./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-node-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-node-symm.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:26:48,077 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:26:48,079 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:26:48,105 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:26:48,105 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:26:48,106 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:26:48,107 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:26:48,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:26:48,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:26:48,111 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:26:48,112 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:26:48,113 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:26:48,113 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:26:48,114 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:26:48,115 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:26:48,116 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:26:48,117 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:26:48,118 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:26:48,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:26:48,121 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:26:48,122 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:26:48,123 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:26:48,124 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:26:48,125 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:26:48,126 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:26:48,128 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:26:48,129 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:26:48,129 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:26:48,130 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:26:48,130 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:26:48,131 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:26:48,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:26:48,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:26:48,133 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:26:48,133 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:26:48,134 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:26:48,135 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:26:48,135 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:26:48,135 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:26:48,136 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:26:48,137 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:26:48,137 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:26:48,138 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:26:48,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:26:48,158 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:26:48,158 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:26:48,159 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:26:48,159 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:26:48,159 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:26:48,160 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:26:48,160 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:26:48,160 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:26:48,161 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:26:48,161 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:26:48,161 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:26:48,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:26:48,162 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:26:48,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:26:48,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:26:48,162 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:26:48,162 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:26:48,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:26:48,163 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:26:48,163 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:26:48,163 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:26:48,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:26:48,164 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:26:48,164 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:26:48,164 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:26:48,164 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:26:48,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:26:48,165 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:26:48,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:26:48,165 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:26:48,166 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:26:48,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:26:48,166 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 514e162b13bdcbe99106b4f79e5a61b8afdae9b478788e06b35106cd952df62f [2022-07-19 21:26:48,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:26:48,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:26:48,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:26:48,413 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:26:48,414 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:26:48,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-07-19 21:26:48,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13895e526/ad80469df1d24ec3bd603dddb0f8171a/FLAG688d36ba9 [2022-07-19 21:26:48,838 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:26:48,838 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c [2022-07-19 21:26:48,844 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13895e526/ad80469df1d24ec3bd603dddb0f8171a/FLAG688d36ba9 [2022-07-19 21:26:49,250 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13895e526/ad80469df1d24ec3bd603dddb0f8171a [2022-07-19 21:26:49,252 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:26:49,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:26:49,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:26:49,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:26:49,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:26:49,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:26:49" (1/1) ... [2022-07-19 21:26:49,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e78d2b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:49, skipping insertion in model container [2022-07-19 21:26:49,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:26:49" (1/1) ... [2022-07-19 21:26:49,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:26:49,282 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:26:49,445 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-07-19 21:26:49,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:26:49,470 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:26:49,504 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-node-symm.wvr.c[3305,3318] [2022-07-19 21:26:49,511 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:26:49,523 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:26:49,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:49 WrapperNode [2022-07-19 21:26:49,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:26:49,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:26:49,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:26:49,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:26:49,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:49" (1/1) ... [2022-07-19 21:26:49,539 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:49" (1/1) ... [2022-07-19 21:26:49,567 INFO L137 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 314 [2022-07-19 21:26:49,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:26:49,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:26:49,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:26:49,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:26:49,576 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:49" (1/1) ... [2022-07-19 21:26:49,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:49" (1/1) ... [2022-07-19 21:26:49,581 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:49" (1/1) ... [2022-07-19 21:26:49,581 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:49" (1/1) ... [2022-07-19 21:26:49,600 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:49" (1/1) ... [2022-07-19 21:26:49,605 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:49" (1/1) ... [2022-07-19 21:26:49,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:49" (1/1) ... [2022-07-19 21:26:49,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:26:49,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:26:49,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:26:49,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:26:49,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:49" (1/1) ... [2022-07-19 21:26:49,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:26:49,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:26:49,643 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:26:49,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:26:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:26:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:26:49,673 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:26:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:26:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:26:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:26:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:26:49,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:26:49,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:26:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:26:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:26:49,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:26:49,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:26:49,677 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:26:49,762 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:26:49,764 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:26:50,195 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:26:50,214 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:26:50,215 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-19 21:26:50,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:26:50 BoogieIcfgContainer [2022-07-19 21:26:50,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:26:50,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:26:50,221 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:26:50,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:26:50,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:26:49" (1/3) ... [2022-07-19 21:26:50,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453d68fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:26:50, skipping insertion in model container [2022-07-19 21:26:50,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:26:49" (2/3) ... [2022-07-19 21:26:50,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@453d68fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:26:50, skipping insertion in model container [2022-07-19 21:26:50,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:26:50" (3/3) ... [2022-07-19 21:26:50,227 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-node-symm.wvr.c [2022-07-19 21:26:50,234 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:26:50,242 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:26:50,243 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:26:50,243 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:26:50,344 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:26:50,403 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 385 places, 414 transitions, 844 flow [2022-07-19 21:26:50,573 INFO L129 PetriNetUnfolder]: 36/412 cut-off events. [2022-07-19 21:26:50,573 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:26:50,581 INFO L84 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 412 events. 36/412 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 475 event pairs, 0 based on Foata normal form. 0/375 useless extension candidates. Maximal degree in co-relation 303. Up to 2 conditions per place. [2022-07-19 21:26:50,582 INFO L82 GeneralOperation]: Start removeDead. Operand has 385 places, 414 transitions, 844 flow [2022-07-19 21:26:50,594 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 374 places, 403 transitions, 818 flow [2022-07-19 21:26:50,615 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:26:50,623 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7cf83901, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@45f52979 [2022-07-19 21:26:50,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:26:50,687 INFO L129 PetriNetUnfolder]: 36/402 cut-off events. [2022-07-19 21:26:50,687 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:26:50,688 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:50,689 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:50,690 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:50,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:50,697 INFO L85 PathProgramCache]: Analyzing trace with hash -339291306, now seen corresponding path program 1 times [2022-07-19 21:26:50,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:50,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604350131] [2022-07-19 21:26:50,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:50,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:51,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:51,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604350131] [2022-07-19 21:26:51,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604350131] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:51,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:51,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 21:26:51,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468529800] [2022-07-19 21:26:51,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:51,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 21:26:51,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:51,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 21:26:51,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 21:26:51,148 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 389 out of 414 [2022-07-19 21:26:51,154 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 403 transitions, 818 flow. Second operand has 2 states, 2 states have (on average 391.5) internal successors, (783), 2 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:51,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 389 of 414 [2022-07-19 21:26:51,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:51,237 INFO L129 PetriNetUnfolder]: 16/383 cut-off events. [2022-07-19 21:26:51,237 INFO L130 PetriNetUnfolder]: For 8/9 co-relation queries the response was YES. [2022-07-19 21:26:51,241 INFO L84 FinitePrefix]: Finished finitePrefix Result has 397 conditions, 383 events. 16/383 cut-off events. For 8/9 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 463 event pairs, 0 based on Foata normal form. 21/372 useless extension candidates. Maximal degree in co-relation 287. Up to 5 conditions per place. [2022-07-19 21:26:51,244 INFO L132 encePairwiseOnDemand]: 394/414 looper letters, 4 selfloop transitions, 0 changer transitions 12/383 dead transitions. [2022-07-19 21:26:51,244 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 383 transitions, 786 flow [2022-07-19 21:26:51,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 21:26:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-07-19 21:26:51,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 802 transitions. [2022-07-19 21:26:51,266 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9685990338164251 [2022-07-19 21:26:51,267 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 802 transitions. [2022-07-19 21:26:51,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 802 transitions. [2022-07-19 21:26:51,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:51,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 802 transitions. [2022-07-19 21:26:51,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 401.0) internal successors, (802), 2 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,305 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 414.0) internal successors, (1242), 3 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,306 INFO L186 Difference]: Start difference. First operand has 374 places, 403 transitions, 818 flow. Second operand 2 states and 802 transitions. [2022-07-19 21:26:51,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 383 transitions, 786 flow [2022-07-19 21:26:51,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 371 places, 383 transitions, 778 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:26:51,323 INFO L242 Difference]: Finished difference. Result has 371 places, 371 transitions, 746 flow [2022-07-19 21:26:51,326 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=770, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=746, PETRI_PLACES=371, PETRI_TRANSITIONS=371} [2022-07-19 21:26:51,331 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, -3 predicate places. [2022-07-19 21:26:51,331 INFO L495 AbstractCegarLoop]: Abstraction has has 371 places, 371 transitions, 746 flow [2022-07-19 21:26:51,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 391.5) internal successors, (783), 2 states have internal predecessors, (783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,332 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:51,332 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:51,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:26:51,333 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:51,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:51,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2041905993, now seen corresponding path program 1 times [2022-07-19 21:26:51,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:51,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856099721] [2022-07-19 21:26:51,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:51,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:51,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:51,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:51,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:51,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856099721] [2022-07-19 21:26:51,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1856099721] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:51,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:51,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:51,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331292933] [2022-07-19 21:26:51,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:51,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:51,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:51,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:51,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:51,552 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 414 [2022-07-19 21:26:51,554 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 371 transitions, 746 flow. Second operand has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,554 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:51,554 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 414 [2022-07-19 21:26:51,554 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:51,700 INFO L129 PetriNetUnfolder]: 31/508 cut-off events. [2022-07-19 21:26:51,700 INFO L130 PetriNetUnfolder]: For 2/9 co-relation queries the response was YES. [2022-07-19 21:26:51,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 549 conditions, 508 events. 31/508 cut-off events. For 2/9 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1309 event pairs, 5 based on Foata normal form. 1/476 useless extension candidates. Maximal degree in co-relation 546. Up to 22 conditions per place. [2022-07-19 21:26:51,704 INFO L132 encePairwiseOnDemand]: 410/414 looper letters, 11 selfloop transitions, 3 changer transitions 0/374 dead transitions. [2022-07-19 21:26:51,704 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 374 transitions, 781 flow [2022-07-19 21:26:51,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:51,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1161 transitions. [2022-07-19 21:26:51,707 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9347826086956522 [2022-07-19 21:26:51,707 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1161 transitions. [2022-07-19 21:26:51,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1161 transitions. [2022-07-19 21:26:51,708 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:51,708 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1161 transitions. [2022-07-19 21:26:51,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,713 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,714 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,714 INFO L186 Difference]: Start difference. First operand has 371 places, 371 transitions, 746 flow. Second operand 3 states and 1161 transitions. [2022-07-19 21:26:51,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 374 transitions, 781 flow [2022-07-19 21:26:51,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 374 transitions, 781 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:51,723 INFO L242 Difference]: Finished difference. Result has 363 places, 373 transitions, 768 flow [2022-07-19 21:26:51,724 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=371, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=768, PETRI_PLACES=363, PETRI_TRANSITIONS=373} [2022-07-19 21:26:51,725 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, -11 predicate places. [2022-07-19 21:26:51,726 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 373 transitions, 768 flow [2022-07-19 21:26:51,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,727 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:51,727 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:51,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:26:51,728 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:51,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:51,728 INFO L85 PathProgramCache]: Analyzing trace with hash -520802165, now seen corresponding path program 1 times [2022-07-19 21:26:51,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:51,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421495063] [2022-07-19 21:26:51,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:51,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:51,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:51,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:51,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:51,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421495063] [2022-07-19 21:26:51,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421495063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:51,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:51,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:26:51,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834620054] [2022-07-19 21:26:51,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:51,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:26:51,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:51,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:26:51,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:26:51,857 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 382 out of 414 [2022-07-19 21:26:51,859 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 373 transitions, 768 flow. Second operand has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,859 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:51,859 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 382 of 414 [2022-07-19 21:26:51,860 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:51,952 INFO L129 PetriNetUnfolder]: 27/448 cut-off events. [2022-07-19 21:26:51,952 INFO L130 PetriNetUnfolder]: For 12/13 co-relation queries the response was YES. [2022-07-19 21:26:51,954 INFO L84 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 448 events. 27/448 cut-off events. For 12/13 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 795 event pairs, 5 based on Foata normal form. 0/418 useless extension candidates. Maximal degree in co-relation 488. Up to 22 conditions per place. [2022-07-19 21:26:51,956 INFO L132 encePairwiseOnDemand]: 410/414 looper letters, 11 selfloop transitions, 3 changer transitions 0/376 dead transitions. [2022-07-19 21:26:51,956 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 376 transitions, 803 flow [2022-07-19 21:26:51,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:26:51,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:26:51,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1161 transitions. [2022-07-19 21:26:51,961 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9347826086956522 [2022-07-19 21:26:51,961 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1161 transitions. [2022-07-19 21:26:51,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1161 transitions. [2022-07-19 21:26:51,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:51,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1161 transitions. [2022-07-19 21:26:51,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 387.0) internal successors, (1161), 3 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,968 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,969 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 414.0) internal successors, (1656), 4 states have internal predecessors, (1656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,969 INFO L186 Difference]: Start difference. First operand has 363 places, 373 transitions, 768 flow. Second operand 3 states and 1161 transitions. [2022-07-19 21:26:51,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 376 transitions, 803 flow [2022-07-19 21:26:51,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 376 transitions, 797 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:51,977 INFO L242 Difference]: Finished difference. Result has 365 places, 375 transitions, 784 flow [2022-07-19 21:26:51,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=361, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=370, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=784, PETRI_PLACES=365, PETRI_TRANSITIONS=375} [2022-07-19 21:26:51,980 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, -9 predicate places. [2022-07-19 21:26:51,980 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 375 transitions, 784 flow [2022-07-19 21:26:51,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 384.6666666666667) internal successors, (1154), 3 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:51,981 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:51,981 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:51,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:26:51,982 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:51,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:51,983 INFO L85 PathProgramCache]: Analyzing trace with hash 1693829105, now seen corresponding path program 1 times [2022-07-19 21:26:51,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:51,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298174972] [2022-07-19 21:26:51,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:51,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:52,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:52,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:52,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:52,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298174972] [2022-07-19 21:26:52,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298174972] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:52,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:52,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:52,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217413665] [2022-07-19 21:26:52,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:52,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:52,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:52,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:52,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:52,193 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-19 21:26:52,197 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 375 transitions, 784 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:52,198 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:52,198 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-19 21:26:52,198 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:54,441 INFO L129 PetriNetUnfolder]: 1682/8987 cut-off events. [2022-07-19 21:26:54,441 INFO L130 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2022-07-19 21:26:54,473 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12174 conditions, 8987 events. 1682/8987 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 294. Compared 102322 event pairs, 501 based on Foata normal form. 0/8427 useless extension candidates. Maximal degree in co-relation 12168. Up to 1102 conditions per place. [2022-07-19 21:26:54,509 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 242 selfloop transitions, 35 changer transitions 0/587 dead transitions. [2022-07-19 21:26:54,509 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 587 transitions, 1786 flow [2022-07-19 21:26:54,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 21:26:54,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-19 21:26:54,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 7823 transitions. [2022-07-19 21:26:54,527 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8215710985087167 [2022-07-19 21:26:54,528 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 7823 transitions. [2022-07-19 21:26:54,528 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 7823 transitions. [2022-07-19 21:26:54,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:54,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 7823 transitions. [2022-07-19 21:26:54,552 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 340.1304347826087) internal successors, (7823), 23 states have internal predecessors, (7823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:54,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:54,582 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:54,582 INFO L186 Difference]: Start difference. First operand has 365 places, 375 transitions, 784 flow. Second operand 23 states and 7823 transitions. [2022-07-19 21:26:54,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 587 transitions, 1786 flow [2022-07-19 21:26:54,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 385 places, 587 transitions, 1780 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-19 21:26:54,608 INFO L242 Difference]: Finished difference. Result has 404 places, 409 transitions, 1017 flow [2022-07-19 21:26:54,609 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=778, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1017, PETRI_PLACES=404, PETRI_TRANSITIONS=409} [2022-07-19 21:26:54,611 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 30 predicate places. [2022-07-19 21:26:54,611 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 409 transitions, 1017 flow [2022-07-19 21:26:54,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:54,614 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:54,614 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:54,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:26:54,614 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:54,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:54,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1184864045, now seen corresponding path program 2 times [2022-07-19 21:26:54,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:54,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871037603] [2022-07-19 21:26:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:54,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:54,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:54,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871037603] [2022-07-19 21:26:54,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871037603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:54,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:54,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:54,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074851376] [2022-07-19 21:26:54,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:54,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:54,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:54,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:54,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:54,809 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-19 21:26:54,813 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 409 transitions, 1017 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:54,813 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:54,813 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-19 21:26:54,813 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:26:57,830 INFO L129 PetriNetUnfolder]: 2176/12986 cut-off events. [2022-07-19 21:26:57,830 INFO L130 PetriNetUnfolder]: For 1873/1911 co-relation queries the response was YES. [2022-07-19 21:26:57,909 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19172 conditions, 12986 events. 2176/12986 cut-off events. For 1873/1911 co-relation queries the response was YES. Maximal size of possible extension queue 430. Compared 162632 event pairs, 108 based on Foata normal form. 4/12456 useless extension candidates. Maximal degree in co-relation 19147. Up to 1325 conditions per place. [2022-07-19 21:26:57,954 INFO L132 encePairwiseOnDemand]: 398/414 looper letters, 349 selfloop transitions, 48 changer transitions 0/707 dead transitions. [2022-07-19 21:26:57,955 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 707 transitions, 2917 flow [2022-07-19 21:26:57,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:26:57,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-19 21:26:57,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 9502 transitions. [2022-07-19 21:26:57,976 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8197032436162871 [2022-07-19 21:26:57,977 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 9502 transitions. [2022-07-19 21:26:57,977 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 9502 transitions. [2022-07-19 21:26:57,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:26:57,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 9502 transitions. [2022-07-19 21:26:58,011 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 339.35714285714283) internal successors, (9502), 28 states have internal predecessors, (9502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:58,032 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:58,036 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:58,036 INFO L186 Difference]: Start difference. First operand has 404 places, 409 transitions, 1017 flow. Second operand 28 states and 9502 transitions. [2022-07-19 21:26:58,037 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 707 transitions, 2917 flow [2022-07-19 21:26:58,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 707 transitions, 2917 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-19 21:26:58,071 INFO L242 Difference]: Finished difference. Result has 444 places, 444 transitions, 1340 flow [2022-07-19 21:26:58,072 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1017, PETRI_DIFFERENCE_MINUEND_PLACES=404, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=386, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1340, PETRI_PLACES=444, PETRI_TRANSITIONS=444} [2022-07-19 21:26:58,074 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 70 predicate places. [2022-07-19 21:26:58,075 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 444 transitions, 1340 flow [2022-07-19 21:26:58,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:58,077 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:26:58,077 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:26:58,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:26:58,077 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:26:58,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:26:58,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1960908911, now seen corresponding path program 3 times [2022-07-19 21:26:58,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:26:58,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020812369] [2022-07-19 21:26:58,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:26:58,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:26:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:26:58,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:26:58,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:26:58,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020812369] [2022-07-19 21:26:58,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020812369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:26:58,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:26:58,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:26:58,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151779637] [2022-07-19 21:26:58,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:26:58,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:26:58,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:26:58,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:26:58,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:26:58,272 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-19 21:26:58,276 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 444 transitions, 1340 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:26:58,276 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:26:58,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-19 21:26:58,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:01,875 INFO L129 PetriNetUnfolder]: 2824/17575 cut-off events. [2022-07-19 21:27:01,876 INFO L130 PetriNetUnfolder]: For 5957/6049 co-relation queries the response was YES. [2022-07-19 21:27:01,965 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27435 conditions, 17575 events. 2824/17575 cut-off events. For 5957/6049 co-relation queries the response was YES. Maximal size of possible extension queue 604. Compared 236043 event pairs, 513 based on Foata normal form. 38/16965 useless extension candidates. Maximal degree in co-relation 27396. Up to 1334 conditions per place. [2022-07-19 21:27:02,016 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 345 selfloop transitions, 67 changer transitions 0/722 dead transitions. [2022-07-19 21:27:02,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 722 transitions, 3291 flow [2022-07-19 21:27:02,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-19 21:27:02,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-07-19 21:27:02,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 9526 transitions. [2022-07-19 21:27:02,037 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8217736369910283 [2022-07-19 21:27:02,037 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 9526 transitions. [2022-07-19 21:27:02,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 9526 transitions. [2022-07-19 21:27:02,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:02,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 9526 transitions. [2022-07-19 21:27:02,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 340.2142857142857) internal successors, (9526), 28 states have internal predecessors, (9526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:02,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:02,077 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 414.0) internal successors, (12006), 29 states have internal predecessors, (12006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:02,078 INFO L186 Difference]: Start difference. First operand has 444 places, 444 transitions, 1340 flow. Second operand 28 states and 9526 transitions. [2022-07-19 21:27:02,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 722 transitions, 3291 flow [2022-07-19 21:27:02,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 722 transitions, 3099 flow, removed 24 selfloop flow, removed 5 redundant places. [2022-07-19 21:27:02,137 INFO L242 Difference]: Finished difference. Result has 479 places, 469 transitions, 1652 flow [2022-07-19 21:27:02,138 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1286, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=444, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=1652, PETRI_PLACES=479, PETRI_TRANSITIONS=469} [2022-07-19 21:27:02,140 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 105 predicate places. [2022-07-19 21:27:02,140 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 469 transitions, 1652 flow [2022-07-19 21:27:02,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:02,141 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:02,142 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:02,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:27:02,142 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:02,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:02,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1476650141, now seen corresponding path program 4 times [2022-07-19 21:27:02,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:02,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684607361] [2022-07-19 21:27:02,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:02,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:02,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:02,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:02,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684607361] [2022-07-19 21:27:02,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684607361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:02,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:02,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:27:02,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761454561] [2022-07-19 21:27:02,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:02,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:27:02,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:02,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:27:02,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:27:02,321 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-19 21:27:02,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 469 transitions, 1652 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:02,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:02,325 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-19 21:27:02,325 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:05,728 INFO L129 PetriNetUnfolder]: 2928/17954 cut-off events. [2022-07-19 21:27:05,728 INFO L130 PetriNetUnfolder]: For 11176/11310 co-relation queries the response was YES. [2022-07-19 21:27:05,817 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29599 conditions, 17954 events. 2928/17954 cut-off events. For 11176/11310 co-relation queries the response was YES. Maximal size of possible extension queue 628. Compared 240616 event pairs, 313 based on Foata normal form. 15/17294 useless extension candidates. Maximal degree in co-relation 29546. Up to 2866 conditions per place. [2022-07-19 21:27:05,864 INFO L132 encePairwiseOnDemand]: 398/414 looper letters, 262 selfloop transitions, 58 changer transitions 0/630 dead transitions. [2022-07-19 21:27:05,864 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 498 places, 630 transitions, 3245 flow [2022-07-19 21:27:05,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:27:05,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:27:05,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6768 transitions. [2022-07-19 21:27:05,876 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8173913043478261 [2022-07-19 21:27:05,876 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6768 transitions. [2022-07-19 21:27:05,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6768 transitions. [2022-07-19 21:27:05,878 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:05,878 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6768 transitions. [2022-07-19 21:27:05,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 338.4) internal successors, (6768), 20 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:05,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 414.0) internal successors, (8694), 21 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:05,901 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 414.0) internal successors, (8694), 21 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:05,901 INFO L186 Difference]: Start difference. First operand has 479 places, 469 transitions, 1652 flow. Second operand 20 states and 6768 transitions. [2022-07-19 21:27:05,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 498 places, 630 transitions, 3245 flow [2022-07-19 21:27:05,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 630 transitions, 3069 flow, removed 11 selfloop flow, removed 12 redundant places. [2022-07-19 21:27:05,990 INFO L242 Difference]: Finished difference. Result has 497 places, 484 transitions, 1916 flow [2022-07-19 21:27:05,991 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1557, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1916, PETRI_PLACES=497, PETRI_TRANSITIONS=484} [2022-07-19 21:27:05,992 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 123 predicate places. [2022-07-19 21:27:05,992 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 484 transitions, 1916 flow [2022-07-19 21:27:05,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:05,993 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:05,993 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:05,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:27:05,994 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:05,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:05,995 INFO L85 PathProgramCache]: Analyzing trace with hash 1039897095, now seen corresponding path program 5 times [2022-07-19 21:27:05,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:05,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507941813] [2022-07-19 21:27:05,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:05,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:06,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:06,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:06,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507941813] [2022-07-19 21:27:06,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507941813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:06,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:06,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:27:06,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629237931] [2022-07-19 21:27:06,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:06,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:27:06,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:06,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:27:06,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:27:06,146 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-19 21:27:06,149 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 484 transitions, 1916 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:06,149 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:06,149 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-19 21:27:06,149 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:09,802 INFO L129 PetriNetUnfolder]: 2922/17768 cut-off events. [2022-07-19 21:27:09,802 INFO L130 PetriNetUnfolder]: For 14799/14856 co-relation queries the response was YES. [2022-07-19 21:27:09,988 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30743 conditions, 17768 events. 2922/17768 cut-off events. For 14799/14856 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 237955 event pairs, 752 based on Foata normal form. 42/17138 useless extension candidates. Maximal degree in co-relation 30679. Up to 2134 conditions per place. [2022-07-19 21:27:10,049 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 293 selfloop transitions, 75 changer transitions 0/678 dead transitions. [2022-07-19 21:27:10,049 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 678 transitions, 3701 flow [2022-07-19 21:27:10,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 21:27:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-19 21:27:10,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 7817 transitions. [2022-07-19 21:27:10,060 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8209409787859694 [2022-07-19 21:27:10,060 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 7817 transitions. [2022-07-19 21:27:10,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 7817 transitions. [2022-07-19 21:27:10,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:10,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 7817 transitions. [2022-07-19 21:27:10,074 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 339.8695652173913) internal successors, (7817), 23 states have internal predecessors, (7817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,085 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,088 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 414.0) internal successors, (9936), 24 states have internal predecessors, (9936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,088 INFO L186 Difference]: Start difference. First operand has 497 places, 484 transitions, 1916 flow. Second operand 23 states and 7817 transitions. [2022-07-19 21:27:10,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 678 transitions, 3701 flow [2022-07-19 21:27:10,222 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 511 places, 678 transitions, 3496 flow, removed 49 selfloop flow, removed 8 redundant places. [2022-07-19 21:27:10,232 INFO L242 Difference]: Finished difference. Result has 517 places, 490 transitions, 2052 flow [2022-07-19 21:27:10,233 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1803, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=484, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=410, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=2052, PETRI_PLACES=517, PETRI_TRANSITIONS=490} [2022-07-19 21:27:10,235 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 143 predicate places. [2022-07-19 21:27:10,235 INFO L495 AbstractCegarLoop]: Abstraction has has 517 places, 490 transitions, 2052 flow [2022-07-19 21:27:10,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,236 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:10,237 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:10,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:27:10,238 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:10,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:10,239 INFO L85 PathProgramCache]: Analyzing trace with hash 859002869, now seen corresponding path program 6 times [2022-07-19 21:27:10,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:10,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545016467] [2022-07-19 21:27:10,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:10,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:10,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:10,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:10,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545016467] [2022-07-19 21:27:10,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545016467] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:10,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:10,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:27:10,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893539371] [2022-07-19 21:27:10,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:10,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:27:10,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:10,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:27:10,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:27:10,597 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-19 21:27:10,599 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 517 places, 490 transitions, 2052 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,599 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:10,599 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-19 21:27:10,600 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:14,273 INFO L129 PetriNetUnfolder]: 2989/18274 cut-off events. [2022-07-19 21:27:14,274 INFO L130 PetriNetUnfolder]: For 20654/20702 co-relation queries the response was YES. [2022-07-19 21:27:14,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32674 conditions, 18274 events. 2989/18274 cut-off events. For 20654/20702 co-relation queries the response was YES. Maximal size of possible extension queue 619. Compared 244814 event pairs, 390 based on Foata normal form. 12/17579 useless extension candidates. Maximal degree in co-relation 32604. Up to 3267 conditions per place. [2022-07-19 21:27:14,465 INFO L132 encePairwiseOnDemand]: 398/414 looper letters, 266 selfloop transitions, 66 changer transitions 0/642 dead transitions. [2022-07-19 21:27:14,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 536 places, 642 transitions, 3839 flow [2022-07-19 21:27:14,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:27:14,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:27:14,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 6765 transitions. [2022-07-19 21:27:14,472 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8170289855072463 [2022-07-19 21:27:14,472 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 6765 transitions. [2022-07-19 21:27:14,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 6765 transitions. [2022-07-19 21:27:14,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:14,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 6765 transitions. [2022-07-19 21:27:14,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 338.25) internal successors, (6765), 20 states have internal predecessors, (6765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 414.0) internal successors, (8694), 21 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,494 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 414.0) internal successors, (8694), 21 states have internal predecessors, (8694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,494 INFO L186 Difference]: Start difference. First operand has 517 places, 490 transitions, 2052 flow. Second operand 20 states and 6765 transitions. [2022-07-19 21:27:14,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 536 places, 642 transitions, 3839 flow [2022-07-19 21:27:14,651 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 642 transitions, 3616 flow, removed 21 selfloop flow, removed 13 redundant places. [2022-07-19 21:27:14,659 INFO L242 Difference]: Finished difference. Result has 534 places, 513 transitions, 2536 flow [2022-07-19 21:27:14,660 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=1930, PETRI_DIFFERENCE_MINUEND_PLACES=504, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2536, PETRI_PLACES=534, PETRI_TRANSITIONS=513} [2022-07-19 21:27:14,661 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 160 predicate places. [2022-07-19 21:27:14,661 INFO L495 AbstractCegarLoop]: Abstraction has has 534 places, 513 transitions, 2536 flow [2022-07-19 21:27:14,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,662 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:14,663 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:14,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:27:14,663 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:14,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:14,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1674883849, now seen corresponding path program 7 times [2022-07-19 21:27:14,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:14,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217913077] [2022-07-19 21:27:14,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:14,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:14,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:14,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:14,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217913077] [2022-07-19 21:27:14,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217913077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:14,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:14,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:27:14,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582115346] [2022-07-19 21:27:14,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:14,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:27:14,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:14,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:27:14,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:27:14,841 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-19 21:27:14,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 534 places, 513 transitions, 2536 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:14,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-19 21:27:14,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:19,133 INFO L129 PetriNetUnfolder]: 3058/19392 cut-off events. [2022-07-19 21:27:19,133 INFO L130 PetriNetUnfolder]: For 26271/26311 co-relation queries the response was YES. [2022-07-19 21:27:19,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 35001 conditions, 19392 events. 3058/19392 cut-off events. For 26271/26311 co-relation queries the response was YES. Maximal size of possible extension queue 660. Compared 264797 event pairs, 618 based on Foata normal form. 32/18687 useless extension candidates. Maximal degree in co-relation 34920. Up to 1307 conditions per place. [2022-07-19 21:27:19,469 INFO L132 encePairwiseOnDemand]: 395/414 looper letters, 353 selfloop transitions, 129 changer transitions 0/792 dead transitions. [2022-07-19 21:27:19,469 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 562 places, 792 transitions, 5128 flow [2022-07-19 21:27:19,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:27:19,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-19 21:27:19,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 9881 transitions. [2022-07-19 21:27:19,477 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8230051640846243 [2022-07-19 21:27:19,477 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 9881 transitions. [2022-07-19 21:27:19,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 9881 transitions. [2022-07-19 21:27:19,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:19,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 9881 transitions. [2022-07-19 21:27:19,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 340.7241379310345) internal successors, (9881), 29 states have internal predecessors, (9881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,517 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,520 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,521 INFO L186 Difference]: Start difference. First operand has 534 places, 513 transitions, 2536 flow. Second operand 29 states and 9881 transitions. [2022-07-19 21:27:19,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 562 places, 792 transitions, 5128 flow [2022-07-19 21:27:19,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 556 places, 792 transitions, 4833 flow, removed 107 selfloop flow, removed 6 redundant places. [2022-07-19 21:27:19,724 INFO L242 Difference]: Finished difference. Result has 568 places, 543 transitions, 2952 flow [2022-07-19 21:27:19,726 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=2315, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=406, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2952, PETRI_PLACES=568, PETRI_TRANSITIONS=543} [2022-07-19 21:27:19,727 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 194 predicate places. [2022-07-19 21:27:19,727 INFO L495 AbstractCegarLoop]: Abstraction has has 568 places, 543 transitions, 2952 flow [2022-07-19 21:27:19,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,728 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:19,729 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:19,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:27:19,729 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:19,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:19,730 INFO L85 PathProgramCache]: Analyzing trace with hash 549687077, now seen corresponding path program 8 times [2022-07-19 21:27:19,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:19,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418916202] [2022-07-19 21:27:19,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:19,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:19,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:19,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:19,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418916202] [2022-07-19 21:27:19,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418916202] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:19,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:19,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:27:19,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149461245] [2022-07-19 21:27:19,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:19,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:27:19,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:19,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:27:19,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:27:19,892 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-19 21:27:19,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 568 places, 543 transitions, 2952 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:19,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-19 21:27:19,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:24,958 INFO L129 PetriNetUnfolder]: 3753/22963 cut-off events. [2022-07-19 21:27:24,958 INFO L130 PetriNetUnfolder]: For 39453/39537 co-relation queries the response was YES. [2022-07-19 21:27:25,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 44410 conditions, 22963 events. 3753/22963 cut-off events. For 39453/39537 co-relation queries the response was YES. Maximal size of possible extension queue 779. Compared 322364 event pairs, 544 based on Foata normal form. 39/22142 useless extension candidates. Maximal degree in co-relation 44317. Up to 1736 conditions per place. [2022-07-19 21:27:25,345 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 376 selfloop transitions, 146 changer transitions 0/832 dead transitions. [2022-07-19 21:27:25,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 596 places, 832 transitions, 6095 flow [2022-07-19 21:27:25,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 21:27:25,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-19 21:27:25,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 9866 transitions. [2022-07-19 21:27:25,353 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8217557887722805 [2022-07-19 21:27:25,353 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 9866 transitions. [2022-07-19 21:27:25,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 9866 transitions. [2022-07-19 21:27:25,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:25,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 9866 transitions. [2022-07-19 21:27:25,369 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 340.2068965517241) internal successors, (9866), 29 states have internal predecessors, (9866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,383 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 414.0) internal successors, (12420), 30 states have internal predecessors, (12420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,384 INFO L186 Difference]: Start difference. First operand has 568 places, 543 transitions, 2952 flow. Second operand 29 states and 9866 transitions. [2022-07-19 21:27:25,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 596 places, 832 transitions, 6095 flow [2022-07-19 21:27:25,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 588 places, 832 transitions, 5867 flow, removed 27 selfloop flow, removed 8 redundant places. [2022-07-19 21:27:25,701 INFO L242 Difference]: Finished difference. Result has 611 places, 585 transitions, 3892 flow [2022-07-19 21:27:25,702 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=2786, PETRI_DIFFERENCE_MINUEND_PLACES=560, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=421, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=3892, PETRI_PLACES=611, PETRI_TRANSITIONS=585} [2022-07-19 21:27:25,702 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 237 predicate places. [2022-07-19 21:27:25,703 INFO L495 AbstractCegarLoop]: Abstraction has has 611 places, 585 transitions, 3892 flow [2022-07-19 21:27:25,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,703 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:25,704 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:25,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:27:25,704 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:25,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:25,705 INFO L85 PathProgramCache]: Analyzing trace with hash 1204322865, now seen corresponding path program 9 times [2022-07-19 21:27:25,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:25,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599412429] [2022-07-19 21:27:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:25,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:26,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:26,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:26,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599412429] [2022-07-19 21:27:26,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599412429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:26,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:26,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:27:26,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872287920] [2022-07-19 21:27:26,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:26,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:27:26,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:26,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:27:26,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:27:26,007 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-19 21:27:26,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 611 places, 585 transitions, 3892 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,009 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:26,009 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-19 21:27:26,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:31,858 INFO L129 PetriNetUnfolder]: 3740/23918 cut-off events. [2022-07-19 21:27:31,859 INFO L130 PetriNetUnfolder]: For 56109/56259 co-relation queries the response was YES. [2022-07-19 21:27:32,303 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47957 conditions, 23918 events. 3740/23918 cut-off events. For 56109/56259 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 340698 event pairs, 623 based on Foata normal form. 56/23109 useless extension candidates. Maximal degree in co-relation 47840. Up to 2154 conditions per place. [2022-07-19 21:27:32,589 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 394 selfloop transitions, 129 changer transitions 0/833 dead transitions. [2022-07-19 21:27:32,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 833 transitions, 6897 flow [2022-07-19 21:27:32,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 21:27:32,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-19 21:27:32,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 9189 transitions. [2022-07-19 21:27:32,596 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.822061191626409 [2022-07-19 21:27:32,596 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 9189 transitions. [2022-07-19 21:27:32,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 9189 transitions. [2022-07-19 21:27:32,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:32,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 9189 transitions. [2022-07-19 21:27:32,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 340.3333333333333) internal successors, (9189), 27 states have internal predecessors, (9189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:32,615 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 414.0) internal successors, (11592), 28 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:32,617 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 414.0) internal successors, (11592), 28 states have internal predecessors, (11592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:32,617 INFO L186 Difference]: Start difference. First operand has 611 places, 585 transitions, 3892 flow. Second operand 27 states and 9189 transitions. [2022-07-19 21:27:32,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 833 transitions, 6897 flow [2022-07-19 21:27:32,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 833 transitions, 6423 flow, removed 206 selfloop flow, removed 3 redundant places. [2022-07-19 21:27:32,973 INFO L242 Difference]: Finished difference. Result has 638 places, 590 transitions, 4025 flow [2022-07-19 21:27:32,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=3622, PETRI_DIFFERENCE_MINUEND_PLACES=608, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=585, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=458, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=4025, PETRI_PLACES=638, PETRI_TRANSITIONS=590} [2022-07-19 21:27:32,974 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 264 predicate places. [2022-07-19 21:27:32,975 INFO L495 AbstractCegarLoop]: Abstraction has has 638 places, 590 transitions, 4025 flow [2022-07-19 21:27:32,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:32,975 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:32,975 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:32,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:27:32,976 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:32,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:32,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1482036129, now seen corresponding path program 10 times [2022-07-19 21:27:32,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:32,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318123012] [2022-07-19 21:27:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:32,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:33,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:33,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318123012] [2022-07-19 21:27:33,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318123012] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:33,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:33,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:27:33,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606480752] [2022-07-19 21:27:33,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:33,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:27:33,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:33,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:27:33,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:27:33,113 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-19 21:27:33,115 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 638 places, 590 transitions, 4025 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:33,115 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:33,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-19 21:27:33,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:38,807 INFO L129 PetriNetUnfolder]: 3802/23100 cut-off events. [2022-07-19 21:27:38,807 INFO L130 PetriNetUnfolder]: For 52339/52453 co-relation queries the response was YES. [2022-07-19 21:27:39,347 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47849 conditions, 23100 events. 3802/23100 cut-off events. For 52339/52453 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 323845 event pairs, 526 based on Foata normal form. 43/22293 useless extension candidates. Maximal degree in co-relation 47728. Up to 1710 conditions per place. [2022-07-19 21:27:39,409 INFO L132 encePairwiseOnDemand]: 397/414 looper letters, 362 selfloop transitions, 143 changer transitions 0/815 dead transitions. [2022-07-19 21:27:39,410 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 815 transitions, 6787 flow [2022-07-19 21:27:39,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:27:39,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:27:39,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 8193 transitions. [2022-07-19 21:27:39,416 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8245772946859904 [2022-07-19 21:27:39,416 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 8193 transitions. [2022-07-19 21:27:39,416 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 8193 transitions. [2022-07-19 21:27:39,418 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:39,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 8193 transitions. [2022-07-19 21:27:39,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 341.375) internal successors, (8193), 24 states have internal predecessors, (8193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:39,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 414.0) internal successors, (10350), 25 states have internal predecessors, (10350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:39,435 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 414.0) internal successors, (10350), 25 states have internal predecessors, (10350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:39,435 INFO L186 Difference]: Start difference. First operand has 638 places, 590 transitions, 4025 flow. Second operand 24 states and 8193 transitions. [2022-07-19 21:27:39,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 815 transitions, 6787 flow [2022-07-19 21:27:39,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 641 places, 815 transitions, 6426 flow, removed 45 selfloop flow, removed 20 redundant places. [2022-07-19 21:27:39,816 INFO L242 Difference]: Finished difference. Result has 649 places, 602 transitions, 4420 flow [2022-07-19 21:27:39,817 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=414, PETRI_DIFFERENCE_MINUEND_FLOW=3784, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=4420, PETRI_PLACES=649, PETRI_TRANSITIONS=602} [2022-07-19 21:27:39,817 INFO L279 CegarLoopForPetriNet]: 374 programPoint places, 275 predicate places. [2022-07-19 21:27:39,817 INFO L495 AbstractCegarLoop]: Abstraction has has 649 places, 602 transitions, 4420 flow [2022-07-19 21:27:39,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:39,818 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:39,818 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:39,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:27:39,819 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:27:39,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:39,819 INFO L85 PathProgramCache]: Analyzing trace with hash -42145455, now seen corresponding path program 11 times [2022-07-19 21:27:39,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:39,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142563723] [2022-07-19 21:27:39,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:39,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:39,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:39,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:39,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:39,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142563723] [2022-07-19 21:27:39,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142563723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:39,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:39,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:27:39,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109309009] [2022-07-19 21:27:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:39,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:27:39,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:39,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:27:39,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:27:39,973 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 328 out of 414 [2022-07-19 21:27:39,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 649 places, 602 transitions, 4420 flow. Second operand has 11 states, 11 states have (on average 332.6363636363636) internal successors, (3659), 11 states have internal predecessors, (3659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:39,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:39,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 328 of 414 [2022-07-19 21:27:39,975 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand