214 flow [2023-08-31 01:17:56,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:17:56,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:17:56,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1848 transitions. [2023-08-31 01:17:56,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4342105263157895 [2023-08-31 01:17:56,398 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1848 transitions. [2023-08-31 01:17:56,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1848 transitions. [2023-08-31 01:17:56,399 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:56,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1848 transitions. [2023-08-31 01:17:56,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:56,410 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 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) [2023-08-31 01:17:56,412 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 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) [2023-08-31 01:17:56,412 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 122 flow. Second operand 4 states and 1848 transitions. [2023-08-31 01:17:56,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 45 transitions, 214 flow [2023-08-31 01:17:56,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 45 transitions, 208 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:56,415 INFO L231 Difference]: Finished difference. Result has 47 places, 45 transitions, 134 flow [2023-08-31 01:17:56,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=47, PETRI_TRANSITIONS=45} [2023-08-31 01:17:56,416 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 5 predicate places. [2023-08-31 01:17:56,416 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 45 transitions, 134 flow [2023-08-31 01:17:56,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 458.75) internal successors, (1835), 4 states have internal predecessors, (1835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:56,417 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:56,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:56,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-31 01:17:56,418 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:56,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:56,418 INFO L85 PathProgramCache]: Analyzing trace with hash 917435877, now seen corresponding path program 1 times [2023-08-31 01:17:56,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:56,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275862774] [2023-08-31 01:17:56,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:56,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:56,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:17:56,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:56,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275862774] [2023-08-31 01:17:56,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275862774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:56,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:56,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:17:56,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586146950] [2023-08-31 01:17:56,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:56,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:17:56,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:17:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:17:56,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-31 01:17:56,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 45 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:56,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:56,655 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-31 01:17:56,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:56,857 INFO L130 PetriNetUnfolder]: 789/1188 cut-off events. [2023-08-31 01:17:56,858 INFO L131 PetriNetUnfolder]: For 54/54 co-relation queries the response was YES. [2023-08-31 01:17:56,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2692 conditions, 1188 events. 789/1188 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1088 useless extension candidates. Maximal degree in co-relation 2684. Up to 1187 conditions per place. [2023-08-31 01:17:56,863 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 43 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-31 01:17:56,863 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 228 flow [2023-08-31 01:17:56,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:17:56,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:17:56,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-08-31 01:17:56,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-08-31 01:17:56,868 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-08-31 01:17:56,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-08-31 01:17:56,869 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:56,869 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-08-31 01:17:56,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:56,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 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) [2023-08-31 01:17:56,880 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 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) [2023-08-31 01:17:56,881 INFO L175 Difference]: Start difference. First operand has 47 places, 45 transitions, 134 flow. Second operand 4 states and 1847 transitions. [2023-08-31 01:17:56,881 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 228 flow [2023-08-31 01:17:56,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 46 transitions, 224 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:56,885 INFO L231 Difference]: Finished difference. Result has 49 places, 46 transitions, 144 flow [2023-08-31 01:17:56,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=49, PETRI_TRANSITIONS=46} [2023-08-31 01:17:56,888 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 7 predicate places. [2023-08-31 01:17:56,888 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 46 transitions, 144 flow [2023-08-31 01:17:56,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 459.0) internal successors, (1836), 4 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:56,890 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:56,890 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:56,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-31 01:17:56,891 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:56,891 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:56,891 INFO L85 PathProgramCache]: Analyzing trace with hash -230399429, now seen corresponding path program 1 times [2023-08-31 01:17:56,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:56,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783491263] [2023-08-31 01:17:56,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:56,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:56,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:57,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-31 01:17:57,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783491263] [2023-08-31 01:17:57,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783491263] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-31 01:17:57,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [944906647] [2023-08-31 01:17:57,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:57,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:17:57,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-31 01:17:57,189 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-31 01:17:57,199 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-31 01:17:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:57,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-31 01:17:57,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-08-31 01:17:57,442 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-31 01:17:57,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-31 01:17:57,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [944906647] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:57,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-31 01:17:57,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2023-08-31 01:17:57,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466280891] [2023-08-31 01:17:57,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:57,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:17:57,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:57,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:17:57,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-31 01:17:57,521 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-31 01:17:57,523 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 46 transitions, 144 flow. Second operand has 4 states, 4 states have (on average 459.25) internal successors, (1837), 4 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:57,523 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:57,523 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-31 01:17:57,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:57,726 INFO L130 PetriNetUnfolder]: 789/1189 cut-off events. [2023-08-31 01:17:57,727 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2023-08-31 01:17:57,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2699 conditions, 1189 events. 789/1189 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4290 event pairs, 641 based on Foata normal form. 0/1090 useless extension candidates. Maximal degree in co-relation 2690. Up to 1188 conditions per place. [2023-08-31 01:17:57,732 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 44 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-08-31 01:17:57,732 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 240 flow [2023-08-31 01:17:57,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:17:57,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:17:57,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-08-31 01:17:57,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-08-31 01:17:57,738 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-08-31 01:17:57,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-08-31 01:17:57,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:57,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-08-31 01:17:57,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:57,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 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) [2023-08-31 01:17:57,760 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 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) [2023-08-31 01:17:57,761 INFO L175 Difference]: Start difference. First operand has 49 places, 46 transitions, 144 flow. Second operand 4 states and 1847 transitions. [2023-08-31 01:17:57,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 240 flow [2023-08-31 01:17:57,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 234 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:57,763 INFO L231 Difference]: Finished difference. Result has 51 places, 47 transitions, 152 flow [2023-08-31 01:17:57,764 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=51, PETRI_TRANSITIONS=47} [2023-08-31 01:17:57,764 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 9 predicate places. [2023-08-31 01:17:57,764 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 47 transitions, 152 flow [2023-08-31 01:17:57,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 459.25) internal successors, (1837), 4 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:57,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:57,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:57,775 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-31 01:17:57,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-31 01:17:57,972 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:57,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:57,973 INFO L85 PathProgramCache]: Analyzing trace with hash 131576679, now seen corresponding path program 1 times [2023-08-31 01:17:57,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:57,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796203947] [2023-08-31 01:17:57,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:57,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:17:58,122 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-31 01:17:58,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:17:58,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796203947] [2023-08-31 01:17:58,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796203947] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:17:58,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:17:58,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:17:58,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511438549] [2023-08-31 01:17:58,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:17:58,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-31 01:17:58,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:17:58,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-31 01:17:58,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-31 01:17:58,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 451 out of 1064 [2023-08-31 01:17:58,221 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 47 transitions, 152 flow. Second operand has 4 states, 4 states have (on average 459.5) internal successors, (1838), 4 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:58,221 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:17:58,221 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 451 of 1064 [2023-08-31 01:17:58,221 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:17:58,445 INFO L130 PetriNetUnfolder]: 789/1190 cut-off events. [2023-08-31 01:17:58,446 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2023-08-31 01:17:58,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2705 conditions, 1190 events. 789/1190 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 4294 event pairs, 641 based on Foata normal form. 0/1092 useless extension candidates. Maximal degree in co-relation 2695. Up to 1189 conditions per place. [2023-08-31 01:17:58,452 INFO L137 encePairwiseOnDemand]: 1060/1064 looper letters, 45 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-31 01:17:58,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 48 transitions, 250 flow [2023-08-31 01:17:58,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-31 01:17:58,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-31 01:17:58,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1847 transitions. [2023-08-31 01:17:58,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43397556390977443 [2023-08-31 01:17:58,458 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1847 transitions. [2023-08-31 01:17:58,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1847 transitions. [2023-08-31 01:17:58,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:17:58,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1847 transitions. [2023-08-31 01:17:58,462 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 461.75) internal successors, (1847), 4 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:58,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 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) [2023-08-31 01:17:58,468 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1064.0) internal successors, (5320), 5 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) [2023-08-31 01:17:58,468 INFO L175 Difference]: Start difference. First operand has 51 places, 47 transitions, 152 flow. Second operand 4 states and 1847 transitions. [2023-08-31 01:17:58,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 48 transitions, 250 flow [2023-08-31 01:17:58,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 48 transitions, 244 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:17:58,471 INFO L231 Difference]: Finished difference. Result has 53 places, 48 transitions, 160 flow [2023-08-31 01:17:58,472 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=53, PETRI_TRANSITIONS=48} [2023-08-31 01:17:58,474 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 11 predicate places. [2023-08-31 01:17:58,474 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 48 transitions, 160 flow [2023-08-31 01:17:58,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 459.5) internal successors, (1838), 4 states have internal predecessors, (1838), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:17:58,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:17:58,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:17:58,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-31 01:17:58,476 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:17:58,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:17:58,476 INFO L85 PathProgramCache]: Analyzing trace with hash 1404509908, now seen corresponding path program 1 times [2023-08-31 01:17:58,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:17:58,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544776608] [2023-08-31 01:17:58,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:17:58,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:17:58,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:00,479 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:00,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:00,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544776608] [2023-08-31 01:18:00,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544776608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:00,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:00,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-08-31 01:18:00,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619194613] [2023-08-31 01:18:00,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:00,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-31 01:18:00,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:00,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-31 01:18:00,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2023-08-31 01:18:03,857 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 390 out of 1064 [2023-08-31 01:18:03,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 48 transitions, 160 flow. Second operand has 17 states, 17 states have (on average 392.05882352941177) internal successors, (6665), 17 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:03,863 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:03,863 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 390 of 1064 [2023-08-31 01:18:03,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:06,728 INFO L130 PetriNetUnfolder]: 2269/3572 cut-off events. [2023-08-31 01:18:06,728 INFO L131 PetriNetUnfolder]: For 382/382 co-relation queries the response was YES. [2023-08-31 01:18:06,733 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8196 conditions, 3572 events. 2269/3572 cut-off events. For 382/382 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 19020 event pairs, 402 based on Foata normal form. 1/3277 useless extension candidates. Maximal degree in co-relation 8185. Up to 866 conditions per place. [2023-08-31 01:18:06,747 INFO L137 encePairwiseOnDemand]: 1044/1064 looper letters, 194 selfloop transitions, 62 changer transitions 7/263 dead transitions. [2023-08-31 01:18:06,748 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 263 transitions, 1256 flow [2023-08-31 01:18:06,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-31 01:18:06,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-31 01:18:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8441 transitions. [2023-08-31 01:18:06,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3777747941281776 [2023-08-31 01:18:06,770 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8441 transitions. [2023-08-31 01:18:06,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8441 transitions. [2023-08-31 01:18:06,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:06,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8441 transitions. [2023-08-31 01:18:06,789 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 401.95238095238096) internal successors, (8441), 21 states have internal predecessors, (8441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:06,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:06,824 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:06,825 INFO L175 Difference]: Start difference. First operand has 53 places, 48 transitions, 160 flow. Second operand 21 states and 8441 transitions. [2023-08-31 01:18:06,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 263 transitions, 1256 flow [2023-08-31 01:18:06,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 263 transitions, 1250 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-31 01:18:06,836 INFO L231 Difference]: Finished difference. Result has 83 places, 116 transitions, 633 flow [2023-08-31 01:18:06,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=633, PETRI_PLACES=83, PETRI_TRANSITIONS=116} [2023-08-31 01:18:06,837 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 41 predicate places. [2023-08-31 01:18:06,837 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 116 transitions, 633 flow [2023-08-31 01:18:06,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 392.05882352941177) internal successors, (6665), 17 states have internal predecessors, (6665), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:06,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:06,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:06,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-31 01:18:06,839 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:06,840 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:06,840 INFO L85 PathProgramCache]: Analyzing trace with hash -2043930938, now seen corresponding path program 2 times [2023-08-31 01:18:06,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:06,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854263116] [2023-08-31 01:18:06,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:06,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:08,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:08,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:08,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854263116] [2023-08-31 01:18:08,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854263116] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:08,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:08,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:18:08,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000507880] [2023-08-31 01:18:08,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:08,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:18:08,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:08,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:18:08,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:18:09,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 405 out of 1064 [2023-08-31 01:18:09,631 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 116 transitions, 633 flow. Second operand has 11 states, 11 states have (on average 408.1818181818182) internal successors, (4490), 11 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:09,631 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:09,631 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 405 of 1064 [2023-08-31 01:18:09,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:12,194 INFO L130 PetriNetUnfolder]: 5246/8500 cut-off events. [2023-08-31 01:18:12,195 INFO L131 PetriNetUnfolder]: For 13035/13035 co-relation queries the response was YES. [2023-08-31 01:18:12,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29269 conditions, 8500 events. 5246/8500 cut-off events. For 13035/13035 co-relation queries the response was YES. Maximal size of possible extension queue 502. Compared 55536 event pairs, 886 based on Foata normal form. 1/8500 useless extension candidates. Maximal degree in co-relation 29246. Up to 2730 conditions per place. [2023-08-31 01:18:12,262 INFO L137 encePairwiseOnDemand]: 1047/1064 looper letters, 295 selfloop transitions, 221 changer transitions 7/523 dead transitions. [2023-08-31 01:18:12,263 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 523 transitions, 3808 flow [2023-08-31 01:18:12,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-31 01:18:12,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-31 01:18:12,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8739 transitions. [2023-08-31 01:18:12,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39111170784103116 [2023-08-31 01:18:12,283 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8739 transitions. [2023-08-31 01:18:12,283 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8739 transitions. [2023-08-31 01:18:12,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:12,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8739 transitions. [2023-08-31 01:18:12,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 416.14285714285717) internal successors, (8739), 21 states have internal predecessors, (8739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:12,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:12,388 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:12,389 INFO L175 Difference]: Start difference. First operand has 83 places, 116 transitions, 633 flow. Second operand 21 states and 8739 transitions. [2023-08-31 01:18:12,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 523 transitions, 3808 flow [2023-08-31 01:18:12,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 523 transitions, 3791 flow, removed 6 selfloop flow, removed 4 redundant places. [2023-08-31 01:18:12,544 INFO L231 Difference]: Finished difference. Result has 114 places, 353 transitions, 2987 flow [2023-08-31 01:18:12,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=626, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2987, PETRI_PLACES=114, PETRI_TRANSITIONS=353} [2023-08-31 01:18:12,546 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 72 predicate places. [2023-08-31 01:18:12,546 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 353 transitions, 2987 flow [2023-08-31 01:18:12,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 408.1818181818182) internal successors, (4490), 11 states have internal predecessors, (4490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:12,547 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:12,547 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:12,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-31 01:18:12,548 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:12,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:12,548 INFO L85 PathProgramCache]: Analyzing trace with hash 438698926, now seen corresponding path program 3 times [2023-08-31 01:18:12,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:12,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810163656] [2023-08-31 01:18:12,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:12,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:12,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:13,393 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:13,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:13,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810163656] [2023-08-31 01:18:13,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810163656] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:13,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:13,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:18:13,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715093660] [2023-08-31 01:18:13,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:13,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:18:13,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:18:13,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:18:14,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:18:14,108 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 353 transitions, 2987 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:14,108 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:14,108 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:18:14,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:16,211 INFO L130 PetriNetUnfolder]: 6096/10078 cut-off events. [2023-08-31 01:18:16,211 INFO L131 PetriNetUnfolder]: For 37061/37061 co-relation queries the response was YES. [2023-08-31 01:18:16,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45605 conditions, 10078 events. 6096/10078 cut-off events. For 37061/37061 co-relation queries the response was YES. Maximal size of possible extension queue 608. Compared 69059 event pairs, 1289 based on Foata normal form. 1/10078 useless extension candidates. Maximal degree in co-relation 45568. Up to 4742 conditions per place. [2023-08-31 01:18:16,357 INFO L137 encePairwiseOnDemand]: 1056/1064 looper letters, 606 selfloop transitions, 77 changer transitions 7/690 dead transitions. [2023-08-31 01:18:16,357 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 690 transitions, 7251 flow [2023-08-31 01:18:16,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:18:16,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:18:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3937 transitions. [2023-08-31 01:18:16,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41113199665831246 [2023-08-31 01:18:16,365 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3937 transitions. [2023-08-31 01:18:16,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3937 transitions. [2023-08-31 01:18:16,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:16,367 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3937 transitions. [2023-08-31 01:18:16,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 437.44444444444446) internal successors, (3937), 9 states have internal predecessors, (3937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:16,378 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:16,379 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:16,379 INFO L175 Difference]: Start difference. First operand has 114 places, 353 transitions, 2987 flow. Second operand 9 states and 3937 transitions. [2023-08-31 01:18:16,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 690 transitions, 7251 flow [2023-08-31 01:18:16,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 690 transitions, 7177 flow, removed 37 selfloop flow, removed 1 redundant places. [2023-08-31 01:18:16,808 INFO L231 Difference]: Finished difference. Result has 127 places, 363 transitions, 3275 flow [2023-08-31 01:18:16,808 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=2943, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=353, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=276, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3275, PETRI_PLACES=127, PETRI_TRANSITIONS=363} [2023-08-31 01:18:16,808 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-08-31 01:18:16,809 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 363 transitions, 3275 flow [2023-08-31 01:18:16,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:16,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:16,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:16,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-31 01:18:16,810 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:16,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:16,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1462585081, now seen corresponding path program 1 times [2023-08-31 01:18:16,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:16,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595109381] [2023-08-31 01:18:16,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:16,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:16,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:17,003 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:17,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:17,004 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595109381] [2023-08-31 01:18:17,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595109381] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:17,004 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:17,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:18:17,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162891041] [2023-08-31 01:18:17,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:17,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:18:17,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:17,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:18:17,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:18:17,064 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 452 out of 1064 [2023-08-31 01:18:17,066 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 363 transitions, 3275 flow. Second operand has 3 states, 3 states have (on average 463.6666666666667) internal successors, (1391), 3 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:17,066 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:17,066 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 452 of 1064 [2023-08-31 01:18:17,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:19,201 INFO L130 PetriNetUnfolder]: 7129/12371 cut-off events. [2023-08-31 01:18:19,201 INFO L131 PetriNetUnfolder]: For 50717/50717 co-relation queries the response was YES. [2023-08-31 01:18:19,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 56389 conditions, 12371 events. 7129/12371 cut-off events. For 50717/50717 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 94297 event pairs, 2708 based on Foata normal form. 181/12551 useless extension candidates. Maximal degree in co-relation 56345. Up to 8320 conditions per place. [2023-08-31 01:18:19,296 INFO L137 encePairwiseOnDemand]: 1061/1064 looper letters, 502 selfloop transitions, 37 changer transitions 0/539 dead transitions. [2023-08-31 01:18:19,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 539 transitions, 5981 flow [2023-08-31 01:18:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:18:19,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:18:19,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1416 transitions. [2023-08-31 01:18:19,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44360902255639095 [2023-08-31 01:18:19,299 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1416 transitions. [2023-08-31 01:18:19,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1416 transitions. [2023-08-31 01:18:19,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:19,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1416 transitions. [2023-08-31 01:18:19,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 472.0) internal successors, (1416), 3 states have internal predecessors, (1416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:19,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:19,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:19,455 INFO L175 Difference]: Start difference. First operand has 127 places, 363 transitions, 3275 flow. Second operand 3 states and 1416 transitions. [2023-08-31 01:18:19,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 539 transitions, 5981 flow [2023-08-31 01:18:19,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 539 transitions, 5860 flow, removed 6 selfloop flow, removed 2 redundant places. [2023-08-31 01:18:19,977 INFO L231 Difference]: Finished difference. Result has 127 places, 369 transitions, 3389 flow [2023-08-31 01:18:19,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=363, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3389, PETRI_PLACES=127, PETRI_TRANSITIONS=369} [2023-08-31 01:18:19,978 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 85 predicate places. [2023-08-31 01:18:19,978 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 369 transitions, 3389 flow [2023-08-31 01:18:19,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 463.6666666666667) internal successors, (1391), 3 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:19,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:19,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:19,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-31 01:18:19,979 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:19,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:19,979 INFO L85 PathProgramCache]: Analyzing trace with hash 2026890830, now seen corresponding path program 4 times [2023-08-31 01:18:19,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:19,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022560359] [2023-08-31 01:18:19,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:19,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:20,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:20,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:20,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022560359] [2023-08-31 01:18:20,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022560359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:20,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:20,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:18:20,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341945047] [2023-08-31 01:18:20,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:20,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-31 01:18:20,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:20,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-31 01:18:20,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2023-08-31 01:18:21,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 412 out of 1064 [2023-08-31 01:18:21,668 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 369 transitions, 3389 flow. Second operand has 12 states, 12 states have (on average 414.9166666666667) internal successors, (4979), 12 states have internal predecessors, (4979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:21,668 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:21,668 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 412 of 1064 [2023-08-31 01:18:21,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:24,465 INFO L130 PetriNetUnfolder]: 8219/14587 cut-off events. [2023-08-31 01:18:24,465 INFO L131 PetriNetUnfolder]: For 56399/56399 co-relation queries the response was YES. [2023-08-31 01:18:24,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66673 conditions, 14587 events. 8219/14587 cut-off events. For 56399/56399 co-relation queries the response was YES. Maximal size of possible extension queue 938. Compared 117520 event pairs, 1221 based on Foata normal form. 2/14588 useless extension candidates. Maximal degree in co-relation 66629. Up to 6191 conditions per place. [2023-08-31 01:18:24,569 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 659 selfloop transitions, 78 changer transitions 7/744 dead transitions. [2023-08-31 01:18:24,570 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 744 transitions, 8186 flow [2023-08-31 01:18:24,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:18:24,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:18:24,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4681 transitions. [2023-08-31 01:18:24,578 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3999487354750513 [2023-08-31 01:18:24,578 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4681 transitions. [2023-08-31 01:18:24,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4681 transitions. [2023-08-31 01:18:24,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:24,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4681 transitions. [2023-08-31 01:18:24,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 425.54545454545456) internal successors, (4681), 11 states have internal predecessors, (4681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:24,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:24,594 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:24,595 INFO L175 Difference]: Start difference. First operand has 127 places, 369 transitions, 3389 flow. Second operand 11 states and 4681 transitions. [2023-08-31 01:18:24,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 744 transitions, 8186 flow [2023-08-31 01:18:25,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 744 transitions, 8107 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-31 01:18:25,248 INFO L231 Difference]: Finished difference. Result has 142 places, 380 transitions, 3717 flow [2023-08-31 01:18:25,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3352, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3717, PETRI_PLACES=142, PETRI_TRANSITIONS=380} [2023-08-31 01:18:25,249 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 100 predicate places. [2023-08-31 01:18:25,249 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 380 transitions, 3717 flow [2023-08-31 01:18:25,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 414.9166666666667) internal successors, (4979), 12 states have internal predecessors, (4979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:25,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:25,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:25,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-31 01:18:25,250 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:25,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:25,251 INFO L85 PathProgramCache]: Analyzing trace with hash -605776418, now seen corresponding path program 5 times [2023-08-31 01:18:25,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:25,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158280837] [2023-08-31 01:18:25,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:25,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:25,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:25,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:25,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:25,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158280837] [2023-08-31 01:18:25,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158280837] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:25,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:25,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:18:25,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699887694] [2023-08-31 01:18:25,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:25,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:18:25,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:25,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:18:25,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:18:26,784 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:18:26,786 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 380 transitions, 3717 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:26,786 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:26,786 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:18:26,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:29,900 INFO L130 PetriNetUnfolder]: 8453/15378 cut-off events. [2023-08-31 01:18:29,900 INFO L131 PetriNetUnfolder]: For 71719/71719 co-relation queries the response was YES. [2023-08-31 01:18:29,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72155 conditions, 15378 events. 8453/15378 cut-off events. For 71719/71719 co-relation queries the response was YES. Maximal size of possible extension queue 1007. Compared 128508 event pairs, 2359 based on Foata normal form. 1/15378 useless extension candidates. Maximal degree in co-relation 72105. Up to 7695 conditions per place. [2023-08-31 01:18:30,006 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 476 selfloop transitions, 48 changer transitions 8/532 dead transitions. [2023-08-31 01:18:30,006 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 532 transitions, 6034 flow [2023-08-31 01:18:30,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:18:30,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:18:30,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3939 transitions. [2023-08-31 01:18:30,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41134085213032584 [2023-08-31 01:18:30,014 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3939 transitions. [2023-08-31 01:18:30,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3939 transitions. [2023-08-31 01:18:30,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:30,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3939 transitions. [2023-08-31 01:18:30,020 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 437.6666666666667) internal successors, (3939), 9 states have internal predecessors, (3939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:30,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:30,027 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:30,027 INFO L175 Difference]: Start difference. First operand has 142 places, 380 transitions, 3717 flow. Second operand 9 states and 3939 transitions. [2023-08-31 01:18:30,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 532 transitions, 6034 flow [2023-08-31 01:18:30,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 532 transitions, 5973 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-08-31 01:18:30,748 INFO L231 Difference]: Finished difference. Result has 150 places, 394 transitions, 3979 flow [2023-08-31 01:18:30,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3690, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3979, PETRI_PLACES=150, PETRI_TRANSITIONS=394} [2023-08-31 01:18:30,749 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 108 predicate places. [2023-08-31 01:18:30,749 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 394 transitions, 3979 flow [2023-08-31 01:18:30,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:30,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:30,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:30,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-31 01:18:30,750 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:30,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:30,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1165735616, now seen corresponding path program 6 times [2023-08-31 01:18:30,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:30,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706864523] [2023-08-31 01:18:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:30,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:31,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:31,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706864523] [2023-08-31 01:18:31,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706864523] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:31,620 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:31,620 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:18:31,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917297179] [2023-08-31 01:18:31,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:31,621 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:18:31,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:31,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:18:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:18:32,945 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-08-31 01:18:32,947 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 394 transitions, 3979 flow. Second operand has 13 states, 13 states have (on average 416.6923076923077) internal successors, (5417), 13 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:32,947 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:32,947 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-08-31 01:18:32,947 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:37,923 INFO L130 PetriNetUnfolder]: 14218/26052 cut-off events. [2023-08-31 01:18:37,923 INFO L131 PetriNetUnfolder]: For 135566/135566 co-relation queries the response was YES. [2023-08-31 01:18:38,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124384 conditions, 26052 events. 14218/26052 cut-off events. For 135566/135566 co-relation queries the response was YES. Maximal size of possible extension queue 1732. Compared 237832 event pairs, 5116 based on Foata normal form. 2/26053 useless extension candidates. Maximal degree in co-relation 124330. Up to 12972 conditions per place. [2023-08-31 01:18:38,197 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 845 selfloop transitions, 76 changer transitions 7/928 dead transitions. [2023-08-31 01:18:38,198 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 928 transitions, 11055 flow [2023-08-31 01:18:38,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:18:38,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:18:38,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4294 transitions. [2023-08-31 01:18:38,203 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4035714285714286 [2023-08-31 01:18:38,203 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4294 transitions. [2023-08-31 01:18:38,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4294 transitions. [2023-08-31 01:18:38,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:38,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4294 transitions. [2023-08-31 01:18:38,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 429.4) internal successors, (4294), 10 states have internal predecessors, (4294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:38,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:38,216 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:38,216 INFO L175 Difference]: Start difference. First operand has 150 places, 394 transitions, 3979 flow. Second operand 10 states and 4294 transitions. [2023-08-31 01:18:38,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 928 transitions, 11055 flow [2023-08-31 01:18:40,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 928 transitions, 10907 flow, removed 22 selfloop flow, removed 3 redundant places. [2023-08-31 01:18:40,166 INFO L231 Difference]: Finished difference. Result has 162 places, 454 transitions, 5059 flow [2023-08-31 01:18:40,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=3904, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=5059, PETRI_PLACES=162, PETRI_TRANSITIONS=454} [2023-08-31 01:18:40,166 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 120 predicate places. [2023-08-31 01:18:40,167 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 454 transitions, 5059 flow [2023-08-31 01:18:40,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 416.6923076923077) internal successors, (5417), 13 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:40,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:40,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:40,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-31 01:18:40,168 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:40,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:40,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1788906114, now seen corresponding path program 7 times [2023-08-31 01:18:40,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:40,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339751512] [2023-08-31 01:18:40,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:40,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:40,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:40,759 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:40,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:40,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339751512] [2023-08-31 01:18:40,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339751512] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:40,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:40,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:18:40,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145061652] [2023-08-31 01:18:40,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:40,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:18:40,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:40,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:18:40,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:18:41,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:18:41,313 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 454 transitions, 5059 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:41,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:41,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:18:41,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:18:46,937 INFO L130 PetriNetUnfolder]: 15648/28811 cut-off events. [2023-08-31 01:18:46,937 INFO L131 PetriNetUnfolder]: For 176467/176467 co-relation queries the response was YES. [2023-08-31 01:18:47,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142018 conditions, 28811 events. 15648/28811 cut-off events. For 176467/176467 co-relation queries the response was YES. Maximal size of possible extension queue 1901. Compared 268566 event pairs, 4073 based on Foata normal form. 1/28811 useless extension candidates. Maximal degree in co-relation 141958. Up to 14575 conditions per place. [2023-08-31 01:18:47,231 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 610 selfloop transitions, 69 changer transitions 8/687 dead transitions. [2023-08-31 01:18:47,231 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 687 transitions, 8629 flow [2023-08-31 01:18:47,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:18:47,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:18:47,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3955 transitions. [2023-08-31 01:18:47,235 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4130116959064328 [2023-08-31 01:18:47,235 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3955 transitions. [2023-08-31 01:18:47,235 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3955 transitions. [2023-08-31 01:18:47,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:18:47,237 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3955 transitions. [2023-08-31 01:18:47,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 439.44444444444446) internal successors, (3955), 9 states have internal predecessors, (3955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:47,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:47,247 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:47,247 INFO L175 Difference]: Start difference. First operand has 162 places, 454 transitions, 5059 flow. Second operand 9 states and 3955 transitions. [2023-08-31 01:18:47,247 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 687 transitions, 8629 flow [2023-08-31 01:18:50,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 687 transitions, 8535 flow, removed 38 selfloop flow, removed 3 redundant places. [2023-08-31 01:18:50,010 INFO L231 Difference]: Finished difference. Result has 172 places, 480 transitions, 5549 flow [2023-08-31 01:18:50,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=5005, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=454, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=398, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=5549, PETRI_PLACES=172, PETRI_TRANSITIONS=480} [2023-08-31 01:18:50,011 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 130 predicate places. [2023-08-31 01:18:50,011 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 480 transitions, 5549 flow [2023-08-31 01:18:50,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:50,012 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:18:50,012 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:18:50,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-31 01:18:50,012 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:18:50,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:18:50,013 INFO L85 PathProgramCache]: Analyzing trace with hash 977259368, now seen corresponding path program 8 times [2023-08-31 01:18:50,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:18:50,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133505139] [2023-08-31 01:18:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:18:50,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:18:50,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:18:51,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:18:51,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:18:51,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133505139] [2023-08-31 01:18:51,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133505139] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:18:51,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:18:51,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-31 01:18:51,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263214182] [2023-08-31 01:18:51,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:18:51,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-31 01:18:51,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:18:51,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-31 01:18:51,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-08-31 01:18:53,291 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 396 out of 1064 [2023-08-31 01:18:53,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 480 transitions, 5549 flow. Second operand has 15 states, 15 states have (on average 398.3333333333333) internal successors, (5975), 15 states have internal predecessors, (5975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:18:53,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:18:53,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 396 of 1064 [2023-08-31 01:18:53,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:00,916 INFO L130 PetriNetUnfolder]: 18518/34214 cut-off events. [2023-08-31 01:19:00,916 INFO L131 PetriNetUnfolder]: For 225443/225443 co-relation queries the response was YES. [2023-08-31 01:19:01,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 172078 conditions, 34214 events. 18518/34214 cut-off events. For 225443/225443 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 328469 event pairs, 4128 based on Foata normal form. 4/34217 useless extension candidates. Maximal degree in co-relation 172013. Up to 9992 conditions per place. [2023-08-31 01:19:01,361 INFO L137 encePairwiseOnDemand]: 1047/1064 looper letters, 578 selfloop transitions, 600 changer transitions 8/1186 dead transitions. [2023-08-31 01:19:01,361 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 1186 transitions, 14932 flow [2023-08-31 01:19:01,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-31 01:19:01,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-31 01:19:01,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 8575 transitions. [2023-08-31 01:19:01,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38377192982456143 [2023-08-31 01:19:01,367 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 8575 transitions. [2023-08-31 01:19:01,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 8575 transitions. [2023-08-31 01:19:01,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:19:01,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 8575 transitions. [2023-08-31 01:19:01,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 408.3333333333333) internal successors, (8575), 21 states have internal predecessors, (8575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:01,393 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:01,396 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 1064.0) internal successors, (23408), 22 states have internal predecessors, (23408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:01,396 INFO L175 Difference]: Start difference. First operand has 172 places, 480 transitions, 5549 flow. Second operand 21 states and 8575 transitions. [2023-08-31 01:19:01,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 1186 transitions, 14932 flow [2023-08-31 01:19:04,878 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 1186 transitions, 14698 flow, removed 39 selfloop flow, removed 3 redundant places. [2023-08-31 01:19:04,889 INFO L231 Difference]: Finished difference. Result has 201 places, 844 transitions, 11876 flow [2023-08-31 01:19:04,889 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=5437, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=480, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=243, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=11876, PETRI_PLACES=201, PETRI_TRANSITIONS=844} [2023-08-31 01:19:04,890 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 159 predicate places. [2023-08-31 01:19:04,890 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 844 transitions, 11876 flow [2023-08-31 01:19:04,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 398.3333333333333) internal successors, (5975), 15 states have internal predecessors, (5975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:04,891 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:04,891 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:04,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-31 01:19:04,891 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:19:04,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:04,892 INFO L85 PathProgramCache]: Analyzing trace with hash 1362034862, now seen corresponding path program 9 times [2023-08-31 01:19:04,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:04,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322143152] [2023-08-31 01:19:04,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:04,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:05,419 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:05,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:05,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322143152] [2023-08-31 01:19:05,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322143152] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:05,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:05,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:19:05,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699361257] [2023-08-31 01:19:05,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:05,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:19:05,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:05,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:19:05,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:19:06,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:19:06,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 844 transitions, 11876 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:06,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:06,017 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:19:06,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:16,122 INFO L130 PetriNetUnfolder]: 20471/37978 cut-off events. [2023-08-31 01:19:16,122 INFO L131 PetriNetUnfolder]: For 366447/366447 co-relation queries the response was YES. [2023-08-31 01:19:16,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 218306 conditions, 37978 events. 20471/37978 cut-off events. For 366447/366447 co-relation queries the response was YES. Maximal size of possible extension queue 2499. Compared 370305 event pairs, 6191 based on Foata normal form. 1/37978 useless extension candidates. Maximal degree in co-relation 218229. Up to 18558 conditions per place. [2023-08-31 01:19:16,685 INFO L137 encePairwiseOnDemand]: 1055/1064 looper letters, 1062 selfloop transitions, 95 changer transitions 7/1164 dead transitions. [2023-08-31 01:19:16,685 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 1164 transitions, 17871 flow [2023-08-31 01:19:16,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:19:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:19:16,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3967 transitions. [2023-08-31 01:19:16,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41426482873851295 [2023-08-31 01:19:16,688 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3967 transitions. [2023-08-31 01:19:16,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3967 transitions. [2023-08-31 01:19:16,689 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:19:16,690 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3967 transitions. [2023-08-31 01:19:16,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 440.77777777777777) internal successors, (3967), 9 states have internal predecessors, (3967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:16,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:16,700 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:16,700 INFO L175 Difference]: Start difference. First operand has 201 places, 844 transitions, 11876 flow. Second operand 9 states and 3967 transitions. [2023-08-31 01:19:16,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 1164 transitions, 17871 flow [2023-08-31 01:19:25,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 1164 transitions, 17622 flow, removed 100 selfloop flow, removed 3 redundant places. [2023-08-31 01:19:25,239 INFO L231 Difference]: Finished difference. Result has 212 places, 872 transitions, 12483 flow [2023-08-31 01:19:25,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=11722, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=844, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=763, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=12483, PETRI_PLACES=212, PETRI_TRANSITIONS=872} [2023-08-31 01:19:25,240 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 170 predicate places. [2023-08-31 01:19:25,240 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 872 transitions, 12483 flow [2023-08-31 01:19:25,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:25,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:25,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:25,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-31 01:19:25,241 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:19:25,241 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:25,241 INFO L85 PathProgramCache]: Analyzing trace with hash -1669446438, now seen corresponding path program 10 times [2023-08-31 01:19:25,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:25,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693118937] [2023-08-31 01:19:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:25,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:26,036 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:26,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:26,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693118937] [2023-08-31 01:19:26,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693118937] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:26,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:26,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-08-31 01:19:26,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153012906] [2023-08-31 01:19:26,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:26,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-31 01:19:26,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-31 01:19:26,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2023-08-31 01:19:27,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 414 out of 1064 [2023-08-31 01:19:27,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 872 transitions, 12483 flow. Second operand has 13 states, 13 states have (on average 416.6923076923077) internal successors, (5417), 13 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:27,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:27,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 414 of 1064 [2023-08-31 01:19:27,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:19:37,801 INFO L130 PetriNetUnfolder]: 20493/38039 cut-off events. [2023-08-31 01:19:37,802 INFO L131 PetriNetUnfolder]: For 386924/386924 co-relation queries the response was YES. [2023-08-31 01:19:38,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221603 conditions, 38039 events. 20493/38039 cut-off events. For 386924/386924 co-relation queries the response was YES. Maximal size of possible extension queue 2508. Compared 371577 event pairs, 6893 based on Foata normal form. 2/38040 useless extension candidates. Maximal degree in co-relation 221520. Up to 16626 conditions per place. [2023-08-31 01:19:38,526 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1118 selfloop transitions, 72 changer transitions 8/1198 dead transitions. [2023-08-31 01:19:38,526 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 1198 transitions, 18917 flow [2023-08-31 01:19:38,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-31 01:19:38,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-31 01:19:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 4292 transitions. [2023-08-31 01:19:38,530 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40338345864661657 [2023-08-31 01:19:38,530 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 4292 transitions. [2023-08-31 01:19:38,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 4292 transitions. [2023-08-31 01:19:38,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:19:38,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 4292 transitions. [2023-08-31 01:19:38,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 429.2) internal successors, (4292), 10 states have internal predecessors, (4292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:38,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:38,541 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 1064.0) internal successors, (11704), 11 states have internal predecessors, (11704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:38,541 INFO L175 Difference]: Start difference. First operand has 212 places, 872 transitions, 12483 flow. Second operand 10 states and 4292 transitions. [2023-08-31 01:19:38,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 1198 transitions, 18917 flow [2023-08-31 01:19:46,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 1198 transitions, 18619 flow, removed 81 selfloop flow, removed 2 redundant places. [2023-08-31 01:19:46,069 INFO L231 Difference]: Finished difference. Result has 224 places, 888 transitions, 12904 flow [2023-08-31 01:19:46,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=12345, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=872, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=801, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=12904, PETRI_PLACES=224, PETRI_TRANSITIONS=888} [2023-08-31 01:19:46,070 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 182 predicate places. [2023-08-31 01:19:46,070 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 888 transitions, 12904 flow [2023-08-31 01:19:46,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 416.6923076923077) internal successors, (5417), 13 states have internal predecessors, (5417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:46,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:19:46,071 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:19:46,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-31 01:19:46,071 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:19:46,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:19:46,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1563823200, now seen corresponding path program 11 times [2023-08-31 01:19:46,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:19:46,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89919832] [2023-08-31 01:19:46,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:19:46,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:19:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:19:46,698 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:19:46,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:19:46,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89919832] [2023-08-31 01:19:46,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89919832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:19:46,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:19:46,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:19:46,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307922798] [2023-08-31 01:19:46,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:19:46,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:19:46,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:19:46,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:19:46,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:19:47,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:19:47,243 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 888 transitions, 12904 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:19:47,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:19:47,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:19:47,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:20:01,544 INFO L130 PetriNetUnfolder]: 26490/49576 cut-off events. [2023-08-31 01:20:01,545 INFO L131 PetriNetUnfolder]: For 525377/525377 co-relation queries the response was YES. [2023-08-31 01:20:02,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290463 conditions, 49576 events. 26490/49576 cut-off events. For 525377/525377 co-relation queries the response was YES. Maximal size of possible extension queue 3334. Compared 507995 event pairs, 10421 based on Foata normal form. 1/49576 useless extension candidates. Maximal degree in co-relation 290375. Up to 28414 conditions per place. [2023-08-31 01:20:02,486 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1360 selfloop transitions, 113 changer transitions 7/1480 dead transitions. [2023-08-31 01:20:02,486 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 1480 transitions, 23963 flow [2023-08-31 01:20:02,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:20:02,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:20:02,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3959 transitions. [2023-08-31 01:20:02,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4134294068504595 [2023-08-31 01:20:02,490 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3959 transitions. [2023-08-31 01:20:02,490 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3959 transitions. [2023-08-31 01:20:02,490 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:20:02,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3959 transitions. [2023-08-31 01:20:02,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 439.8888888888889) internal successors, (3959), 9 states have internal predecessors, (3959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:02,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:02,499 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:02,500 INFO L175 Difference]: Start difference. First operand has 224 places, 888 transitions, 12904 flow. Second operand 9 states and 3959 transitions. [2023-08-31 01:20:02,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 1480 transitions, 23963 flow [2023-08-31 01:20:17,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 1480 transitions, 23854 flow, removed 22 selfloop flow, removed 4 redundant places. [2023-08-31 01:20:17,157 INFO L231 Difference]: Finished difference. Result has 234 places, 942 transitions, 14256 flow [2023-08-31 01:20:17,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=12831, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=888, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=777, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=14256, PETRI_PLACES=234, PETRI_TRANSITIONS=942} [2023-08-31 01:20:17,158 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 192 predicate places. [2023-08-31 01:20:17,158 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 942 transitions, 14256 flow [2023-08-31 01:20:17,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:17,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:20:17,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:20:17,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-31 01:20:17,159 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:20:17,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:20:17,160 INFO L85 PathProgramCache]: Analyzing trace with hash -984770268, now seen corresponding path program 12 times [2023-08-31 01:20:17,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:20:17,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227671753] [2023-08-31 01:20:17,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:20:17,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:20:17,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:20:17,818 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:17,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:20:17,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227671753] [2023-08-31 01:20:17,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227671753] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:20:17,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:20:17,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:20:17,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182588707] [2023-08-31 01:20:17,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:20:17,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:20:17,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:20:17,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:20:17,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:20:18,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:20:18,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 942 transitions, 14256 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:18,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:20:18,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:20:18,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:20:33,128 INFO L130 PetriNetUnfolder]: 26489/49567 cut-off events. [2023-08-31 01:20:33,128 INFO L131 PetriNetUnfolder]: For 564938/564938 co-relation queries the response was YES. [2023-08-31 01:20:33,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294874 conditions, 49567 events. 26489/49567 cut-off events. For 564938/564938 co-relation queries the response was YES. Maximal size of possible extension queue 3304. Compared 507034 event pairs, 10655 based on Foata normal form. 1/49567 useless extension candidates. Maximal degree in co-relation 294780. Up to 28414 conditions per place. [2023-08-31 01:20:34,295 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1256 selfloop transitions, 176 changer transitions 8/1440 dead transitions. [2023-08-31 01:20:34,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 1440 transitions, 23971 flow [2023-08-31 01:20:34,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:20:34,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:20:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3948 transitions. [2023-08-31 01:20:34,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41228070175438597 [2023-08-31 01:20:34,299 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3948 transitions. [2023-08-31 01:20:34,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3948 transitions. [2023-08-31 01:20:34,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:20:34,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3948 transitions. [2023-08-31 01:20:34,303 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 438.6666666666667) internal successors, (3948), 9 states have internal predecessors, (3948), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:34,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:34,309 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:34,309 INFO L175 Difference]: Start difference. First operand has 234 places, 942 transitions, 14256 flow. Second operand 9 states and 3948 transitions. [2023-08-31 01:20:34,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 1440 transitions, 23971 flow [2023-08-31 01:20:49,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 1440 transitions, 23859 flow, removed 56 selfloop flow, removed 1 redundant places. [2023-08-31 01:20:49,046 INFO L231 Difference]: Finished difference. Result has 246 places, 1010 transitions, 15941 flow [2023-08-31 01:20:49,047 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=14196, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=942, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=810, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=15941, PETRI_PLACES=246, PETRI_TRANSITIONS=1010} [2023-08-31 01:20:49,047 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 204 predicate places. [2023-08-31 01:20:49,047 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 1010 transitions, 15941 flow [2023-08-31 01:20:49,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:49,048 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:20:49,048 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:20:49,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-31 01:20:49,048 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:20:49,048 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:20:49,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1999783334, now seen corresponding path program 13 times [2023-08-31 01:20:49,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:20:49,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712330875] [2023-08-31 01:20:49,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:20:49,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:20:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:20:49,645 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:20:49,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:20:49,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712330875] [2023-08-31 01:20:49,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712330875] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:20:49,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:20:49,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:20:49,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813851794] [2023-08-31 01:20:49,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:20:49,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:20:49,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:20:49,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:20:49,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:20:50,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:20:50,119 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 1010 transitions, 15941 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:20:50,119 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:20:50,119 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:20:50,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:21:06,243 INFO L130 PetriNetUnfolder]: 27658/51752 cut-off events. [2023-08-31 01:21:06,243 INFO L131 PetriNetUnfolder]: For 605019/605019 co-relation queries the response was YES. [2023-08-31 01:21:07,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310774 conditions, 51752 events. 27658/51752 cut-off events. For 605019/605019 co-relation queries the response was YES. Maximal size of possible extension queue 3469. Compared 533021 event pairs, 10518 based on Foata normal form. 1/51752 useless extension candidates. Maximal degree in co-relation 310674. Up to 28475 conditions per place. [2023-08-31 01:21:07,396 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1380 selfloop transitions, 179 changer transitions 7/1566 dead transitions. [2023-08-31 01:21:07,396 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 1566 transitions, 26504 flow [2023-08-31 01:21:07,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:21:07,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:21:07,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3964 transitions. [2023-08-31 01:21:07,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4139515455304929 [2023-08-31 01:21:07,400 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3964 transitions. [2023-08-31 01:21:07,400 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3964 transitions. [2023-08-31 01:21:07,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:21:07,401 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3964 transitions. [2023-08-31 01:21:07,404 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 440.44444444444446) internal successors, (3964), 9 states have internal predecessors, (3964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:07,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:07,408 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:07,408 INFO L175 Difference]: Start difference. First operand has 246 places, 1010 transitions, 15941 flow. Second operand 9 states and 3964 transitions. [2023-08-31 01:21:07,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 1566 transitions, 26504 flow [2023-08-31 01:21:24,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 1566 transitions, 26229 flow, removed 69 selfloop flow, removed 2 redundant places. [2023-08-31 01:21:24,517 INFO L231 Difference]: Finished difference. Result has 256 places, 1038 transitions, 16780 flow [2023-08-31 01:21:24,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=15709, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1010, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16780, PETRI_PLACES=256, PETRI_TRANSITIONS=1038} [2023-08-31 01:21:24,519 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 214 predicate places. [2023-08-31 01:21:24,519 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 1038 transitions, 16780 flow [2023-08-31 01:21:24,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:24,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:21:24,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:21:24,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-31 01:21:24,521 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:21:24,521 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:21:24,522 INFO L85 PathProgramCache]: Analyzing trace with hash 178866192, now seen corresponding path program 14 times [2023-08-31 01:21:24,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:21:24,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951371854] [2023-08-31 01:21:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:21:24,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:21:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:21:25,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:21:25,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:21:25,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951371854] [2023-08-31 01:21:25,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951371854] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:21:25,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:21:25,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:21:25,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503566234] [2023-08-31 01:21:25,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:21:25,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:21:25,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:21:25,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:21:25,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:21:25,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:21:25,421 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 1038 transitions, 16780 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:25,421 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:21:25,421 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:21:25,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:21:43,598 INFO L130 PetriNetUnfolder]: 27657/51743 cut-off events. [2023-08-31 01:21:43,598 INFO L131 PetriNetUnfolder]: For 624318/624318 co-relation queries the response was YES. [2023-08-31 01:21:44,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312034 conditions, 51743 events. 27657/51743 cut-off events. For 624318/624318 co-relation queries the response was YES. Maximal size of possible extension queue 3489. Compared 532246 event pairs, 11057 based on Foata normal form. 1/51743 useless extension candidates. Maximal degree in co-relation 311930. Up to 28475 conditions per place. [2023-08-31 01:21:44,683 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1267 selfloop transitions, 197 changer transitions 7/1471 dead transitions. [2023-08-31 01:21:44,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 1471 transitions, 25457 flow [2023-08-31 01:21:44,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:21:44,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:21:44,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3951 transitions. [2023-08-31 01:21:44,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.412593984962406 [2023-08-31 01:21:44,687 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3951 transitions. [2023-08-31 01:21:44,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3951 transitions. [2023-08-31 01:21:44,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:21:44,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3951 transitions. [2023-08-31 01:21:44,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 439.0) internal successors, (3951), 9 states have internal predecessors, (3951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:44,694 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:44,694 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:21:44,694 INFO L175 Difference]: Start difference. First operand has 256 places, 1038 transitions, 16780 flow. Second operand 9 states and 3951 transitions. [2023-08-31 01:21:44,694 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 1471 transitions, 25457 flow [2023-08-31 01:22:00,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 1471 transitions, 25137 flow, removed 47 selfloop flow, removed 3 redundant places. [2023-08-31 01:22:00,896 INFO L231 Difference]: Finished difference. Result has 262 places, 1039 transitions, 16931 flow [2023-08-31 01:22:00,897 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=16490, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1038, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=195, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=841, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=16931, PETRI_PLACES=262, PETRI_TRANSITIONS=1039} [2023-08-31 01:22:00,897 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 220 predicate places. [2023-08-31 01:22:00,897 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 1039 transitions, 16931 flow [2023-08-31 01:22:00,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:00,898 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:22:00,898 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:22:00,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-31 01:22:00,898 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:22:00,898 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:22:00,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1617919318, now seen corresponding path program 15 times [2023-08-31 01:22:00,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:22:00,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52081535] [2023-08-31 01:22:00,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:22:00,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:22:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:22:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:22:01,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:22:01,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52081535] [2023-08-31 01:22:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52081535] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:22:01,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:22:01,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:22:01,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83829449] [2023-08-31 01:22:01,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:22:01,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:22:01,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:22:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:22:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:22:01,871 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:22:01,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 1039 transitions, 16931 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:01,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:22:01,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:22:01,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:22:18,678 INFO L130 PetriNetUnfolder]: 27653/51739 cut-off events. [2023-08-31 01:22:18,679 INFO L131 PetriNetUnfolder]: For 631949/631949 co-relation queries the response was YES. [2023-08-31 01:22:19,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 312748 conditions, 51739 events. 27653/51739 cut-off events. For 631949/631949 co-relation queries the response was YES. Maximal size of possible extension queue 3468. Compared 532242 event pairs, 11139 based on Foata normal form. 1/51739 useless extension candidates. Maximal degree in co-relation 312643. Up to 28475 conditions per place. [2023-08-31 01:22:19,857 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1386 selfloop transitions, 200 changer transitions 7/1593 dead transitions. [2023-08-31 01:22:19,857 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 1593 transitions, 27300 flow [2023-08-31 01:22:19,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:22:19,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:22:19,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3975 transitions. [2023-08-31 01:22:19,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4151002506265664 [2023-08-31 01:22:19,862 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3975 transitions. [2023-08-31 01:22:19,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3975 transitions. [2023-08-31 01:22:19,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:22:19,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3975 transitions. [2023-08-31 01:22:19,866 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 441.6666666666667) internal successors, (3975), 9 states have internal predecessors, (3975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:19,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:19,871 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:19,871 INFO L175 Difference]: Start difference. First operand has 262 places, 1039 transitions, 16931 flow. Second operand 9 states and 3975 transitions. [2023-08-31 01:22:19,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 1593 transitions, 27300 flow [2023-08-31 01:22:35,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 1593 transitions, 27051 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-31 01:22:35,921 INFO L231 Difference]: Finished difference. Result has 272 places, 1073 transitions, 18068 flow [2023-08-31 01:22:35,921 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=16727, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1039, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=166, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=855, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=18068, PETRI_PLACES=272, PETRI_TRANSITIONS=1073} [2023-08-31 01:22:35,922 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 230 predicate places. [2023-08-31 01:22:35,922 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 1073 transitions, 18068 flow [2023-08-31 01:22:35,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:35,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:22:35,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:22:35,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-31 01:22:35,923 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:22:35,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:22:35,923 INFO L85 PathProgramCache]: Analyzing trace with hash 841868078, now seen corresponding path program 16 times [2023-08-31 01:22:35,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:22:35,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128850947] [2023-08-31 01:22:35,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:22:35,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:22:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:22:36,490 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:22:36,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:22:36,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128850947] [2023-08-31 01:22:36,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128850947] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:22:36,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:22:36,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:22:36,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047313376] [2023-08-31 01:22:36,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:22:36,492 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:22:36,492 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:22:36,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:22:36,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:22:37,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:22:37,187 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 1073 transitions, 18068 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:37,187 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:22:37,187 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:22:37,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:22:55,253 INFO L130 PetriNetUnfolder]: 27875/52445 cut-off events. [2023-08-31 01:22:55,254 INFO L131 PetriNetUnfolder]: For 671717/671717 co-relation queries the response was YES. [2023-08-31 01:22:56,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 318576 conditions, 52445 events. 27875/52445 cut-off events. For 671717/671717 co-relation queries the response was YES. Maximal size of possible extension queue 3518. Compared 543510 event pairs, 10474 based on Foata normal form. 1/52445 useless extension candidates. Maximal degree in co-relation 318466. Up to 28475 conditions per place. [2023-08-31 01:22:56,675 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1335 selfloop transitions, 268 changer transitions 7/1610 dead transitions. [2023-08-31 01:22:56,676 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 1610 transitions, 28418 flow [2023-08-31 01:22:56,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:22:56,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:22:56,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3947 transitions. [2023-08-31 01:22:56,680 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121762740183793 [2023-08-31 01:22:56,680 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3947 transitions. [2023-08-31 01:22:56,680 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3947 transitions. [2023-08-31 01:22:56,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:22:56,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3947 transitions. [2023-08-31 01:22:56,683 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 438.55555555555554) internal successors, (3947), 9 states have internal predecessors, (3947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:56,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:56,687 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:22:56,687 INFO L175 Difference]: Start difference. First operand has 272 places, 1073 transitions, 18068 flow. Second operand 9 states and 3947 transitions. [2023-08-31 01:22:56,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 1610 transitions, 28418 flow [2023-08-31 01:23:15,060 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 1610 transitions, 28065 flow, removed 55 selfloop flow, removed 3 redundant places. [2023-08-31 01:23:15,078 INFO L231 Difference]: Finished difference. Result has 282 places, 1130 transitions, 19945 flow [2023-08-31 01:23:15,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=17752, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1073, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=211, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=805, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=19945, PETRI_PLACES=282, PETRI_TRANSITIONS=1130} [2023-08-31 01:23:15,079 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 240 predicate places. [2023-08-31 01:23:15,079 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 1130 transitions, 19945 flow [2023-08-31 01:23:15,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:23:15,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:23:15,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:23:15,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-31 01:23:15,080 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:23:15,080 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:23:15,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1896731414, now seen corresponding path program 17 times [2023-08-31 01:23:15,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:23:15,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53720239] [2023-08-31 01:23:15,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:23:15,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:23:15,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:23:15,808 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:23:15,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:23:15,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53720239] [2023-08-31 01:23:15,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53720239] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:23:15,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:23:15,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-08-31 01:23:15,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322057312] [2023-08-31 01:23:15,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:23:15,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-31 01:23:15,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:23:15,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-31 01:23:15,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-08-31 01:23:16,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 409 out of 1064 [2023-08-31 01:23:16,543 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 1130 transitions, 19945 flow. Second operand has 11 states, 11 states have (on average 412.1818181818182) internal successors, (4534), 11 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:23:16,543 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:23:16,543 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 409 of 1064 [2023-08-31 01:23:16,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:23:35,780 INFO L130 PetriNetUnfolder]: 28076/52886 cut-off events. [2023-08-31 01:23:35,780 INFO L131 PetriNetUnfolder]: For 727779/727779 co-relation queries the response was YES. [2023-08-31 01:23:37,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 325856 conditions, 52886 events. 28076/52886 cut-off events. For 727779/727779 co-relation queries the response was YES. Maximal size of possible extension queue 3569. Compared 549961 event pairs, 10597 based on Foata normal form. 1/52886 useless extension candidates. Maximal degree in co-relation 325741. Up to 28484 conditions per place. [2023-08-31 01:23:37,356 INFO L137 encePairwiseOnDemand]: 1048/1064 looper letters, 1279 selfloop transitions, 284 changer transitions 8/1571 dead transitions. [2023-08-31 01:23:37,356 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 1571 transitions, 28576 flow [2023-08-31 01:23:37,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-31 01:23:37,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-31 01:23:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 4673 transitions. [2023-08-31 01:23:37,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39926520847573477 [2023-08-31 01:23:37,360 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 4673 transitions. [2023-08-31 01:23:37,360 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 4673 transitions. [2023-08-31 01:23:37,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:23:37,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 4673 transitions. [2023-08-31 01:23:37,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 424.8181818181818) internal successors, (4673), 11 states have internal predecessors, (4673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:23:37,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:23:37,368 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 1064.0) internal successors, (12768), 12 states have internal predecessors, (12768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:23:37,368 INFO L175 Difference]: Start difference. First operand has 282 places, 1130 transitions, 19945 flow. Second operand 11 states and 4673 transitions. [2023-08-31 01:23:37,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 1571 transitions, 28576 flow [2023-08-31 01:23:56,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 1571 transitions, 28286 flow, removed 29 selfloop flow, removed 3 redundant places. [2023-08-31 01:23:56,500 INFO L231 Difference]: Finished difference. Result has 295 places, 1208 transitions, 21795 flow [2023-08-31 01:23:56,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=19685, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=864, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=21795, PETRI_PLACES=295, PETRI_TRANSITIONS=1208} [2023-08-31 01:23:56,501 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2023-08-31 01:23:56,501 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1208 transitions, 21795 flow [2023-08-31 01:23:56,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 412.1818181818182) internal successors, (4534), 11 states have internal predecessors, (4534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:23:56,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:23:56,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:23:56,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-31 01:23:56,502 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:23:56,502 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:23:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash -857679955, now seen corresponding path program 2 times [2023-08-31 01:23:56,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:23:56,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951425315] [2023-08-31 01:23:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:23:56,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:23:56,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:23:56,629 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:23:56,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:23:56,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951425315] [2023-08-31 01:23:56,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951425315] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:23:56,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:23:56,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-31 01:23:56,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533892592] [2023-08-31 01:23:56,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:23:56,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-31 01:23:56,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:23:56,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-31 01:23:56,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-31 01:23:56,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 452 out of 1064 [2023-08-31 01:23:56,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1208 transitions, 21795 flow. Second operand has 3 states, 3 states have (on average 463.6666666666667) internal successors, (1391), 3 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:23:56,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:23:56,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 452 of 1064 [2023-08-31 01:23:56,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:24:16,401 INFO L130 PetriNetUnfolder]: 29540/54072 cut-off events. [2023-08-31 01:24:16,401 INFO L131 PetriNetUnfolder]: For 791159/791159 co-relation queries the response was YES. [2023-08-31 01:24:17,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340719 conditions, 54072 events. 29540/54072 cut-off events. For 791159/791159 co-relation queries the response was YES. Maximal size of possible extension queue 3456. Compared 544532 event pairs, 9515 based on Foata normal form. 622/54693 useless extension candidates. Maximal degree in co-relation 340598. Up to 29781 conditions per place. [2023-08-31 01:24:17,792 INFO L137 encePairwiseOnDemand]: 1059/1064 looper letters, 1526 selfloop transitions, 146 changer transitions 0/1672 dead transitions. [2023-08-31 01:24:17,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 1672 transitions, 32781 flow [2023-08-31 01:24:17,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-31 01:24:17,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-31 01:24:17,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1424 transitions. [2023-08-31 01:24:17,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44611528822055135 [2023-08-31 01:24:17,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1424 transitions. [2023-08-31 01:24:17,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1424 transitions. [2023-08-31 01:24:17,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:24:17,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1424 transitions. [2023-08-31 01:24:17,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 474.6666666666667) internal successors, (1424), 3 states have internal predecessors, (1424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:24:17,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:24:17,797 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1064.0) internal successors, (4256), 4 states have internal predecessors, (4256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:24:17,797 INFO L175 Difference]: Start difference. First operand has 295 places, 1208 transitions, 21795 flow. Second operand 3 states and 1424 transitions. [2023-08-31 01:24:17,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 1672 transitions, 32781 flow [2023-08-31 01:24:37,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 1672 transitions, 32373 flow, removed 74 selfloop flow, removed 3 redundant places. [2023-08-31 01:24:37,092 INFO L231 Difference]: Finished difference. Result has 295 places, 1220 transitions, 22459 flow [2023-08-31 01:24:37,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=20509, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1015, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=22459, PETRI_PLACES=295, PETRI_TRANSITIONS=1220} [2023-08-31 01:24:37,093 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 253 predicate places. [2023-08-31 01:24:37,094 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 1220 transitions, 22459 flow [2023-08-31 01:24:37,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 463.6666666666667) internal successors, (1391), 3 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:24:37,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:24:37,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:24:37,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2023-08-31 01:24:37,095 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:24:37,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:24:37,095 INFO L85 PathProgramCache]: Analyzing trace with hash -342469808, now seen corresponding path program 18 times [2023-08-31 01:24:37,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:24:37,095 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770399746] [2023-08-31 01:24:37,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:24:37,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:24:37,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:24:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:24:37,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:24:37,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770399746] [2023-08-31 01:24:37,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770399746] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:24:37,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:24:37,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:24:37,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582031553] [2023-08-31 01:24:37,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:24:37,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:24:37,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:24:37,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:24:37,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:24:38,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:24:38,180 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 1220 transitions, 22459 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:24:38,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:24:38,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:24:38,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-31 01:24:58,602 INFO L130 PetriNetUnfolder]: 29540/54071 cut-off events. [2023-08-31 01:24:58,602 INFO L131 PetriNetUnfolder]: For 793426/793426 co-relation queries the response was YES. [2023-08-31 01:24:59,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345839 conditions, 54071 events. 29540/54071 cut-off events. For 793426/793426 co-relation queries the response was YES. Maximal size of possible extension queue 3439. Compared 544433 event pairs, 10963 based on Foata normal form. 1/54071 useless extension candidates. Maximal degree in co-relation 345718. Up to 30908 conditions per place. [2023-08-31 01:24:59,989 INFO L137 encePairwiseOnDemand]: 1054/1064 looper letters, 1294 selfloop transitions, 273 changer transitions 7/1574 dead transitions. [2023-08-31 01:24:59,989 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 1574 transitions, 30174 flow [2023-08-31 01:24:59,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-31 01:24:59,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-31 01:24:59,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 3944 transitions. [2023-08-31 01:24:59,992 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4118629908103592 [2023-08-31 01:24:59,992 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 3944 transitions. [2023-08-31 01:24:59,992 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 3944 transitions. [2023-08-31 01:24:59,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-31 01:24:59,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 3944 transitions. [2023-08-31 01:24:59,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 438.22222222222223) internal successors, (3944), 9 states have internal predecessors, (3944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:25:00,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:25:00,002 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 1064.0) internal successors, (10640), 10 states have internal predecessors, (10640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:25:00,002 INFO L175 Difference]: Start difference. First operand has 295 places, 1220 transitions, 22459 flow. Second operand 9 states and 3944 transitions. [2023-08-31 01:25:00,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 1574 transitions, 30174 flow [2023-08-31 01:25:20,366 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 1574 transitions, 29829 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-31 01:25:20,386 INFO L231 Difference]: Finished difference. Result has 304 places, 1235 transitions, 23219 flow [2023-08-31 01:25:20,387 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1064, PETRI_DIFFERENCE_MINUEND_FLOW=22125, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=258, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=947, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=23219, PETRI_PLACES=304, PETRI_TRANSITIONS=1235} [2023-08-31 01:25:20,387 INFO L281 CegarLoopForPetriNet]: 42 programPoint places, 262 predicate places. [2023-08-31 01:25:20,387 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 1235 transitions, 23219 flow [2023-08-31 01:25:20,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:25:20,388 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-31 01:25:20,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-31 01:25:20,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2023-08-31 01:25:20,388 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-31 01:25:20,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-31 01:25:20,389 INFO L85 PathProgramCache]: Analyzing trace with hash 144662842, now seen corresponding path program 19 times [2023-08-31 01:25:20,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-31 01:25:20,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559737759] [2023-08-31 01:25:20,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-31 01:25:20,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-31 01:25:20,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-31 01:25:20,981 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-31 01:25:20,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-31 01:25:20,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559737759] [2023-08-31 01:25:20,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559737759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-31 01:25:20,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-31 01:25:20,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-31 01:25:20,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731150960] [2023-08-31 01:25:20,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-31 01:25:20,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-31 01:25:20,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-31 01:25:20,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-31 01:25:20,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2023-08-31 01:25:21,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 423 out of 1064 [2023-08-31 01:25:21,577 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 1235 transitions, 23219 flow. Second operand has 9 states, 9 states have (on average 426.8888888888889) internal successors, (3842), 9 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-31 01:25:21,577 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-31 01:25:21,577 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 423 of 1064 [2023-08-31 01:25:21,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand