./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-2_2-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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/ldv-races/race-2_2-container_of.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:27:45,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:27:45,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:27:45,375 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:27:45,375 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:27:45,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:27:45,380 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:27:45,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:27:45,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:27:45,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:27:45,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:27:45,390 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:27:45,390 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:27:45,393 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:27:45,394 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:27:45,395 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:27:45,396 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:27:45,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:27:45,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:27:45,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:27:45,407 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:27:45,408 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:27:45,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:27:45,409 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:27:45,411 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:27:45,416 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:27:45,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:27:45,417 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:27:45,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:27:45,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:27:45,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:27:45,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:27:45,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:27:45,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:27:45,422 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:27:45,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:27:45,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:27:45,423 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:27:45,423 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:27:45,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:27:45,424 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:27:45,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:27:45,426 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:27:45,451 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:27:45,451 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:27:45,451 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:27:45,451 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:27:45,452 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:27:45,452 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:27:45,452 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:27:45,452 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:27:45,452 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:27:45,452 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:27:45,452 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:27:45,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:27:45,453 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:27:45,453 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:27:45,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:27:45,453 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:27:45,453 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:27:45,453 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:27:45,453 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:27:45,453 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:27:45,453 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:27:45,453 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:27:45,454 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:27:45,454 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:27:45,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:27:45,454 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:27:45,454 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:27:45,454 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:27:45,454 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:27:45,454 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:27:45,454 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:27:45,454 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:27:45,454 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:27:45,455 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dbdd132d1a656eb04120c9309772a096548e218c86a32fc06dd93d5ae981c163 [2022-07-22 21:27:45,631 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:27:45,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:27:45,646 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:27:45,647 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:27:45,648 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:27:45,649 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-07-22 21:27:45,695 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d31c352f/56c3db64cb9049c083911a1eeddba1e6/FLAG1aaba52dd [2022-07-22 21:27:46,151 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:27:46,151 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-2_2-container_of.i [2022-07-22 21:27:46,174 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d31c352f/56c3db64cb9049c083911a1eeddba1e6/FLAG1aaba52dd [2022-07-22 21:27:46,189 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2d31c352f/56c3db64cb9049c083911a1eeddba1e6 [2022-07-22 21:27:46,191 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:27:46,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:27:46,195 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:27:46,195 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:27:46,197 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:27:46,198 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:27:46" (1/1) ... [2022-07-22 21:27:46,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab4d06e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:46, skipping insertion in model container [2022-07-22 21:27:46,199 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:27:46" (1/1) ... [2022-07-22 21:27:46,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:27:46,259 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:27:46,432 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:27:46,842 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/ldv-races/race-2_2-container_of.i[75002,75015] [2022-07-22 21:27:46,879 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:27:46,884 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:27:46,892 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:27:46,920 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/ldv-races/race-2_2-container_of.i[75002,75015] [2022-07-22 21:27:46,937 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:27:47,046 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:27:47,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:47 WrapperNode [2022-07-22 21:27:47,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:27:47,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:27:47,048 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:27:47,048 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:27:47,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:47" (1/1) ... [2022-07-22 21:27:47,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:47" (1/1) ... [2022-07-22 21:27:47,096 INFO L137 Inliner]: procedures = 468, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 115 [2022-07-22 21:27:47,097 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:27:47,097 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:27:47,098 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:27:47,098 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:27:47,103 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:47" (1/1) ... [2022-07-22 21:27:47,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:47" (1/1) ... [2022-07-22 21:27:47,120 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:47" (1/1) ... [2022-07-22 21:27:47,120 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:47" (1/1) ... [2022-07-22 21:27:47,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:47" (1/1) ... [2022-07-22 21:27:47,140 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:47" (1/1) ... [2022-07-22 21:27:47,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:47" (1/1) ... [2022-07-22 21:27:47,156 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:27:47,157 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:27:47,157 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:27:47,157 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:27:47,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:47" (1/1) ... [2022-07-22 21:27:47,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:27:47,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:27:47,182 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) [2022-07-22 21:27:47,200 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 [2022-07-22 21:27:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:27:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:27:47,215 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:27:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:27:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:27:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 21:27:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:27:47,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:27:47,216 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-07-22 21:27:47,216 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-07-22 21:27:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:27:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:27:47,217 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:27:47,218 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-22 21:27:47,391 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:27:47,392 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:27:47,566 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:27:47,593 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:27:47,593 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:27:47,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:27:47 BoogieIcfgContainer [2022-07-22 21:27:47,595 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:27:47,596 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:27:47,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:27:47,599 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:27:47,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:27:46" (1/3) ... [2022-07-22 21:27:47,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7794b3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:27:47, skipping insertion in model container [2022-07-22 21:27:47,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:47" (2/3) ... [2022-07-22 21:27:47,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7794b3e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:27:47, skipping insertion in model container [2022-07-22 21:27:47,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:27:47" (3/3) ... [2022-07-22 21:27:47,601 INFO L111 eAbstractionObserver]: Analyzing ICFG race-2_2-container_of.i [2022-07-22 21:27:47,605 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:27:47,611 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:27:47,612 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-07-22 21:27:47,612 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:27:47,666 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-22 21:27:47,702 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 163 places, 163 transitions, 342 flow [2022-07-22 21:27:47,788 INFO L129 PetriNetUnfolder]: 8/208 cut-off events. [2022-07-22 21:27:47,791 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:27:47,794 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 8/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 344 event pairs, 0 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 113. Up to 4 conditions per place. [2022-07-22 21:27:47,794 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 163 transitions, 342 flow [2022-07-22 21:27:47,799 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 149 transitions, 310 flow [2022-07-22 21:27:47,811 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:27:47,816 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@807b5f6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7630a1ca [2022-07-22 21:27:47,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-22 21:27:47,845 INFO L129 PetriNetUnfolder]: 0/102 cut-off events. [2022-07-22 21:27:47,845 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:27:47,845 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:47,846 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] [2022-07-22 21:27:47,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:27:47,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:47,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1084366875, now seen corresponding path program 1 times [2022-07-22 21:27:47,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:47,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598848863] [2022-07-22 21:27:47,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:47,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:48,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:48,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:48,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:48,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598848863] [2022-07-22 21:27:48,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598848863] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:48,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:48,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:27:48,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484346160] [2022-07-22 21:27:48,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:48,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:27:48,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:48,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:27:48,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:27:48,257 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2022-07-22 21:27:48,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 149 transitions, 310 flow. Second operand has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:48,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:48,261 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2022-07-22 21:27:48,262 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:48,770 INFO L129 PetriNetUnfolder]: 832/1897 cut-off events. [2022-07-22 21:27:48,770 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-07-22 21:27:48,776 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3382 conditions, 1897 events. 832/1897 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 11923 event pairs, 187 based on Foata normal form. 17/1861 useless extension candidates. Maximal degree in co-relation 3159. Up to 598 conditions per place. [2022-07-22 21:27:48,787 INFO L132 encePairwiseOnDemand]: 143/163 looper letters, 98 selfloop transitions, 44 changer transitions 0/233 dead transitions. [2022-07-22 21:27:48,787 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 233 transitions, 762 flow [2022-07-22 21:27:48,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 21:27:48,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-22 21:27:48,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1547 transitions. [2022-07-22 21:27:48,800 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6779141104294478 [2022-07-22 21:27:48,801 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1547 transitions. [2022-07-22 21:27:48,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1547 transitions. [2022-07-22 21:27:48,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:48,805 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1547 transitions. [2022-07-22 21:27:48,810 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 110.5) internal successors, (1547), 14 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:48,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:48,818 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 163.0) internal successors, (2445), 15 states have internal predecessors, (2445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:48,820 INFO L186 Difference]: Start difference. First operand has 151 places, 149 transitions, 310 flow. Second operand 14 states and 1547 transitions. [2022-07-22 21:27:48,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 233 transitions, 762 flow [2022-07-22 21:27:48,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 233 transitions, 754 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:27:48,827 INFO L242 Difference]: Finished difference. Result has 165 places, 182 transitions, 580 flow [2022-07-22 21:27:48,828 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=580, PETRI_PLACES=165, PETRI_TRANSITIONS=182} [2022-07-22 21:27:48,831 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 14 predicate places. [2022-07-22 21:27:48,831 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 182 transitions, 580 flow [2022-07-22 21:27:48,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.66666666666667) internal successors, (616), 6 states have internal predecessors, (616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:48,832 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:48,832 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] [2022-07-22 21:27:48,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:27:48,832 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:27:48,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:48,833 INFO L85 PathProgramCache]: Analyzing trace with hash 234520064, now seen corresponding path program 1 times [2022-07-22 21:27:48,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:48,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022842743] [2022-07-22 21:27:48,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:48,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:48,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:48,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:48,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022842743] [2022-07-22 21:27:48,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022842743] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:48,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:48,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:27:48,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299545931] [2022-07-22 21:27:48,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:48,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:27:48,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:48,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:27:48,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:27:48,978 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 163 [2022-07-22 21:27:48,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 182 transitions, 580 flow. Second operand has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:48,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:48,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 163 [2022-07-22 21:27:48,984 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:49,467 INFO L129 PetriNetUnfolder]: 1086/2489 cut-off events. [2022-07-22 21:27:49,467 INFO L130 PetriNetUnfolder]: For 10527/10625 co-relation queries the response was YES. [2022-07-22 21:27:49,472 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8859 conditions, 2489 events. 1086/2489 cut-off events. For 10527/10625 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 17182 event pairs, 249 based on Foata normal form. 47/2500 useless extension candidates. Maximal degree in co-relation 7868. Up to 841 conditions per place. [2022-07-22 21:27:49,483 INFO L132 encePairwiseOnDemand]: 148/163 looper letters, 70 selfloop transitions, 40 changer transitions 72/272 dead transitions. [2022-07-22 21:27:49,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 272 transitions, 1653 flow [2022-07-22 21:27:49,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:27:49,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:27:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1225 transitions. [2022-07-22 21:27:49,486 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.683212493028444 [2022-07-22 21:27:49,486 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1225 transitions. [2022-07-22 21:27:49,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1225 transitions. [2022-07-22 21:27:49,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:49,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1225 transitions. [2022-07-22 21:27:49,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 111.36363636363636) internal successors, (1225), 11 states have internal predecessors, (1225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:49,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:49,492 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 163.0) internal successors, (1956), 12 states have internal predecessors, (1956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:49,492 INFO L186 Difference]: Start difference. First operand has 165 places, 182 transitions, 580 flow. Second operand 11 states and 1225 transitions. [2022-07-22 21:27:49,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 272 transitions, 1653 flow [2022-07-22 21:27:49,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 272 transitions, 1653 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:27:49,510 INFO L242 Difference]: Finished difference. Result has 183 places, 185 transitions, 880 flow [2022-07-22 21:27:49,511 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=580, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=880, PETRI_PLACES=183, PETRI_TRANSITIONS=185} [2022-07-22 21:27:49,512 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 32 predicate places. [2022-07-22 21:27:49,512 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 185 transitions, 880 flow [2022-07-22 21:27:49,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 103.5) internal successors, (621), 6 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:49,513 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:49,513 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] [2022-07-22 21:27:49,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:27:49,513 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:27:49,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:49,514 INFO L85 PathProgramCache]: Analyzing trace with hash -701385000, now seen corresponding path program 1 times [2022-07-22 21:27:49,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:49,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061201854] [2022-07-22 21:27:49,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:49,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:49,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:49,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:49,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:49,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061201854] [2022-07-22 21:27:49,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061201854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:49,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:49,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:27:49,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090761308] [2022-07-22 21:27:49,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:49,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:27:49,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:49,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:27:49,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:27:49,594 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 163 [2022-07-22 21:27:49,595 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 185 transitions, 880 flow. Second operand has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:49,595 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:49,595 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 163 [2022-07-22 21:27:49,595 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:49,651 INFO L129 PetriNetUnfolder]: 50/290 cut-off events. [2022-07-22 21:27:49,651 INFO L130 PetriNetUnfolder]: For 1055/1175 co-relation queries the response was YES. [2022-07-22 21:27:49,652 INFO L84 FinitePrefix]: Finished finitePrefix Result has 735 conditions, 290 events. 50/290 cut-off events. For 1055/1175 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1085 event pairs, 15 based on Foata normal form. 0/272 useless extension candidates. Maximal degree in co-relation 716. Up to 31 conditions per place. [2022-07-22 21:27:49,653 INFO L132 encePairwiseOnDemand]: 158/163 looper letters, 19 selfloop transitions, 4 changer transitions 0/124 dead transitions. [2022-07-22 21:27:49,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 124 transitions, 396 flow [2022-07-22 21:27:49,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:27:49,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:27:49,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 852 transitions. [2022-07-22 21:27:49,656 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8711656441717791 [2022-07-22 21:27:49,656 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 852 transitions. [2022-07-22 21:27:49,656 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 852 transitions. [2022-07-22 21:27:49,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:49,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 852 transitions. [2022-07-22 21:27:49,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.0) internal successors, (852), 6 states have internal predecessors, (852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:49,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:49,659 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 163.0) internal successors, (1141), 7 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:49,659 INFO L186 Difference]: Start difference. First operand has 183 places, 185 transitions, 880 flow. Second operand 6 states and 852 transitions. [2022-07-22 21:27:49,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 124 transitions, 396 flow [2022-07-22 21:27:49,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 124 transitions, 306 flow, removed 40 selfloop flow, removed 15 redundant places. [2022-07-22 21:27:49,662 INFO L242 Difference]: Finished difference. Result has 129 places, 116 transitions, 252 flow [2022-07-22 21:27:49,663 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=252, PETRI_PLACES=129, PETRI_TRANSITIONS=116} [2022-07-22 21:27:49,663 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, -22 predicate places. [2022-07-22 21:27:49,663 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 116 transitions, 252 flow [2022-07-22 21:27:49,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.2) internal successors, (701), 5 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:49,664 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:49,664 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:27:49,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:27:49,664 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:27:49,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:49,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1541405648, now seen corresponding path program 1 times [2022-07-22 21:27:49,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:49,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219253516] [2022-07-22 21:27:49,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:49,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:50,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:50,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219253516] [2022-07-22 21:27:50,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219253516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:50,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:50,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-22 21:27:50,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628861204] [2022-07-22 21:27:50,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:50,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 21:27:50,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:50,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 21:27:50,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-07-22 21:27:50,609 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-07-22 21:27:50,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 116 transitions, 252 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:50,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:50,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-07-22 21:27:50,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:55,341 INFO L129 PetriNetUnfolder]: 1063/2292 cut-off events. [2022-07-22 21:27:55,341 INFO L130 PetriNetUnfolder]: For 229/229 co-relation queries the response was YES. [2022-07-22 21:27:55,344 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4660 conditions, 2292 events. 1063/2292 cut-off events. For 229/229 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 13794 event pairs, 10 based on Foata normal form. 0/2251 useless extension candidates. Maximal degree in co-relation 4652. Up to 402 conditions per place. [2022-07-22 21:27:55,351 INFO L132 encePairwiseOnDemand]: 133/163 looper letters, 226 selfloop transitions, 57 changer transitions 0/338 dead transitions. [2022-07-22 21:27:55,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 338 transitions, 1347 flow [2022-07-22 21:27:55,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 21:27:55,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-22 21:27:55,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 3134 transitions. [2022-07-22 21:27:55,357 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5196484828386669 [2022-07-22 21:27:55,357 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 3134 transitions. [2022-07-22 21:27:55,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 3134 transitions. [2022-07-22 21:27:55,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:55,359 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 3134 transitions. [2022-07-22 21:27:55,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 84.70270270270271) internal successors, (3134), 37 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:55,369 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 163.0) internal successors, (6194), 38 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:55,370 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 163.0) internal successors, (6194), 38 states have internal predecessors, (6194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:55,370 INFO L186 Difference]: Start difference. First operand has 129 places, 116 transitions, 252 flow. Second operand 37 states and 3134 transitions. [2022-07-22 21:27:55,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 338 transitions, 1347 flow [2022-07-22 21:27:55,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 338 transitions, 1340 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:27:55,376 INFO L242 Difference]: Finished difference. Result has 178 places, 163 transitions, 620 flow [2022-07-22 21:27:55,376 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=620, PETRI_PLACES=178, PETRI_TRANSITIONS=163} [2022-07-22 21:27:55,376 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 27 predicate places. [2022-07-22 21:27:55,377 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 163 transitions, 620 flow [2022-07-22 21:27:55,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:55,378 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:55,378 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:27:55,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:27:55,378 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:27:55,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:55,379 INFO L85 PathProgramCache]: Analyzing trace with hash 2122782190, now seen corresponding path program 2 times [2022-07-22 21:27:55,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:55,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411787522] [2022-07-22 21:27:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:55,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:55,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:55,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411787522] [2022-07-22 21:27:55,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411787522] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:55,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:55,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:27:55,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858475963] [2022-07-22 21:27:55,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:55,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:27:55,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:55,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:27:55,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:27:55,808 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-22 21:27:55,809 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 163 transitions, 620 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:55,809 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:55,809 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-22 21:27:55,809 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:57,122 INFO L129 PetriNetUnfolder]: 820/2254 cut-off events. [2022-07-22 21:27:57,122 INFO L130 PetriNetUnfolder]: For 2433/2531 co-relation queries the response was YES. [2022-07-22 21:27:57,127 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5942 conditions, 2254 events. 820/2254 cut-off events. For 2433/2531 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 16173 event pairs, 167 based on Foata normal form. 5/2157 useless extension candidates. Maximal degree in co-relation 5918. Up to 561 conditions per place. [2022-07-22 21:27:57,135 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 171 selfloop transitions, 43 changer transitions 0/286 dead transitions. [2022-07-22 21:27:57,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 286 transitions, 1638 flow [2022-07-22 21:27:57,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:27:57,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:27:57,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2022-07-22 21:27:57,139 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2022-07-22 21:27:57,139 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2022-07-22 21:27:57,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2022-07-22 21:27:57,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:57,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2022-07-22 21:27:57,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:57,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:57,147 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:57,148 INFO L186 Difference]: Start difference. First operand has 178 places, 163 transitions, 620 flow. Second operand 21 states and 1877 transitions. [2022-07-22 21:27:57,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 286 transitions, 1638 flow [2022-07-22 21:27:57,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 286 transitions, 1601 flow, removed 9 selfloop flow, removed 9 redundant places. [2022-07-22 21:27:57,157 INFO L242 Difference]: Finished difference. Result has 198 places, 187 transitions, 916 flow [2022-07-22 21:27:57,158 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=596, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=916, PETRI_PLACES=198, PETRI_TRANSITIONS=187} [2022-07-22 21:27:57,159 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 47 predicate places. [2022-07-22 21:27:57,159 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 187 transitions, 916 flow [2022-07-22 21:27:57,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:57,159 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:57,160 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:27:57,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:27:57,160 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:27:57,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:57,161 INFO L85 PathProgramCache]: Analyzing trace with hash 648824556, now seen corresponding path program 3 times [2022-07-22 21:27:57,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:57,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979468822] [2022-07-22 21:27:57,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:57,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:57,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:57,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:57,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979468822] [2022-07-22 21:27:57,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979468822] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:57,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:57,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:27:57,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312501530] [2022-07-22 21:27:57,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:57,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:27:57,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:57,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:27:57,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:27:57,539 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-22 21:27:57,540 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 187 transitions, 916 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:57,540 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:57,540 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-22 21:27:57,541 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:27:58,853 INFO L129 PetriNetUnfolder]: 1142/3253 cut-off events. [2022-07-22 21:27:58,853 INFO L130 PetriNetUnfolder]: For 4852/4957 co-relation queries the response was YES. [2022-07-22 21:27:58,862 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9027 conditions, 3253 events. 1142/3253 cut-off events. For 4852/4957 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 26413 event pairs, 362 based on Foata normal form. 5/3122 useless extension candidates. Maximal degree in co-relation 8993. Up to 1140 conditions per place. [2022-07-22 21:27:58,872 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 187 selfloop transitions, 51 changer transitions 0/310 dead transitions. [2022-07-22 21:27:58,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 310 transitions, 2061 flow [2022-07-22 21:27:58,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:27:58,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:27:58,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2022-07-22 21:27:58,876 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2022-07-22 21:27:58,876 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2022-07-22 21:27:58,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2022-07-22 21:27:58,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:27:58,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2022-07-22 21:27:58,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:58,883 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:58,884 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:58,884 INFO L186 Difference]: Start difference. First operand has 198 places, 187 transitions, 916 flow. Second operand 21 states and 1877 transitions. [2022-07-22 21:27:58,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 310 transitions, 2061 flow [2022-07-22 21:27:58,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 310 transitions, 2033 flow, removed 5 selfloop flow, removed 7 redundant places. [2022-07-22 21:27:58,901 INFO L242 Difference]: Finished difference. Result has 222 places, 213 transitions, 1304 flow [2022-07-22 21:27:58,902 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1304, PETRI_PLACES=222, PETRI_TRANSITIONS=213} [2022-07-22 21:27:58,902 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 71 predicate places. [2022-07-22 21:27:58,902 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 213 transitions, 1304 flow [2022-07-22 21:27:58,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:58,903 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:27:58,903 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:27:58,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:27:58,904 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:27:58,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:27:58,904 INFO L85 PathProgramCache]: Analyzing trace with hash 183204884, now seen corresponding path program 4 times [2022-07-22 21:27:58,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:27:58,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332737158] [2022-07-22 21:27:58,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:27:58,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:27:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:27:59,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:27:59,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:27:59,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332737158] [2022-07-22 21:27:59,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332737158] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:27:59,262 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:27:59,262 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:27:59,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103350578] [2022-07-22 21:27:59,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:27:59,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:27:59,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:27:59,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:27:59,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:27:59,264 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-22 21:27:59,265 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 213 transitions, 1304 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:27:59,265 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:27:59,265 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-22 21:27:59,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:00,490 INFO L129 PetriNetUnfolder]: 1180/3433 cut-off events. [2022-07-22 21:28:00,490 INFO L130 PetriNetUnfolder]: For 8270/8393 co-relation queries the response was YES. [2022-07-22 21:28:00,501 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10147 conditions, 3433 events. 1180/3433 cut-off events. For 8270/8393 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 28035 event pairs, 561 based on Foata normal form. 8/3294 useless extension candidates. Maximal degree in co-relation 10101. Up to 1535 conditions per place. [2022-07-22 21:28:00,512 INFO L132 encePairwiseOnDemand]: 142/163 looper letters, 180 selfloop transitions, 54 changer transitions 0/306 dead transitions. [2022-07-22 21:28:00,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 306 transitions, 2344 flow [2022-07-22 21:28:00,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:28:00,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:28:00,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1774 transitions. [2022-07-22 21:28:00,516 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5441717791411043 [2022-07-22 21:28:00,516 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1774 transitions. [2022-07-22 21:28:00,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1774 transitions. [2022-07-22 21:28:00,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:00,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1774 transitions. [2022-07-22 21:28:00,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 88.7) internal successors, (1774), 20 states have internal predecessors, (1774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:00,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 163.0) internal successors, (3423), 21 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:00,524 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 163.0) internal successors, (3423), 21 states have internal predecessors, (3423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:00,524 INFO L186 Difference]: Start difference. First operand has 222 places, 213 transitions, 1304 flow. Second operand 20 states and 1774 transitions. [2022-07-22 21:28:00,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 306 transitions, 2344 flow [2022-07-22 21:28:00,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 306 transitions, 2291 flow, removed 21 selfloop flow, removed 5 redundant places. [2022-07-22 21:28:00,549 INFO L242 Difference]: Finished difference. Result has 248 places, 233 transitions, 1658 flow [2022-07-22 21:28:00,549 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1254, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1658, PETRI_PLACES=248, PETRI_TRANSITIONS=233} [2022-07-22 21:28:00,550 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 97 predicate places. [2022-07-22 21:28:00,550 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 233 transitions, 1658 flow [2022-07-22 21:28:00,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:00,550 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:00,551 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:00,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:28:00,551 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:28:00,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:00,552 INFO L85 PathProgramCache]: Analyzing trace with hash 237013254, now seen corresponding path program 5 times [2022-07-22 21:28:00,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:00,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787565662] [2022-07-22 21:28:00,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:00,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:00,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:00,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787565662] [2022-07-22 21:28:00,938 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787565662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:00,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:00,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:28:00,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956707829] [2022-07-22 21:28:00,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:00,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:28:00,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:00,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:28:00,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:28:00,940 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-22 21:28:00,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 233 transitions, 1658 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:00,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:00,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-22 21:28:00,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:02,384 INFO L129 PetriNetUnfolder]: 1199/3520 cut-off events. [2022-07-22 21:28:02,384 INFO L130 PetriNetUnfolder]: For 11949/12100 co-relation queries the response was YES. [2022-07-22 21:28:02,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11212 conditions, 3520 events. 1199/3520 cut-off events. For 11949/12100 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 29116 event pairs, 139 based on Foata normal form. 7/3426 useless extension candidates. Maximal degree in co-relation 11153. Up to 821 conditions per place. [2022-07-22 21:28:02,407 INFO L132 encePairwiseOnDemand]: 139/163 looper letters, 172 selfloop transitions, 115 changer transitions 0/359 dead transitions. [2022-07-22 21:28:02,407 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 359 transitions, 3054 flow [2022-07-22 21:28:02,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:28:02,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:28:02,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1886 transitions. [2022-07-22 21:28:02,410 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5509786736780602 [2022-07-22 21:28:02,410 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1886 transitions. [2022-07-22 21:28:02,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1886 transitions. [2022-07-22 21:28:02,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:02,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1886 transitions. [2022-07-22 21:28:02,413 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.80952380952381) internal successors, (1886), 21 states have internal predecessors, (1886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:02,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:02,418 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:02,418 INFO L186 Difference]: Start difference. First operand has 248 places, 233 transitions, 1658 flow. Second operand 21 states and 1886 transitions. [2022-07-22 21:28:02,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 359 transitions, 3054 flow [2022-07-22 21:28:02,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 263 places, 359 transitions, 2975 flow, removed 35 selfloop flow, removed 5 redundant places. [2022-07-22 21:28:02,454 INFO L242 Difference]: Finished difference. Result has 270 places, 268 transitions, 2387 flow [2022-07-22 21:28:02,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=1579, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2387, PETRI_PLACES=270, PETRI_TRANSITIONS=268} [2022-07-22 21:28:02,455 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 119 predicate places. [2022-07-22 21:28:02,455 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 268 transitions, 2387 flow [2022-07-22 21:28:02,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:02,456 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:02,457 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:02,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:28:02,457 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:28:02,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:02,457 INFO L85 PathProgramCache]: Analyzing trace with hash 499604106, now seen corresponding path program 6 times [2022-07-22 21:28:02,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:02,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169581241] [2022-07-22 21:28:02,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:02,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:02,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:02,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:02,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169581241] [2022-07-22 21:28:02,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169581241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:02,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:02,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:28:02,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90660833] [2022-07-22 21:28:02,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:02,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:28:02,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:02,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:28:02,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:28:02,789 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-22 21:28:02,790 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 268 transitions, 2387 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:02,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:02,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-22 21:28:02,790 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:04,184 INFO L129 PetriNetUnfolder]: 1192/3600 cut-off events. [2022-07-22 21:28:04,185 INFO L130 PetriNetUnfolder]: For 16083/16206 co-relation queries the response was YES. [2022-07-22 21:28:04,206 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12377 conditions, 3600 events. 1192/3600 cut-off events. For 16083/16206 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 30131 event pairs, 331 based on Foata normal form. 9/3484 useless extension candidates. Maximal degree in co-relation 12311. Up to 1135 conditions per place. [2022-07-22 21:28:04,217 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 236 selfloop transitions, 71 changer transitions 0/379 dead transitions. [2022-07-22 21:28:04,217 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 379 transitions, 3865 flow [2022-07-22 21:28:04,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:28:04,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:28:04,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1877 transitions. [2022-07-22 21:28:04,219 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5483494011101373 [2022-07-22 21:28:04,220 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1877 transitions. [2022-07-22 21:28:04,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1877 transitions. [2022-07-22 21:28:04,220 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:04,220 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1877 transitions. [2022-07-22 21:28:04,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.38095238095238) internal successors, (1877), 21 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:04,226 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:04,226 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:04,227 INFO L186 Difference]: Start difference. First operand has 270 places, 268 transitions, 2387 flow. Second operand 21 states and 1877 transitions. [2022-07-22 21:28:04,227 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 379 transitions, 3865 flow [2022-07-22 21:28:04,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 379 transitions, 3745 flow, removed 43 selfloop flow, removed 9 redundant places. [2022-07-22 21:28:04,300 INFO L242 Difference]: Finished difference. Result has 291 places, 291 transitions, 2882 flow [2022-07-22 21:28:04,300 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2274, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=268, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2882, PETRI_PLACES=291, PETRI_TRANSITIONS=291} [2022-07-22 21:28:04,301 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 140 predicate places. [2022-07-22 21:28:04,301 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 291 transitions, 2882 flow [2022-07-22 21:28:04,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:04,302 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:04,302 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:04,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:28:04,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:28:04,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:04,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1963083982, now seen corresponding path program 7 times [2022-07-22 21:28:04,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:04,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383272218] [2022-07-22 21:28:04,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:04,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:04,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:04,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:04,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383272218] [2022-07-22 21:28:04,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383272218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:04,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:04,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-22 21:28:04,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498445888] [2022-07-22 21:28:04,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:04,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 21:28:04,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:04,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 21:28:04,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2022-07-22 21:28:04,906 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-07-22 21:28:04,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 291 transitions, 2882 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:04,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:04,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-07-22 21:28:04,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:08,633 INFO L129 PetriNetUnfolder]: 2724/6794 cut-off events. [2022-07-22 21:28:08,634 INFO L130 PetriNetUnfolder]: For 36169/36251 co-relation queries the response was YES. [2022-07-22 21:28:08,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24446 conditions, 6794 events. 2724/6794 cut-off events. For 36169/36251 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 58570 event pairs, 489 based on Foata normal form. 49/6716 useless extension candidates. Maximal degree in co-relation 24370. Up to 2285 conditions per place. [2022-07-22 21:28:08,695 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 404 selfloop transitions, 104 changer transitions 0/563 dead transitions. [2022-07-22 21:28:08,696 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 563 transitions, 6809 flow [2022-07-22 21:28:08,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:28:08,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:28:08,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2065 transitions. [2022-07-22 21:28:08,699 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5278629856850716 [2022-07-22 21:28:08,699 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2065 transitions. [2022-07-22 21:28:08,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2065 transitions. [2022-07-22 21:28:08,700 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:08,700 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2065 transitions. [2022-07-22 21:28:08,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.04166666666667) internal successors, (2065), 24 states have internal predecessors, (2065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:08,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:08,706 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:08,706 INFO L186 Difference]: Start difference. First operand has 291 places, 291 transitions, 2882 flow. Second operand 24 states and 2065 transitions. [2022-07-22 21:28:08,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 563 transitions, 6809 flow [2022-07-22 21:28:08,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 563 transitions, 6558 flow, removed 96 selfloop flow, removed 6 redundant places. [2022-07-22 21:28:08,848 INFO L242 Difference]: Finished difference. Result has 321 places, 342 transitions, 3850 flow [2022-07-22 21:28:08,848 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=2760, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=3850, PETRI_PLACES=321, PETRI_TRANSITIONS=342} [2022-07-22 21:28:08,849 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 170 predicate places. [2022-07-22 21:28:08,849 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 342 transitions, 3850 flow [2022-07-22 21:28:08,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:08,850 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:08,850 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:08,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:28:08,850 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:28:08,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:08,851 INFO L85 PathProgramCache]: Analyzing trace with hash 49157558, now seen corresponding path program 8 times [2022-07-22 21:28:08,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:08,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809051793] [2022-07-22 21:28:08,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:08,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:08,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:09,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:09,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809051793] [2022-07-22 21:28:09,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809051793] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:09,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:09,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:28:09,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109937428] [2022-07-22 21:28:09,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:09,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:28:09,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:09,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:28:09,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:28:09,244 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-22 21:28:09,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 342 transitions, 3850 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:09,245 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:09,245 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-22 21:28:09,245 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:11,472 INFO L129 PetriNetUnfolder]: 2659/7390 cut-off events. [2022-07-22 21:28:11,472 INFO L130 PetriNetUnfolder]: For 47455/48160 co-relation queries the response was YES. [2022-07-22 21:28:11,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26969 conditions, 7390 events. 2659/7390 cut-off events. For 47455/48160 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 72264 event pairs, 558 based on Foata normal form. 157/7345 useless extension candidates. Maximal degree in co-relation 26880. Up to 2057 conditions per place. [2022-07-22 21:28:11,541 INFO L132 encePairwiseOnDemand]: 139/163 looper letters, 337 selfloop transitions, 112 changer transitions 0/533 dead transitions. [2022-07-22 21:28:11,541 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 533 transitions, 7562 flow [2022-07-22 21:28:11,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:28:11,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:28:11,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1688 transitions. [2022-07-22 21:28:11,544 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5450435905715209 [2022-07-22 21:28:11,544 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1688 transitions. [2022-07-22 21:28:11,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1688 transitions. [2022-07-22 21:28:11,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:11,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1688 transitions. [2022-07-22 21:28:11,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 88.84210526315789) internal successors, (1688), 19 states have internal predecessors, (1688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:11,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:11,550 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 163.0) internal successors, (3260), 20 states have internal predecessors, (3260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:11,550 INFO L186 Difference]: Start difference. First operand has 321 places, 342 transitions, 3850 flow. Second operand 19 states and 1688 transitions. [2022-07-22 21:28:11,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 533 transitions, 7562 flow [2022-07-22 21:28:11,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 533 transitions, 7415 flow, removed 55 selfloop flow, removed 8 redundant places. [2022-07-22 21:28:11,725 INFO L242 Difference]: Finished difference. Result has 339 places, 390 transitions, 4992 flow [2022-07-22 21:28:11,725 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=3759, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=4992, PETRI_PLACES=339, PETRI_TRANSITIONS=390} [2022-07-22 21:28:11,726 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 188 predicate places. [2022-07-22 21:28:11,726 INFO L495 AbstractCegarLoop]: Abstraction has has 339 places, 390 transitions, 4992 flow [2022-07-22 21:28:11,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:11,727 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:11,727 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] [2022-07-22 21:28:11,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:28:11,727 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:28:11,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:11,728 INFO L85 PathProgramCache]: Analyzing trace with hash 938173350, now seen corresponding path program 9 times [2022-07-22 21:28:11,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:11,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138813192] [2022-07-22 21:28:11,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:11,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:11,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:12,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:12,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:12,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138813192] [2022-07-22 21:28:12,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138813192] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:12,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:12,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:28:12,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686745129] [2022-07-22 21:28:12,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:12,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:28:12,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:12,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:28:12,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:28:12,103 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-22 21:28:12,104 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 390 transitions, 4992 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:12,104 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:12,104 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-22 21:28:12,104 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:15,357 INFO L129 PetriNetUnfolder]: 3771/11406 cut-off events. [2022-07-22 21:28:15,357 INFO L130 PetriNetUnfolder]: For 77744/78604 co-relation queries the response was YES. [2022-07-22 21:28:15,440 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43356 conditions, 11406 events. 3771/11406 cut-off events. For 77744/78604 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 123530 event pairs, 1500 based on Foata normal form. 252/11367 useless extension candidates. Maximal degree in co-relation 43259. Up to 3666 conditions per place. [2022-07-22 21:28:15,471 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 427 selfloop transitions, 166 changer transitions 0/677 dead transitions. [2022-07-22 21:28:15,471 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 677 transitions, 10097 flow [2022-07-22 21:28:15,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:28:15,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:28:15,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1867 transitions. [2022-07-22 21:28:15,474 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5454279871457786 [2022-07-22 21:28:15,474 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1867 transitions. [2022-07-22 21:28:15,474 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1867 transitions. [2022-07-22 21:28:15,474 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:15,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1867 transitions. [2022-07-22 21:28:15,476 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 88.9047619047619) internal successors, (1867), 21 states have internal predecessors, (1867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:15,479 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:15,480 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:15,480 INFO L186 Difference]: Start difference. First operand has 339 places, 390 transitions, 4992 flow. Second operand 21 states and 1867 transitions. [2022-07-22 21:28:15,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 677 transitions, 10097 flow [2022-07-22 21:28:15,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 351 places, 677 transitions, 9932 flow, removed 48 selfloop flow, removed 8 redundant places. [2022-07-22 21:28:15,797 INFO L242 Difference]: Finished difference. Result has 362 places, 490 transitions, 7421 flow [2022-07-22 21:28:15,797 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=4859, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7421, PETRI_PLACES=362, PETRI_TRANSITIONS=490} [2022-07-22 21:28:15,797 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 211 predicate places. [2022-07-22 21:28:15,798 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 490 transitions, 7421 flow [2022-07-22 21:28:15,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:15,798 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:15,798 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:15,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:28:15,798 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:28:15,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:15,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1875062380, now seen corresponding path program 10 times [2022-07-22 21:28:15,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:15,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858985198] [2022-07-22 21:28:15,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:15,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:16,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:16,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:16,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858985198] [2022-07-22 21:28:16,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858985198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:16,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:16,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-22 21:28:16,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005198648] [2022-07-22 21:28:16,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:16,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 21:28:16,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:16,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 21:28:16,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-07-22 21:28:16,393 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-07-22 21:28:16,394 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 490 transitions, 7421 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:16,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:16,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-07-22 21:28:16,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:25,249 INFO L129 PetriNetUnfolder]: 10737/27452 cut-off events. [2022-07-22 21:28:25,249 INFO L130 PetriNetUnfolder]: For 194297/194369 co-relation queries the response was YES. [2022-07-22 21:28:25,848 INFO L84 FinitePrefix]: Finished finitePrefix Result has 113983 conditions, 27452 events. 10737/27452 cut-off events. For 194297/194369 co-relation queries the response was YES. Maximal size of possible extension queue 1270. Compared 313027 event pairs, 5522 based on Foata normal form. 17/27008 useless extension candidates. Maximal degree in co-relation 113874. Up to 7521 conditions per place. [2022-07-22 21:28:25,922 INFO L132 encePairwiseOnDemand]: 136/163 looper letters, 608 selfloop transitions, 187 changer transitions 0/850 dead transitions. [2022-07-22 21:28:25,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 850 transitions, 13995 flow [2022-07-22 21:28:25,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 21:28:25,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-22 21:28:25,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2073 transitions. [2022-07-22 21:28:25,925 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5299079754601227 [2022-07-22 21:28:25,925 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2073 transitions. [2022-07-22 21:28:25,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2073 transitions. [2022-07-22 21:28:25,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:25,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2073 transitions. [2022-07-22 21:28:25,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 86.375) internal successors, (2073), 24 states have internal predecessors, (2073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:25,931 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:25,931 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 163.0) internal successors, (4075), 25 states have internal predecessors, (4075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:25,931 INFO L186 Difference]: Start difference. First operand has 362 places, 490 transitions, 7421 flow. Second operand 24 states and 2073 transitions. [2022-07-22 21:28:25,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 850 transitions, 13995 flow [2022-07-22 21:28:27,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 850 transitions, 13869 flow, removed 56 selfloop flow, removed 5 redundant places. [2022-07-22 21:28:27,533 INFO L242 Difference]: Finished difference. Result has 396 places, 578 transitions, 9674 flow [2022-07-22 21:28:27,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=7302, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=490, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=9674, PETRI_PLACES=396, PETRI_TRANSITIONS=578} [2022-07-22 21:28:27,535 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 245 predicate places. [2022-07-22 21:28:27,535 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 578 transitions, 9674 flow [2022-07-22 21:28:27,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:27,535 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:27,536 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:27,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:28:27,536 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:28:27,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:27,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1048025154, now seen corresponding path program 11 times [2022-07-22 21:28:27,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:27,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134276953] [2022-07-22 21:28:27,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:27,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:27,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:28,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:28,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:28,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134276953] [2022-07-22 21:28:28,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134276953] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:28,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:28,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2022-07-22 21:28:28,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259914704] [2022-07-22 21:28:28,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:28,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-22 21:28:28,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:28,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-22 21:28:28,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=526, Unknown=0, NotChecked=0, Total=600 [2022-07-22 21:28:28,130 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 163 [2022-07-22 21:28:28,131 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 578 transitions, 9674 flow. Second operand has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:28,131 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:28,131 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 163 [2022-07-22 21:28:28,131 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:37,672 INFO L129 PetriNetUnfolder]: 10735/27307 cut-off events. [2022-07-22 21:28:37,673 INFO L130 PetriNetUnfolder]: For 236946/237133 co-relation queries the response was YES. [2022-07-22 21:28:38,849 INFO L84 FinitePrefix]: Finished finitePrefix Result has 120313 conditions, 27307 events. 10735/27307 cut-off events. For 236946/237133 co-relation queries the response was YES. Maximal size of possible extension queue 1187. Compared 312231 event pairs, 2355 based on Foata normal form. 31/26903 useless extension candidates. Maximal degree in co-relation 120188. Up to 12696 conditions per place. [2022-07-22 21:28:38,961 INFO L132 encePairwiseOnDemand]: 135/163 looper letters, 598 selfloop transitions, 224 changer transitions 0/877 dead transitions. [2022-07-22 21:28:38,961 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 877 transitions, 15229 flow [2022-07-22 21:28:38,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 21:28:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-07-22 21:28:38,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2150 transitions. [2022-07-22 21:28:38,964 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5276073619631901 [2022-07-22 21:28:38,964 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2150 transitions. [2022-07-22 21:28:38,964 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2150 transitions. [2022-07-22 21:28:38,965 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:38,965 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2150 transitions. [2022-07-22 21:28:38,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 86.0) internal successors, (2150), 25 states have internal predecessors, (2150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:38,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:38,971 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 163.0) internal successors, (4238), 26 states have internal predecessors, (4238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:38,971 INFO L186 Difference]: Start difference. First operand has 396 places, 578 transitions, 9674 flow. Second operand 25 states and 2150 transitions. [2022-07-22 21:28:38,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 877 transitions, 15229 flow [2022-07-22 21:28:41,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 415 places, 877 transitions, 14943 flow, removed 136 selfloop flow, removed 5 redundant places. [2022-07-22 21:28:41,308 INFO L242 Difference]: Finished difference. Result has 423 places, 598 transitions, 10628 flow [2022-07-22 21:28:41,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=9475, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=204, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=356, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=10628, PETRI_PLACES=423, PETRI_TRANSITIONS=598} [2022-07-22 21:28:41,310 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 272 predicate places. [2022-07-22 21:28:41,310 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 598 transitions, 10628 flow [2022-07-22 21:28:41,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 79.16) internal successors, (1979), 25 states have internal predecessors, (1979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:41,311 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:41,311 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:41,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 21:28:41,311 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:28:41,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:41,312 INFO L85 PathProgramCache]: Analyzing trace with hash 300848526, now seen corresponding path program 12 times [2022-07-22 21:28:41,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:41,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808635432] [2022-07-22 21:28:41,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:41,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:41,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:41,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:41,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808635432] [2022-07-22 21:28:41,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808635432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:41,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:41,684 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:28:41,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79808211] [2022-07-22 21:28:41,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:41,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:28:41,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:41,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:28:41,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:28:41,686 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-22 21:28:41,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 598 transitions, 10628 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:41,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:41,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-22 21:28:41,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:50,791 INFO L129 PetriNetUnfolder]: 9378/28449 cut-off events. [2022-07-22 21:28:50,791 INFO L130 PetriNetUnfolder]: For 250761/252797 co-relation queries the response was YES. [2022-07-22 21:28:51,605 INFO L84 FinitePrefix]: Finished finitePrefix Result has 118508 conditions, 28449 events. 9378/28449 cut-off events. For 250761/252797 co-relation queries the response was YES. Maximal size of possible extension queue 1667. Compared 367080 event pairs, 2935 based on Foata normal form. 577/28362 useless extension candidates. Maximal degree in co-relation 118375. Up to 9190 conditions per place. [2022-07-22 21:28:51,688 INFO L132 encePairwiseOnDemand]: 141/163 looper letters, 569 selfloop transitions, 260 changer transitions 0/927 dead transitions. [2022-07-22 21:28:51,688 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 927 transitions, 18261 flow [2022-07-22 21:28:51,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:28:51,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:28:51,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1871 transitions. [2022-07-22 21:28:51,691 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5465965527315221 [2022-07-22 21:28:51,691 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1871 transitions. [2022-07-22 21:28:51,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1871 transitions. [2022-07-22 21:28:51,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:51,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1871 transitions. [2022-07-22 21:28:51,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 89.0952380952381) internal successors, (1871), 21 states have internal predecessors, (1871), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:51,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:51,697 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 163.0) internal successors, (3586), 22 states have internal predecessors, (3586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:51,697 INFO L186 Difference]: Start difference. First operand has 423 places, 598 transitions, 10628 flow. Second operand 21 states and 1871 transitions. [2022-07-22 21:28:51,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 927 transitions, 18261 flow [2022-07-22 21:28:53,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 431 places, 927 transitions, 18083 flow, removed 40 selfloop flow, removed 12 redundant places. [2022-07-22 21:28:53,222 INFO L242 Difference]: Finished difference. Result has 440 places, 703 transitions, 14152 flow [2022-07-22 21:28:53,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=163, PETRI_DIFFERENCE_MINUEND_FLOW=10455, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=598, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=14152, PETRI_PLACES=440, PETRI_TRANSITIONS=703} [2022-07-22 21:28:53,223 INFO L279 CegarLoopForPetriNet]: 151 programPoint places, 289 predicate places. [2022-07-22 21:28:53,224 INFO L495 AbstractCegarLoop]: Abstraction has has 440 places, 703 transitions, 14152 flow [2022-07-22 21:28:53,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:53,224 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:53,224 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:53,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:28:53,224 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 21:28:53,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:53,225 INFO L85 PathProgramCache]: Analyzing trace with hash -894644452, now seen corresponding path program 13 times [2022-07-22 21:28:53,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:53,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456069313] [2022-07-22 21:28:53,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:53,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:53,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 21:28:53,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:53,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456069313] [2022-07-22 21:28:53,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456069313] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:53,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:53,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:28:53,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613754180] [2022-07-22 21:28:53,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:53,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:28:53,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:53,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:28:53,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:28:53,617 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 163 [2022-07-22 21:28:53,617 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 703 transitions, 14152 flow. Second operand has 19 states, 19 states have (on average 84.57894736842105) internal successors, (1607), 19 states have internal predecessors, (1607), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:53,618 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:53,618 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 163 [2022-07-22 21:28:53,618 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand