./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 c3fed411 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-tmp.no-commuhash-c3fed41 [2021-12-16 02:52:52,392 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 02:52:52,394 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 02:52:52,435 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 02:52:52,437 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 02:52:52,440 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 02:52:52,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 02:52:52,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 02:52:52,448 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 02:52:52,450 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 02:52:52,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 02:52:52,452 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 02:52:52,452 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 02:52:52,456 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 02:52:52,457 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 02:52:52,459 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 02:52:52,462 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 02:52:52,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 02:52:52,464 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 02:52:52,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 02:52:52,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 02:52:52,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 02:52:52,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 02:52:52,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 02:52:52,477 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 02:52:52,479 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 02:52:52,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 02:52:52,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 02:52:52,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 02:52:52,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 02:52:52,483 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 02:52:52,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 02:52:52,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 02:52:52,486 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 02:52:52,487 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 02:52:52,487 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 02:52:52,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 02:52:52,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 02:52:52,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 02:52:52,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 02:52:52,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 02:52:52,490 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 02:52:52,523 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 02:52:52,524 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 02:52:52,525 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 02:52:52,525 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 02:52:52,526 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 02:52:52,526 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 02:52:52,526 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 02:52:52,526 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 02:52:52,527 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 02:52:52,527 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 02:52:52,528 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 02:52:52,528 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 02:52:52,528 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 02:52:52,528 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 02:52:52,528 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 02:52:52,529 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 02:52:52,529 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 02:52:52,529 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 02:52:52,529 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 02:52:52,529 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 02:52:52,530 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 02:52:52,530 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 02:52:52,530 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 02:52:52,530 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 02:52:52,530 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:52:52,531 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 02:52:52,531 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 02:52:52,531 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 02:52:52,531 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 02:52:52,531 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 02:52:52,532 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 02:52:52,532 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 02:52:52,532 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 02:52:52,532 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 02:52:52,532 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02b1c265b98bd14cc97fe77543b4e06699576e2091fa3d4102d013e6b3937418 [2021-12-16 02:52:52,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 02:52:52,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 02:52:52,769 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 02:52:52,770 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 02:52:52,777 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 02:52:52,778 INFO L432 ainManager$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 [2021-12-16 02:52:52,846 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8698b3a5/a8af53fd08754786adc15226267280c2/FLAGf15e94ec9 [2021-12-16 02:52:53,381 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 02:52:53,382 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-races/race-3_2-container_of-global.i [2021-12-16 02:52:53,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8698b3a5/a8af53fd08754786adc15226267280c2/FLAGf15e94ec9 [2021-12-16 02:52:53,643 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8698b3a5/a8af53fd08754786adc15226267280c2 [2021-12-16 02:52:53,646 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 02:52:53,648 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 02:52:53,652 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 02:52:53,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 02:52:53,655 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 02:52:53,655 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:52:53" (1/1) ... [2021-12-16 02:52:53,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5839db7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:53, skipping insertion in model container [2021-12-16 02:52:53,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 02:52:53" (1/1) ... [2021-12-16 02:52:53,662 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 02:52:53,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 02:52:53,843 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-16 02:52:54,213 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] [2021-12-16 02:52:54,249 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:52:54,256 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 02:52:54,267 WARN L610 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2021-12-16 02:52:54,307 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] [2021-12-16 02:52:54,332 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 02:52:54,423 INFO L208 MainTranslator]: Completed translation [2021-12-16 02:52:54,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:54 WrapperNode [2021-12-16 02:52:54,424 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 02:52:54,425 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 02:52:54,425 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 02:52:54,425 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 02:52:54,432 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:54" (1/1) ... [2021-12-16 02:52:54,454 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:54" (1/1) ... [2021-12-16 02:52:54,477 INFO L137 Inliner]: procedures = 468, calls = 52, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 134 [2021-12-16 02:52:54,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 02:52:54,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 02:52:54,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 02:52:54,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 02:52:54,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:54" (1/1) ... [2021-12-16 02:52:54,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:54" (1/1) ... [2021-12-16 02:52:54,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:54" (1/1) ... [2021-12-16 02:52:54,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:54" (1/1) ... [2021-12-16 02:52:54,500 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:54" (1/1) ... [2021-12-16 02:52:54,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:54" (1/1) ... [2021-12-16 02:52:54,505 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:54" (1/1) ... [2021-12-16 02:52:54,509 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 02:52:54,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 02:52:54,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 02:52:54,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 02:52:54,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:54" (1/1) ... [2021-12-16 02:52:54,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 02:52:54,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 02:52:54,540 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) [2021-12-16 02:52:54,558 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 [2021-12-16 02:52:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-16 02:52:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 02:52:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-16 02:52:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 02:52:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 02:52:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 02:52:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 02:52:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 02:52:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2021-12-16 02:52:54,587 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2021-12-16 02:52:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 02:52:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 02:52:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 02:52:54,589 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 02:52:54,828 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 02:52:54,829 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 02:52:55,027 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 02:52:55,044 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 02:52:55,045 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 02:52:55,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:52:55 BoogieIcfgContainer [2021-12-16 02:52:55,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 02:52:55,061 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 02:52:55,061 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 02:52:55,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 02:52:55,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 02:52:53" (1/3) ... [2021-12-16 02:52:55,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3118dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:52:55, skipping insertion in model container [2021-12-16 02:52:55,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 02:52:54" (2/3) ... [2021-12-16 02:52:55,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a3118dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 02:52:55, skipping insertion in model container [2021-12-16 02:52:55,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 02:52:55" (3/3) ... [2021-12-16 02:52:55,069 INFO L111 eAbstractionObserver]: Analyzing ICFG race-3_2-container_of-global.i [2021-12-16 02:52:55,073 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 02:52:55,074 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 02:52:55,074 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-16 02:52:55,074 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 02:52:55,107 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,107 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,107 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,108 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,108 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,108 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,109 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,109 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,109 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,109 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,109 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,110 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,110 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,110 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,110 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,111 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,112 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,112 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,113 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,113 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,113 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,114 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,114 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,114 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,115 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,115 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,115 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,116 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,116 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,116 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,116 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,116 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,117 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,117 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,117 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,117 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,117 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,117 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,118 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,118 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,118 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,118 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,119 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,119 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,119 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,119 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,120 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,120 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,120 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,120 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,121 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,121 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,121 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,121 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,121 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,122 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,122 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,122 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,122 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,122 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,122 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,123 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,123 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,123 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,123 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,123 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,124 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,124 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,124 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,124 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,125 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,125 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,126 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,126 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,126 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,126 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,126 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,127 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,127 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,128 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,130 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,130 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,130 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,131 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,131 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,131 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,131 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,132 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,132 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,136 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,136 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,137 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,140 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,140 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,140 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,140 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,140 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,141 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,141 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,141 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,141 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,142 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork0_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,143 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,143 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,143 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~data~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,144 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,144 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~lb~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,144 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#t~mem7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,144 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,144 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,144 WARN L322 ript$VariableManager]: TermVariabe my_callbackThread1of1ForFork1_~__mptr~0.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,145 WARN L322 ript$VariableManager]: TermVariabe |my_callbackThread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 02:52:55,152 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-12-16 02:52:55,202 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 02:52:55,215 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 02:52:55,215 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-12-16 02:52:55,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 184 places, 186 transitions, 388 flow [2021-12-16 02:52:55,326 INFO L129 PetriNetUnfolder]: 10/231 cut-off events. [2021-12-16 02:52:55,326 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-12-16 02:52:55,330 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 336 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. [2021-12-16 02:52:55,330 INFO L82 GeneralOperation]: Start removeDead. Operand has 184 places, 186 transitions, 388 flow [2021-12-16 02:52:55,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 172 transitions, 356 flow [2021-12-16 02:52:55,353 INFO L129 PetriNetUnfolder]: 0/46 cut-off events. [2021-12-16 02:52:55,353 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-12-16 02:52:55,354 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:55,355 INFO L254 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] [2021-12-16 02:52:55,356 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:52:55,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:55,362 INFO L85 PathProgramCache]: Analyzing trace with hash -34102460, now seen corresponding path program 1 times [2021-12-16 02:52:55,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:55,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117796283] [2021-12-16 02:52:55,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:55,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:55,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:55,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:55,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:55,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117796283] [2021-12-16 02:52:55,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117796283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:55,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:55,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:52:55,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318691081] [2021-12-16 02:52:55,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:55,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:52:55,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:55,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:52:55,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:52:55,864 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2021-12-16 02:52:55,870 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) [2021-12-16 02:52:55,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:55,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2021-12-16 02:52:55,871 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:56,232 INFO L129 PetriNetUnfolder]: 361/965 cut-off events. [2021-12-16 02:52:56,233 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-12-16 02:52:56,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1656 conditions, 965 events. 361/965 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 5057 event pairs, 216 based on Foata normal form. 20/933 useless extension candidates. Maximal degree in co-relation 1409. Up to 397 conditions per place. [2021-12-16 02:52:56,249 INFO L132 encePairwiseOnDemand]: 164/186 looper letters, 53 selfloop transitions, 17 changer transitions 1/168 dead transitions. [2021-12-16 02:52:56,249 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 168 transitions, 490 flow [2021-12-16 02:52:56,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 02:52:56,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-16 02:52:56,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1057 transitions. [2021-12-16 02:52:56,274 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6314217443249701 [2021-12-16 02:52:56,274 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1057 transitions. [2021-12-16 02:52:56,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1057 transitions. [2021-12-16 02:52:56,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:56,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1057 transitions. [2021-12-16 02:52:56,287 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) [2021-12-16 02:52:56,295 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) [2021-12-16 02:52:56,297 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) [2021-12-16 02:52:56,298 INFO L186 Difference]: Start difference. First operand has 172 places, 172 transitions, 356 flow. Second operand 9 states and 1057 transitions. [2021-12-16 02:52:56,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 168 transitions, 490 flow [2021-12-16 02:52:56,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 168 transitions, 482 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-16 02:52:56,307 INFO L242 Difference]: Finished difference. Result has 170 places, 161 transitions, 367 flow [2021-12-16 02:52:56,308 INFO L317 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} [2021-12-16 02:52:56,311 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -2 predicate places. [2021-12-16 02:52:56,311 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 161 transitions, 367 flow [2021-12-16 02:52:56,312 INFO L471 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) [2021-12-16 02:52:56,312 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:56,312 INFO L254 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] [2021-12-16 02:52:56,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 02:52:56,313 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:52:56,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:56,313 INFO L85 PathProgramCache]: Analyzing trace with hash -888642596, now seen corresponding path program 1 times [2021-12-16 02:52:56,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:56,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905923365] [2021-12-16 02:52:56,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:56,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:56,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:56,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:56,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905923365] [2021-12-16 02:52:56,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905923365] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:56,472 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:56,472 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:52:56,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788564956] [2021-12-16 02:52:56,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:56,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:52:56,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:56,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:52:56,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:52:56,477 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 186 [2021-12-16 02:52:56,478 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) [2021-12-16 02:52:56,478 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:56,478 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 186 [2021-12-16 02:52:56,478 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:56,733 INFO L129 PetriNetUnfolder]: 361/971 cut-off events. [2021-12-16 02:52:56,733 INFO L130 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2021-12-16 02:52:56,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1739 conditions, 971 events. 361/971 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5044 event pairs, 120 based on Foata normal form. 1/940 useless extension candidates. Maximal degree in co-relation 694. Up to 261 conditions per place. [2021-12-16 02:52:56,740 INFO L132 encePairwiseOnDemand]: 167/186 looper letters, 61 selfloop transitions, 18 changer transitions 1/176 dead transitions. [2021-12-16 02:52:56,741 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 176 transitions, 559 flow [2021-12-16 02:52:56,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 02:52:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-12-16 02:52:56,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1171 transitions. [2021-12-16 02:52:56,744 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6295698924731182 [2021-12-16 02:52:56,745 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1171 transitions. [2021-12-16 02:52:56,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1171 transitions. [2021-12-16 02:52:56,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:56,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1171 transitions. [2021-12-16 02:52:56,748 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) [2021-12-16 02:52:56,751 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) [2021-12-16 02:52:56,752 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) [2021-12-16 02:52:56,753 INFO L186 Difference]: Start difference. First operand has 170 places, 161 transitions, 367 flow. Second operand 10 states and 1171 transitions. [2021-12-16 02:52:56,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 176 transitions, 559 flow [2021-12-16 02:52:56,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 176 transitions, 530 flow, removed 0 selfloop flow, removed 7 redundant places. [2021-12-16 02:52:56,759 INFO L242 Difference]: Finished difference. Result has 171 places, 160 transitions, 378 flow [2021-12-16 02:52:56,759 INFO L317 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} [2021-12-16 02:52:56,760 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -1 predicate places. [2021-12-16 02:52:56,760 INFO L470 AbstractCegarLoop]: Abstraction has has 171 places, 160 transitions, 378 flow [2021-12-16 02:52:56,761 INFO L471 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) [2021-12-16 02:52:56,761 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:56,761 INFO L254 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] [2021-12-16 02:52:56,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 02:52:56,761 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:52:56,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:56,762 INFO L85 PathProgramCache]: Analyzing trace with hash -170107804, now seen corresponding path program 1 times [2021-12-16 02:52:56,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:56,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905994723] [2021-12-16 02:52:56,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:56,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:56,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:56,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:56,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905994723] [2021-12-16 02:52:56,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905994723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:56,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:56,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:52:56,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336286751] [2021-12-16 02:52:56,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:56,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:52:56,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:56,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:52:56,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:52:56,887 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2021-12-16 02:52:56,888 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) [2021-12-16 02:52:56,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:56,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2021-12-16 02:52:56,889 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:57,355 INFO L129 PetriNetUnfolder]: 832/1931 cut-off events. [2021-12-16 02:52:57,356 INFO L130 PetriNetUnfolder]: For 131/131 co-relation queries the response was YES. [2021-12-16 02:52:57,360 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3674 conditions, 1931 events. 832/1931 cut-off events. For 131/131 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 11817 event pairs, 169 based on Foata normal form. 32/1930 useless extension candidates. Maximal degree in co-relation 968. Up to 499 conditions per place. [2021-12-16 02:52:57,368 INFO L132 encePairwiseOnDemand]: 165/186 looper letters, 100 selfloop transitions, 49 changer transitions 0/245 dead transitions. [2021-12-16 02:52:57,368 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 245 transitions, 862 flow [2021-12-16 02:52:57,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 02:52:57,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 02:52:57,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1540 transitions. [2021-12-16 02:52:57,372 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6368899917287014 [2021-12-16 02:52:57,372 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1540 transitions. [2021-12-16 02:52:57,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1540 transitions. [2021-12-16 02:52:57,373 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:57,373 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1540 transitions. [2021-12-16 02:52:57,377 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) [2021-12-16 02:52:57,380 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) [2021-12-16 02:52:57,381 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) [2021-12-16 02:52:57,381 INFO L186 Difference]: Start difference. First operand has 171 places, 160 transitions, 378 flow. Second operand 13 states and 1540 transitions. [2021-12-16 02:52:57,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 245 transitions, 862 flow [2021-12-16 02:52:57,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 245 transitions, 816 flow, removed 0 selfloop flow, removed 8 redundant places. [2021-12-16 02:52:57,388 INFO L242 Difference]: Finished difference. Result has 183 places, 197 transitions, 648 flow [2021-12-16 02:52:57,388 INFO L317 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} [2021-12-16 02:52:57,389 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 11 predicate places. [2021-12-16 02:52:57,389 INFO L470 AbstractCegarLoop]: Abstraction has has 183 places, 197 transitions, 648 flow [2021-12-16 02:52:57,390 INFO L471 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) [2021-12-16 02:52:57,390 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:57,390 INFO L254 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] [2021-12-16 02:52:57,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 02:52:57,391 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:52:57,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:57,391 INFO L85 PathProgramCache]: Analyzing trace with hash 896697388, now seen corresponding path program 1 times [2021-12-16 02:52:57,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:57,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144117024] [2021-12-16 02:52:57,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:57,392 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:57,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:57,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:57,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:57,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144117024] [2021-12-16 02:52:57,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144117024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:57,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:57,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 02:52:57,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377162181] [2021-12-16 02:52:57,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:57,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 02:52:57,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:57,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 02:52:57,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 02:52:57,489 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 186 [2021-12-16 02:52:57,490 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) [2021-12-16 02:52:57,490 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:57,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 186 [2021-12-16 02:52:57,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:58,013 INFO L129 PetriNetUnfolder]: 1085/2496 cut-off events. [2021-12-16 02:52:58,014 INFO L130 PetriNetUnfolder]: For 10877/10945 co-relation queries the response was YES. [2021-12-16 02:52:58,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8992 conditions, 2496 events. 1085/2496 cut-off events. For 10877/10945 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 16659 event pairs, 218 based on Foata normal form. 47/2510 useless extension candidates. Maximal degree in co-relation 7714. Up to 732 conditions per place. [2021-12-16 02:52:58,038 INFO L132 encePairwiseOnDemand]: 167/186 looper letters, 74 selfloop transitions, 48 changer transitions 69/286 dead transitions. [2021-12-16 02:52:58,039 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 286 transitions, 1732 flow [2021-12-16 02:52:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 02:52:58,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-16 02:52:58,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1307 transitions. [2021-12-16 02:52:58,044 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6388074291300098 [2021-12-16 02:52:58,044 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1307 transitions. [2021-12-16 02:52:58,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1307 transitions. [2021-12-16 02:52:58,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:58,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1307 transitions. [2021-12-16 02:52:58,048 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) [2021-12-16 02:52:58,051 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) [2021-12-16 02:52:58,051 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) [2021-12-16 02:52:58,052 INFO L186 Difference]: Start difference. First operand has 183 places, 197 transitions, 648 flow. Second operand 11 states and 1307 transitions. [2021-12-16 02:52:58,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 286 transitions, 1732 flow [2021-12-16 02:52:58,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 286 transitions, 1732 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-16 02:52:58,072 INFO L242 Difference]: Finished difference. Result has 201 places, 203 transitions, 961 flow [2021-12-16 02:52:58,073 INFO L317 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} [2021-12-16 02:52:58,074 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 29 predicate places. [2021-12-16 02:52:58,074 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 203 transitions, 961 flow [2021-12-16 02:52:58,075 INFO L471 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) [2021-12-16 02:52:58,075 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:58,075 INFO L254 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] [2021-12-16 02:52:58,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 02:52:58,076 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:52:58,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:58,077 INFO L85 PathProgramCache]: Analyzing trace with hash 1717393044, now seen corresponding path program 1 times [2021-12-16 02:52:58,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:58,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306672865] [2021-12-16 02:52:58,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:58,079 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:58,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:58,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:58,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:58,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306672865] [2021-12-16 02:52:58,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306672865] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:58,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:58,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 02:52:58,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60339399] [2021-12-16 02:52:58,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:58,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 02:52:58,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:58,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 02:52:58,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 02:52:58,170 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 186 [2021-12-16 02:52:58,171 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) [2021-12-16 02:52:58,172 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:58,172 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 186 [2021-12-16 02:52:58,172 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:52:58,285 INFO L129 PetriNetUnfolder]: 47/289 cut-off events. [2021-12-16 02:52:58,286 INFO L130 PetriNetUnfolder]: For 791/871 co-relation queries the response was YES. [2021-12-16 02:52:58,287 INFO L84 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 289 events. 47/289 cut-off events. For 791/871 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 972 event pairs, 11 based on Foata normal form. 0/277 useless extension candidates. Maximal degree in co-relation 633. Up to 31 conditions per place. [2021-12-16 02:52:58,289 INFO L132 encePairwiseOnDemand]: 181/186 looper letters, 19 selfloop transitions, 4 changer transitions 0/139 dead transitions. [2021-12-16 02:52:58,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 139 transitions, 456 flow [2021-12-16 02:52:58,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 02:52:58,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-16 02:52:58,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 966 transitions. [2021-12-16 02:52:58,292 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8655913978494624 [2021-12-16 02:52:58,292 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 966 transitions. [2021-12-16 02:52:58,292 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 966 transitions. [2021-12-16 02:52:58,293 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:52:58,293 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 966 transitions. [2021-12-16 02:52:58,295 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) [2021-12-16 02:52:58,297 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) [2021-12-16 02:52:58,298 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) [2021-12-16 02:52:58,298 INFO L186 Difference]: Start difference. First operand has 201 places, 203 transitions, 961 flow. Second operand 6 states and 966 transitions. [2021-12-16 02:52:58,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 139 transitions, 456 flow [2021-12-16 02:52:58,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 139 transitions, 336 flow, removed 40 selfloop flow, removed 19 redundant places. [2021-12-16 02:52:58,302 INFO L242 Difference]: Finished difference. Result has 144 places, 131 transitions, 282 flow [2021-12-16 02:52:58,302 INFO L317 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} [2021-12-16 02:52:58,303 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -28 predicate places. [2021-12-16 02:52:58,303 INFO L470 AbstractCegarLoop]: Abstraction has has 144 places, 131 transitions, 282 flow [2021-12-16 02:52:58,304 INFO L471 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) [2021-12-16 02:52:58,304 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:52:58,304 INFO L254 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] [2021-12-16 02:52:58,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 02:52:58,305 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:52:58,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:52:58,306 INFO L85 PathProgramCache]: Analyzing trace with hash -1971603667, now seen corresponding path program 1 times [2021-12-16 02:52:58,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:52:58,306 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983194667] [2021-12-16 02:52:58,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:52:58,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:52:58,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:52:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:52:59,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:52:59,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983194667] [2021-12-16 02:52:59,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [983194667] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:52:59,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:52:59,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-16 02:52:59,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595260034] [2021-12-16 02:52:59,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:52:59,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 02:52:59,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:52:59,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 02:52:59,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-16 02:52:59,066 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-12-16 02:52:59,067 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) [2021-12-16 02:52:59,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:52:59,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-12-16 02:52:59,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:00,432 INFO L129 PetriNetUnfolder]: 578/1337 cut-off events. [2021-12-16 02:53:00,432 INFO L130 PetriNetUnfolder]: For 184/184 co-relation queries the response was YES. [2021-12-16 02:53:00,435 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2718 conditions, 1337 events. 578/1337 cut-off events. For 184/184 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 6912 event pairs, 190 based on Foata normal form. 0/1290 useless extension candidates. Maximal degree in co-relation 2710. Up to 378 conditions per place. [2021-12-16 02:53:00,440 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 122 selfloop transitions, 27 changer transitions 0/212 dead transitions. [2021-12-16 02:53:00,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 212 transitions, 778 flow [2021-12-16 02:53:00,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 02:53:00,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-16 02:53:00,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1803 transitions. [2021-12-16 02:53:00,445 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5101867572156197 [2021-12-16 02:53:00,446 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1803 transitions. [2021-12-16 02:53:00,446 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1803 transitions. [2021-12-16 02:53:00,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:00,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1803 transitions. [2021-12-16 02:53:00,450 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) [2021-12-16 02:53:00,456 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) [2021-12-16 02:53:00,457 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) [2021-12-16 02:53:00,457 INFO L186 Difference]: Start difference. First operand has 144 places, 131 transitions, 282 flow. Second operand 19 states and 1803 transitions. [2021-12-16 02:53:00,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 212 transitions, 778 flow [2021-12-16 02:53:00,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 212 transitions, 771 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-16 02:53:00,462 INFO L242 Difference]: Finished difference. Result has 168 places, 147 transitions, 423 flow [2021-12-16 02:53:00,463 INFO L317 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} [2021-12-16 02:53:00,465 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, -4 predicate places. [2021-12-16 02:53:00,465 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 147 transitions, 423 flow [2021-12-16 02:53:00,466 INFO L471 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) [2021-12-16 02:53:00,466 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:00,467 INFO L254 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] [2021-12-16 02:53:00,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 02:53:00,467 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:00,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:00,468 INFO L85 PathProgramCache]: Analyzing trace with hash -649640311, now seen corresponding path program 2 times [2021-12-16 02:53:00,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:00,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683949465] [2021-12-16 02:53:00,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:00,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:00,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:00,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:00,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:00,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683949465] [2021-12-16 02:53:00,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683949465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:00,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:00,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-16 02:53:00,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360042510] [2021-12-16 02:53:00,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:00,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 02:53:00,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:00,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 02:53:00,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:53:00,898 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2021-12-16 02:53:00,899 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) [2021-12-16 02:53:00,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:00,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2021-12-16 02:53:00,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:01,682 INFO L129 PetriNetUnfolder]: 540/1472 cut-off events. [2021-12-16 02:53:01,683 INFO L130 PetriNetUnfolder]: For 674/700 co-relation queries the response was YES. [2021-12-16 02:53:01,687 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3349 conditions, 1472 events. 540/1472 cut-off events. For 674/700 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 9015 event pairs, 101 based on Foata normal form. 17/1456 useless extension candidates. Maximal degree in co-relation 3332. Up to 376 conditions per place. [2021-12-16 02:53:01,692 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 114 selfloop transitions, 42 changer transitions 0/222 dead transitions. [2021-12-16 02:53:01,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 222 transitions, 1022 flow [2021-12-16 02:53:01,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-16 02:53:01,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-12-16 02:53:01,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1642 transitions. [2021-12-16 02:53:01,697 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.519291587602783 [2021-12-16 02:53:01,697 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1642 transitions. [2021-12-16 02:53:01,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1642 transitions. [2021-12-16 02:53:01,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:01,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1642 transitions. [2021-12-16 02:53:01,702 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) [2021-12-16 02:53:01,706 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) [2021-12-16 02:53:01,707 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) [2021-12-16 02:53:01,707 INFO L186 Difference]: Start difference. First operand has 168 places, 147 transitions, 423 flow. Second operand 17 states and 1642 transitions. [2021-12-16 02:53:01,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 222 transitions, 1022 flow [2021-12-16 02:53:01,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 222 transitions, 1006 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-16 02:53:01,714 INFO L242 Difference]: Finished difference. Result has 186 places, 174 transitions, 725 flow [2021-12-16 02:53:01,714 INFO L317 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} [2021-12-16 02:53:01,715 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 14 predicate places. [2021-12-16 02:53:01,715 INFO L470 AbstractCegarLoop]: Abstraction has has 186 places, 174 transitions, 725 flow [2021-12-16 02:53:01,716 INFO L471 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) [2021-12-16 02:53:01,716 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:01,716 INFO L254 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] [2021-12-16 02:53:01,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 02:53:01,716 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:01,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1361320503, now seen corresponding path program 3 times [2021-12-16 02:53:01,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:01,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75900116] [2021-12-16 02:53:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:01,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:01,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:02,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:02,074 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:02,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75900116] [2021-12-16 02:53:02,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75900116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:02,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:02,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-16 02:53:02,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512876703] [2021-12-16 02:53:02,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:02,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 02:53:02,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:02,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 02:53:02,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:53:02,077 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2021-12-16 02:53:02,079 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 174 transitions, 725 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) [2021-12-16 02:53:02,079 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:02,079 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2021-12-16 02:53:02,079 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:03,115 INFO L129 PetriNetUnfolder]: 778/2236 cut-off events. [2021-12-16 02:53:03,116 INFO L130 PetriNetUnfolder]: For 2137/2162 co-relation queries the response was YES. [2021-12-16 02:53:03,125 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5834 conditions, 2236 events. 778/2236 cut-off events. For 2137/2162 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 16283 event pairs, 242 based on Foata normal form. 26/2206 useless extension candidates. Maximal degree in co-relation 5809. Up to 624 conditions per place. [2021-12-16 02:53:03,133 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 157 selfloop transitions, 45 changer transitions 0/268 dead transitions. [2021-12-16 02:53:03,134 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 268 transitions, 1625 flow [2021-12-16 02:53:03,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 02:53:03,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-16 02:53:03,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1837 transitions. [2021-12-16 02:53:03,139 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.519807583474816 [2021-12-16 02:53:03,139 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1837 transitions. [2021-12-16 02:53:03,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1837 transitions. [2021-12-16 02:53:03,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:03,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1837 transitions. [2021-12-16 02:53:03,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 96.6842105263158) internal successors, (1837), 19 states have internal predecessors, (1837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:53:03,148 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) [2021-12-16 02:53:03,149 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) [2021-12-16 02:53:03,149 INFO L186 Difference]: Start difference. First operand has 186 places, 174 transitions, 725 flow. Second operand 19 states and 1837 transitions. [2021-12-16 02:53:03,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 268 transitions, 1625 flow [2021-12-16 02:53:03,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 268 transitions, 1608 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-16 02:53:03,162 INFO L242 Difference]: Finished difference. Result has 207 places, 194 transitions, 1021 flow [2021-12-16 02:53:03,162 INFO L317 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=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1021, PETRI_PLACES=207, PETRI_TRANSITIONS=194} [2021-12-16 02:53:03,163 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 35 predicate places. [2021-12-16 02:53:03,163 INFO L470 AbstractCegarLoop]: Abstraction has has 207 places, 194 transitions, 1021 flow [2021-12-16 02:53:03,164 INFO L471 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) [2021-12-16 02:53:03,164 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:03,164 INFO L254 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] [2021-12-16 02:53:03,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 02:53:03,164 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:03,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:03,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1315149385, now seen corresponding path program 4 times [2021-12-16 02:53:03,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:03,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506407577] [2021-12-16 02:53:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:03,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:03,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:03,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:03,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506407577] [2021-12-16 02:53:03,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506407577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:03,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:03,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-16 02:53:03,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322527530] [2021-12-16 02:53:03,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:03,654 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 02:53:03,654 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:03,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 02:53:03,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:53:03,656 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2021-12-16 02:53:03,658 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 194 transitions, 1021 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) [2021-12-16 02:53:03,658 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:03,658 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2021-12-16 02:53:03,658 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:04,664 INFO L129 PetriNetUnfolder]: 781/2308 cut-off events. [2021-12-16 02:53:04,664 INFO L130 PetriNetUnfolder]: For 3726/3764 co-relation queries the response was YES. [2021-12-16 02:53:04,672 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6418 conditions, 2308 events. 781/2308 cut-off events. For 3726/3764 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 16758 event pairs, 407 based on Foata normal form. 35/2285 useless extension candidates. Maximal degree in co-relation 6383. Up to 896 conditions per place. [2021-12-16 02:53:04,681 INFO L132 encePairwiseOnDemand]: 164/186 looper letters, 144 selfloop transitions, 49 changer transitions 0/259 dead transitions. [2021-12-16 02:53:04,681 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 259 transitions, 1771 flow [2021-12-16 02:53:04,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 02:53:04,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-16 02:53:04,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1728 transitions. [2021-12-16 02:53:04,684 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2021-12-16 02:53:04,684 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1728 transitions. [2021-12-16 02:53:04,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1728 transitions. [2021-12-16 02:53:04,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:04,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1728 transitions. [2021-12-16 02:53:04,687 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 96.0) internal successors, (1728), 18 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:53:04,692 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:53:04,692 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 186.0) internal successors, (3534), 19 states have internal predecessors, (3534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:53:04,692 INFO L186 Difference]: Start difference. First operand has 207 places, 194 transitions, 1021 flow. Second operand 18 states and 1728 transitions. [2021-12-16 02:53:04,693 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 259 transitions, 1771 flow [2021-12-16 02:53:04,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 259 transitions, 1722 flow, removed 17 selfloop flow, removed 5 redundant places. [2021-12-16 02:53:04,712 INFO L242 Difference]: Finished difference. Result has 229 places, 207 transitions, 1256 flow [2021-12-16 02:53:04,713 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=977, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1256, PETRI_PLACES=229, PETRI_TRANSITIONS=207} [2021-12-16 02:53:04,714 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 57 predicate places. [2021-12-16 02:53:04,714 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 207 transitions, 1256 flow [2021-12-16 02:53:04,726 INFO L471 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) [2021-12-16 02:53:04,726 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:04,726 INFO L254 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] [2021-12-16 02:53:04,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 02:53:04,727 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:04,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:04,729 INFO L85 PathProgramCache]: Analyzing trace with hash -2134247871, now seen corresponding path program 5 times [2021-12-16 02:53:04,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:04,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100063057] [2021-12-16 02:53:04,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:04,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:05,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:05,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:05,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100063057] [2021-12-16 02:53:05,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100063057] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:05,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:05,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-16 02:53:05,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080843786] [2021-12-16 02:53:05,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:05,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 02:53:05,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:05,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 02:53:05,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:53:05,109 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2021-12-16 02:53:05,111 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 207 transitions, 1256 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) [2021-12-16 02:53:05,111 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:05,111 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2021-12-16 02:53:05,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:06,071 INFO L129 PetriNetUnfolder]: 784/2388 cut-off events. [2021-12-16 02:53:06,072 INFO L130 PetriNetUnfolder]: For 5606/5655 co-relation queries the response was YES. [2021-12-16 02:53:06,086 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7080 conditions, 2388 events. 784/2388 cut-off events. For 5606/5655 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 17597 event pairs, 156 based on Foata normal form. 35/2387 useless extension candidates. Maximal degree in co-relation 7034. Up to 520 conditions per place. [2021-12-16 02:53:06,096 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 158 selfloop transitions, 84 changer transitions 0/308 dead transitions. [2021-12-16 02:53:06,097 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 308 transitions, 2388 flow [2021-12-16 02:53:06,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 02:53:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-16 02:53:06,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1847 transitions. [2021-12-16 02:53:06,104 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5226372382569326 [2021-12-16 02:53:06,104 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1847 transitions. [2021-12-16 02:53:06,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1847 transitions. [2021-12-16 02:53:06,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:06,104 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1847 transitions. [2021-12-16 02:53:06,107 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) [2021-12-16 02:53:06,111 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) [2021-12-16 02:53:06,112 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) [2021-12-16 02:53:06,112 INFO L186 Difference]: Start difference. First operand has 229 places, 207 transitions, 1256 flow. Second operand 19 states and 1847 transitions. [2021-12-16 02:53:06,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 308 transitions, 2388 flow [2021-12-16 02:53:06,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 308 transitions, 2339 flow, removed 18 selfloop flow, removed 5 redundant places. [2021-12-16 02:53:06,143 INFO L242 Difference]: Finished difference. Result has 249 places, 236 transitions, 1837 flow [2021-12-16 02:53:06,144 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1837, PETRI_PLACES=249, PETRI_TRANSITIONS=236} [2021-12-16 02:53:06,146 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 77 predicate places. [2021-12-16 02:53:06,146 INFO L470 AbstractCegarLoop]: Abstraction has has 249 places, 236 transitions, 1837 flow [2021-12-16 02:53:06,146 INFO L471 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) [2021-12-16 02:53:06,147 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:06,147 INFO L254 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] [2021-12-16 02:53:06,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 02:53:06,147 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:06,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:06,148 INFO L85 PathProgramCache]: Analyzing trace with hash 390621125, now seen corresponding path program 6 times [2021-12-16 02:53:06,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:06,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860625919] [2021-12-16 02:53:06,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:06,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:06,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:06,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:06,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860625919] [2021-12-16 02:53:06,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860625919] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:06,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:06,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-16 02:53:06,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519821305] [2021-12-16 02:53:06,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:06,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 02:53:06,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:06,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 02:53:06,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-16 02:53:06,680 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-12-16 02:53:06,681 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 236 transitions, 1837 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) [2021-12-16 02:53:06,681 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:06,681 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-12-16 02:53:06,681 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:09,424 INFO L129 PetriNetUnfolder]: 1748/5017 cut-off events. [2021-12-16 02:53:09,424 INFO L130 PetriNetUnfolder]: For 16606/16618 co-relation queries the response was YES. [2021-12-16 02:53:09,448 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16327 conditions, 5017 events. 1748/5017 cut-off events. For 16606/16618 co-relation queries the response was YES. Maximal size of possible extension queue 253. Compared 44128 event pairs, 304 based on Foata normal form. 10/4909 useless extension candidates. Maximal degree in co-relation 16274. Up to 1065 conditions per place. [2021-12-16 02:53:09,464 INFO L132 encePairwiseOnDemand]: 157/186 looper letters, 296 selfloop transitions, 160 changer transitions 0/519 dead transitions. [2021-12-16 02:53:09,465 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 519 transitions, 5487 flow [2021-12-16 02:53:09,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-16 02:53:09,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-12-16 02:53:09,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 2656 transitions. [2021-12-16 02:53:09,470 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5099846390168971 [2021-12-16 02:53:09,470 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 2656 transitions. [2021-12-16 02:53:09,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 2656 transitions. [2021-12-16 02:53:09,471 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:09,471 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 2656 transitions. [2021-12-16 02:53:09,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 94.85714285714286) internal successors, (2656), 28 states have internal predecessors, (2656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:53:09,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:53:09,482 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 186.0) internal successors, (5394), 29 states have internal predecessors, (5394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:53:09,482 INFO L186 Difference]: Start difference. First operand has 249 places, 236 transitions, 1837 flow. Second operand 28 states and 2656 transitions. [2021-12-16 02:53:09,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 519 transitions, 5487 flow [2021-12-16 02:53:09,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 519 transitions, 5301 flow, removed 67 selfloop flow, removed 6 redundant places. [2021-12-16 02:53:09,565 INFO L242 Difference]: Finished difference. Result has 288 places, 360 transitions, 3983 flow [2021-12-16 02:53:09,566 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=3983, PETRI_PLACES=288, PETRI_TRANSITIONS=360} [2021-12-16 02:53:09,566 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 116 predicate places. [2021-12-16 02:53:09,567 INFO L470 AbstractCegarLoop]: Abstraction has has 288 places, 360 transitions, 3983 flow [2021-12-16 02:53:09,567 INFO L471 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) [2021-12-16 02:53:09,567 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:09,567 INFO L254 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] [2021-12-16 02:53:09,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 02:53:09,568 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:09,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:09,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1201812473, now seen corresponding path program 7 times [2021-12-16 02:53:09,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:09,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051859972] [2021-12-16 02:53:09,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:09,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:10,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:10,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:10,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051859972] [2021-12-16 02:53:10,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051859972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:10,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:10,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-16 02:53:10,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626953421] [2021-12-16 02:53:10,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:10,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-16 02:53:10,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:10,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-16 02:53:10,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2021-12-16 02:53:10,092 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-12-16 02:53:10,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 360 transitions, 3983 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) [2021-12-16 02:53:10,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:10,093 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-12-16 02:53:10,093 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:12,545 INFO L129 PetriNetUnfolder]: 2275/6555 cut-off events. [2021-12-16 02:53:12,546 INFO L130 PetriNetUnfolder]: For 31781/31796 co-relation queries the response was YES. [2021-12-16 02:53:12,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24269 conditions, 6555 events. 2275/6555 cut-off events. For 31781/31796 co-relation queries the response was YES. Maximal size of possible extension queue 336. Compared 60926 event pairs, 938 based on Foata normal form. 3/6414 useless extension candidates. Maximal degree in co-relation 24198. Up to 2382 conditions per place. [2021-12-16 02:53:12,597 INFO L132 encePairwiseOnDemand]: 159/186 looper letters, 317 selfloop transitions, 131 changer transitions 0/511 dead transitions. [2021-12-16 02:53:12,597 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 511 transitions, 6327 flow [2021-12-16 02:53:12,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 02:53:12,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-16 02:53:12,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1823 transitions. [2021-12-16 02:53:12,601 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5158460667798529 [2021-12-16 02:53:12,601 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1823 transitions. [2021-12-16 02:53:12,601 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1823 transitions. [2021-12-16 02:53:12,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:12,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1823 transitions. [2021-12-16 02:53:12,604 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) [2021-12-16 02:53:12,608 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) [2021-12-16 02:53:12,608 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) [2021-12-16 02:53:12,609 INFO L186 Difference]: Start difference. First operand has 288 places, 360 transitions, 3983 flow. Second operand 19 states and 1823 transitions. [2021-12-16 02:53:12,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 511 transitions, 6327 flow [2021-12-16 02:53:12,777 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 511 transitions, 6209 flow, removed 48 selfloop flow, removed 5 redundant places. [2021-12-16 02:53:12,785 INFO L242 Difference]: Finished difference. Result has 312 places, 406 transitions, 5076 flow [2021-12-16 02:53:12,786 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=3871, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=5076, PETRI_PLACES=312, PETRI_TRANSITIONS=406} [2021-12-16 02:53:12,787 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 140 predicate places. [2021-12-16 02:53:12,787 INFO L470 AbstractCegarLoop]: Abstraction has has 312 places, 406 transitions, 5076 flow [2021-12-16 02:53:12,787 INFO L471 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) [2021-12-16 02:53:12,788 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:12,788 INFO L254 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] [2021-12-16 02:53:12,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 02:53:12,788 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:12,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:12,788 INFO L85 PathProgramCache]: Analyzing trace with hash 825000589, now seen corresponding path program 8 times [2021-12-16 02:53:12,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:12,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197685346] [2021-12-16 02:53:12,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:12,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:13,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:13,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:13,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197685346] [2021-12-16 02:53:13,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197685346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:13,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:13,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-16 02:53:13,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162997520] [2021-12-16 02:53:13,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:13,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 02:53:13,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:13,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 02:53:13,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2021-12-16 02:53:13,337 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-12-16 02:53:13,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 406 transitions, 5076 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) [2021-12-16 02:53:13,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:13,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-12-16 02:53:13,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:15,893 INFO L129 PetriNetUnfolder]: 2702/8021 cut-off events. [2021-12-16 02:53:15,893 INFO L130 PetriNetUnfolder]: For 46941/46941 co-relation queries the response was YES. [2021-12-16 02:53:15,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30826 conditions, 8021 events. 2702/8021 cut-off events. For 46941/46941 co-relation queries the response was YES. Maximal size of possible extension queue 444. Compared 79967 event pairs, 954 based on Foata normal form. 1/7828 useless extension candidates. Maximal degree in co-relation 30744. Up to 2623 conditions per place. [2021-12-16 02:53:15,968 INFO L132 encePairwiseOnDemand]: 162/186 looper letters, 379 selfloop transitions, 165 changer transitions 0/607 dead transitions. [2021-12-16 02:53:15,968 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 607 transitions, 8699 flow [2021-12-16 02:53:15,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-16 02:53:15,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-12-16 02:53:15,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1989 transitions. [2021-12-16 02:53:15,972 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5092165898617511 [2021-12-16 02:53:15,972 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1989 transitions. [2021-12-16 02:53:15,972 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1989 transitions. [2021-12-16 02:53:15,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:15,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1989 transitions. [2021-12-16 02:53:15,975 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) [2021-12-16 02:53:15,979 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) [2021-12-16 02:53:15,980 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) [2021-12-16 02:53:15,980 INFO L186 Difference]: Start difference. First operand has 312 places, 406 transitions, 5076 flow. Second operand 21 states and 1989 transitions. [2021-12-16 02:53:15,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 607 transitions, 8699 flow [2021-12-16 02:53:16,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 607 transitions, 8519 flow, removed 78 selfloop flow, removed 5 redundant places. [2021-12-16 02:53:16,280 INFO L242 Difference]: Finished difference. Result has 338 places, 462 transitions, 6546 flow [2021-12-16 02:53:16,280 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=4945, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=6546, PETRI_PLACES=338, PETRI_TRANSITIONS=462} [2021-12-16 02:53:16,282 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 166 predicate places. [2021-12-16 02:53:16,282 INFO L470 AbstractCegarLoop]: Abstraction has has 338 places, 462 transitions, 6546 flow [2021-12-16 02:53:16,282 INFO L471 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) [2021-12-16 02:53:16,282 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:16,283 INFO L254 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] [2021-12-16 02:53:16,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 02:53:16,283 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:16,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1867107793, now seen corresponding path program 9 times [2021-12-16 02:53:16,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:16,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979892184] [2021-12-16 02:53:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:16,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:16,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:16,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:16,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979892184] [2021-12-16 02:53:16,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979892184] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:16,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:16,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-16 02:53:16,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117103898] [2021-12-16 02:53:16,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:16,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-16 02:53:16,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:16,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-16 02:53:16,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-16 02:53:16,756 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 186 [2021-12-16 02:53:16,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 462 transitions, 6546 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) [2021-12-16 02:53:16,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:16,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 186 [2021-12-16 02:53:16,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:19,057 INFO L129 PetriNetUnfolder]: 2628/8669 cut-off events. [2021-12-16 02:53:19,057 INFO L130 PetriNetUnfolder]: For 59687/59972 co-relation queries the response was YES. [2021-12-16 02:53:19,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 33471 conditions, 8669 events. 2628/8669 cut-off events. For 59687/59972 co-relation queries the response was YES. Maximal size of possible extension queue 493. Compared 91440 event pairs, 1101 based on Foata normal form. 225/8700 useless extension candidates. Maximal degree in co-relation 33378. Up to 2481 conditions per place. [2021-12-16 02:53:19,135 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 409 selfloop transitions, 196 changer transitions 0/685 dead transitions. [2021-12-16 02:53:19,135 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 685 transitions, 10922 flow [2021-12-16 02:53:19,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 02:53:19,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-16 02:53:19,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1836 transitions. [2021-12-16 02:53:19,138 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5195246179966044 [2021-12-16 02:53:19,138 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1836 transitions. [2021-12-16 02:53:19,139 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1836 transitions. [2021-12-16 02:53:19,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:19,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1836 transitions. [2021-12-16 02:53:19,142 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) [2021-12-16 02:53:19,145 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) [2021-12-16 02:53:19,146 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) [2021-12-16 02:53:19,146 INFO L186 Difference]: Start difference. First operand has 338 places, 462 transitions, 6546 flow. Second operand 19 states and 1836 transitions. [2021-12-16 02:53:19,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 685 transitions, 10922 flow [2021-12-16 02:53:19,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 685 transitions, 10820 flow, removed 39 selfloop flow, removed 6 redundant places. [2021-12-16 02:53:19,530 INFO L242 Difference]: Finished difference. Result has 360 places, 529 transitions, 8546 flow [2021-12-16 02:53:19,530 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=6452, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=462, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=296, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=8546, PETRI_PLACES=360, PETRI_TRANSITIONS=529} [2021-12-16 02:53:19,531 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 188 predicate places. [2021-12-16 02:53:19,531 INFO L470 AbstractCegarLoop]: Abstraction has has 360 places, 529 transitions, 8546 flow [2021-12-16 02:53:19,531 INFO L471 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) [2021-12-16 02:53:19,532 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:19,532 INFO L254 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] [2021-12-16 02:53:19,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 02:53:19,532 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:19,533 INFO L85 PathProgramCache]: Analyzing trace with hash 435060901, now seen corresponding path program 10 times [2021-12-16 02:53:19,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:19,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79486786] [2021-12-16 02:53:19,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:19,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:19,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:19,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:19,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79486786] [2021-12-16 02:53:19,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79486786] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:19,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:19,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-16 02:53:19,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257807340] [2021-12-16 02:53:19,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:19,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 02:53:19,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:20,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 02:53:20,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2021-12-16 02:53:20,062 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-12-16 02:53:20,063 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 529 transitions, 8546 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) [2021-12-16 02:53:20,063 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:20,063 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-12-16 02:53:20,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:23,567 INFO L129 PetriNetUnfolder]: 3430/10557 cut-off events. [2021-12-16 02:53:23,567 INFO L130 PetriNetUnfolder]: For 78330/78372 co-relation queries the response was YES. [2021-12-16 02:53:23,638 INFO L84 FinitePrefix]: Finished finitePrefix Result has 43811 conditions, 10557 events. 3430/10557 cut-off events. For 78330/78372 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 112948 event pairs, 1336 based on Foata normal form. 24/10357 useless extension candidates. Maximal degree in co-relation 43707. Up to 3159 conditions per place. [2021-12-16 02:53:23,666 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 419 selfloop transitions, 225 changer transitions 0/707 dead transitions. [2021-12-16 02:53:23,666 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 707 transitions, 12324 flow [2021-12-16 02:53:23,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 02:53:23,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-16 02:53:23,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1810 transitions. [2021-12-16 02:53:23,670 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5121675155631012 [2021-12-16 02:53:23,670 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1810 transitions. [2021-12-16 02:53:23,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1810 transitions. [2021-12-16 02:53:23,671 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:23,671 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1810 transitions. [2021-12-16 02:53:23,673 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) [2021-12-16 02:53:23,676 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) [2021-12-16 02:53:23,676 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) [2021-12-16 02:53:23,676 INFO L186 Difference]: Start difference. First operand has 360 places, 529 transitions, 8546 flow. Second operand 19 states and 1810 transitions. [2021-12-16 02:53:23,677 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 707 transitions, 12324 flow [2021-12-16 02:53:24,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 707 transitions, 12206 flow, removed 51 selfloop flow, removed 5 redundant places. [2021-12-16 02:53:24,141 INFO L242 Difference]: Finished difference. Result has 384 places, 590 transitions, 10492 flow [2021-12-16 02:53:24,141 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=8432, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=165, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=10492, PETRI_PLACES=384, PETRI_TRANSITIONS=590} [2021-12-16 02:53:24,142 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 212 predicate places. [2021-12-16 02:53:24,142 INFO L470 AbstractCegarLoop]: Abstraction has has 384 places, 590 transitions, 10492 flow [2021-12-16 02:53:24,142 INFO L471 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) [2021-12-16 02:53:24,142 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:24,142 INFO L254 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] [2021-12-16 02:53:24,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 02:53:24,143 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:24,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:24,143 INFO L85 PathProgramCache]: Analyzing trace with hash 447643473, now seen corresponding path program 11 times [2021-12-16 02:53:24,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:24,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703004638] [2021-12-16 02:53:24,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:24,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:24,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:24,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:24,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703004638] [2021-12-16 02:53:24,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703004638] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:24,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:24,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-16 02:53:24,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190808154] [2021-12-16 02:53:24,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:24,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 02:53:24,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:24,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 02:53:24,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-16 02:53:24,567 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-12-16 02:53:24,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 384 places, 590 transitions, 10492 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) [2021-12-16 02:53:24,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:24,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-12-16 02:53:24,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:28,169 INFO L129 PetriNetUnfolder]: 3428/10746 cut-off events. [2021-12-16 02:53:28,170 INFO L130 PetriNetUnfolder]: For 95598/95598 co-relation queries the response was YES. [2021-12-16 02:53:28,260 INFO L84 FinitePrefix]: Finished finitePrefix Result has 45855 conditions, 10746 events. 3428/10746 cut-off events. For 95598/95598 co-relation queries the response was YES. Maximal size of possible extension queue 577. Compared 114085 event pairs, 2007 based on Foata normal form. 1/10490 useless extension candidates. Maximal degree in co-relation 45740. Up to 4857 conditions per place. [2021-12-16 02:53:28,287 INFO L132 encePairwiseOnDemand]: 163/186 looper letters, 427 selfloop transitions, 228 changer transitions 0/718 dead transitions. [2021-12-16 02:53:28,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 718 transitions, 13385 flow [2021-12-16 02:53:28,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-16 02:53:28,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-16 02:53:28,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1886 transitions. [2021-12-16 02:53:28,290 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5069892473118279 [2021-12-16 02:53:28,290 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1886 transitions. [2021-12-16 02:53:28,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1886 transitions. [2021-12-16 02:53:28,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:28,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1886 transitions. [2021-12-16 02:53:28,294 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) [2021-12-16 02:53:28,297 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) [2021-12-16 02:53:28,297 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) [2021-12-16 02:53:28,298 INFO L186 Difference]: Start difference. First operand has 384 places, 590 transitions, 10492 flow. Second operand 20 states and 1886 transitions. [2021-12-16 02:53:28,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 718 transitions, 13385 flow [2021-12-16 02:53:28,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 718 transitions, 13154 flow, removed 106 selfloop flow, removed 5 redundant places. [2021-12-16 02:53:28,812 INFO L242 Difference]: Finished difference. Result has 409 places, 620 transitions, 11597 flow [2021-12-16 02:53:28,813 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=10288, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=590, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=11597, PETRI_PLACES=409, PETRI_TRANSITIONS=620} [2021-12-16 02:53:28,813 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 237 predicate places. [2021-12-16 02:53:28,813 INFO L470 AbstractCegarLoop]: Abstraction has has 409 places, 620 transitions, 11597 flow [2021-12-16 02:53:28,813 INFO L471 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) [2021-12-16 02:53:28,813 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:28,814 INFO L254 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] [2021-12-16 02:53:28,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 02:53:28,814 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:28,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:28,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1439148809, now seen corresponding path program 12 times [2021-12-16 02:53:28,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:28,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533285218] [2021-12-16 02:53:28,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:28,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:28,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:29,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:29,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533285218] [2021-12-16 02:53:29,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533285218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:29,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:29,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-16 02:53:29,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353064673] [2021-12-16 02:53:29,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:29,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 02:53:29,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:29,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 02:53:29,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2021-12-16 02:53:29,309 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-12-16 02:53:29,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 620 transitions, 11597 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) [2021-12-16 02:53:29,310 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:29,310 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-12-16 02:53:29,310 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:33,244 INFO L129 PetriNetUnfolder]: 3442/10714 cut-off events. [2021-12-16 02:53:33,245 INFO L130 PetriNetUnfolder]: For 101276/101324 co-relation queries the response was YES. [2021-12-16 02:53:33,339 INFO L84 FinitePrefix]: Finished finitePrefix Result has 46781 conditions, 10714 events. 3442/10714 cut-off events. For 101276/101324 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 115019 event pairs, 1373 based on Foata normal form. 18/10519 useless extension candidates. Maximal degree in co-relation 46654. Up to 3159 conditions per place. [2021-12-16 02:53:33,364 INFO L132 encePairwiseOnDemand]: 160/186 looper letters, 491 selfloop transitions, 237 changer transitions 0/791 dead transitions. [2021-12-16 02:53:33,364 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 791 transitions, 15371 flow [2021-12-16 02:53:33,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-16 02:53:33,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-16 02:53:33,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1823 transitions. [2021-12-16 02:53:33,368 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5158460667798529 [2021-12-16 02:53:33,368 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 1823 transitions. [2021-12-16 02:53:33,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 1823 transitions. [2021-12-16 02:53:33,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:33,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 1823 transitions. [2021-12-16 02:53:33,371 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) [2021-12-16 02:53:33,374 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) [2021-12-16 02:53:33,375 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) [2021-12-16 02:53:33,375 INFO L186 Difference]: Start difference. First operand has 409 places, 620 transitions, 11597 flow. Second operand 19 states and 1823 transitions. [2021-12-16 02:53:33,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 791 transitions, 15371 flow [2021-12-16 02:53:34,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 791 transitions, 15194 flow, removed 79 selfloop flow, removed 6 redundant places. [2021-12-16 02:53:34,023 INFO L242 Difference]: Finished difference. Result has 431 places, 659 transitions, 13102 flow [2021-12-16 02:53:34,023 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=11424, PETRI_DIFFERENCE_MINUEND_PLACES=403, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=13102, PETRI_PLACES=431, PETRI_TRANSITIONS=659} [2021-12-16 02:53:34,023 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 259 predicate places. [2021-12-16 02:53:34,023 INFO L470 AbstractCegarLoop]: Abstraction has has 431 places, 659 transitions, 13102 flow [2021-12-16 02:53:34,024 INFO L471 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) [2021-12-16 02:53:34,024 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:34,024 INFO L254 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] [2021-12-16 02:53:34,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 02:53:34,024 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:34,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:34,025 INFO L85 PathProgramCache]: Analyzing trace with hash 752233023, now seen corresponding path program 13 times [2021-12-16 02:53:34,025 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:34,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491050516] [2021-12-16 02:53:34,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:34,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:34,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:34,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:34,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491050516] [2021-12-16 02:53:34,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491050516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:34,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:34,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-16 02:53:34,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192927358] [2021-12-16 02:53:34,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:34,571 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 02:53:34,571 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:34,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 02:53:34,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2021-12-16 02:53:34,573 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-12-16 02:53:34,574 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 431 places, 659 transitions, 13102 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) [2021-12-16 02:53:34,574 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:34,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-12-16 02:53:34,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:39,425 INFO L129 PetriNetUnfolder]: 3441/10682 cut-off events. [2021-12-16 02:53:39,425 INFO L130 PetriNetUnfolder]: For 118960/119031 co-relation queries the response was YES. [2021-12-16 02:53:39,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 48397 conditions, 10682 events. 3441/10682 cut-off events. For 118960/119031 co-relation queries the response was YES. Maximal size of possible extension queue 618. Compared 114799 event pairs, 609 based on Foata normal form. 32/10464 useless extension candidates. Maximal degree in co-relation 48262. Up to 2417 conditions per place. [2021-12-16 02:53:39,563 INFO L132 encePairwiseOnDemand]: 157/186 looper letters, 468 selfloop transitions, 332 changer transitions 0/863 dead transitions. [2021-12-16 02:53:39,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 863 transitions, 17244 flow [2021-12-16 02:53:39,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-16 02:53:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-12-16 02:53:39,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2750 transitions. [2021-12-16 02:53:39,567 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5098257322951427 [2021-12-16 02:53:39,567 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 2750 transitions. [2021-12-16 02:53:39,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 2750 transitions. [2021-12-16 02:53:39,568 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:39,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 2750 transitions. [2021-12-16 02:53:39,571 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 94.82758620689656) internal successors, (2750), 29 states have internal predecessors, (2750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:53:39,578 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) [2021-12-16 02:53:39,578 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) [2021-12-16 02:53:39,579 INFO L186 Difference]: Start difference. First operand has 431 places, 659 transitions, 13102 flow. Second operand 29 states and 2750 transitions. [2021-12-16 02:53:39,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 863 transitions, 17244 flow [2021-12-16 02:53:40,244 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 863 transitions, 16913 flow, removed 156 selfloop flow, removed 5 redundant places. [2021-12-16 02:53:40,259 INFO L242 Difference]: Finished difference. Result has 463 places, 681 transitions, 14367 flow [2021-12-16 02:53:40,260 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=12833, PETRI_DIFFERENCE_MINUEND_PLACES=426, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=310, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=14367, PETRI_PLACES=463, PETRI_TRANSITIONS=681} [2021-12-16 02:53:40,261 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 291 predicate places. [2021-12-16 02:53:40,261 INFO L470 AbstractCegarLoop]: Abstraction has has 463 places, 681 transitions, 14367 flow [2021-12-16 02:53:40,261 INFO L471 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) [2021-12-16 02:53:40,261 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:40,261 INFO L254 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] [2021-12-16 02:53:40,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 02:53:40,262 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:40,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:40,262 INFO L85 PathProgramCache]: Analyzing trace with hash 326738003, now seen corresponding path program 14 times [2021-12-16 02:53:40,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:40,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187386066] [2021-12-16 02:53:40,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:40,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:40,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:40,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:40,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187386066] [2021-12-16 02:53:40,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187386066] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:40,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:40,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-16 02:53:40,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150246105] [2021-12-16 02:53:40,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:40,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-16 02:53:40,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:40,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-16 02:53:40,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-12-16 02:53:40,771 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-12-16 02:53:40,772 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 681 transitions, 14367 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) [2021-12-16 02:53:40,772 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:40,772 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-12-16 02:53:40,772 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 02:53:45,274 INFO L129 PetriNetUnfolder]: 3439/10871 cut-off events. [2021-12-16 02:53:45,275 INFO L130 PetriNetUnfolder]: For 130979/131092 co-relation queries the response was YES. [2021-12-16 02:53:45,394 INFO L84 FinitePrefix]: Finished finitePrefix Result has 50354 conditions, 10871 events. 3439/10871 cut-off events. For 130979/131092 co-relation queries the response was YES. Maximal size of possible extension queue 606. Compared 116860 event pairs, 1426 based on Foata normal form. 44/10682 useless extension candidates. Maximal degree in co-relation 50210. Up to 5295 conditions per place. [2021-12-16 02:53:45,424 INFO L132 encePairwiseOnDemand]: 161/186 looper letters, 481 selfloop transitions, 260 changer transitions 0/804 dead transitions. [2021-12-16 02:53:45,425 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 804 transitions, 17399 flow [2021-12-16 02:53:45,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-16 02:53:45,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-12-16 02:53:45,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2343 transitions. [2021-12-16 02:53:45,428 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5038709677419355 [2021-12-16 02:53:45,428 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2343 transitions. [2021-12-16 02:53:45,428 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2343 transitions. [2021-12-16 02:53:45,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 02:53:45,429 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2343 transitions. [2021-12-16 02:53:45,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 93.72) internal successors, (2343), 25 states have internal predecessors, (2343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:53:45,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:53:45,436 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 186.0) internal successors, (4836), 26 states have internal predecessors, (4836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 02:53:45,436 INFO L186 Difference]: Start difference. First operand has 463 places, 681 transitions, 14367 flow. Second operand 25 states and 2343 transitions. [2021-12-16 02:53:45,436 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 804 transitions, 17399 flow [2021-12-16 02:53:46,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 804 transitions, 17114 flow, removed 45 selfloop flow, removed 12 redundant places. [2021-12-16 02:53:46,275 INFO L242 Difference]: Finished difference. Result has 484 places, 707 transitions, 15501 flow [2021-12-16 02:53:46,276 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=186, PETRI_DIFFERENCE_MINUEND_FLOW=14084, PETRI_DIFFERENCE_MINUEND_PLACES=451, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=681, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=234, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=15501, PETRI_PLACES=484, PETRI_TRANSITIONS=707} [2021-12-16 02:53:46,276 INFO L334 CegarLoopForPetriNet]: 172 programPoint places, 312 predicate places. [2021-12-16 02:53:46,276 INFO L470 AbstractCegarLoop]: Abstraction has has 484 places, 707 transitions, 15501 flow [2021-12-16 02:53:46,277 INFO L471 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) [2021-12-16 02:53:46,277 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 02:53:46,277 INFO L254 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] [2021-12-16 02:53:46,277 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 02:53:46,278 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-12-16 02:53:46,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 02:53:46,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1182121243, now seen corresponding path program 15 times [2021-12-16 02:53:46,278 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 02:53:46,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403132644] [2021-12-16 02:53:46,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 02:53:46,279 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 02:53:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 02:53:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 02:53:46,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 02:53:46,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403132644] [2021-12-16 02:53:46,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403132644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 02:53:46,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 02:53:46,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-16 02:53:46,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753272559] [2021-12-16 02:53:46,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 02:53:46,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-16 02:53:46,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 02:53:46,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-16 02:53:46,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-12-16 02:53:46,782 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 87 out of 186 [2021-12-16 02:53:46,783 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 707 transitions, 15501 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) [2021-12-16 02:53:46,783 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 02:53:46,783 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 87 of 186 [2021-12-16 02:53:46,783 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand