./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.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-3_2-container_of-global.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 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 21:27:58,210 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 21:27:58,212 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 21:27:58,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 21:27:58,246 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 21:27:58,247 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 21:27:58,248 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 21:27:58,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 21:27:58,265 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 21:27:58,266 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 21:27:58,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 21:27:58,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 21:27:58,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 21:27:58,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 21:27:58,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 21:27:58,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 21:27:58,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 21:27:58,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 21:27:58,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 21:27:58,274 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 21:27:58,275 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 21:27:58,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 21:27:58,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 21:27:58,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 21:27:58,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 21:27:58,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 21:27:58,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 21:27:58,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 21:27:58,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 21:27:58,286 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 21:27:58,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 21:27:58,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 21:27:58,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 21:27:58,289 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 21:27:58,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 21:27:58,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 21:27:58,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 21:27:58,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 21:27:58,291 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 21:27:58,291 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 21:27:58,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 21:27:58,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 21:27:58,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 21:27:58,311 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 21:27:58,312 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 21:27:58,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 21:27:58,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 21:27:58,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 21:27:58,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 21:27:58,314 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 21:27:58,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 21:27:58,314 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 21:27:58,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 21:27:58,315 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 21:27:58,315 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 21:27:58,315 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 21:27:58,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 21:27:58,316 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 21:27:58,316 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 21:27:58,316 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 21:27:58,316 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 21:27:58,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 21:27:58,317 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 21:27:58,317 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 21:27:58,317 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 21:27:58,317 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 21:27:58,318 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 21:27:58,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:27:58,318 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 21:27:58,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 21:27:58,319 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 21:27:58,319 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 21:27:58,319 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 21:27:58,319 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 21:27:58,319 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 21:27:58,320 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 21:27:58,320 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 [2022-07-22 21:27:58,535 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 21:27:58,549 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 21:27:58,551 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 21:27:58,552 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 21:27:58,552 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 21:27:58,554 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2022-07-22 21:27:58,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7104745/0f2d27b6998040e98cb3996a9a42fd2c/FLAG348182068 [2022-07-22 21:27:59,089 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 21:27:59,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2022-07-22 21:27:59,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7104745/0f2d27b6998040e98cb3996a9a42fd2c/FLAG348182068 [2022-07-22 21:27:59,584 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ff7104745/0f2d27b6998040e98cb3996a9a42fd2c [2022-07-22 21:27:59,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 21:27:59,587 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 21:27:59,588 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 21:27:59,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 21:27:59,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 21:27:59,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:27:59" (1/1) ... [2022-07-22 21:27:59,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e3c3b32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:27:59, skipping insertion in model container [2022-07-22 21:27:59,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 09:27:59" (1/1) ... [2022-07-22 21:27:59,597 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 21:27:59,646 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 21:27:59,780 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:28:00,092 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-3_2-container_of-global.i[75009,75022] [2022-07-22 21:28:00,136 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:28:00,141 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 21:28:00,149 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-22 21:28:00,167 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-3_2-container_of-global.i[75009,75022] [2022-07-22 21:28:00,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 21:28:00,259 INFO L208 MainTranslator]: Completed translation [2022-07-22 21:28:00,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:00 WrapperNode [2022-07-22 21:28:00,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 21:28:00,261 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 21:28:00,261 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 21:28:00,261 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 21:28:00,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:00" (1/1) ... [2022-07-22 21:28:00,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:00" (1/1) ... [2022-07-22 21:28:00,313 INFO L137 Inliner]: procedures = 468, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2022-07-22 21:28:00,314 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 21:28:00,314 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 21:28:00,314 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 21:28:00,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 21:28:00,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:00" (1/1) ... [2022-07-22 21:28:00,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:00" (1/1) ... [2022-07-22 21:28:00,322 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:00" (1/1) ... [2022-07-22 21:28:00,322 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:00" (1/1) ... [2022-07-22 21:28:00,330 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:00" (1/1) ... [2022-07-22 21:28:00,331 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:00" (1/1) ... [2022-07-22 21:28:00,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:00" (1/1) ... [2022-07-22 21:28:00,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 21:28:00,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 21:28:00,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 21:28:00,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 21:28:00,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:00" (1/1) ... [2022-07-22 21:28:00,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 21:28:00,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 21:28:00,369 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 21:28:00,371 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 21:28:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-22 21:28:00,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 21:28:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-22 21:28:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 21:28:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 21:28:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 21:28:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 21:28:00,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 21:28:00,397 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-07-22 21:28:00,398 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-07-22 21:28:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 21:28:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 21:28:00,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 21:28:00,399 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 21:28:00,615 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 21:28:00,617 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 21:28:00,795 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 21:28:00,836 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 21:28:00,836 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 21:28:00,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:28:00 BoogieIcfgContainer [2022-07-22 21:28:00,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 21:28:00,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 21:28:00,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 21:28:00,846 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 21:28:00,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 09:27:59" (1/3) ... [2022-07-22 21:28:00,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@249cb253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:28:00, skipping insertion in model container [2022-07-22 21:28:00,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 09:28:00" (2/3) ... [2022-07-22 21:28:00,847 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@249cb253 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 09:28:00, skipping insertion in model container [2022-07-22 21:28:00,847 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 09:28:00" (3/3) ... [2022-07-22 21:28:00,848 INFO L111 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2022-07-22 21:28:00,852 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-22 21:28:00,858 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 21:28:00,859 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-22 21:28:00,859 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-22 21:28:00,914 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-22 21:28:00,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 184 places, 186 transitions, 388 flow [2022-07-22 21:28:01,011 INFO L129 PetriNetUnfolder]: 10/231 cut-off events. [2022-07-22 21:28:01,011 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-22 21:28:01,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 240 conditions, 231 events. 10/231 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 334 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 137. Up to 4 conditions per place. [2022-07-22 21:28:01,015 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 186 transitions, 388 flow [2022-07-22 21:28:01,022 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 172 transitions, 356 flow [2022-07-22 21:28:01,036 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 21:28:01,042 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@1ac1b918, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@75016b41 [2022-07-22 21:28:01,042 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-07-22 21:28:01,057 INFO L129 PetriNetUnfolder]: 0/45 cut-off events. [2022-07-22 21:28:01,059 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-22 21:28:01,059 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:01,059 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] [2022-07-22 21:28:01,060 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:01,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:01,065 INFO L85 PathProgramCache]: Analyzing trace with hash -34102460, now seen corresponding path program 1 times [2022-07-22 21:28:01,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:01,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138834272] [2022-07-22 21:28:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:01,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:01,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:01,403 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 21:28:01,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:01,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138834272] [2022-07-22 21:28:01,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138834272] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:01,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:01,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:28:01,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986920186] [2022-07-22 21:28:01,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:01,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:28:01,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:01,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:28:01,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:28:01,434 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2022-07-22 21:28:01,437 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 172 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 21:28:01,437 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:01,437 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2022-07-22 21:28:01,438 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:01,698 INFO L129 PetriNetUnfolder]: 361/947 cut-off events. [2022-07-22 21:28:01,698 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2022-07-22 21:28:01,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1638 conditions, 947 events. 361/947 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 4956 event pairs, 216 based on Foata normal form. 20/912 useless extension candidates. Maximal degree in co-relation 1391. Up to 397 conditions per place. [2022-07-22 21:28:01,708 INFO L132 encePairwiseOnDemand]: 164/186 looper letters, 53 selfloop transitions, 17 changer transitions 1/168 dead transitions. [2022-07-22 21:28:01,709 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 168 transitions, 490 flow [2022-07-22 21:28:01,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 21:28:01,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-22 21:28:01,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1057 transitions. [2022-07-22 21:28:01,724 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6314217443249701 [2022-07-22 21:28:01,725 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1057 transitions. [2022-07-22 21:28:01,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1057 transitions. [2022-07-22 21:28:01,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:01,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1057 transitions. [2022-07-22 21:28:01,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 117.44444444444444) internal successors, (1057), 9 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states 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 21:28:01,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 21:28:01,746 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 186.0) internal successors, (1860), 10 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 21:28:01,747 INFO L186 Difference]: Start difference. First operand has 172 places, 172 transitions, 356 flow. Second operand 9 states and 1057 transitions. [2022-07-22 21:28:01,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 168 transitions, 490 flow [2022-07-22 21:28:01,751 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 168 transitions, 482 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:28:01,755 INFO L242 Difference]: Finished difference. Result has 170 places, 161 transitions, 367 flow [2022-07-22 21:28:01,757 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=367, PETRI_PLACES=170, PETRI_TRANSITIONS=161} [2022-07-22 21:28:01,763 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, -2 predicate places. [2022-07-22 21:28:01,763 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 367 flow [2022-07-22 21:28:01,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 21:28:01,764 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:01,765 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:01,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 21:28:01,765 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:01,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:01,766 INFO L85 PathProgramCache]: Analyzing trace with hash -888642596, now seen corresponding path program 1 times [2022-07-22 21:28:01,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:01,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571189058] [2022-07-22 21:28:01,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:01,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:01,912 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 21:28:01,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:01,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571189058] [2022-07-22 21:28:01,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571189058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:01,914 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:01,915 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:28:01,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959631932] [2022-07-22 21:28:01,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:01,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:28:01,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:01,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:28:01,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:28:01,921 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2022-07-22 21:28:01,922 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 161 transitions, 367 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states 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 21:28:01,922 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:01,925 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2022-07-22 21:28:01,926 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:02,140 INFO L129 PetriNetUnfolder]: 361/951 cut-off events. [2022-07-22 21:28:02,140 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-07-22 21:28:02,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 951 events. 361/951 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 4981 event pairs, 120 based on Foata normal form. 1/917 useless extension candidates. Maximal degree in co-relation 856. Up to 261 conditions per place. [2022-07-22 21:28:02,147 INFO L132 encePairwiseOnDemand]: 167/186 looper letters, 61 selfloop transitions, 18 changer transitions 1/176 dead transitions. [2022-07-22 21:28:02,147 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 176 transitions, 559 flow [2022-07-22 21:28:02,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 21:28:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-22 21:28:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1171 transitions. [2022-07-22 21:28:02,150 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6295698924731182 [2022-07-22 21:28:02,150 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1171 transitions. [2022-07-22 21:28:02,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1171 transitions. [2022-07-22 21:28:02,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:02,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1171 transitions. [2022-07-22 21:28:02,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.1) internal successors, (1171), 10 states have internal predecessors, (1171), 0 states have call successors, (0), 0 states 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 21:28:02,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states 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 21:28:02,156 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 186.0) internal successors, (2046), 11 states have internal predecessors, (2046), 0 states have call successors, (0), 0 states 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 21:28:02,156 INFO L186 Difference]: Start difference. First operand has 170 places, 161 transitions, 367 flow. Second operand 10 states and 1171 transitions. [2022-07-22 21:28:02,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 176 transitions, 559 flow [2022-07-22 21:28:02,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 176 transitions, 530 flow, removed 0 selfloop flow, removed 7 redundant places. [2022-07-22 21:28:02,183 INFO L242 Difference]: Finished difference. Result has 171 places, 160 transitions, 378 flow [2022-07-22 21:28:02,184 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=378, PETRI_PLACES=171, PETRI_TRANSITIONS=160} [2022-07-22 21:28:02,185 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, -1 predicate places. [2022-07-22 21:28:02,185 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 160 transitions, 378 flow [2022-07-22 21:28:02,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states 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 21:28:02,185 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:02,186 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] [2022-07-22 21:28:02,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 21:28:02,186 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:02,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:02,187 INFO L85 PathProgramCache]: Analyzing trace with hash -170107804, now seen corresponding path program 1 times [2022-07-22 21:28:02,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:02,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676712984] [2022-07-22 21:28:02,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:02,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:02,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:02,269 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 21:28:02,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:02,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676712984] [2022-07-22 21:28:02,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676712984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:02,270 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:02,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:28:02,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188753097] [2022-07-22 21:28:02,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:02,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:28:02,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:02,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:28:02,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:28:02,273 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2022-07-22 21:28:02,274 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 160 transitions, 378 flow. Second operand has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 21:28:02,274 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:02,274 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2022-07-22 21:28:02,274 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:02,608 INFO L129 PetriNetUnfolder]: 832/1911 cut-off events. [2022-07-22 21:28:02,609 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2022-07-22 21:28:02,612 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3654 conditions, 1911 events. 832/1911 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 11752 event pairs, 169 based on Foata normal form. 32/1907 useless extension candidates. Maximal degree in co-relation 948. Up to 499 conditions per place. [2022-07-22 21:28:02,618 INFO L132 encePairwiseOnDemand]: 165/186 looper letters, 100 selfloop transitions, 49 changer transitions 0/245 dead transitions. [2022-07-22 21:28:02,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 245 transitions, 862 flow [2022-07-22 21:28:02,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 21:28:02,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-07-22 21:28:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1540 transitions. [2022-07-22 21:28:02,622 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6368899917287014 [2022-07-22 21:28:02,622 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1540 transitions. [2022-07-22 21:28:02,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1540 transitions. [2022-07-22 21:28:02,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:02,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1540 transitions. [2022-07-22 21:28:02,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 118.46153846153847) internal successors, (1540), 13 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states 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 21:28:02,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states 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 21:28:02,629 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 186.0) internal successors, (2604), 14 states have internal predecessors, (2604), 0 states have call successors, (0), 0 states 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 21:28:02,629 INFO L186 Difference]: Start difference. First operand has 171 places, 160 transitions, 378 flow. Second operand 13 states and 1540 transitions. [2022-07-22 21:28:02,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 245 transitions, 862 flow [2022-07-22 21:28:02,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 245 transitions, 816 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-22 21:28:02,634 INFO L242 Difference]: Finished difference. Result has 183 places, 197 transitions, 648 flow [2022-07-22 21:28:02,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=648, PETRI_PLACES=183, PETRI_TRANSITIONS=197} [2022-07-22 21:28:02,635 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 11 predicate places. [2022-07-22 21:28:02,635 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 197 transitions, 648 flow [2022-07-22 21:28:02,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.33333333333333) internal successors, (668), 6 states have internal predecessors, (668), 0 states have call successors, (0), 0 states 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 21:28:02,636 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:02,636 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] [2022-07-22 21:28:02,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 21:28:02,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:02,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:02,637 INFO L85 PathProgramCache]: Analyzing trace with hash 896697388, now seen corresponding path program 1 times [2022-07-22 21:28:02,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:02,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050527534] [2022-07-22 21:28:02,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:02,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:02,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:02,719 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 21:28:02,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:02,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050527534] [2022-07-22 21:28:02,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050527534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:02,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:02,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 21:28:02,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974884555] [2022-07-22 21:28:02,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:02,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 21:28:02,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:02,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 21:28:02,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 21:28:02,726 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2022-07-22 21:28:02,726 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 197 transitions, 648 flow. Second operand has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states 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 21:28:02,727 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:02,727 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2022-07-22 21:28:02,727 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:03,128 INFO L129 PetriNetUnfolder]: 1084/2475 cut-off events. [2022-07-22 21:28:03,128 INFO L130 PetriNetUnfolder]: For 10880/10978 co-relation queries the response was YES. [2022-07-22 21:28:03,134 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8969 conditions, 2475 events. 1084/2475 cut-off events. For 10880/10978 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16565 event pairs, 218 based on Foata normal form. 47/2486 useless extension candidates. Maximal degree in co-relation 7694. Up to 732 conditions per place. [2022-07-22 21:28:03,144 INFO L132 encePairwiseOnDemand]: 167/186 looper letters, 74 selfloop transitions, 48 changer transitions 69/286 dead transitions. [2022-07-22 21:28:03,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 286 transitions, 1732 flow [2022-07-22 21:28:03,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 21:28:03,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-22 21:28:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1307 transitions. [2022-07-22 21:28:03,147 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6388074291300098 [2022-07-22 21:28:03,147 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1307 transitions. [2022-07-22 21:28:03,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1307 transitions. [2022-07-22 21:28:03,148 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:03,148 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1307 transitions. [2022-07-22 21:28:03,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 118.81818181818181) internal successors, (1307), 11 states have internal predecessors, (1307), 0 states have call successors, (0), 0 states 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 21:28:03,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states 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 21:28:03,153 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 186.0) internal successors, (2232), 12 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states 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 21:28:03,153 INFO L186 Difference]: Start difference. First operand has 183 places, 197 transitions, 648 flow. Second operand 11 states and 1307 transitions. [2022-07-22 21:28:03,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 286 transitions, 1732 flow [2022-07-22 21:28:03,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 286 transitions, 1732 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-07-22 21:28:03,168 INFO L242 Difference]: Finished difference. Result has 201 places, 203 transitions, 961 flow [2022-07-22 21:28:03,169 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=961, PETRI_PLACES=201, PETRI_TRANSITIONS=203} [2022-07-22 21:28:03,169 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 29 predicate places. [2022-07-22 21:28:03,170 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 203 transitions, 961 flow [2022-07-22 21:28:03,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 112.16666666666667) internal successors, (673), 6 states have internal predecessors, (673), 0 states have call successors, (0), 0 states 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 21:28:03,170 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:03,170 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] [2022-07-22 21:28:03,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 21:28:03,171 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:03,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:03,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1717393044, now seen corresponding path program 1 times [2022-07-22 21:28:03,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:03,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819700318] [2022-07-22 21:28:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:03,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:03,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:03,239 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 21:28:03,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:03,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819700318] [2022-07-22 21:28:03,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819700318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:03,240 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:03,240 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 21:28:03,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281613090] [2022-07-22 21:28:03,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:03,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 21:28:03,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:03,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 21:28:03,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 21:28:03,242 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 186 [2022-07-22 21:28:03,243 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 203 transitions, 961 flow. Second operand has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 21:28:03,243 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:03,243 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 186 [2022-07-22 21:28:03,243 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:03,298 INFO L129 PetriNetUnfolder]: 46/285 cut-off events. [2022-07-22 21:28:03,298 INFO L130 PetriNetUnfolder]: For 736/796 co-relation queries the response was YES. [2022-07-22 21:28:03,299 INFO L84 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 285 events. 46/285 cut-off events. For 736/796 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 949 event pairs, 10 based on Foata normal form. 0/274 useless extension candidates. Maximal degree in co-relation 629. Up to 31 conditions per place. [2022-07-22 21:28:03,300 INFO L132 encePairwiseOnDemand]: 181/186 looper letters, 19 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2022-07-22 21:28:03,300 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 139 transitions, 456 flow [2022-07-22 21:28:03,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 21:28:03,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-22 21:28:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 966 transitions. [2022-07-22 21:28:03,302 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8655913978494624 [2022-07-22 21:28:03,302 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 966 transitions. [2022-07-22 21:28:03,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 966 transitions. [2022-07-22 21:28:03,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:03,303 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 966 transitions. [2022-07-22 21:28:03,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 161.0) internal successors, (966), 6 states have internal predecessors, (966), 0 states have call successors, (0), 0 states 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 21:28:03,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states 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 21:28:03,306 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 186.0) internal successors, (1302), 7 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states 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 21:28:03,306 INFO L186 Difference]: Start difference. First operand has 201 places, 203 transitions, 961 flow. Second operand 6 states and 966 transitions. [2022-07-22 21:28:03,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 139 transitions, 456 flow [2022-07-22 21:28:03,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 139 transitions, 336 flow, removed 40 selfloop flow, removed 19 redundant places. [2022-07-22 21:28:03,309 INFO L242 Difference]: Finished difference. Result has 144 places, 131 transitions, 282 flow [2022-07-22 21:28:03,309 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=282, PETRI_PLACES=144, PETRI_TRANSITIONS=131} [2022-07-22 21:28:03,310 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, -28 predicate places. [2022-07-22 21:28:03,310 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 131 transitions, 282 flow [2022-07-22 21:28:03,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.2) internal successors, (796), 5 states have internal predecessors, (796), 0 states have call successors, (0), 0 states 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 21:28:03,311 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:03,311 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:03,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 21:28:03,311 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:03,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:03,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1184178643, now seen corresponding path program 1 times [2022-07-22 21:28:03,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:03,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791983048] [2022-07-22 21:28:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:03,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:03,935 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 21:28:03,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:03,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791983048] [2022-07-22 21:28:03,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791983048] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:03,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:03,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:28:03,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093737965] [2022-07-22 21:28:03,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:03,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:28:03,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:03,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:28:03,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:28:03,939 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-07-22 21:28:03,941 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 131 transitions, 282 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:03,941 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:03,941 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-07-22 21:28:03,941 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:05,081 INFO L129 PetriNetUnfolder]: 578/1326 cut-off events. [2022-07-22 21:28:05,081 INFO L130 PetriNetUnfolder]: For 181/181 co-relation queries the response was YES. [2022-07-22 21:28:05,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2703 conditions, 1326 events. 578/1326 cut-off events. For 181/181 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 6842 event pairs, 190 based on Foata normal form. 0/1277 useless extension candidates. Maximal degree in co-relation 2695. Up to 378 conditions per place. [2022-07-22 21:28:05,088 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 122 selfloop transitions, 27 changer transitions 0/212 dead transitions. [2022-07-22 21:28:05,088 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 212 transitions, 778 flow [2022-07-22 21:28:05,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:28:05,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:28:05,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1803 transitions. [2022-07-22 21:28:05,091 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5101867572156197 [2022-07-22 21:28:05,092 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1803 transitions. [2022-07-22 21:28:05,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1803 transitions. [2022-07-22 21:28:05,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:05,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1803 transitions. [2022-07-22 21:28:05,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 94.89473684210526) internal successors, (1803), 19 states have internal predecessors, (1803), 0 states have call successors, (0), 0 states 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 21:28:05,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states 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 21:28:05,100 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states 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 21:28:05,100 INFO L186 Difference]: Start difference. First operand has 144 places, 131 transitions, 282 flow. Second operand 19 states and 1803 transitions. [2022-07-22 21:28:05,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 212 transitions, 778 flow [2022-07-22 21:28:05,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 212 transitions, 771 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-22 21:28:05,104 INFO L242 Difference]: Finished difference. Result has 168 places, 147 transitions, 423 flow [2022-07-22 21:28:05,104 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=423, PETRI_PLACES=168, PETRI_TRANSITIONS=147} [2022-07-22 21:28:05,105 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, -4 predicate places. [2022-07-22 21:28:05,105 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 147 transitions, 423 flow [2022-07-22 21:28:05,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:05,105 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:05,106 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:05,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 21:28:05,106 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:05,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:05,106 INFO L85 PathProgramCache]: Analyzing trace with hash 1988516733, now seen corresponding path program 2 times [2022-07-22 21:28:05,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:05,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103027081] [2022-07-22 21:28:05,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:05,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:05,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:05,458 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 21:28:05,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:05,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103027081] [2022-07-22 21:28:05,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103027081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:05,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:05,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-22 21:28:05,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706829228] [2022-07-22 21:28:05,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:05,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 21:28:05,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:05,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 21:28:05,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-22 21:28:05,461 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-07-22 21:28:05,462 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 147 transitions, 423 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states 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 21:28:05,462 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:05,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-07-22 21:28:05,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:06,109 INFO L129 PetriNetUnfolder]: 540/1461 cut-off events. [2022-07-22 21:28:06,110 INFO L130 PetriNetUnfolder]: For 672/698 co-relation queries the response was YES. [2022-07-22 21:28:06,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3337 conditions, 1461 events. 540/1461 cut-off events. For 672/698 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 8950 event pairs, 101 based on Foata normal form. 17/1441 useless extension candidates. Maximal degree in co-relation 3320. Up to 376 conditions per place. [2022-07-22 21:28:06,119 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 114 selfloop transitions, 42 changer transitions 0/222 dead transitions. [2022-07-22 21:28:06,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 222 transitions, 1022 flow [2022-07-22 21:28:06,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 21:28:06,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-22 21:28:06,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1642 transitions. [2022-07-22 21:28:06,122 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.519291587602783 [2022-07-22 21:28:06,122 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1642 transitions. [2022-07-22 21:28:06,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1642 transitions. [2022-07-22 21:28:06,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:06,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1642 transitions. [2022-07-22 21:28:06,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 96.58823529411765) internal successors, (1642), 17 states have internal predecessors, (1642), 0 states have call successors, (0), 0 states 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 21:28:06,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 186.0) internal successors, (3348), 18 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states 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 21:28:06,130 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 186.0) internal successors, (3348), 18 states have internal predecessors, (3348), 0 states have call successors, (0), 0 states 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 21:28:06,130 INFO L186 Difference]: Start difference. First operand has 168 places, 147 transitions, 423 flow. Second operand 17 states and 1642 transitions. [2022-07-22 21:28:06,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 222 transitions, 1022 flow [2022-07-22 21:28:06,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 222 transitions, 1006 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:28:06,135 INFO L242 Difference]: Finished difference. Result has 186 places, 174 transitions, 725 flow [2022-07-22 21:28:06,135 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=725, PETRI_PLACES=186, PETRI_TRANSITIONS=174} [2022-07-22 21:28:06,135 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 14 predicate places. [2022-07-22 21:28:06,136 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 174 transitions, 725 flow [2022-07-22 21:28:06,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states 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 21:28:06,136 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:06,136 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:06,137 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 21:28:06,137 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:06,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:06,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1034154241, now seen corresponding path program 3 times [2022-07-22 21:28:06,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:06,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351709577] [2022-07-22 21:28:06,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:06,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:06,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:06,544 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 21:28:06,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:06,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351709577] [2022-07-22 21:28:06,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351709577] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:06,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:06,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-07-22 21:28:06,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172217810] [2022-07-22 21:28:06,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:06,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-22 21:28:06,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:06,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-22 21:28:06,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=229, Unknown=0, NotChecked=0, Total=272 [2022-07-22 21:28:06,548 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-07-22 21:28:06,549 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 174 transitions, 725 flow. Second operand has 17 states, 17 states have (on average 90.58823529411765) internal successors, (1540), 17 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states 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 21:28:06,549 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:06,549 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-07-22 21:28:06,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:08,275 INFO L129 PetriNetUnfolder]: 1012/2619 cut-off events. [2022-07-22 21:28:08,275 INFO L130 PetriNetUnfolder]: For 2473/2473 co-relation queries the response was YES. [2022-07-22 21:28:08,281 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6899 conditions, 2619 events. 1012/2619 cut-off events. For 2473/2473 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 18372 event pairs, 208 based on Foata normal form. 1/2553 useless extension candidates. Maximal degree in co-relation 6874. Up to 603 conditions per place. [2022-07-22 21:28:08,289 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 196 selfloop transitions, 69 changer transitions 0/328 dead transitions. [2022-07-22 21:28:08,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 328 transitions, 1982 flow [2022-07-22 21:28:08,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 21:28:08,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-22 21:28:08,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2725 transitions. [2022-07-22 21:28:08,294 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5051909529106414 [2022-07-22 21:28:08,294 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2725 transitions. [2022-07-22 21:28:08,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2725 transitions. [2022-07-22 21:28:08,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:08,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2725 transitions. [2022-07-22 21:28:08,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 93.96551724137932) internal successors, (2725), 29 states have internal predecessors, (2725), 0 states have call successors, (0), 0 states 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 21:28:08,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states 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 21:28:08,305 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states 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 21:28:08,305 INFO L186 Difference]: Start difference. First operand has 186 places, 174 transitions, 725 flow. Second operand 29 states and 2725 transitions. [2022-07-22 21:28:08,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 328 transitions, 1982 flow [2022-07-22 21:28:08,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 328 transitions, 1957 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-22 21:28:08,315 INFO L242 Difference]: Finished difference. Result has 222 places, 214 transitions, 1217 flow [2022-07-22 21:28:08,315 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=709, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=1217, PETRI_PLACES=222, PETRI_TRANSITIONS=214} [2022-07-22 21:28:08,316 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 50 predicate places. [2022-07-22 21:28:08,316 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 214 transitions, 1217 flow [2022-07-22 21:28:08,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 90.58823529411765) internal successors, (1540), 17 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states 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 21:28:08,317 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:08,317 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:08,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 21:28:08,317 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:08,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:08,318 INFO L85 PathProgramCache]: Analyzing trace with hash -890503641, now seen corresponding path program 4 times [2022-07-22 21:28:08,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:08,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065589718] [2022-07-22 21:28:08,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:08,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:08,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:08,651 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 21:28:08,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:08,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065589718] [2022-07-22 21:28:08,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065589718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:08,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:08,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 21:28:08,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588539906] [2022-07-22 21:28:08,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:08,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 21:28:08,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:08,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 21:28:08,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-22 21:28:08,655 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-07-22 21:28:08,656 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 214 transitions, 1217 flow. Second operand has 16 states, 16 states have (on average 92.6875) internal successors, (1483), 16 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states 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 21:28:08,656 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:08,656 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-07-22 21:28:08,656 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:09,711 INFO L129 PetriNetUnfolder]: 829/2406 cut-off events. [2022-07-22 21:28:09,711 INFO L130 PetriNetUnfolder]: For 5144/5167 co-relation queries the response was YES. [2022-07-22 21:28:09,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7100 conditions, 2406 events. 829/2406 cut-off events. For 5144/5167 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 17545 event pairs, 410 based on Foata normal form. 16/2356 useless extension candidates. Maximal degree in co-relation 7060. Up to 927 conditions per place. [2022-07-22 21:28:09,743 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 143 selfloop transitions, 64 changer transitions 0/280 dead transitions. [2022-07-22 21:28:09,743 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 280 transitions, 2021 flow [2022-07-22 21:28:09,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-22 21:28:09,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-07-22 21:28:09,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2173 transitions. [2022-07-22 21:28:09,746 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.507947639083684 [2022-07-22 21:28:09,746 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2173 transitions. [2022-07-22 21:28:09,746 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2173 transitions. [2022-07-22 21:28:09,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:09,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2173 transitions. [2022-07-22 21:28:09,751 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 94.47826086956522) internal successors, (2173), 23 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states 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 21:28:09,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 186.0) internal successors, (4464), 24 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states 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 21:28:09,776 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 186.0) internal successors, (4464), 24 states have internal predecessors, (4464), 0 states have call successors, (0), 0 states 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 21:28:09,776 INFO L186 Difference]: Start difference. First operand has 222 places, 214 transitions, 1217 flow. Second operand 23 states and 2173 transitions. [2022-07-22 21:28:09,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 280 transitions, 2021 flow [2022-07-22 21:28:09,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 280 transitions, 1939 flow, removed 25 selfloop flow, removed 5 redundant places. [2022-07-22 21:28:09,802 INFO L242 Difference]: Finished difference. Result has 249 places, 231 transitions, 1506 flow [2022-07-22 21:28:09,802 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1506, PETRI_PLACES=249, PETRI_TRANSITIONS=231} [2022-07-22 21:28:09,803 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 77 predicate places. [2022-07-22 21:28:09,803 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 231 transitions, 1506 flow [2022-07-22 21:28:09,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 92.6875) internal successors, (1483), 16 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states 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 21:28:09,803 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:09,803 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:09,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 21:28:09,804 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:09,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:09,804 INFO L85 PathProgramCache]: Analyzing trace with hash 582936923, now seen corresponding path program 5 times [2022-07-22 21:28:09,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:09,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517519660] [2022-07-22 21:28:09,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:09,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:09,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:10,088 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 21:28:10,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:10,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517519660] [2022-07-22 21:28:10,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517519660] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:10,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:10,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-22 21:28:10,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309094561] [2022-07-22 21:28:10,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:10,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 21:28:10,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:10,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 21:28:10,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-07-22 21:28:10,094 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-07-22 21:28:10,094 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 231 transitions, 1506 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states 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 21:28:10,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:10,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-07-22 21:28:10,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:11,030 INFO L129 PetriNetUnfolder]: 834/2481 cut-off events. [2022-07-22 21:28:11,030 INFO L130 PetriNetUnfolder]: For 7664/7738 co-relation queries the response was YES. [2022-07-22 21:28:11,041 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7682 conditions, 2481 events. 834/2481 cut-off events. For 7664/7738 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 18453 event pairs, 112 based on Foata normal form. 49/2485 useless extension candidates. Maximal degree in co-relation 7631. Up to 538 conditions per place. [2022-07-22 21:28:11,054 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 162 selfloop transitions, 94 changer transitions 0/329 dead transitions. [2022-07-22 21:28:11,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 329 transitions, 2657 flow [2022-07-22 21:28:11,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:28:11,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:28:11,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1847 transitions. [2022-07-22 21:28:11,059 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5226372382569326 [2022-07-22 21:28:11,059 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1847 transitions. [2022-07-22 21:28:11,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1847 transitions. [2022-07-22 21:28:11,060 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:11,060 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1847 transitions. [2022-07-22 21:28:11,062 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 97.21052631578948) internal successors, (1847), 19 states have internal predecessors, (1847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:11,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states 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 21:28:11,066 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states 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 21:28:11,066 INFO L186 Difference]: Start difference. First operand has 249 places, 231 transitions, 1506 flow. Second operand 19 states and 1847 transitions. [2022-07-22 21:28:11,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 329 transitions, 2657 flow [2022-07-22 21:28:11,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 329 transitions, 2548 flow, removed 29 selfloop flow, removed 8 redundant places. [2022-07-22 21:28:11,091 INFO L242 Difference]: Finished difference. Result has 266 places, 259 transitions, 2054 flow [2022-07-22 21:28:11,092 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1415, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2054, PETRI_PLACES=266, PETRI_TRANSITIONS=259} [2022-07-22 21:28:11,093 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 94 predicate places. [2022-07-22 21:28:11,093 INFO L495 AbstractCegarLoop]: Abstraction has has 266 places, 259 transitions, 2054 flow [2022-07-22 21:28:11,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states 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 21:28:11,094 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:11,094 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:11,094 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 21:28:11,095 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:11,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:11,095 INFO L85 PathProgramCache]: Analyzing trace with hash 823583075, now seen corresponding path program 6 times [2022-07-22 21:28:11,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:11,097 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330822892] [2022-07-22 21:28:11,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:11,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:11,493 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 21:28:11,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:11,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330822892] [2022-07-22 21:28:11,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330822892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:11,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:11,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:28:11,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775360905] [2022-07-22 21:28:11,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:11,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:28:11,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:11,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:28:11,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:28:11,495 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-07-22 21:28:11,496 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 266 places, 259 transitions, 2054 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:11,496 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:11,496 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-07-22 21:28:11,496 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:12,945 INFO L129 PetriNetUnfolder]: 1333/3626 cut-off events. [2022-07-22 21:28:12,945 INFO L130 PetriNetUnfolder]: For 13151/13177 co-relation queries the response was YES. [2022-07-22 21:28:12,968 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12178 conditions, 3626 events. 1333/3626 cut-off events. For 13151/13177 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 28461 event pairs, 406 based on Foata normal form. 25/3553 useless extension candidates. Maximal degree in co-relation 12120. Up to 1515 conditions per place. [2022-07-22 21:28:12,978 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 216 selfloop transitions, 97 changer transitions 0/376 dead transitions. [2022-07-22 21:28:12,979 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 376 transitions, 3663 flow [2022-07-22 21:28:12,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:28:12,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:28:12,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1811 transitions. [2022-07-22 21:28:12,982 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.512450481041313 [2022-07-22 21:28:12,982 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1811 transitions. [2022-07-22 21:28:12,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1811 transitions. [2022-07-22 21:28:12,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:12,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1811 transitions. [2022-07-22 21:28:12,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.3157894736842) internal successors, (1811), 19 states have internal predecessors, (1811), 0 states have call successors, (0), 0 states 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 21:28:12,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states 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 21:28:12,988 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states 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 21:28:12,988 INFO L186 Difference]: Start difference. First operand has 266 places, 259 transitions, 2054 flow. Second operand 19 states and 1811 transitions. [2022-07-22 21:28:12,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 376 transitions, 3663 flow [2022-07-22 21:28:13,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 278 places, 376 transitions, 3544 flow, removed 41 selfloop flow, removed 6 redundant places. [2022-07-22 21:28:13,047 INFO L242 Difference]: Finished difference. Result has 288 places, 297 transitions, 2848 flow [2022-07-22 21:28:13,048 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2848, PETRI_PLACES=288, PETRI_TRANSITIONS=297} [2022-07-22 21:28:13,049 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 116 predicate places. [2022-07-22 21:28:13,049 INFO L495 AbstractCegarLoop]: Abstraction has has 288 places, 297 transitions, 2848 flow [2022-07-22 21:28:13,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:13,049 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:13,049 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:13,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 21:28:13,050 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:13,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:13,051 INFO L85 PathProgramCache]: Analyzing trace with hash -330867283, now seen corresponding path program 7 times [2022-07-22 21:28:13,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:13,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951009055] [2022-07-22 21:28:13,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:13,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:13,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:13,478 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 21:28:13,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:13,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951009055] [2022-07-22 21:28:13,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951009055] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:13,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:13,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:28:13,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764143398] [2022-07-22 21:28:13,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:13,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:28:13,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:13,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:28:13,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:28:13,482 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-07-22 21:28:13,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 297 transitions, 2848 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:13,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:13,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-07-22 21:28:13,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:16,174 INFO L129 PetriNetUnfolder]: 1706/4800 cut-off events. [2022-07-22 21:28:16,175 INFO L130 PetriNetUnfolder]: For 20182/20204 co-relation queries the response was YES. [2022-07-22 21:28:16,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17005 conditions, 4800 events. 1706/4800 cut-off events. For 20182/20204 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 41288 event pairs, 336 based on Foata normal form. 19/4702 useless extension candidates. Maximal degree in co-relation 16937. Up to 1021 conditions per place. [2022-07-22 21:28:16,207 INFO L132 encePairwiseOnDemand]: 157/186 looper letters, 298 selfloop transitions, 178 changer transitions 0/539 dead transitions. [2022-07-22 21:28:16,208 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 539 transitions, 6073 flow [2022-07-22 21:28:16,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 21:28:16,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-07-22 21:28:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2751 transitions. [2022-07-22 21:28:16,223 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5100111234705228 [2022-07-22 21:28:16,224 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2751 transitions. [2022-07-22 21:28:16,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2751 transitions. [2022-07-22 21:28:16,224 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:16,224 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2751 transitions. [2022-07-22 21:28:16,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 94.86206896551724) internal successors, (2751), 29 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states 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 21:28:16,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states 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 21:28:16,232 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 186.0) internal successors, (5580), 30 states have internal predecessors, (5580), 0 states have call successors, (0), 0 states 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 21:28:16,232 INFO L186 Difference]: Start difference. First operand has 288 places, 297 transitions, 2848 flow. Second operand 29 states and 2751 transitions. [2022-07-22 21:28:16,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 539 transitions, 6073 flow [2022-07-22 21:28:16,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 539 transitions, 5961 flow, removed 38 selfloop flow, removed 6 redundant places. [2022-07-22 21:28:16,330 INFO L242 Difference]: Finished difference. Result has 327 places, 399 transitions, 4828 flow [2022-07-22 21:28:16,331 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=2748, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=4828, PETRI_PLACES=327, PETRI_TRANSITIONS=399} [2022-07-22 21:28:16,332 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 155 predicate places. [2022-07-22 21:28:16,332 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 399 transitions, 4828 flow [2022-07-22 21:28:16,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:16,333 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:16,333 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:16,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 21:28:16,333 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:16,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash 2020415377, now seen corresponding path program 8 times [2022-07-22 21:28:16,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:16,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303290606] [2022-07-22 21:28:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:16,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:16,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:16,755 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 21:28:16,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:16,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303290606] [2022-07-22 21:28:16,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303290606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:16,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:16,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:28:16,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038899863] [2022-07-22 21:28:16,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:16,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:28:16,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:16,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:28:16,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:28:16,757 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-07-22 21:28:16,758 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 399 transitions, 4828 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:16,758 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:16,758 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-07-22 21:28:16,758 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:18,664 INFO L129 PetriNetUnfolder]: 2053/5991 cut-off events. [2022-07-22 21:28:18,665 INFO L130 PetriNetUnfolder]: For 32784/32784 co-relation queries the response was YES. [2022-07-22 21:28:18,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23067 conditions, 5991 events. 2053/5991 cut-off events. For 32784/32784 co-relation queries the response was YES. Maximal size of possible extension queue 302. Compared 54268 event pairs, 1045 based on Foata normal form. 1/5837 useless extension candidates. Maximal degree in co-relation 22982. Up to 2353 conditions per place. [2022-07-22 21:28:18,719 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 324 selfloop transitions, 144 changer transitions 0/531 dead transitions. [2022-07-22 21:28:18,720 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 531 transitions, 7128 flow [2022-07-22 21:28:18,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:28:18,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:28:18,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1886 transitions. [2022-07-22 21:28:18,722 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5069892473118279 [2022-07-22 21:28:18,722 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1886 transitions. [2022-07-22 21:28:18,722 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1886 transitions. [2022-07-22 21:28:18,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:18,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1886 transitions. [2022-07-22 21:28:18,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 94.3) internal successors, (1886), 20 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 21:28:18,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states 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 21:28:18,728 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states 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 21:28:18,728 INFO L186 Difference]: Start difference. First operand has 327 places, 399 transitions, 4828 flow. Second operand 20 states and 1886 transitions. [2022-07-22 21:28:18,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 531 transitions, 7128 flow [2022-07-22 21:28:18,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 531 transitions, 6930 flow, removed 65 selfloop flow, removed 7 redundant places. [2022-07-22 21:28:18,977 INFO L242 Difference]: Finished difference. Result has 350 places, 438 transitions, 5696 flow [2022-07-22 21:28:18,978 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=4671, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=5696, PETRI_PLACES=350, PETRI_TRANSITIONS=438} [2022-07-22 21:28:18,979 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 178 predicate places. [2022-07-22 21:28:18,979 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 438 transitions, 5696 flow [2022-07-22 21:28:18,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:18,979 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:18,979 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:18,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 21:28:18,980 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:18,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:18,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1498580403, now seen corresponding path program 9 times [2022-07-22 21:28:18,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:18,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [360311398] [2022-07-22 21:28:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:18,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:19,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:19,467 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 21:28:19,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:19,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [360311398] [2022-07-22 21:28:19,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [360311398] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:19,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:19,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:28:19,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737712619] [2022-07-22 21:28:19,468 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:19,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:28:19,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:19,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:28:19,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=288, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:28:19,470 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-07-22 21:28:19,471 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 438 transitions, 5696 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states 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 21:28:19,471 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:19,471 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-07-22 21:28:19,471 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:22,344 INFO L129 PetriNetUnfolder]: 2580/7776 cut-off events. [2022-07-22 21:28:22,344 INFO L130 PetriNetUnfolder]: For 45991/46023 co-relation queries the response was YES. [2022-07-22 21:28:22,400 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30179 conditions, 7776 events. 2580/7776 cut-off events. For 45991/46023 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 76908 event pairs, 676 based on Foata normal form. 26/7606 useless extension candidates. Maximal degree in co-relation 30082. Up to 1645 conditions per place. [2022-07-22 21:28:22,422 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 400 selfloop transitions, 244 changer transitions 0/707 dead transitions. [2022-07-22 21:28:22,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 707 transitions, 10527 flow [2022-07-22 21:28:22,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:28:22,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:28:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2012 transitions. [2022-07-22 21:28:22,426 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.51510496671787 [2022-07-22 21:28:22,426 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2012 transitions. [2022-07-22 21:28:22,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2012 transitions. [2022-07-22 21:28:22,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:22,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2012 transitions. [2022-07-22 21:28:22,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 95.80952380952381) internal successors, (2012), 21 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states 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 21:28:22,433 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states 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 21:28:22,433 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states 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 21:28:22,433 INFO L186 Difference]: Start difference. First operand has 350 places, 438 transitions, 5696 flow. Second operand 21 states and 2012 transitions. [2022-07-22 21:28:22,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 707 transitions, 10527 flow [2022-07-22 21:28:22,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 707 transitions, 10436 flow, removed 39 selfloop flow, removed 5 redundant places. [2022-07-22 21:28:22,728 INFO L242 Difference]: Finished difference. Result has 375 places, 537 transitions, 8317 flow [2022-07-22 21:28:22,729 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=5605, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8317, PETRI_PLACES=375, PETRI_TRANSITIONS=537} [2022-07-22 21:28:22,729 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 203 predicate places. [2022-07-22 21:28:22,729 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 537 transitions, 8317 flow [2022-07-22 21:28:22,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states 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 21:28:22,730 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:22,730 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:22,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 21:28:22,730 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:22,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:22,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1776002135, now seen corresponding path program 10 times [2022-07-22 21:28:22,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:22,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776817967] [2022-07-22 21:28:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:22,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:23,214 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 21:28:23,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:23,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776817967] [2022-07-22 21:28:23,215 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776817967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:23,215 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:23,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 21:28:23,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480039316] [2022-07-22 21:28:23,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:23,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 21:28:23,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:23,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 21:28:23,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2022-07-22 21:28:23,216 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-07-22 21:28:23,217 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 537 transitions, 8317 flow. Second operand has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states 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 21:28:23,217 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:23,217 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-07-22 21:28:23,218 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:26,381 INFO L129 PetriNetUnfolder]: 2573/7926 cut-off events. [2022-07-22 21:28:26,381 INFO L130 PetriNetUnfolder]: For 60447/60469 co-relation queries the response was YES. [2022-07-22 21:28:26,433 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33779 conditions, 7926 events. 2573/7926 cut-off events. For 60447/60469 co-relation queries the response was YES. Maximal size of possible extension queue 431. Compared 79219 event pairs, 1087 based on Foata normal form. 11/7747 useless extension candidates. Maximal degree in co-relation 33672. Up to 2418 conditions per place. [2022-07-22 21:28:26,451 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 416 selfloop transitions, 239 changer transitions 0/718 dead transitions. [2022-07-22 21:28:26,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 400 places, 718 transitions, 12011 flow [2022-07-22 21:28:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-22 21:28:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2022-07-22 21:28:26,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 2430 transitions. [2022-07-22 21:28:26,454 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5024813895781638 [2022-07-22 21:28:26,454 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 2430 transitions. [2022-07-22 21:28:26,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 2430 transitions. [2022-07-22 21:28:26,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:26,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 2430 transitions. [2022-07-22 21:28:26,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 93.46153846153847) internal successors, (2430), 26 states have internal predecessors, (2430), 0 states have call successors, (0), 0 states 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 21:28:26,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states 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 21:28:26,461 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 186.0) internal successors, (5022), 27 states have internal predecessors, (5022), 0 states have call successors, (0), 0 states 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 21:28:26,461 INFO L186 Difference]: Start difference. First operand has 375 places, 537 transitions, 8317 flow. Second operand 26 states and 2430 transitions. [2022-07-22 21:28:26,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 400 places, 718 transitions, 12011 flow [2022-07-22 21:28:26,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 718 transitions, 11898 flow, removed 31 selfloop flow, removed 6 redundant places. [2022-07-22 21:28:26,814 INFO L242 Difference]: Finished difference. Result has 404 places, 584 transitions, 9906 flow [2022-07-22 21:28:26,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=8208, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=9906, PETRI_PLACES=404, PETRI_TRANSITIONS=584} [2022-07-22 21:28:26,816 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 232 predicate places. [2022-07-22 21:28:26,816 INFO L495 AbstractCegarLoop]: Abstraction has has 404 places, 584 transitions, 9906 flow [2022-07-22 21:28:26,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 90.21052631578948) internal successors, (1714), 19 states have internal predecessors, (1714), 0 states have call successors, (0), 0 states 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 21:28:26,816 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:26,817 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:26,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 21:28:26,817 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:26,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:26,817 INFO L85 PathProgramCache]: Analyzing trace with hash 310198337, now seen corresponding path program 11 times [2022-07-22 21:28:26,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:26,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677673905] [2022-07-22 21:28:26,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:26,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:26,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:27,212 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 21:28:27,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:27,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677673905] [2022-07-22 21:28:27,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677673905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:27,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:27,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:28:27,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493084604] [2022-07-22 21:28:27,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:27,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:28:27,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:27,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:28:27,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:28:27,214 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-07-22 21:28:27,215 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 404 places, 584 transitions, 9906 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:27,215 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:27,215 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-07-22 21:28:27,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:30,124 INFO L129 PetriNetUnfolder]: 2573/7908 cut-off events. [2022-07-22 21:28:30,124 INFO L130 PetriNetUnfolder]: For 66248/66276 co-relation queries the response was YES. [2022-07-22 21:28:30,182 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34469 conditions, 7908 events. 2573/7908 cut-off events. For 66248/66276 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 79086 event pairs, 897 based on Foata normal form. 17/7743 useless extension candidates. Maximal degree in co-relation 34351. Up to 2689 conditions per place. [2022-07-22 21:28:30,200 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 405 selfloop transitions, 243 changer transitions 0/711 dead transitions. [2022-07-22 21:28:30,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 711 transitions, 12541 flow [2022-07-22 21:28:30,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 21:28:30,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-22 21:28:30,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1989 transitions. [2022-07-22 21:28:30,203 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5092165898617511 [2022-07-22 21:28:30,203 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1989 transitions. [2022-07-22 21:28:30,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1989 transitions. [2022-07-22 21:28:30,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:30,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1989 transitions. [2022-07-22 21:28:30,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 94.71428571428571) internal successors, (1989), 21 states have internal predecessors, (1989), 0 states have call successors, (0), 0 states 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 21:28:30,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states 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 21:28:30,208 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 186.0) internal successors, (4092), 22 states have internal predecessors, (4092), 0 states have call successors, (0), 0 states 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 21:28:30,208 INFO L186 Difference]: Start difference. First operand has 404 places, 584 transitions, 9906 flow. Second operand 21 states and 1989 transitions. [2022-07-22 21:28:30,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 711 transitions, 12541 flow [2022-07-22 21:28:30,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 711 transitions, 12303 flow, removed 88 selfloop flow, removed 7 redundant places. [2022-07-22 21:28:30,541 INFO L242 Difference]: Finished difference. Result has 422 places, 604 transitions, 10625 flow [2022-07-22 21:28:30,542 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=9672, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=584, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=223, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=10625, PETRI_PLACES=422, PETRI_TRANSITIONS=604} [2022-07-22 21:28:30,542 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 250 predicate places. [2022-07-22 21:28:30,542 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 604 transitions, 10625 flow [2022-07-22 21:28:30,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:30,543 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:30,543 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:30,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 21:28:30,543 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:30,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:30,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1166252689, now seen corresponding path program 12 times [2022-07-22 21:28:30,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:30,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593718540] [2022-07-22 21:28:30,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:30,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:30,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:30,892 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 21:28:30,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:30,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593718540] [2022-07-22 21:28:30,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593718540] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:30,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:30,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:28:30,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741744986] [2022-07-22 21:28:30,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:30,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:28:30,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:30,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:28:30,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:28:30,894 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-07-22 21:28:30,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 604 transitions, 10625 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:30,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:30,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-07-22 21:28:30,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:34,753 INFO L129 PetriNetUnfolder]: 3592/10918 cut-off events. [2022-07-22 21:28:34,753 INFO L130 PetriNetUnfolder]: For 88874/88924 co-relation queries the response was YES. [2022-07-22 21:28:34,865 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47353 conditions, 10918 events. 3592/10918 cut-off events. For 88874/88924 co-relation queries the response was YES. Maximal size of possible extension queue 640. Compared 117484 event pairs, 1305 based on Foata normal form. 30/10707 useless extension candidates. Maximal degree in co-relation 47230. Up to 3091 conditions per place. [2022-07-22 21:28:34,898 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 484 selfloop transitions, 259 changer transitions 0/806 dead transitions. [2022-07-22 21:28:34,899 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 806 transitions, 15182 flow [2022-07-22 21:28:34,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:28:34,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:28:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1810 transitions. [2022-07-22 21:28:34,901 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5121675155631012 [2022-07-22 21:28:34,901 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1810 transitions. [2022-07-22 21:28:34,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1810 transitions. [2022-07-22 21:28:34,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:34,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1810 transitions. [2022-07-22 21:28:34,904 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.26315789473684) internal successors, (1810), 19 states have internal predecessors, (1810), 0 states have call successors, (0), 0 states 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 21:28:34,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states 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 21:28:34,907 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states 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 21:28:34,907 INFO L186 Difference]: Start difference. First operand has 422 places, 604 transitions, 10625 flow. Second operand 19 states and 1810 transitions. [2022-07-22 21:28:34,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 806 transitions, 15182 flow [2022-07-22 21:28:35,509 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 806 transitions, 14795 flow, removed 80 selfloop flow, removed 14 redundant places. [2022-07-22 21:28:35,521 INFO L242 Difference]: Finished difference. Result has 436 places, 681 transitions, 12862 flow [2022-07-22 21:28:35,522 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=10268, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=604, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=185, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=367, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=12862, PETRI_PLACES=436, PETRI_TRANSITIONS=681} [2022-07-22 21:28:35,522 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 264 predicate places. [2022-07-22 21:28:35,522 INFO L495 AbstractCegarLoop]: Abstraction has has 436 places, 681 transitions, 12862 flow [2022-07-22 21:28:35,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:35,523 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:35,523 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:35,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 21:28:35,523 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:35,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:35,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1776593229, now seen corresponding path program 13 times [2022-07-22 21:28:35,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:35,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763733630] [2022-07-22 21:28:35,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:35,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:35,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:35,876 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 21:28:35,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:35,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763733630] [2022-07-22 21:28:35,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763733630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:35,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:35,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:28:35,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401749781] [2022-07-22 21:28:35,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:35,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:28:35,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:35,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:28:35,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:28:35,878 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-07-22 21:28:35,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 681 transitions, 12862 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:35,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:35,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-07-22 21:28:35,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:40,150 INFO L129 PetriNetUnfolder]: 3604/11144 cut-off events. [2022-07-22 21:28:40,150 INFO L130 PetriNetUnfolder]: For 103213/103317 co-relation queries the response was YES. [2022-07-22 21:28:40,261 INFO L84 FinitePrefix]: Finished finitePrefix Result has 49592 conditions, 11144 events. 3604/11144 cut-off events. For 103213/103317 co-relation queries the response was YES. Maximal size of possible extension queue 648. Compared 120698 event pairs, 1432 based on Foata normal form. 49/10957 useless extension candidates. Maximal degree in co-relation 49466. Up to 3091 conditions per place. [2022-07-22 21:28:40,293 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 542 selfloop transitions, 265 changer transitions 0/870 dead transitions. [2022-07-22 21:28:40,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 870 transitions, 17220 flow [2022-07-22 21:28:40,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:28:40,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:28:40,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1823 transitions. [2022-07-22 21:28:40,295 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5158460667798529 [2022-07-22 21:28:40,296 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1823 transitions. [2022-07-22 21:28:40,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1823 transitions. [2022-07-22 21:28:40,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:40,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1823 transitions. [2022-07-22 21:28:40,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 95.94736842105263) internal successors, (1823), 19 states have internal predecessors, (1823), 0 states have call successors, (0), 0 states 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 21:28:40,300 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states 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 21:28:40,300 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states 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 21:28:40,300 INFO L186 Difference]: Start difference. First operand has 436 places, 681 transitions, 12862 flow. Second operand 19 states and 1823 transitions. [2022-07-22 21:28:40,301 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 870 transitions, 17220 flow [2022-07-22 21:28:40,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 870 transitions, 16991 flow, removed 103 selfloop flow, removed 5 redundant places. [2022-07-22 21:28:40,974 INFO L242 Difference]: Finished difference. Result has 459 places, 741 transitions, 14987 flow [2022-07-22 21:28:40,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=12639, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=205, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=424, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=14987, PETRI_PLACES=459, PETRI_TRANSITIONS=741} [2022-07-22 21:28:40,975 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 287 predicate places. [2022-07-22 21:28:40,975 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 741 transitions, 14987 flow [2022-07-22 21:28:40,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:40,976 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:40,976 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:40,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 21:28:40,976 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:40,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:40,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1682151881, now seen corresponding path program 14 times [2022-07-22 21:28:40,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:40,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041491785] [2022-07-22 21:28:40,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:40,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:41,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:41,463 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 21:28:41,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:41,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041491785] [2022-07-22 21:28:41,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041491785] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:41,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:41,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:28:41,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330690051] [2022-07-22 21:28:41,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:41,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:28:41,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:41,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:28:41,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:28:41,468 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-07-22 21:28:41,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 741 transitions, 14987 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:41,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:41,469 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-07-22 21:28:41,469 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:46,353 INFO L129 PetriNetUnfolder]: 3602/11212 cut-off events. [2022-07-22 21:28:46,353 INFO L130 PetriNetUnfolder]: For 117805/117841 co-relation queries the response was YES. [2022-07-22 21:28:46,478 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51471 conditions, 11212 events. 3602/11212 cut-off events. For 117805/117841 co-relation queries the response was YES. Maximal size of possible extension queue 652. Compared 121979 event pairs, 1341 based on Foata normal form. 23/10992 useless extension candidates. Maximal degree in co-relation 51335. Up to 3091 conditions per place. [2022-07-22 21:28:46,512 INFO L132 encePairwiseOnDemand]: 158/186 looper letters, 561 selfloop transitions, 325 changer transitions 0/949 dead transitions. [2022-07-22 21:28:46,512 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 949 transitions, 19608 flow [2022-07-22 21:28:46,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 21:28:46,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-07-22 21:28:46,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2557 transitions. [2022-07-22 21:28:46,516 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5091596973317404 [2022-07-22 21:28:46,516 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2557 transitions. [2022-07-22 21:28:46,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2557 transitions. [2022-07-22 21:28:46,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:46,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2557 transitions. [2022-07-22 21:28:46,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 94.70370370370371) internal successors, (2557), 27 states have internal predecessors, (2557), 0 states have call successors, (0), 0 states 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 21:28:46,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 186.0) internal successors, (5208), 28 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states 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 21:28:46,522 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 186.0) internal successors, (5208), 28 states have internal predecessors, (5208), 0 states have call successors, (0), 0 states 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 21:28:46,522 INFO L186 Difference]: Start difference. First operand has 459 places, 741 transitions, 14987 flow. Second operand 27 states and 2557 transitions. [2022-07-22 21:28:46,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 949 transitions, 19608 flow [2022-07-22 21:28:47,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 949 transitions, 19169 flow, removed 170 selfloop flow, removed 6 redundant places. [2022-07-22 21:28:47,350 INFO L242 Difference]: Finished difference. Result has 491 places, 805 transitions, 17174 flow [2022-07-22 21:28:47,350 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=14595, PETRI_DIFFERENCE_MINUEND_PLACES=453, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=262, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=17174, PETRI_PLACES=491, PETRI_TRANSITIONS=805} [2022-07-22 21:28:47,351 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 319 predicate places. [2022-07-22 21:28:47,351 INFO L495 AbstractCegarLoop]: Abstraction has has 491 places, 805 transitions, 17174 flow [2022-07-22 21:28:47,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:47,351 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:47,351 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:47,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 21:28:47,352 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:47,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:47,352 INFO L85 PathProgramCache]: Analyzing trace with hash 770554321, now seen corresponding path program 15 times [2022-07-22 21:28:47,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:47,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321732381] [2022-07-22 21:28:47,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:47,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:47,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:47,760 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 21:28:47,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:47,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321732381] [2022-07-22 21:28:47,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321732381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:47,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:47,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:28:47,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981711520] [2022-07-22 21:28:47,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:47,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:28:47,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:47,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:28:47,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:28:47,762 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-07-22 21:28:47,763 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 491 places, 805 transitions, 17174 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:47,763 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:47,763 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-07-22 21:28:47,763 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:52,240 INFO L129 PetriNetUnfolder]: 3599/11294 cut-off events. [2022-07-22 21:28:52,241 INFO L130 PetriNetUnfolder]: For 133671/133774 co-relation queries the response was YES. [2022-07-22 21:28:52,455 INFO L84 FinitePrefix]: Finished finitePrefix Result has 53614 conditions, 11294 events. 3599/11294 cut-off events. For 133671/133774 co-relation queries the response was YES. Maximal size of possible extension queue 654. Compared 122843 event pairs, 1420 based on Foata normal form. 48/11107 useless extension candidates. Maximal degree in co-relation 53467. Up to 3091 conditions per place. [2022-07-22 21:28:52,498 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 562 selfloop transitions, 314 changer transitions 0/939 dead transitions. [2022-07-22 21:28:52,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 939 transitions, 20824 flow [2022-07-22 21:28:52,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 21:28:52,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-22 21:28:52,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1902 transitions. [2022-07-22 21:28:52,501 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5112903225806451 [2022-07-22 21:28:52,501 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1902 transitions. [2022-07-22 21:28:52,501 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1902 transitions. [2022-07-22 21:28:52,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:52,502 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1902 transitions. [2022-07-22 21:28:52,504 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 95.1) internal successors, (1902), 20 states have internal predecessors, (1902), 0 states have call successors, (0), 0 states 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 21:28:52,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states 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 21:28:52,507 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 186.0) internal successors, (3906), 21 states have internal predecessors, (3906), 0 states have call successors, (0), 0 states 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 21:28:52,507 INFO L186 Difference]: Start difference. First operand has 491 places, 805 transitions, 17174 flow. Second operand 20 states and 1902 transitions. [2022-07-22 21:28:52,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 510 places, 939 transitions, 20824 flow [2022-07-22 21:28:53,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 502 places, 939 transitions, 20466 flow, removed 110 selfloop flow, removed 8 redundant places. [2022-07-22 21:28:53,630 INFO L242 Difference]: Finished difference. Result has 510 places, 836 transitions, 18697 flow [2022-07-22 21:28:53,631 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=16816, PETRI_DIFFERENCE_MINUEND_PLACES=483, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=283, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=18697, PETRI_PLACES=510, PETRI_TRANSITIONS=836} [2022-07-22 21:28:53,632 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 338 predicate places. [2022-07-22 21:28:53,633 INFO L495 AbstractCegarLoop]: Abstraction has has 510 places, 836 transitions, 18697 flow [2022-07-22 21:28:53,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:28:53,633 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:53,633 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:53,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 21:28:53,633 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:53,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:53,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1054814223, now seen corresponding path program 16 times [2022-07-22 21:28:53,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:53,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543940148] [2022-07-22 21:28:53,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:53,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:28:53,962 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 21:28:53,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:28:53,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543940148] [2022-07-22 21:28:53,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543940148] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:28:53,963 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:28:53,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-22 21:28:53,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768204330] [2022-07-22 21:28:53,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:28:53,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 21:28:53,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:28:53,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 21:28:53,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-22 21:28:53,966 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2022-07-22 21:28:53,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 836 transitions, 18697 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states 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 21:28:53,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:28:53,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2022-07-22 21:28:53,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-22 21:28:58,262 INFO L129 PetriNetUnfolder]: 3208/10876 cut-off events. [2022-07-22 21:28:58,262 INFO L130 PetriNetUnfolder]: For 147758/148017 co-relation queries the response was YES. [2022-07-22 21:28:58,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 51864 conditions, 10876 events. 3208/10876 cut-off events. For 147758/148017 co-relation queries the response was YES. Maximal size of possible extension queue 621. Compared 120520 event pairs, 1375 based on Foata normal form. 196/10815 useless extension candidates. Maximal degree in co-relation 51709. Up to 3232 conditions per place. [2022-07-22 21:28:58,760 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 608 selfloop transitions, 321 changer transitions 0/1022 dead transitions. [2022-07-22 21:28:58,760 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 1022 transitions, 23680 flow [2022-07-22 21:28:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 21:28:58,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-07-22 21:28:58,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1836 transitions. [2022-07-22 21:28:58,762 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5195246179966044 [2022-07-22 21:28:58,762 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1836 transitions. [2022-07-22 21:28:58,763 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1836 transitions. [2022-07-22 21:28:58,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-22 21:28:58,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1836 transitions. [2022-07-22 21:28:58,765 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 96.63157894736842) internal successors, (1836), 19 states have internal predecessors, (1836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 21:28:58,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states 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 21:28:58,767 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 186.0) internal successors, (3720), 20 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states 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 21:28:58,767 INFO L186 Difference]: Start difference. First operand has 510 places, 836 transitions, 18697 flow. Second operand 19 states and 1836 transitions. [2022-07-22 21:28:58,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 1022 transitions, 23680 flow [2022-07-22 21:28:59,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 521 places, 1022 transitions, 23344 flow, removed 115 selfloop flow, removed 7 redundant places. [2022-07-22 21:28:59,848 INFO L242 Difference]: Finished difference. Result has 529 places, 879 transitions, 20274 flow [2022-07-22 21:28:59,849 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=18370, PETRI_DIFFERENCE_MINUEND_PLACES=503, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=836, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=278, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=20274, PETRI_PLACES=529, PETRI_TRANSITIONS=879} [2022-07-22 21:28:59,849 INFO L279 CegarLoopForPetriNet]: 172 programPoint places, 357 predicate places. [2022-07-22 21:28:59,849 INFO L495 AbstractCegarLoop]: Abstraction has has 529 places, 879 transitions, 20274 flow [2022-07-22 21:28:59,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states 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 21:28:59,850 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-22 21:28:59,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 21:28:59,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 21:28:59,850 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-07-22 21:28:59,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 21:28:59,851 INFO L85 PathProgramCache]: Analyzing trace with hash -2115335721, now seen corresponding path program 17 times [2022-07-22 21:28:59,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 21:28:59,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060168302] [2022-07-22 21:28:59,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 21:28:59,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 21:28:59,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 21:29:00,230 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 21:29:00,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 21:29:00,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060168302] [2022-07-22 21:29:00,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060168302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 21:29:00,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 21:29:00,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 21:29:00,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32452030] [2022-07-22 21:29:00,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 21:29:00,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 21:29:00,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 21:29:00,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 21:29:00,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-22 21:29:00,233 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2022-07-22 21:29:00,233 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 879 transitions, 20274 flow. Second operand has 18 states, 18 states have (on average 90.38888888888889) internal successors, (1627), 18 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states 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 21:29:00,233 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-22 21:29:00,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2022-07-22 21:29:00,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand