./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/pthread-divine/divinefifo-bug_1w1r.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 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 08:47:38,213 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 08:47:38,216 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 08:47:38,242 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 08:47:38,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 08:47:38,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 08:47:38,245 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 08:47:38,247 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 08:47:38,248 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 08:47:38,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 08:47:38,250 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 08:47:38,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 08:47:38,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 08:47:38,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 08:47:38,253 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 08:47:38,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 08:47:38,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 08:47:38,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 08:47:38,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 08:47:38,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 08:47:38,260 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 08:47:38,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 08:47:38,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 08:47:38,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 08:47:38,263 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 08:47:38,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 08:47:38,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 08:47:38,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 08:47:38,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 08:47:38,267 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 08:47:38,268 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 08:47:38,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 08:47:38,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 08:47:38,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 08:47:38,271 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 08:47:38,272 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 08:47:38,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 08:47:38,273 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 08:47:38,273 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 08:47:38,273 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 08:47:38,274 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 08:47:38,275 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 08:47:38,276 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 08:47:38,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 08:47:38,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 08:47:38,306 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 08:47:38,306 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 08:47:38,307 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 08:47:38,307 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 08:47:38,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 08:47:38,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 08:47:38,308 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 08:47:38,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 08:47:38,309 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 08:47:38,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 08:47:38,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 08:47:38,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 08:47:38,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 08:47:38,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 08:47:38,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 08:47:38,311 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 08:47:38,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 08:47:38,311 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 08:47:38,312 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 08:47:38,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 08:47:38,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 08:47:38,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 08:47:38,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:47:38,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 08:47:38,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 08:47:38,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 08:47:38,314 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 08:47:38,314 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 08:47:38,314 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 08:47:38,314 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 08:47:38,315 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 08:47:38,315 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 32482febe38d61a93fd0705f3ad97c9c1ccc991b1238f75e4d1dd99bfb01c35e [2022-07-21 08:47:38,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 08:47:38,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 08:47:38,665 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 08:47:38,666 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 08:47:38,667 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 08:47:38,669 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2022-07-21 08:47:38,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf78cc1a/50c71d50940e4f19821eb02fd28dc4c2/FLAG2b9f5933d [2022-07-21 08:47:39,294 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 08:47:39,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-divine/divinefifo-bug_1w1r.i [2022-07-21 08:47:39,312 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf78cc1a/50c71d50940e4f19821eb02fd28dc4c2/FLAG2b9f5933d [2022-07-21 08:47:39,581 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7cf78cc1a/50c71d50940e4f19821eb02fd28dc4c2 [2022-07-21 08:47:39,584 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 08:47:39,585 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 08:47:39,586 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 08:47:39,586 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 08:47:39,589 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 08:47:39,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:47:39" (1/1) ... [2022-07-21 08:47:39,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45fa9193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:39, skipping insertion in model container [2022-07-21 08:47:39,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:47:39" (1/1) ... [2022-07-21 08:47:39,596 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 08:47:39,631 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 08:47:39,739 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:47:40,046 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/pthread-divine/divinefifo-bug_1w1r.i[47275,47288] [2022-07-21 08:47:40,052 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/pthread-divine/divinefifo-bug_1w1r.i[47463,47476] [2022-07-21 08:47:40,072 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/pthread-divine/divinefifo-bug_1w1r.i[48230,48243] [2022-07-21 08:47:40,073 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/pthread-divine/divinefifo-bug_1w1r.i[48344,48357] [2022-07-21 08:47:40,083 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/pthread-divine/divinefifo-bug_1w1r.i[48816,48829] [2022-07-21 08:47:40,084 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/pthread-divine/divinefifo-bug_1w1r.i[48872,48885] [2022-07-21 08:47:40,096 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/pthread-divine/divinefifo-bug_1w1r.i[49384,49397] [2022-07-21 08:47:40,098 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/pthread-divine/divinefifo-bug_1w1r.i[49443,49456] [2022-07-21 08:47:40,099 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/pthread-divine/divinefifo-bug_1w1r.i[49522,49535] [2022-07-21 08:47:40,100 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:47:40,108 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 08:47:40,124 WARN L611 FunctionHandler]: implicit declaration of function __builtin_bswap16 [2022-07-21 08:47:40,154 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/pthread-divine/divinefifo-bug_1w1r.i[47275,47288] [2022-07-21 08:47:40,159 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/pthread-divine/divinefifo-bug_1w1r.i[47463,47476] [2022-07-21 08:47:40,166 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/pthread-divine/divinefifo-bug_1w1r.i[48230,48243] [2022-07-21 08:47:40,168 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/pthread-divine/divinefifo-bug_1w1r.i[48344,48357] [2022-07-21 08:47:40,176 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/pthread-divine/divinefifo-bug_1w1r.i[48816,48829] [2022-07-21 08:47:40,177 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/pthread-divine/divinefifo-bug_1w1r.i[48872,48885] [2022-07-21 08:47:40,181 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/pthread-divine/divinefifo-bug_1w1r.i[49384,49397] [2022-07-21 08:47:40,183 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/pthread-divine/divinefifo-bug_1w1r.i[49443,49456] [2022-07-21 08:47:40,185 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/pthread-divine/divinefifo-bug_1w1r.i[49522,49535] [2022-07-21 08:47:40,186 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 08:47:40,250 INFO L208 MainTranslator]: Completed translation [2022-07-21 08:47:40,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40 WrapperNode [2022-07-21 08:47:40,250 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 08:47:40,251 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 08:47:40,252 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 08:47:40,252 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 08:47:40,258 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,293 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,327 INFO L137 Inliner]: procedures = 278, calls = 103, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 416 [2022-07-21 08:47:40,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 08:47:40,328 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 08:47:40,328 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 08:47:40,328 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 08:47:40,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,342 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,342 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,358 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,369 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 08:47:40,370 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 08:47:40,370 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 08:47:40,370 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 08:47:40,371 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (1/1) ... [2022-07-21 08:47:40,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 08:47:40,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 08:47:40,397 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 08:47:40,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 08:47:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure pusher [2022-07-21 08:47:40,440 INFO L138 BoogieDeclarations]: Found implementation of procedure pusher [2022-07-21 08:47:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 08:47:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 08:47:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 08:47:40,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 08:47:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 08:47:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 08:47:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 08:47:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 08:47:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 08:47:40,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 08:47:40,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 08:47:40,443 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-21 08:47:40,642 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 08:47:40,643 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 08:47:41,298 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 08:47:41,307 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 08:47:41,307 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-21 08:47:41,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:47:41 BoogieIcfgContainer [2022-07-21 08:47:41,309 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 08:47:41,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 08:47:41,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 08:47:41,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 08:47:41,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:47:39" (1/3) ... [2022-07-21 08:47:41,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232fbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:47:41, skipping insertion in model container [2022-07-21 08:47:41,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:47:40" (2/3) ... [2022-07-21 08:47:41,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@232fbc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:47:41, skipping insertion in model container [2022-07-21 08:47:41,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:47:41" (3/3) ... [2022-07-21 08:47:41,315 INFO L111 eAbstractionObserver]: Analyzing ICFG divinefifo-bug_1w1r.i [2022-07-21 08:47:41,320 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-21 08:47:41,327 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 08:47:41,328 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2022-07-21 08:47:41,328 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-21 08:47:41,401 INFO L135 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2022-07-21 08:47:41,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 478 places, 507 transitions, 1022 flow [2022-07-21 08:47:41,610 INFO L129 PetriNetUnfolder]: 33/506 cut-off events. [2022-07-21 08:47:41,610 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2022-07-21 08:47:41,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 511 conditions, 506 events. 33/506 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 1167 event pairs, 0 based on Foata normal form. 0/462 useless extension candidates. Maximal degree in co-relation 352. Up to 3 conditions per place. [2022-07-21 08:47:41,620 INFO L82 GeneralOperation]: Start removeDead. Operand has 478 places, 507 transitions, 1022 flow [2022-07-21 08:47:41,630 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 459 places, 487 transitions, 980 flow [2022-07-21 08:47:41,640 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 08:47:41,645 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@343fcf9f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@515c5311 [2022-07-21 08:47:41,645 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-07-21 08:47:41,657 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2022-07-21 08:47:41,658 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-07-21 08:47:41,658 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:41,658 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:41,659 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 08:47:41,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:41,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1954338316, now seen corresponding path program 1 times [2022-07-21 08:47:41,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:41,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335688872] [2022-07-21 08:47:41,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:41,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:41,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:42,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:42,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:42,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335688872] [2022-07-21 08:47:42,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335688872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:42,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:42,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-21 08:47:42,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123562411] [2022-07-21 08:47:42,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:42,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-21 08:47:42,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:42,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-21 08:47:42,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-21 08:47:42,225 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 314 out of 507 [2022-07-21 08:47:42,245 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 487 transitions, 980 flow. Second operand has 12 states, 12 states have (on average 315.9166666666667) internal successors, (3791), 12 states have internal predecessors, (3791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:42,246 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:42,246 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 314 of 507 [2022-07-21 08:47:42,247 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:44,245 INFO L129 PetriNetUnfolder]: 1991/7285 cut-off events. [2022-07-21 08:47:44,246 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-07-21 08:47:44,262 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10818 conditions, 7285 events. 1991/7285 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 61791 event pairs, 1183 based on Foata normal form. 432/7200 useless extension candidates. Maximal degree in co-relation 10622. Up to 2824 conditions per place. [2022-07-21 08:47:44,291 INFO L132 encePairwiseOnDemand]: 468/507 looper letters, 166 selfloop transitions, 24 changer transitions 0/487 dead transitions. [2022-07-21 08:47:44,291 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 487 transitions, 1360 flow [2022-07-21 08:47:44,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 08:47:44,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-21 08:47:44,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 4602 transitions. [2022-07-21 08:47:44,316 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6483516483516484 [2022-07-21 08:47:44,316 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 4602 transitions. [2022-07-21 08:47:44,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 4602 transitions. [2022-07-21 08:47:44,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:44,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 4602 transitions. [2022-07-21 08:47:44,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 328.7142857142857) internal successors, (4602), 14 states have internal predecessors, (4602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:44,355 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 507.0) internal successors, (7605), 15 states have internal predecessors, (7605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:44,360 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 507.0) internal successors, (7605), 15 states have internal predecessors, (7605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:44,362 INFO L186 Difference]: Start difference. First operand has 459 places, 487 transitions, 980 flow. Second operand 14 states and 4602 transitions. [2022-07-21 08:47:44,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 487 transitions, 1360 flow [2022-07-21 08:47:44,369 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 487 transitions, 1356 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-21 08:47:44,378 INFO L242 Difference]: Finished difference. Result has 470 places, 472 transitions, 994 flow [2022-07-21 08:47:44,380 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=946, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=472, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=448, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=994, PETRI_PLACES=470, PETRI_TRANSITIONS=472} [2022-07-21 08:47:44,383 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 11 predicate places. [2022-07-21 08:47:44,384 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 472 transitions, 994 flow [2022-07-21 08:47:44,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 315.9166666666667) internal successors, (3791), 12 states have internal predecessors, (3791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:44,387 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:44,387 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:44,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 08:47:44,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 08:47:44,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1408163568, now seen corresponding path program 1 times [2022-07-21 08:47:44,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:44,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361116009] [2022-07-21 08:47:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:44,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:44,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:45,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:45,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:45,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361116009] [2022-07-21 08:47:45,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361116009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:45,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:45,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-21 08:47:45,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144861953] [2022-07-21 08:47:45,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:45,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 08:47:45,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:45,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 08:47:45,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=419, Unknown=0, NotChecked=0, Total=462 [2022-07-21 08:47:45,094 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 268 out of 507 [2022-07-21 08:47:45,101 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 472 transitions, 994 flow. Second operand has 22 states, 22 states have (on average 269.95454545454544) internal successors, (5939), 22 states have internal predecessors, (5939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:45,101 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:45,101 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 268 of 507 [2022-07-21 08:47:45,102 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:50,083 INFO L129 PetriNetUnfolder]: 4756/14876 cut-off events. [2022-07-21 08:47:50,084 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-21 08:47:50,109 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23924 conditions, 14876 events. 4756/14876 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 134271 event pairs, 168 based on Foata normal form. 0/14155 useless extension candidates. Maximal degree in co-relation 20413. Up to 3612 conditions per place. [2022-07-21 08:47:50,166 INFO L132 encePairwiseOnDemand]: 462/507 looper letters, 387 selfloop transitions, 54 changer transitions 0/694 dead transitions. [2022-07-21 08:47:50,166 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 694 transitions, 2341 flow [2022-07-21 08:47:50,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-21 08:47:50,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2022-07-21 08:47:50,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 9018 transitions. [2022-07-21 08:47:50,187 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5558431952662722 [2022-07-21 08:47:50,188 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 9018 transitions. [2022-07-21 08:47:50,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 9018 transitions. [2022-07-21 08:47:50,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:50,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 9018 transitions. [2022-07-21 08:47:50,210 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 281.8125) internal successors, (9018), 32 states have internal predecessors, (9018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 507.0) internal successors, (16731), 33 states have internal predecessors, (16731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,322 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 507.0) internal successors, (16731), 33 states have internal predecessors, (16731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,322 INFO L186 Difference]: Start difference. First operand has 470 places, 472 transitions, 994 flow. Second operand 32 states and 9018 transitions. [2022-07-21 08:47:50,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 694 transitions, 2341 flow [2022-07-21 08:47:50,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 486 places, 694 transitions, 2273 flow, removed 0 selfloop flow, removed 13 redundant places. [2022-07-21 08:47:50,346 INFO L242 Difference]: Finished difference. Result has 488 places, 487 transitions, 1119 flow [2022-07-21 08:47:50,347 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=470, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=426, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=1119, PETRI_PLACES=488, PETRI_TRANSITIONS=487} [2022-07-21 08:47:50,348 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 29 predicate places. [2022-07-21 08:47:50,348 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 487 transitions, 1119 flow [2022-07-21 08:47:50,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 269.95454545454544) internal successors, (5939), 22 states have internal predecessors, (5939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,362 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:50,362 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:50,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 08:47:50,363 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 08:47:50,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1612565280, now seen corresponding path program 1 times [2022-07-21 08:47:50,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:50,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12783706] [2022-07-21 08:47:50,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:50,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:50,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:50,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:50,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:50,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12783706] [2022-07-21 08:47:50,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12783706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:50,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:50,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:47:50,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666206656] [2022-07-21 08:47:50,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:50,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:47:50,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:47:50,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:47:50,478 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 479 out of 507 [2022-07-21 08:47:50,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 487 transitions, 1119 flow. Second operand has 5 states, 5 states have (on average 480.6) internal successors, (2403), 5 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:50,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 479 of 507 [2022-07-21 08:47:50,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:50,615 INFO L129 PetriNetUnfolder]: 31/902 cut-off events. [2022-07-21 08:47:50,616 INFO L130 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-07-21 08:47:50,623 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1020 conditions, 902 events. 31/902 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 2294 event pairs, 0 based on Foata normal form. 0/860 useless extension candidates. Maximal degree in co-relation 658. Up to 18 conditions per place. [2022-07-21 08:47:50,626 INFO L132 encePairwiseOnDemand]: 499/507 looper letters, 8 selfloop transitions, 7 changer transitions 0/488 dead transitions. [2022-07-21 08:47:50,626 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 488 transitions, 1148 flow [2022-07-21 08:47:50,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 08:47:50,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-07-21 08:47:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2411 transitions. [2022-07-21 08:47:50,631 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9510848126232742 [2022-07-21 08:47:50,631 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2411 transitions. [2022-07-21 08:47:50,631 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2411 transitions. [2022-07-21 08:47:50,633 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:50,633 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2411 transitions. [2022-07-21 08:47:50,637 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 482.2) internal successors, (2411), 5 states have internal predecessors, (2411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,640 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,641 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 507.0) internal successors, (3042), 6 states have internal predecessors, (3042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,641 INFO L186 Difference]: Start difference. First operand has 488 places, 487 transitions, 1119 flow. Second operand 5 states and 2411 transitions. [2022-07-21 08:47:50,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 488 transitions, 1148 flow [2022-07-21 08:47:50,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 488 transitions, 1093 flow, removed 1 selfloop flow, removed 26 redundant places. [2022-07-21 08:47:50,651 INFO L242 Difference]: Finished difference. Result has 468 places, 487 transitions, 1085 flow [2022-07-21 08:47:50,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=1056, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=485, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=478, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1085, PETRI_PLACES=468, PETRI_TRANSITIONS=487} [2022-07-21 08:47:50,652 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 9 predicate places. [2022-07-21 08:47:50,653 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 487 transitions, 1085 flow [2022-07-21 08:47:50,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 480.6) internal successors, (2403), 5 states have internal predecessors, (2403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,654 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:50,654 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:50,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 08:47:50,654 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 08:47:50,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:50,655 INFO L85 PathProgramCache]: Analyzing trace with hash 519425822, now seen corresponding path program 1 times [2022-07-21 08:47:50,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:50,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001868267] [2022-07-21 08:47:50,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:50,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:50,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:50,703 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:50,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:50,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001868267] [2022-07-21 08:47:50,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001868267] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:50,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:50,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 08:47:50,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730052629] [2022-07-21 08:47:50,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:50,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 08:47:50,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:50,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 08:47:50,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 08:47:50,708 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 482 out of 507 [2022-07-21 08:47:50,709 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 487 transitions, 1085 flow. Second operand has 3 states, 3 states have (on average 483.3333333333333) internal successors, (1450), 3 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,709 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:50,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 482 of 507 [2022-07-21 08:47:50,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:50,934 INFO L129 PetriNetUnfolder]: 42/1173 cut-off events. [2022-07-21 08:47:50,935 INFO L130 PetriNetUnfolder]: For 20/20 co-relation queries the response was YES. [2022-07-21 08:47:50,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1302 conditions, 1173 events. 42/1173 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 3310 event pairs, 1 based on Foata normal form. 0/1118 useless extension candidates. Maximal degree in co-relation 1039. Up to 22 conditions per place. [2022-07-21 08:47:50,949 INFO L132 encePairwiseOnDemand]: 504/507 looper letters, 13 selfloop transitions, 2 changer transitions 0/491 dead transitions. [2022-07-21 08:47:50,949 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 491 transitions, 1119 flow [2022-07-21 08:47:50,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 08:47:50,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-21 08:47:50,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1462 transitions. [2022-07-21 08:47:50,956 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9612097304404996 [2022-07-21 08:47:50,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1462 transitions. [2022-07-21 08:47:50,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1462 transitions. [2022-07-21 08:47:50,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:50,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1462 transitions. [2022-07-21 08:47:50,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 487.3333333333333) internal successors, (1462), 3 states have internal predecessors, (1462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,962 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,963 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 507.0) internal successors, (2028), 4 states have internal predecessors, (2028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,963 INFO L186 Difference]: Start difference. First operand has 468 places, 487 transitions, 1085 flow. Second operand 3 states and 1462 transitions. [2022-07-21 08:47:50,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 491 transitions, 1119 flow [2022-07-21 08:47:50,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 491 transitions, 1110 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-07-21 08:47:50,973 INFO L242 Difference]: Finished difference. Result has 469 places, 487 transitions, 1082 flow [2022-07-21 08:47:50,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=484, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1082, PETRI_PLACES=469, PETRI_TRANSITIONS=487} [2022-07-21 08:47:50,974 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 10 predicate places. [2022-07-21 08:47:50,975 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 487 transitions, 1082 flow [2022-07-21 08:47:50,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 483.3333333333333) internal successors, (1450), 3 states have internal predecessors, (1450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:50,975 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:50,975 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:50,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 08:47:50,976 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 08:47:50,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:50,976 INFO L85 PathProgramCache]: Analyzing trace with hash 2048381946, now seen corresponding path program 1 times [2022-07-21 08:47:50,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:50,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179542470] [2022-07-21 08:47:50,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:50,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:51,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:51,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:51,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179542470] [2022-07-21 08:47:51,338 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179542470] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:51,338 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:51,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-21 08:47:51,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809329919] [2022-07-21 08:47:51,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:51,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-21 08:47:51,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:51,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-21 08:47:51,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=286, Unknown=0, NotChecked=0, Total=342 [2022-07-21 08:47:51,345 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 507 [2022-07-21 08:47:51,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 487 transitions, 1082 flow. Second operand has 19 states, 19 states have (on average 337.36842105263156) internal successors, (6410), 19 states have internal predecessors, (6410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:51,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:51,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 507 [2022-07-21 08:47:51,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:55,917 INFO L129 PetriNetUnfolder]: 6024/22966 cut-off events. [2022-07-21 08:47:55,917 INFO L130 PetriNetUnfolder]: For 413/413 co-relation queries the response was YES. [2022-07-21 08:47:55,962 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34725 conditions, 22966 events. 6024/22966 cut-off events. For 413/413 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 219912 event pairs, 1191 based on Foata normal form. 0/21981 useless extension candidates. Maximal degree in co-relation 15339. Up to 5330 conditions per place. [2022-07-21 08:47:56,020 INFO L132 encePairwiseOnDemand]: 475/507 looper letters, 347 selfloop transitions, 44 changer transitions 0/721 dead transitions. [2022-07-21 08:47:56,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 721 transitions, 2341 flow [2022-07-21 08:47:56,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-21 08:47:56,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-21 08:47:56,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 7761 transitions. [2022-07-21 08:47:56,042 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6958041958041958 [2022-07-21 08:47:56,042 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 7761 transitions. [2022-07-21 08:47:56,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 7761 transitions. [2022-07-21 08:47:56,046 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:56,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 7761 transitions. [2022-07-21 08:47:56,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 352.77272727272725) internal successors, (7761), 22 states have internal predecessors, (7761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:56,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 507.0) internal successors, (11661), 23 states have internal predecessors, (11661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:56,080 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 507.0) internal successors, (11661), 23 states have internal predecessors, (11661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:56,080 INFO L186 Difference]: Start difference. First operand has 469 places, 487 transitions, 1082 flow. Second operand 22 states and 7761 transitions. [2022-07-21 08:47:56,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 721 transitions, 2341 flow [2022-07-21 08:47:56,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 489 places, 721 transitions, 2339 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-21 08:47:56,096 INFO L242 Difference]: Finished difference. Result has 497 places, 519 transitions, 1320 flow [2022-07-21 08:47:56,096 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=1080, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=456, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1320, PETRI_PLACES=497, PETRI_TRANSITIONS=519} [2022-07-21 08:47:56,099 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 38 predicate places. [2022-07-21 08:47:56,099 INFO L495 AbstractCegarLoop]: Abstraction has has 497 places, 519 transitions, 1320 flow [2022-07-21 08:47:56,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 337.36842105263156) internal successors, (6410), 19 states have internal predecessors, (6410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:56,101 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:56,101 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:56,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 08:47:56,102 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 08:47:56,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:56,103 INFO L85 PathProgramCache]: Analyzing trace with hash 1009639929, now seen corresponding path program 1 times [2022-07-21 08:47:56,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:56,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626617550] [2022-07-21 08:47:56,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:56,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:56,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:56,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:56,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626617550] [2022-07-21 08:47:56,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626617550] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:56,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:56,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 08:47:56,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459917951] [2022-07-21 08:47:56,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:56,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 08:47:56,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:56,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 08:47:56,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 08:47:56,250 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 432 out of 507 [2022-07-21 08:47:56,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 519 transitions, 1320 flow. Second operand has 5 states, 5 states have (on average 437.0) internal successors, (2185), 5 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:56,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:56,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 432 of 507 [2022-07-21 08:47:56,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:47:57,295 INFO L129 PetriNetUnfolder]: 300/5891 cut-off events. [2022-07-21 08:47:57,295 INFO L130 PetriNetUnfolder]: For 205/218 co-relation queries the response was YES. [2022-07-21 08:47:57,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7235 conditions, 5891 events. 300/5891 cut-off events. For 205/218 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 45666 event pairs, 1 based on Foata normal form. 5/5608 useless extension candidates. Maximal degree in co-relation 7036. Up to 366 conditions per place. [2022-07-21 08:47:57,336 INFO L132 encePairwiseOnDemand]: 484/507 looper letters, 76 selfloop transitions, 22 changer transitions 0/543 dead transitions. [2022-07-21 08:47:57,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 502 places, 543 transitions, 1569 flow [2022-07-21 08:47:57,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 08:47:57,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-07-21 08:47:57,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2676 transitions. [2022-07-21 08:47:57,342 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8796844181459567 [2022-07-21 08:47:57,342 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2676 transitions. [2022-07-21 08:47:57,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2676 transitions. [2022-07-21 08:47:57,344 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:47:57,344 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2676 transitions. [2022-07-21 08:47:57,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 446.0) internal successors, (2676), 6 states have internal predecessors, (2676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:57,352 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:57,353 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 507.0) internal successors, (3549), 7 states have internal predecessors, (3549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:57,353 INFO L186 Difference]: Start difference. First operand has 497 places, 519 transitions, 1320 flow. Second operand 6 states and 2676 transitions. [2022-07-21 08:47:57,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 502 places, 543 transitions, 1569 flow [2022-07-21 08:47:57,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 491 places, 543 transitions, 1547 flow, removed 0 selfloop flow, removed 11 redundant places. [2022-07-21 08:47:57,363 INFO L242 Difference]: Finished difference. Result has 495 places, 536 transitions, 1448 flow [2022-07-21 08:47:57,364 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=486, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=519, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1448, PETRI_PLACES=495, PETRI_TRANSITIONS=536} [2022-07-21 08:47:57,365 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 36 predicate places. [2022-07-21 08:47:57,365 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 536 transitions, 1448 flow [2022-07-21 08:47:57,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 437.0) internal successors, (2185), 5 states have internal predecessors, (2185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:57,366 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:47:57,366 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:47:57,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 08:47:57,366 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 08:47:57,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:47:57,367 INFO L85 PathProgramCache]: Analyzing trace with hash -642914649, now seen corresponding path program 1 times [2022-07-21 08:47:57,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:47:57,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236746299] [2022-07-21 08:47:57,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:47:57,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:47:57,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:47:58,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:47:58,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:47:58,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236746299] [2022-07-21 08:47:58,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236746299] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:47:58,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:47:58,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-07-21 08:47:58,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685724765] [2022-07-21 08:47:58,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:47:58,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 08:47:58,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:47:58,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 08:47:58,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=399, Unknown=0, NotChecked=0, Total=462 [2022-07-21 08:47:58,019 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 298 out of 507 [2022-07-21 08:47:58,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 536 transitions, 1448 flow. Second operand has 22 states, 22 states have (on average 300.5) internal successors, (6611), 22 states have internal predecessors, (6611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:47:58,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:47:58,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 298 of 507 [2022-07-21 08:47:58,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:48:08,361 INFO L129 PetriNetUnfolder]: 12936/44496 cut-off events. [2022-07-21 08:48:08,361 INFO L130 PetriNetUnfolder]: For 5167/5180 co-relation queries the response was YES. [2022-07-21 08:48:08,505 INFO L84 FinitePrefix]: Finished finitePrefix Result has 75564 conditions, 44496 events. 12936/44496 cut-off events. For 5167/5180 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 475009 event pairs, 2428 based on Foata normal form. 56/42841 useless extension candidates. Maximal degree in co-relation 39074. Up to 9111 conditions per place. [2022-07-21 08:48:08,627 INFO L132 encePairwiseOnDemand]: 436/507 looper letters, 699 selfloop transitions, 171 changer transitions 0/1163 dead transitions. [2022-07-21 08:48:08,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 531 places, 1163 transitions, 4756 flow [2022-07-21 08:48:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-21 08:48:08,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-07-21 08:48:08,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 11877 transitions. [2022-07-21 08:48:08,647 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6331360946745562 [2022-07-21 08:48:08,647 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 11877 transitions. [2022-07-21 08:48:08,648 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 11877 transitions. [2022-07-21 08:48:08,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:48:08,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 11877 transitions. [2022-07-21 08:48:08,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 321.0) internal successors, (11877), 37 states have internal predecessors, (11877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:48:08,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 507.0) internal successors, (19266), 38 states have internal predecessors, (19266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:48:08,705 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 507.0) internal successors, (19266), 38 states have internal predecessors, (19266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:48:08,705 INFO L186 Difference]: Start difference. First operand has 495 places, 536 transitions, 1448 flow. Second operand 37 states and 11877 transitions. [2022-07-21 08:48:08,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 531 places, 1163 transitions, 4756 flow [2022-07-21 08:48:08,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 1163 transitions, 4737 flow, removed 1 selfloop flow, removed 1 redundant places. [2022-07-21 08:48:08,743 INFO L242 Difference]: Finished difference. Result has 550 places, 649 transitions, 2562 flow [2022-07-21 08:48:08,744 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=1436, PETRI_DIFFERENCE_MINUEND_PLACES=494, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=536, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=2562, PETRI_PLACES=550, PETRI_TRANSITIONS=649} [2022-07-21 08:48:08,745 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 91 predicate places. [2022-07-21 08:48:08,745 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 649 transitions, 2562 flow [2022-07-21 08:48:08,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 300.5) internal successors, (6611), 22 states have internal predecessors, (6611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:48:08,747 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:48:08,747 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:48:08,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 08:48:08,748 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 08:48:08,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:48:08,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1647572475, now seen corresponding path program 2 times [2022-07-21 08:48:08,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:48:08,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895169740] [2022-07-21 08:48:08,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:48:08,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:48:08,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:48:10,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:48:10,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:48:10,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895169740] [2022-07-21 08:48:10,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895169740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:48:10,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:48:10,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2022-07-21 08:48:10,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788062398] [2022-07-21 08:48:10,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:48:10,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-21 08:48:10,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:48:10,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-21 08:48:10,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1197, Unknown=0, NotChecked=0, Total=1332 [2022-07-21 08:48:10,136 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 281 out of 507 [2022-07-21 08:48:10,143 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 649 transitions, 2562 flow. Second operand has 37 states, 37 states have (on average 282.86486486486484) internal successors, (10466), 37 states have internal predecessors, (10466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:48:10,143 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:48:10,143 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 281 of 507 [2022-07-21 08:48:10,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-21 08:48:43,982 INFO L129 PetriNetUnfolder]: 20479/68495 cut-off events. [2022-07-21 08:48:43,982 INFO L130 PetriNetUnfolder]: For 140431/140483 co-relation queries the response was YES. [2022-07-21 08:48:44,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155177 conditions, 68495 events. 20479/68495 cut-off events. For 140431/140483 co-relation queries the response was YES. Maximal size of possible extension queue 453. Compared 748632 event pairs, 3393 based on Foata normal form. 66/66091 useless extension candidates. Maximal degree in co-relation 155073. Up to 17304 conditions per place. [2022-07-21 08:48:44,888 INFO L132 encePairwiseOnDemand]: 434/507 looper letters, 1166 selfloop transitions, 422 changer transitions 0/1862 dead transitions. [2022-07-21 08:48:44,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 1862 transitions, 10707 flow [2022-07-21 08:48:44,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 111 states. [2022-07-21 08:48:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2022-07-21 08:48:44,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 32635 transitions. [2022-07-21 08:48:44,927 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.5798994260532722 [2022-07-21 08:48:44,927 INFO L72 ComplementDD]: Start complementDD. Operand 111 states and 32635 transitions. [2022-07-21 08:48:44,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 111 states and 32635 transitions. [2022-07-21 08:48:44,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-21 08:48:44,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 111 states and 32635 transitions. [2022-07-21 08:48:44,990 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 112 states, 111 states have (on average 294.009009009009) internal successors, (32635), 111 states have internal predecessors, (32635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:48:45,043 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 112 states, 112 states have (on average 507.0) internal successors, (56784), 112 states have internal predecessors, (56784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:48:45,058 INFO L81 ComplementDD]: Finished complementDD. Result has 112 states, 112 states have (on average 507.0) internal successors, (56784), 112 states have internal predecessors, (56784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:48:45,058 INFO L186 Difference]: Start difference. First operand has 550 places, 649 transitions, 2562 flow. Second operand 111 states and 32635 transitions. [2022-07-21 08:48:45,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 1862 transitions, 10707 flow [2022-07-21 08:48:45,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 1862 transitions, 10542 flow, removed 11 selfloop flow, removed 8 redundant places. [2022-07-21 08:48:45,358 INFO L242 Difference]: Finished difference. Result has 682 places, 1030 transitions, 6422 flow [2022-07-21 08:48:45,359 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=507, PETRI_DIFFERENCE_MINUEND_FLOW=2507, PETRI_DIFFERENCE_MINUEND_PLACES=542, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=649, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=506, PETRI_DIFFERENCE_SUBTRAHEND_STATES=111, PETRI_FLOW=6422, PETRI_PLACES=682, PETRI_TRANSITIONS=1030} [2022-07-21 08:48:45,360 INFO L279 CegarLoopForPetriNet]: 459 programPoint places, 223 predicate places. [2022-07-21 08:48:45,360 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 1030 transitions, 6422 flow [2022-07-21 08:48:45,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 282.86486486486484) internal successors, (10466), 37 states have internal predecessors, (10466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:48:45,363 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-21 08:48:45,363 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 08:48:45,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 08:48:45,364 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2022-07-21 08:48:45,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 08:48:45,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1411939023, now seen corresponding path program 3 times [2022-07-21 08:48:45,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 08:48:45,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645612176] [2022-07-21 08:48:45,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 08:48:45,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 08:48:45,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 08:48:47,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 08:48:47,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 08:48:47,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645612176] [2022-07-21 08:48:47,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645612176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 08:48:47,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 08:48:47,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [40] imperfect sequences [] total 40 [2022-07-21 08:48:47,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109664780] [2022-07-21 08:48:47,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 08:48:47,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-21 08:48:47,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 08:48:47,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-21 08:48:47,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=1416, Unknown=0, NotChecked=0, Total=1560 [2022-07-21 08:48:47,011 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 267 out of 507 [2022-07-21 08:48:47,017 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 1030 transitions, 6422 flow. Second operand has 40 states, 40 states have (on average 268.875) internal successors, (10755), 40 states have internal predecessors, (10755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 08:48:47,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-21 08:48:47,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 267 of 507 [2022-07-21 08:48:47,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand