./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:02:25,193 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:02:25,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:02:25,219 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:02:25,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:02:25,224 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:02:25,226 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:02:25,230 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:02:25,231 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:02:25,233 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:02:25,234 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:02:25,236 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:02:25,236 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:02:25,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:02:25,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:02:25,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:02:25,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:02:25,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:02:25,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:02:25,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:02:25,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:02:25,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:02:25,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:02:25,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:02:25,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:02:25,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:02:25,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:02:25,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:02:25,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:02:25,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:02:25,262 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:02:25,263 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:02:25,264 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:02:25,264 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:02:25,265 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:02:25,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:02:25,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:02:25,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:02:25,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:02:25,267 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:02:25,268 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:02:25,268 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 03:02:25,284 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:02:25,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:02:25,284 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:02:25,284 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:02:25,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:02:25,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:02:25,285 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:02:25,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:02:25,286 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:02:25,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:02:25,286 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 03:02:25,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:02:25,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 03:02:25,286 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:02:25,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:02:25,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:02:25,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:02:25,288 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 03:02:25,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:02:25,288 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:02:25,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:02:25,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:02:25,289 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:02:25,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:02:25,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:02:25,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:02:25,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:02:25,290 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:02:25,290 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:02:25,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:02:25,291 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:02:25,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:02:25,291 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:02:25,292 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:02:25,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 039f5312b62da5ff616f0ade8cc5a2dd494698e7519842b003d8d55f65a5fe6c [2021-12-16 03:02:25,469 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:02:25,492 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:02:25,494 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:02:25,495 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:02:25,495 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:02:25,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2021-12-16 03:02:25,554 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d9831617/f310a8d8cd8a4588bcb729a7d1b33359/FLAGebd9e9394 [2021-12-16 03:02:25,944 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:02:25,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c [2021-12-16 03:02:25,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d9831617/f310a8d8cd8a4588bcb729a7d1b33359/FLAGebd9e9394 [2021-12-16 03:02:25,966 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1d9831617/f310a8d8cd8a4588bcb729a7d1b33359 [2021-12-16 03:02:25,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:02:25,969 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:02:25,970 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:02:25,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:02:25,973 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:02:25,974 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:02:25" (1/1) ... [2021-12-16 03:02:25,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42ae5ead and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:25, skipping insertion in model container [2021-12-16 03:02:25,975 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:02:25" (1/1) ... [2021-12-16 03:02:25,980 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:02:25,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:02:26,169 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2333,2346] [2021-12-16 03:02:26,172 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:02:26,179 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:02:26,196 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-sre-subst.wvr.c[2333,2346] [2021-12-16 03:02:26,197 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:02:26,209 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:02:26,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:26 WrapperNode [2021-12-16 03:02:26,209 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:02:26,211 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:02:26,211 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:02:26,211 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:02:26,232 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:26" (1/1) ... [2021-12-16 03:02:26,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:26" (1/1) ... [2021-12-16 03:02:26,277 INFO L137 Inliner]: procedures = 22, calls = 26, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 74 [2021-12-16 03:02:26,278 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:02:26,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:02:26,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:02:26,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:02:26,286 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:26" (1/1) ... [2021-12-16 03:02:26,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:26" (1/1) ... [2021-12-16 03:02:26,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:26" (1/1) ... [2021-12-16 03:02:26,292 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:26" (1/1) ... [2021-12-16 03:02:26,310 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:26" (1/1) ... [2021-12-16 03:02:26,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:26" (1/1) ... [2021-12-16 03:02:26,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:26" (1/1) ... [2021-12-16 03:02:26,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:02:26,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:02:26,327 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:02:26,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:02:26,328 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:26" (1/1) ... [2021-12-16 03:02:26,334 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:02:26,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:02:26,362 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-16 03:02:26,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-16 03:02:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:02:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-16 03:02:26,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-16 03:02:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-16 03:02:26,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-16 03:02:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-16 03:02:26,410 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-16 03:02:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:02:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:02:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:02:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:02:26,411 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:02:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:02:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:02:26,413 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-16 03:02:26,479 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:02:26,481 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:02:26,699 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:02:26,706 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:02:26,707 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-16 03:02:26,708 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:02:26 BoogieIcfgContainer [2021-12-16 03:02:26,708 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:02:26,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:02:26,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:02:26,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:02:26,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:02:25" (1/3) ... [2021-12-16 03:02:26,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4f518d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:02:26, skipping insertion in model container [2021-12-16 03:02:26,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:02:26" (2/3) ... [2021-12-16 03:02:26,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a4f518d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:02:26, skipping insertion in model container [2021-12-16 03:02:26,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:02:26" (3/3) ... [2021-12-16 03:02:26,715 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-sre-subst.wvr.c [2021-12-16 03:02:26,719 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-16 03:02:26,719 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:02:26,719 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:02:26,719 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-16 03:02:26,746 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,746 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,747 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,747 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,748 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,749 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,750 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,750 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,750 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,750 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,750 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,751 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,752 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,753 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,753 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,753 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,753 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,753 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,753 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,753 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,753 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,754 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,755 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,755 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,755 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,757 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,757 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,758 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,758 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,761 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,761 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,761 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,762 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,763 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-16 03:02:26,766 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-16 03:02:26,825 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:02:26,838 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-16 03:02:26,848 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-16 03:02:26,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 126 places, 124 transitions, 272 flow [2021-12-16 03:02:26,934 INFO L129 PetriNetUnfolder]: 8/121 cut-off events. [2021-12-16 03:02:26,934 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-16 03:02:26,940 INFO L84 FinitePrefix]: Finished finitePrefix Result has 134 conditions, 121 events. 8/121 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 118 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2021-12-16 03:02:26,941 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 124 transitions, 272 flow [2021-12-16 03:02:26,949 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 112 places, 110 transitions, 238 flow [2021-12-16 03:02:26,988 INFO L129 PetriNetUnfolder]: 8/109 cut-off events. [2021-12-16 03:02:26,989 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-16 03:02:26,989 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:26,990 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:26,991 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:26,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:26,996 INFO L85 PathProgramCache]: Analyzing trace with hash -2142705332, now seen corresponding path program 1 times [2021-12-16 03:02:27,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:27,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450112331] [2021-12-16 03:02:27,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:27,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:27,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:27,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:27,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450112331] [2021-12-16 03:02:27,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450112331] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:27,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:27,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-16 03:02:27,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065333251] [2021-12-16 03:02:27,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:27,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:02:27,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:27,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:02:27,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:02:27,442 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 124 [2021-12-16 03:02:27,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 110 transitions, 238 flow. Second operand has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:27,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:27,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 124 [2021-12-16 03:02:27,450 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:27,705 INFO L129 PetriNetUnfolder]: 133/471 cut-off events. [2021-12-16 03:02:27,705 INFO L130 PetriNetUnfolder]: For 180/180 co-relation queries the response was YES. [2021-12-16 03:02:27,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 471 events. 133/471 cut-off events. For 180/180 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2364 event pairs, 30 based on Foata normal form. 6/453 useless extension candidates. Maximal degree in co-relation 615. Up to 68 conditions per place. [2021-12-16 03:02:27,717 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 49 selfloop transitions, 17 changer transitions 16/164 dead transitions. [2021-12-16 03:02:27,717 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 164 transitions, 549 flow [2021-12-16 03:02:27,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-16 03:02:27,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-16 03:02:27,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1324 transitions. [2021-12-16 03:02:27,737 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8213399503722084 [2021-12-16 03:02:27,738 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1324 transitions. [2021-12-16 03:02:27,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1324 transitions. [2021-12-16 03:02:27,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:27,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1324 transitions. [2021-12-16 03:02:27,749 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 101.84615384615384) internal successors, (1324), 13 states have internal predecessors, (1324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:27,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:27,759 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 124.0) internal successors, (1736), 14 states have internal predecessors, (1736), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:27,760 INFO L186 Difference]: Start difference. First operand has 112 places, 110 transitions, 238 flow. Second operand 13 states and 1324 transitions. [2021-12-16 03:02:27,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 164 transitions, 549 flow [2021-12-16 03:02:27,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 164 transitions, 511 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-16 03:02:27,768 INFO L242 Difference]: Finished difference. Result has 125 places, 120 transitions, 331 flow [2021-12-16 03:02:27,770 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=331, PETRI_PLACES=125, PETRI_TRANSITIONS=120} [2021-12-16 03:02:27,773 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 13 predicate places. [2021-12-16 03:02:27,773 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 120 transitions, 331 flow [2021-12-16 03:02:27,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 97.75) internal successors, (782), 8 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:27,774 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:27,774 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:27,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:02:27,779 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:27,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:27,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1204171975, now seen corresponding path program 1 times [2021-12-16 03:02:27,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:27,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [211843514] [2021-12-16 03:02:27,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:27,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:27,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:27,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:27,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [211843514] [2021-12-16 03:02:27,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [211843514] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:27,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:27,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:27,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913221435] [2021-12-16 03:02:27,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:27,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:27,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:27,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:27,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:27,937 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:27,938 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 120 transitions, 331 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:27,938 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:27,938 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:27,938 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:28,154 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][99], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0) (or (not (= (* 256 (div ~sponsored_0~0 256)) ~sponsored_0~0)) (not (= (* 256 (div ~sponsored_1~0 256)) ~sponsored_1~0)))), 62#thread1ENTRYtrue, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0)), 129#true, 19#L70-4true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0))]) [2021-12-16 03:02:28,155 INFO L384 tUnfolder$Statistics]: this new event has 51 ancestors and is not cut-off event [2021-12-16 03:02:28,155 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2021-12-16 03:02:28,155 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2021-12-16 03:02:28,155 INFO L387 tUnfolder$Statistics]: existing Event has 53 ancestors and is not cut-off event [2021-12-16 03:02:28,166 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][99], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0) (or (not (= (* 256 (div ~sponsored_0~0 256)) ~sponsored_0~0)) (not (= (* 256 (div ~sponsored_1~0 256)) ~sponsored_1~0)))), 87#L42-2true, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0)), 129#true, 19#L70-4true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0))]) [2021-12-16 03:02:28,167 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2021-12-16 03:02:28,167 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2021-12-16 03:02:28,167 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2021-12-16 03:02:28,167 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2021-12-16 03:02:28,169 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][99], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0) (or (not (= (* 256 (div ~sponsored_0~0 256)) ~sponsored_0~0)) (not (= (* 256 (div ~sponsored_1~0 256)) ~sponsored_1~0)))), 79#L42true, 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0))]) [2021-12-16 03:02:28,169 INFO L384 tUnfolder$Statistics]: this new event has 52 ancestors and is not cut-off event [2021-12-16 03:02:28,170 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2021-12-16 03:02:28,170 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2021-12-16 03:02:28,170 INFO L387 tUnfolder$Statistics]: existing Event has 54 ancestors and is not cut-off event [2021-12-16 03:02:28,175 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][99], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0) (or (not (= (* 256 (div ~sponsored_0~0 256)) ~sponsored_0~0)) (not (= (* 256 (div ~sponsored_1~0 256)) ~sponsored_1~0)))), 10#L54-8true, Black: 140#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), 82#L42-5true, Black: 138#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0))]) [2021-12-16 03:02:28,175 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2021-12-16 03:02:28,175 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2021-12-16 03:02:28,175 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2021-12-16 03:02:28,175 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2021-12-16 03:02:28,177 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][99], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L48-8true, 164#(and (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0) (or (not (= (* 256 (div ~sponsored_0~0 256)) ~sponsored_0~0)) (not (= (* 256 (div ~sponsored_1~0 256)) ~sponsored_1~0)))), 10#L54-8true, 90#L42-3true, Black: 140#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0)), 19#L70-4true, 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0))]) [2021-12-16 03:02:28,177 INFO L384 tUnfolder$Statistics]: this new event has 53 ancestors and is not cut-off event [2021-12-16 03:02:28,177 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2021-12-16 03:02:28,177 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2021-12-16 03:02:28,178 INFO L387 tUnfolder$Statistics]: existing Event has 55 ancestors and is not cut-off event [2021-12-16 03:02:28,267 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([307] L54-7-->L54-8: Formula: (= v_~result_5~0_1 |v_thread3Thread1of1ForFork1_#t~ite6_3|) InVars {thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|} OutVars{thread3Thread1of1ForFork1_#t~ite6=|v_thread3Thread1of1ForFork1_#t~ite6_3|, ~result_5~0=v_~result_5~0_1} AuxVars[] AssignedVars[~result_5~0][99], [Black: 150#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 113#L71-2true, 8#L48-8true, 164#(and (= (* 256 (div ~sponsored_2~0 256)) ~sponsored_2~0) (or (not (= (* 256 (div ~sponsored_0~0 256)) ~sponsored_0~0)) (not (= (* 256 (div ~sponsored_1~0 256)) ~sponsored_1~0)))), Black: 140#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0)), 129#true, Black: 132#(= ~result_4~0 0), Black: 138#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0)), Black: 134#(and (= ~result_5~0 0) (= ~result_4~0 0)), Black: 152#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 142#(and (= ~result_5~0 0) (= ~result_4~0 0) (= |thread2Thread1of1ForFork0_#t~ite4| 0) (= |thread3Thread1of1ForFork1_#t~ite6| 0)), 10#L54-8true]) [2021-12-16 03:02:28,268 INFO L384 tUnfolder$Statistics]: this new event has 62 ancestors and is not cut-off event [2021-12-16 03:02:28,268 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2021-12-16 03:02:28,268 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2021-12-16 03:02:28,268 INFO L387 tUnfolder$Statistics]: existing Event has 64 ancestors and is not cut-off event [2021-12-16 03:02:28,301 INFO L129 PetriNetUnfolder]: 488/2223 cut-off events. [2021-12-16 03:02:28,302 INFO L130 PetriNetUnfolder]: For 480/615 co-relation queries the response was YES. [2021-12-16 03:02:28,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3987 conditions, 2223 events. 488/2223 cut-off events. For 480/615 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 20060 event pairs, 102 based on Foata normal form. 24/1947 useless extension candidates. Maximal degree in co-relation 3953. Up to 297 conditions per place. [2021-12-16 03:02:28,316 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 51 selfloop transitions, 7 changer transitions 5/155 dead transitions. [2021-12-16 03:02:28,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 155 transitions, 532 flow [2021-12-16 03:02:28,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:28,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:28,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 552 transitions. [2021-12-16 03:02:28,318 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8903225806451613 [2021-12-16 03:02:28,318 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 552 transitions. [2021-12-16 03:02:28,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 552 transitions. [2021-12-16 03:02:28,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:28,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 552 transitions. [2021-12-16 03:02:28,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:28,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:28,322 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:28,322 INFO L186 Difference]: Start difference. First operand has 125 places, 120 transitions, 331 flow. Second operand 5 states and 552 transitions. [2021-12-16 03:02:28,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 155 transitions, 532 flow [2021-12-16 03:02:28,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 155 transitions, 528 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-12-16 03:02:28,333 INFO L242 Difference]: Finished difference. Result has 124 places, 123 transitions, 375 flow [2021-12-16 03:02:28,333 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=375, PETRI_PLACES=124, PETRI_TRANSITIONS=123} [2021-12-16 03:02:28,334 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 12 predicate places. [2021-12-16 03:02:28,334 INFO L470 AbstractCegarLoop]: Abstraction has has 124 places, 123 transitions, 375 flow [2021-12-16 03:02:28,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:28,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:28,335 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:28,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 03:02:28,335 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:28,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:28,336 INFO L85 PathProgramCache]: Analyzing trace with hash -135217195, now seen corresponding path program 2 times [2021-12-16 03:02:28,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:28,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172982901] [2021-12-16 03:02:28,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:28,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:28,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:28,497 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:28,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172982901] [2021-12-16 03:02:28,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172982901] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:28,497 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:28,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 03:02:28,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106411425] [2021-12-16 03:02:28,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:28,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:02:28,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:28,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:02:28,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-16 03:02:28,501 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:28,502 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 124 places, 123 transitions, 375 flow. Second operand has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:28,502 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:28,502 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:28,502 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:28,827 INFO L129 PetriNetUnfolder]: 546/2894 cut-off events. [2021-12-16 03:02:28,828 INFO L130 PetriNetUnfolder]: For 1096/1211 co-relation queries the response was YES. [2021-12-16 03:02:28,839 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5781 conditions, 2894 events. 546/2894 cut-off events. For 1096/1211 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 28906 event pairs, 140 based on Foata normal form. 36/2813 useless extension candidates. Maximal degree in co-relation 4853. Up to 333 conditions per place. [2021-12-16 03:02:28,848 INFO L132 encePairwiseOnDemand]: 118/124 looper letters, 62 selfloop transitions, 8 changer transitions 0/162 dead transitions. [2021-12-16 03:02:28,848 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 162 transitions, 692 flow [2021-12-16 03:02:28,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 03:02:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-12-16 03:02:28,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 443 transitions. [2021-12-16 03:02:28,850 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8931451612903226 [2021-12-16 03:02:28,850 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 443 transitions. [2021-12-16 03:02:28,850 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 443 transitions. [2021-12-16 03:02:28,851 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:28,851 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 443 transitions. [2021-12-16 03:02:28,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 110.75) internal successors, (443), 4 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:28,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:28,886 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:28,886 INFO L186 Difference]: Start difference. First operand has 124 places, 123 transitions, 375 flow. Second operand 4 states and 443 transitions. [2021-12-16 03:02:28,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 162 transitions, 692 flow [2021-12-16 03:02:28,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 162 transitions, 690 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-12-16 03:02:28,895 INFO L242 Difference]: Finished difference. Result has 128 places, 131 transitions, 461 flow [2021-12-16 03:02:28,895 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=373, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=461, PETRI_PLACES=128, PETRI_TRANSITIONS=131} [2021-12-16 03:02:28,896 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 16 predicate places. [2021-12-16 03:02:28,896 INFO L470 AbstractCegarLoop]: Abstraction has has 128 places, 131 transitions, 461 flow [2021-12-16 03:02:28,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.0) internal successors, (404), 4 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:28,897 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:28,897 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:28,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 03:02:28,897 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:28,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:28,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1151510213, now seen corresponding path program 1 times [2021-12-16 03:02:28,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:28,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784603207] [2021-12-16 03:02:28,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:28,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:28,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:29,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:29,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:29,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784603207] [2021-12-16 03:02:29,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784603207] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:29,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:29,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:29,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166870512] [2021-12-16 03:02:29,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:29,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:29,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:29,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:29,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:29,066 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:29,067 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 131 transitions, 461 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:29,067 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:29,067 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:29,067 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:29,550 INFO L129 PetriNetUnfolder]: 684/3697 cut-off events. [2021-12-16 03:02:29,550 INFO L130 PetriNetUnfolder]: For 2180/2293 co-relation queries the response was YES. [2021-12-16 03:02:29,562 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7463 conditions, 3697 events. 684/3697 cut-off events. For 2180/2293 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 38635 event pairs, 114 based on Foata normal form. 63/3609 useless extension candidates. Maximal degree in co-relation 5901. Up to 391 conditions per place. [2021-12-16 03:02:29,573 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 91 selfloop transitions, 31 changer transitions 3/217 dead transitions. [2021-12-16 03:02:29,573 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 217 transitions, 1208 flow [2021-12-16 03:02:29,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:02:29,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:02:29,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2021-12-16 03:02:29,576 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8894009216589862 [2021-12-16 03:02:29,576 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2021-12-16 03:02:29,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2021-12-16 03:02:29,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:29,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2021-12-16 03:02:29,578 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:29,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:29,580 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:29,581 INFO L186 Difference]: Start difference. First operand has 128 places, 131 transitions, 461 flow. Second operand 7 states and 772 transitions. [2021-12-16 03:02:29,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 217 transitions, 1208 flow [2021-12-16 03:02:29,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 217 transitions, 1208 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-16 03:02:29,590 INFO L242 Difference]: Finished difference. Result has 140 places, 161 transitions, 833 flow [2021-12-16 03:02:29,591 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=833, PETRI_PLACES=140, PETRI_TRANSITIONS=161} [2021-12-16 03:02:29,591 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 28 predicate places. [2021-12-16 03:02:29,591 INFO L470 AbstractCegarLoop]: Abstraction has has 140 places, 161 transitions, 833 flow [2021-12-16 03:02:29,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:29,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:29,592 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:29,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 03:02:29,592 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:29,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:29,593 INFO L85 PathProgramCache]: Analyzing trace with hash -900324157, now seen corresponding path program 2 times [2021-12-16 03:02:29,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:29,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296930644] [2021-12-16 03:02:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:29,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:29,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:29,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296930644] [2021-12-16 03:02:29,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296930644] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:29,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:29,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:29,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715303507] [2021-12-16 03:02:29,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:29,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:29,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:29,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:29,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:29,720 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:29,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 161 transitions, 833 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:29,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:29,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:29,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:30,213 INFO L129 PetriNetUnfolder]: 774/4611 cut-off events. [2021-12-16 03:02:30,214 INFO L130 PetriNetUnfolder]: For 5262/5421 co-relation queries the response was YES. [2021-12-16 03:02:30,233 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10208 conditions, 4611 events. 774/4611 cut-off events. For 5262/5421 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 51465 event pairs, 157 based on Foata normal form. 78/4522 useless extension candidates. Maximal degree in co-relation 8047. Up to 481 conditions per place. [2021-12-16 03:02:30,250 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 119 selfloop transitions, 36 changer transitions 5/252 dead transitions. [2021-12-16 03:02:30,250 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 252 transitions, 1910 flow [2021-12-16 03:02:30,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:02:30,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-16 03:02:30,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 663 transitions. [2021-12-16 03:02:30,252 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8911290322580645 [2021-12-16 03:02:30,252 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 663 transitions. [2021-12-16 03:02:30,252 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 663 transitions. [2021-12-16 03:02:30,253 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:30,253 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 663 transitions. [2021-12-16 03:02:30,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.5) internal successors, (663), 6 states have internal predecessors, (663), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:30,255 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:30,256 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:30,256 INFO L186 Difference]: Start difference. First operand has 140 places, 161 transitions, 833 flow. Second operand 6 states and 663 transitions. [2021-12-16 03:02:30,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 252 transitions, 1910 flow [2021-12-16 03:02:30,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 252 transitions, 1900 flow, removed 5 selfloop flow, removed 0 redundant places. [2021-12-16 03:02:30,273 INFO L242 Difference]: Finished difference. Result has 150 places, 182 transitions, 1231 flow [2021-12-16 03:02:30,273 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1231, PETRI_PLACES=150, PETRI_TRANSITIONS=182} [2021-12-16 03:02:30,274 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 38 predicate places. [2021-12-16 03:02:30,274 INFO L470 AbstractCegarLoop]: Abstraction has has 150 places, 182 transitions, 1231 flow [2021-12-16 03:02:30,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:30,275 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:30,275 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:30,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:02:30,275 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:30,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:30,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1511346701, now seen corresponding path program 1 times [2021-12-16 03:02:30,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:30,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782204339] [2021-12-16 03:02:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:30,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:30,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:30,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:30,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782204339] [2021-12-16 03:02:30,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [782204339] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:30,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:30,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:30,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682204548] [2021-12-16 03:02:30,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:30,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:30,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:30,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:30,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:30,382 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:30,383 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 182 transitions, 1231 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:30,383 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:30,383 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:30,383 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:30,933 INFO L129 PetriNetUnfolder]: 817/5056 cut-off events. [2021-12-16 03:02:30,933 INFO L130 PetriNetUnfolder]: For 8309/8489 co-relation queries the response was YES. [2021-12-16 03:02:30,953 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11774 conditions, 5056 events. 817/5056 cut-off events. For 8309/8489 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 58084 event pairs, 175 based on Foata normal form. 73/4943 useless extension candidates. Maximal degree in co-relation 9511. Up to 596 conditions per place. [2021-12-16 03:02:30,966 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 110 selfloop transitions, 47 changer transitions 13/262 dead transitions. [2021-12-16 03:02:30,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 262 transitions, 2359 flow [2021-12-16 03:02:30,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:30,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:30,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2021-12-16 03:02:30,968 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8951612903225806 [2021-12-16 03:02:30,968 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2021-12-16 03:02:30,968 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2021-12-16 03:02:30,968 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:30,968 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2021-12-16 03:02:30,970 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:30,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:30,971 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:30,971 INFO L186 Difference]: Start difference. First operand has 150 places, 182 transitions, 1231 flow. Second operand 5 states and 555 transitions. [2021-12-16 03:02:30,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 262 transitions, 2359 flow [2021-12-16 03:02:30,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 262 transitions, 2353 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-12-16 03:02:30,993 INFO L242 Difference]: Finished difference. Result has 158 places, 209 transitions, 1775 flow [2021-12-16 03:02:30,994 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1219, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1775, PETRI_PLACES=158, PETRI_TRANSITIONS=209} [2021-12-16 03:02:30,996 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 46 predicate places. [2021-12-16 03:02:30,996 INFO L470 AbstractCegarLoop]: Abstraction has has 158 places, 209 transitions, 1775 flow [2021-12-16 03:02:30,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:30,997 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:30,997 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:30,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:02:30,997 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:30,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:30,998 INFO L85 PathProgramCache]: Analyzing trace with hash -2082484693, now seen corresponding path program 1 times [2021-12-16 03:02:30,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:30,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733193725] [2021-12-16 03:02:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:30,999 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:31,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:31,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:31,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:31,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733193725] [2021-12-16 03:02:31,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733193725] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:31,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:31,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:31,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975232728] [2021-12-16 03:02:31,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:31,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:31,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:31,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:31,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:31,110 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:31,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 209 transitions, 1775 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:31,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:31,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:31,111 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:31,772 INFO L129 PetriNetUnfolder]: 786/5243 cut-off events. [2021-12-16 03:02:31,773 INFO L130 PetriNetUnfolder]: For 12595/12774 co-relation queries the response was YES. [2021-12-16 03:02:31,798 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12753 conditions, 5243 events. 786/5243 cut-off events. For 12595/12774 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 61294 event pairs, 161 based on Foata normal form. 96/5138 useless extension candidates. Maximal degree in co-relation 10320. Up to 527 conditions per place. [2021-12-16 03:02:31,814 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 166 selfloop transitions, 56 changer transitions 16/330 dead transitions. [2021-12-16 03:02:31,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 330 transitions, 3614 flow [2021-12-16 03:02:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:02:31,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:02:31,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 772 transitions. [2021-12-16 03:02:31,816 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8894009216589862 [2021-12-16 03:02:31,816 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 772 transitions. [2021-12-16 03:02:31,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 772 transitions. [2021-12-16 03:02:31,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:31,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 772 transitions. [2021-12-16 03:02:31,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:31,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:31,827 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:31,827 INFO L186 Difference]: Start difference. First operand has 158 places, 209 transitions, 1775 flow. Second operand 7 states and 772 transitions. [2021-12-16 03:02:31,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 330 transitions, 3614 flow [2021-12-16 03:02:31,861 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 330 transitions, 3614 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-16 03:02:31,866 INFO L242 Difference]: Finished difference. Result has 170 places, 246 transitions, 2581 flow [2021-12-16 03:02:31,866 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1763, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2581, PETRI_PLACES=170, PETRI_TRANSITIONS=246} [2021-12-16 03:02:31,867 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 58 predicate places. [2021-12-16 03:02:31,867 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 246 transitions, 2581 flow [2021-12-16 03:02:31,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:31,868 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:31,868 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:31,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:02:31,869 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:31,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:31,869 INFO L85 PathProgramCache]: Analyzing trace with hash -1595175819, now seen corresponding path program 2 times [2021-12-16 03:02:31,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:31,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272301449] [2021-12-16 03:02:31,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:31,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:31,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:31,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:31,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272301449] [2021-12-16 03:02:31,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272301449] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:31,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:31,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:31,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289705973] [2021-12-16 03:02:31,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:31,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:31,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:31,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:31,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:31,936 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:31,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 246 transitions, 2581 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:31,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:31,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:31,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:32,668 INFO L129 PetriNetUnfolder]: 858/5819 cut-off events. [2021-12-16 03:02:32,668 INFO L130 PetriNetUnfolder]: For 15878/16099 co-relation queries the response was YES. [2021-12-16 03:02:32,695 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14822 conditions, 5819 events. 858/5819 cut-off events. For 15878/16099 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 69646 event pairs, 202 based on Foata normal form. 46/5637 useless extension candidates. Maximal degree in co-relation 12583. Up to 631 conditions per place. [2021-12-16 03:02:32,711 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 167 selfloop transitions, 86 changer transitions 6/351 dead transitions. [2021-12-16 03:02:32,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 351 transitions, 4434 flow [2021-12-16 03:02:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:02:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:02:32,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 769 transitions. [2021-12-16 03:02:32,713 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8859447004608295 [2021-12-16 03:02:32,713 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 769 transitions. [2021-12-16 03:02:32,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 769 transitions. [2021-12-16 03:02:32,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:32,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 769 transitions. [2021-12-16 03:02:32,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.85714285714286) internal successors, (769), 7 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:32,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:32,717 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:32,717 INFO L186 Difference]: Start difference. First operand has 170 places, 246 transitions, 2581 flow. Second operand 7 states and 769 transitions. [2021-12-16 03:02:32,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 351 transitions, 4434 flow [2021-12-16 03:02:32,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 351 transitions, 4386 flow, removed 24 selfloop flow, removed 0 redundant places. [2021-12-16 03:02:32,757 INFO L242 Difference]: Finished difference. Result has 182 places, 286 transitions, 3561 flow [2021-12-16 03:02:32,758 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2545, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3561, PETRI_PLACES=182, PETRI_TRANSITIONS=286} [2021-12-16 03:02:32,758 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 70 predicate places. [2021-12-16 03:02:32,758 INFO L470 AbstractCegarLoop]: Abstraction has has 182 places, 286 transitions, 3561 flow [2021-12-16 03:02:32,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:32,759 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:32,759 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:32,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 03:02:32,759 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:32,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:32,760 INFO L85 PathProgramCache]: Analyzing trace with hash 999688075, now seen corresponding path program 3 times [2021-12-16 03:02:32,760 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:32,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277910563] [2021-12-16 03:02:32,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:32,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:32,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:32,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:32,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277910563] [2021-12-16 03:02:32,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277910563] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:32,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:32,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:32,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614401230] [2021-12-16 03:02:32,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:32,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:32,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:32,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:32,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:32,821 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:32,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 286 transitions, 3561 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:32,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:32,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:32,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:33,547 INFO L129 PetriNetUnfolder]: 844/5798 cut-off events. [2021-12-16 03:02:33,547 INFO L130 PetriNetUnfolder]: For 19728/19938 co-relation queries the response was YES. [2021-12-16 03:02:33,578 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15364 conditions, 5798 events. 844/5798 cut-off events. For 19728/19938 co-relation queries the response was YES. Maximal size of possible extension queue 423. Compared 69341 event pairs, 205 based on Foata normal form. 68/5633 useless extension candidates. Maximal degree in co-relation 12967. Up to 675 conditions per place. [2021-12-16 03:02:33,595 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 188 selfloop transitions, 57 changer transitions 10/347 dead transitions. [2021-12-16 03:02:33,595 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 347 transitions, 4865 flow [2021-12-16 03:02:33,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:33,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:33,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2021-12-16 03:02:33,597 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8919354838709678 [2021-12-16 03:02:33,597 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2021-12-16 03:02:33,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2021-12-16 03:02:33,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:33,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2021-12-16 03:02:33,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,600 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,600 INFO L186 Difference]: Start difference. First operand has 182 places, 286 transitions, 3561 flow. Second operand 5 states and 553 transitions. [2021-12-16 03:02:33,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 347 transitions, 4865 flow [2021-12-16 03:02:33,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 347 transitions, 4789 flow, removed 38 selfloop flow, removed 0 redundant places. [2021-12-16 03:02:33,665 INFO L242 Difference]: Finished difference. Result has 190 places, 299 transitions, 3987 flow [2021-12-16 03:02:33,666 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3423, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3987, PETRI_PLACES=190, PETRI_TRANSITIONS=299} [2021-12-16 03:02:33,667 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 78 predicate places. [2021-12-16 03:02:33,667 INFO L470 AbstractCegarLoop]: Abstraction has has 190 places, 299 transitions, 3987 flow [2021-12-16 03:02:33,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,668 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:33,668 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:33,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 03:02:33,668 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:33,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:33,669 INFO L85 PathProgramCache]: Analyzing trace with hash 411071935, now seen corresponding path program 2 times [2021-12-16 03:02:33,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:33,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646906922] [2021-12-16 03:02:33,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:33,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:33,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:33,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:33,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646906922] [2021-12-16 03:02:33,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646906922] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:33,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:33,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:33,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677861944] [2021-12-16 03:02:33,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:33,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:33,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:33,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:33,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:33,757 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:33,759 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 299 transitions, 3987 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:33,759 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:33,759 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:33,759 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:34,394 INFO L129 PetriNetUnfolder]: 827/5377 cut-off events. [2021-12-16 03:02:34,394 INFO L130 PetriNetUnfolder]: For 21877/22052 co-relation queries the response was YES. [2021-12-16 03:02:34,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15192 conditions, 5377 events. 827/5377 cut-off events. For 21877/22052 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 63030 event pairs, 209 based on Foata normal form. 60/5198 useless extension candidates. Maximal degree in co-relation 12845. Up to 760 conditions per place. [2021-12-16 03:02:34,449 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 181 selfloop transitions, 56 changer transitions 9/338 dead transitions. [2021-12-16 03:02:34,450 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 338 transitions, 4917 flow [2021-12-16 03:02:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2021-12-16 03:02:34,451 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8919354838709678 [2021-12-16 03:02:34,452 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2021-12-16 03:02:34,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2021-12-16 03:02:34,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:34,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2021-12-16 03:02:34,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,454 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,454 INFO L186 Difference]: Start difference. First operand has 190 places, 299 transitions, 3987 flow. Second operand 5 states and 553 transitions. [2021-12-16 03:02:34,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 338 transitions, 4917 flow [2021-12-16 03:02:34,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 338 transitions, 4913 flow, removed 2 selfloop flow, removed 0 redundant places. [2021-12-16 03:02:34,540 INFO L242 Difference]: Finished difference. Result has 196 places, 297 transitions, 4140 flow [2021-12-16 03:02:34,541 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3945, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4140, PETRI_PLACES=196, PETRI_TRANSITIONS=297} [2021-12-16 03:02:34,542 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 84 predicate places. [2021-12-16 03:02:34,542 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 297 transitions, 4140 flow [2021-12-16 03:02:34,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,543 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:34,543 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:34,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 03:02:34,543 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:34,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:34,544 INFO L85 PathProgramCache]: Analyzing trace with hash -304520781, now seen corresponding path program 4 times [2021-12-16 03:02:34,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:34,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438179344] [2021-12-16 03:02:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:34,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:34,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:34,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:34,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438179344] [2021-12-16 03:02:34,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438179344] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:34,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:34,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:34,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888866345] [2021-12-16 03:02:34,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:34,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:34,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:34,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:34,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:34,623 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:34,623 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 297 transitions, 4140 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:34,623 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:34,624 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:34,624 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:35,247 INFO L129 PetriNetUnfolder]: 745/4698 cut-off events. [2021-12-16 03:02:35,247 INFO L130 PetriNetUnfolder]: For 24346/24528 co-relation queries the response was YES. [2021-12-16 03:02:35,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13968 conditions, 4698 events. 745/4698 cut-off events. For 24346/24528 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 53738 event pairs, 167 based on Foata normal form. 69/4563 useless extension candidates. Maximal degree in co-relation 11734. Up to 511 conditions per place. [2021-12-16 03:02:35,297 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 181 selfloop transitions, 60 changer transitions 15/348 dead transitions. [2021-12-16 03:02:35,297 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 348 transitions, 5288 flow [2021-12-16 03:02:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:35,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:35,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 555 transitions. [2021-12-16 03:02:35,299 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8951612903225806 [2021-12-16 03:02:35,299 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 555 transitions. [2021-12-16 03:02:35,299 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 555 transitions. [2021-12-16 03:02:35,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:35,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 555 transitions. [2021-12-16 03:02:35,301 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,302 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,302 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,302 INFO L186 Difference]: Start difference. First operand has 196 places, 297 transitions, 4140 flow. Second operand 5 states and 555 transitions. [2021-12-16 03:02:35,302 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 348 transitions, 5288 flow [2021-12-16 03:02:35,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 348 transitions, 5264 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-16 03:02:35,393 INFO L242 Difference]: Finished difference. Result has 201 places, 300 transitions, 4405 flow [2021-12-16 03:02:35,393 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4075, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=4405, PETRI_PLACES=201, PETRI_TRANSITIONS=300} [2021-12-16 03:02:35,394 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 89 predicate places. [2021-12-16 03:02:35,394 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 300 transitions, 4405 flow [2021-12-16 03:02:35,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,395 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:35,395 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:35,395 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 03:02:35,395 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:35,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:35,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1302455423, now seen corresponding path program 3 times [2021-12-16 03:02:35,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:35,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184373165] [2021-12-16 03:02:35,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:35,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:35,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:35,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:35,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184373165] [2021-12-16 03:02:35,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184373165] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:35,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:35,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:35,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080811713] [2021-12-16 03:02:35,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:35,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:35,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:35,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:35,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:35,457 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:35,458 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 300 transitions, 4405 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:35,458 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:35,458 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:35,458 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:36,199 INFO L129 PetriNetUnfolder]: 737/4580 cut-off events. [2021-12-16 03:02:36,199 INFO L130 PetriNetUnfolder]: For 25936/26104 co-relation queries the response was YES. [2021-12-16 03:02:36,240 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14133 conditions, 4580 events. 737/4580 cut-off events. For 25936/26104 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 51770 event pairs, 174 based on Foata normal form. 35/4413 useless extension candidates. Maximal degree in co-relation 12034. Up to 530 conditions per place. [2021-12-16 03:02:36,261 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 168 selfloop transitions, 92 changer transitions 6/358 dead transitions. [2021-12-16 03:02:36,262 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 358 transitions, 5566 flow [2021-12-16 03:02:36,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:02:36,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:02:36,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 768 transitions. [2021-12-16 03:02:36,264 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8847926267281107 [2021-12-16 03:02:36,264 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 768 transitions. [2021-12-16 03:02:36,265 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 768 transitions. [2021-12-16 03:02:36,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:36,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 768 transitions. [2021-12-16 03:02:36,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.71428571428571) internal successors, (768), 7 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:36,268 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:36,268 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:36,268 INFO L186 Difference]: Start difference. First operand has 201 places, 300 transitions, 4405 flow. Second operand 7 states and 768 transitions. [2021-12-16 03:02:36,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 358 transitions, 5566 flow [2021-12-16 03:02:36,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 358 transitions, 5523 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-16 03:02:36,383 INFO L242 Difference]: Finished difference. Result has 206 places, 302 transitions, 4622 flow [2021-12-16 03:02:36,383 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4333, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4622, PETRI_PLACES=206, PETRI_TRANSITIONS=302} [2021-12-16 03:02:36,383 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 94 predicate places. [2021-12-16 03:02:36,384 INFO L470 AbstractCegarLoop]: Abstraction has has 206 places, 302 transitions, 4622 flow [2021-12-16 03:02:36,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:36,384 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:36,384 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:36,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 03:02:36,385 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:36,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:36,385 INFO L85 PathProgramCache]: Analyzing trace with hash -688063009, now seen corresponding path program 3 times [2021-12-16 03:02:36,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:36,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724930827] [2021-12-16 03:02:36,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:36,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:36,443 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:36,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724930827] [2021-12-16 03:02:36,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724930827] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:36,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:36,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:36,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253234179] [2021-12-16 03:02:36,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:36,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:36,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:36,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:36,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:36,445 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:36,446 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 302 transitions, 4622 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:36,446 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:36,446 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:36,446 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:37,168 INFO L129 PetriNetUnfolder]: 747/4699 cut-off events. [2021-12-16 03:02:37,168 INFO L130 PetriNetUnfolder]: For 27232/27422 co-relation queries the response was YES. [2021-12-16 03:02:37,209 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14553 conditions, 4699 events. 747/4699 cut-off events. For 27232/27422 co-relation queries the response was YES. Maximal size of possible extension queue 371. Compared 53132 event pairs, 186 based on Foata normal form. 38/4526 useless extension candidates. Maximal degree in co-relation 12391. Up to 557 conditions per place. [2021-12-16 03:02:37,224 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 176 selfloop transitions, 77 changer transitions 4/349 dead transitions. [2021-12-16 03:02:37,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 349 transitions, 5661 flow [2021-12-16 03:02:37,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:02:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-16 03:02:37,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 661 transitions. [2021-12-16 03:02:37,227 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8884408602150538 [2021-12-16 03:02:37,227 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 661 transitions. [2021-12-16 03:02:37,227 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 661 transitions. [2021-12-16 03:02:37,227 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:37,228 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 661 transitions. [2021-12-16 03:02:37,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 110.16666666666667) internal successors, (661), 6 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:37,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:37,230 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:37,230 INFO L186 Difference]: Start difference. First operand has 206 places, 302 transitions, 4622 flow. Second operand 6 states and 661 transitions. [2021-12-16 03:02:37,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 349 transitions, 5661 flow [2021-12-16 03:02:37,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 349 transitions, 5544 flow, removed 38 selfloop flow, removed 2 redundant places. [2021-12-16 03:02:37,363 INFO L242 Difference]: Finished difference. Result has 210 places, 302 transitions, 4704 flow [2021-12-16 03:02:37,363 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4494, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4704, PETRI_PLACES=210, PETRI_TRANSITIONS=302} [2021-12-16 03:02:37,365 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 98 predicate places. [2021-12-16 03:02:37,366 INFO L470 AbstractCegarLoop]: Abstraction has has 210 places, 302 transitions, 4704 flow [2021-12-16 03:02:37,366 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:37,366 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:37,366 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:37,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 03:02:37,366 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:37,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:37,367 INFO L85 PathProgramCache]: Analyzing trace with hash -304012637, now seen corresponding path program 4 times [2021-12-16 03:02:37,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:37,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506770503] [2021-12-16 03:02:37,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:37,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:37,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:37,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:37,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506770503] [2021-12-16 03:02:37,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506770503] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:37,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:37,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:37,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049767487] [2021-12-16 03:02:37,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:37,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:37,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:37,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:37,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:37,424 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:37,425 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 302 transitions, 4704 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:37,425 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:37,425 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:37,425 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:38,032 INFO L129 PetriNetUnfolder]: 712/4689 cut-off events. [2021-12-16 03:02:38,032 INFO L130 PetriNetUnfolder]: For 27839/28025 co-relation queries the response was YES. [2021-12-16 03:02:38,061 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14490 conditions, 4689 events. 712/4689 cut-off events. For 27839/28025 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 53353 event pairs, 156 based on Foata normal form. 66/4549 useless extension candidates. Maximal degree in co-relation 12185. Up to 534 conditions per place. [2021-12-16 03:02:38,072 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 205 selfloop transitions, 75 changer transitions 13/385 dead transitions. [2021-12-16 03:02:38,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 385 transitions, 6804 flow [2021-12-16 03:02:38,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:38,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:38,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2021-12-16 03:02:38,074 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8983870967741936 [2021-12-16 03:02:38,074 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2021-12-16 03:02:38,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2021-12-16 03:02:38,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:38,074 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2021-12-16 03:02:38,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:38,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:38,076 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:38,076 INFO L186 Difference]: Start difference. First operand has 210 places, 302 transitions, 4704 flow. Second operand 5 states and 557 transitions. [2021-12-16 03:02:38,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 385 transitions, 6804 flow [2021-12-16 03:02:38,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 385 transitions, 6700 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-16 03:02:38,193 INFO L242 Difference]: Finished difference. Result has 215 places, 326 transitions, 5474 flow [2021-12-16 03:02:38,193 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4501, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5474, PETRI_PLACES=215, PETRI_TRANSITIONS=326} [2021-12-16 03:02:38,193 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 103 predicate places. [2021-12-16 03:02:38,194 INFO L470 AbstractCegarLoop]: Abstraction has has 215 places, 326 transitions, 5474 flow [2021-12-16 03:02:38,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:38,194 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:38,194 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:38,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 03:02:38,194 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:38,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:38,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1966872417, now seen corresponding path program 5 times [2021-12-16 03:02:38,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:38,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580750799] [2021-12-16 03:02:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:38,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:38,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:38,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:38,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580750799] [2021-12-16 03:02:38,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580750799] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:38,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:38,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:38,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729575415] [2021-12-16 03:02:38,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:38,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:38,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:38,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:38,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:38,265 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:38,266 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 326 transitions, 5474 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:38,266 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:38,266 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:38,266 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:38,868 INFO L129 PetriNetUnfolder]: 676/4409 cut-off events. [2021-12-16 03:02:38,868 INFO L130 PetriNetUnfolder]: For 29728/29898 co-relation queries the response was YES. [2021-12-16 03:02:38,906 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14272 conditions, 4409 events. 676/4409 cut-off events. For 29728/29898 co-relation queries the response was YES. Maximal size of possible extension queue 355. Compared 49821 event pairs, 174 based on Foata normal form. 47/4261 useless extension candidates. Maximal degree in co-relation 11942. Up to 488 conditions per place. [2021-12-16 03:02:38,918 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 194 selfloop transitions, 86 changer transitions 5/377 dead transitions. [2021-12-16 03:02:38,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 377 transitions, 6853 flow [2021-12-16 03:02:38,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:38,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:38,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2021-12-16 03:02:38,920 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896774193548387 [2021-12-16 03:02:38,921 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2021-12-16 03:02:38,921 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2021-12-16 03:02:38,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:38,921 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2021-12-16 03:02:38,922 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:38,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:38,923 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:38,923 INFO L186 Difference]: Start difference. First operand has 215 places, 326 transitions, 5474 flow. Second operand 5 states and 556 transitions. [2021-12-16 03:02:38,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 377 transitions, 6853 flow [2021-12-16 03:02:39,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 377 transitions, 6806 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-16 03:02:39,044 INFO L242 Difference]: Finished difference. Result has 221 places, 336 transitions, 5982 flow [2021-12-16 03:02:39,045 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5316, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=5982, PETRI_PLACES=221, PETRI_TRANSITIONS=336} [2021-12-16 03:02:39,045 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 109 predicate places. [2021-12-16 03:02:39,045 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 336 transitions, 5982 flow [2021-12-16 03:02:39,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:39,045 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:39,046 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:39,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 03:02:39,046 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:39,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:39,046 INFO L85 PathProgramCache]: Analyzing trace with hash 1985103583, now seen corresponding path program 3 times [2021-12-16 03:02:39,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:39,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137675473] [2021-12-16 03:02:39,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:39,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:39,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:39,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:39,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137675473] [2021-12-16 03:02:39,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137675473] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:39,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:39,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:39,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576550403] [2021-12-16 03:02:39,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:39,109 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:39,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:39,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:39,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:39,110 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:39,110 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 336 transitions, 5982 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:39,110 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:39,110 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:39,110 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:39,713 INFO L129 PetriNetUnfolder]: 722/4745 cut-off events. [2021-12-16 03:02:39,713 INFO L130 PetriNetUnfolder]: For 33123/33308 co-relation queries the response was YES. [2021-12-16 03:02:39,750 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15234 conditions, 4745 events. 722/4745 cut-off events. For 33123/33308 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 54021 event pairs, 183 based on Foata normal form. 43/4574 useless extension candidates. Maximal degree in co-relation 12803. Up to 679 conditions per place. [2021-12-16 03:02:39,762 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 217 selfloop transitions, 61 changer transitions 12/382 dead transitions. [2021-12-16 03:02:39,763 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 382 transitions, 7276 flow [2021-12-16 03:02:39,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:39,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:39,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2021-12-16 03:02:39,765 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2021-12-16 03:02:39,765 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2021-12-16 03:02:39,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2021-12-16 03:02:39,765 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:39,765 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2021-12-16 03:02:39,766 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:39,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:39,767 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:39,767 INFO L186 Difference]: Start difference. First operand has 221 places, 336 transitions, 5982 flow. Second operand 5 states and 548 transitions. [2021-12-16 03:02:39,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 382 transitions, 7276 flow [2021-12-16 03:02:39,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 382 transitions, 7209 flow, removed 10 selfloop flow, removed 1 redundant places. [2021-12-16 03:02:39,920 INFO L242 Difference]: Finished difference. Result has 227 places, 343 transitions, 6361 flow [2021-12-16 03:02:39,920 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=5916, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6361, PETRI_PLACES=227, PETRI_TRANSITIONS=343} [2021-12-16 03:02:39,920 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 115 predicate places. [2021-12-16 03:02:39,920 INFO L470 AbstractCegarLoop]: Abstraction has has 227 places, 343 transitions, 6361 flow [2021-12-16 03:02:39,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:39,921 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:39,921 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:39,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 03:02:39,921 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:39,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:39,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1637940285, now seen corresponding path program 4 times [2021-12-16 03:02:39,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:39,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807702588] [2021-12-16 03:02:39,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:39,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:39,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:39,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:39,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807702588] [2021-12-16 03:02:39,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807702588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:39,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:39,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:39,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627722436] [2021-12-16 03:02:39,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:39,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:39,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:39,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:39,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:39,977 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:39,977 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 343 transitions, 6361 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:39,977 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:39,977 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:39,977 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:40,611 INFO L129 PetriNetUnfolder]: 687/4690 cut-off events. [2021-12-16 03:02:40,611 INFO L130 PetriNetUnfolder]: For 36367/36543 co-relation queries the response was YES. [2021-12-16 03:02:40,645 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15085 conditions, 4690 events. 687/4690 cut-off events. For 36367/36543 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 53645 event pairs, 164 based on Foata normal form. 69/4545 useless extension candidates. Maximal degree in co-relation 12804. Up to 528 conditions per place. [2021-12-16 03:02:40,655 INFO L132 encePairwiseOnDemand]: 109/124 looper letters, 217 selfloop transitions, 77 changer transitions 16/402 dead transitions. [2021-12-16 03:02:40,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 402 transitions, 7863 flow [2021-12-16 03:02:40,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 557 transitions. [2021-12-16 03:02:40,656 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8983870967741936 [2021-12-16 03:02:40,656 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 557 transitions. [2021-12-16 03:02:40,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 557 transitions. [2021-12-16 03:02:40,657 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:40,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 557 transitions. [2021-12-16 03:02:40,658 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:40,658 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:40,659 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:40,659 INFO L186 Difference]: Start difference. First operand has 227 places, 343 transitions, 6361 flow. Second operand 5 states and 557 transitions. [2021-12-16 03:02:40,659 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 402 transitions, 7863 flow [2021-12-16 03:02:40,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 402 transitions, 7837 flow, removed 7 selfloop flow, removed 1 redundant places. [2021-12-16 03:02:40,794 INFO L242 Difference]: Finished difference. Result has 234 places, 347 transitions, 6653 flow [2021-12-16 03:02:40,794 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6149, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=6653, PETRI_PLACES=234, PETRI_TRANSITIONS=347} [2021-12-16 03:02:40,795 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 122 predicate places. [2021-12-16 03:02:40,795 INFO L470 AbstractCegarLoop]: Abstraction has has 234 places, 347 transitions, 6653 flow [2021-12-16 03:02:40,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:40,795 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:40,795 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:40,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-16 03:02:40,796 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:40,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:40,796 INFO L85 PathProgramCache]: Analyzing trace with hash 622643391, now seen corresponding path program 6 times [2021-12-16 03:02:40,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:40,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865793243] [2021-12-16 03:02:40,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:40,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:40,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:40,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:40,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:40,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865793243] [2021-12-16 03:02:40,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865793243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:40,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:40,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:40,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955624370] [2021-12-16 03:02:40,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:40,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:40,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:40,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:40,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:40,856 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:40,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 347 transitions, 6653 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:40,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:40,857 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:40,857 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:41,544 INFO L129 PetriNetUnfolder]: 717/4959 cut-off events. [2021-12-16 03:02:41,544 INFO L130 PetriNetUnfolder]: For 36812/37018 co-relation queries the response was YES. [2021-12-16 03:02:41,593 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15911 conditions, 4959 events. 717/4959 cut-off events. For 36812/37018 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 57461 event pairs, 195 based on Foata normal form. 45/4782 useless extension candidates. Maximal degree in co-relation 13192. Up to 598 conditions per place. [2021-12-16 03:02:41,609 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 226 selfloop transitions, 77 changer transitions 7/402 dead transitions. [2021-12-16 03:02:41,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 402 transitions, 8341 flow [2021-12-16 03:02:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:41,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:41,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 542 transitions. [2021-12-16 03:02:41,612 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8741935483870967 [2021-12-16 03:02:41,612 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 542 transitions. [2021-12-16 03:02:41,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 542 transitions. [2021-12-16 03:02:41,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:41,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 542 transitions. [2021-12-16 03:02:41,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.4) internal successors, (542), 5 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:41,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:41,614 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:41,614 INFO L186 Difference]: Start difference. First operand has 234 places, 347 transitions, 6653 flow. Second operand 5 states and 542 transitions. [2021-12-16 03:02:41,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 402 transitions, 8341 flow [2021-12-16 03:02:41,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 402 transitions, 8325 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-16 03:02:41,818 INFO L242 Difference]: Finished difference. Result has 240 places, 368 transitions, 7500 flow [2021-12-16 03:02:41,818 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=6608, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=273, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7500, PETRI_PLACES=240, PETRI_TRANSITIONS=368} [2021-12-16 03:02:41,818 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 128 predicate places. [2021-12-16 03:02:41,818 INFO L470 AbstractCegarLoop]: Abstraction has has 240 places, 368 transitions, 7500 flow [2021-12-16 03:02:41,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:41,819 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:41,819 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:41,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 03:02:41,819 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:41,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:41,819 INFO L85 PathProgramCache]: Analyzing trace with hash -1556887265, now seen corresponding path program 5 times [2021-12-16 03:02:41,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:41,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660652842] [2021-12-16 03:02:41,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:41,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:41,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:41,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660652842] [2021-12-16 03:02:41,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660652842] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:41,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:41,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:41,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346090278] [2021-12-16 03:02:41,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:41,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:41,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:41,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:41,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:41,894 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:41,894 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 368 transitions, 7500 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:41,894 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:41,894 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:41,894 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:42,675 INFO L129 PetriNetUnfolder]: 739/5117 cut-off events. [2021-12-16 03:02:42,675 INFO L130 PetriNetUnfolder]: For 42006/42263 co-relation queries the response was YES. [2021-12-16 03:02:42,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16627 conditions, 5117 events. 739/5117 cut-off events. For 42006/42263 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 59826 event pairs, 214 based on Foata normal form. 50/4931 useless extension candidates. Maximal degree in co-relation 13722. Up to 590 conditions per place. [2021-12-16 03:02:42,715 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 231 selfloop transitions, 85 changer transitions 2/410 dead transitions. [2021-12-16 03:02:42,715 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 410 transitions, 8762 flow [2021-12-16 03:02:42,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:42,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2021-12-16 03:02:42,717 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2021-12-16 03:02:42,717 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2021-12-16 03:02:42,717 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2021-12-16 03:02:42,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:42,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2021-12-16 03:02:42,718 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:42,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:42,719 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:42,719 INFO L186 Difference]: Start difference. First operand has 240 places, 368 transitions, 7500 flow. Second operand 5 states and 551 transitions. [2021-12-16 03:02:42,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 410 transitions, 8762 flow [2021-12-16 03:02:42,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 410 transitions, 8746 flow, removed 8 selfloop flow, removed 0 redundant places. [2021-12-16 03:02:42,919 INFO L242 Difference]: Finished difference. Result has 246 places, 374 transitions, 7928 flow [2021-12-16 03:02:42,920 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7484, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7928, PETRI_PLACES=246, PETRI_TRANSITIONS=374} [2021-12-16 03:02:42,920 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 134 predicate places. [2021-12-16 03:02:42,920 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 374 transitions, 7928 flow [2021-12-16 03:02:42,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:42,920 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:42,921 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:42,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-16 03:02:42,921 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:42,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:42,921 INFO L85 PathProgramCache]: Analyzing trace with hash -1531030021, now seen corresponding path program 6 times [2021-12-16 03:02:42,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:42,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410038053] [2021-12-16 03:02:42,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:42,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:42,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:43,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:43,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410038053] [2021-12-16 03:02:43,006 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410038053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:43,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:43,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:43,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174681415] [2021-12-16 03:02:43,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:43,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:43,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:43,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:43,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:43,007 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:43,008 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 374 transitions, 7928 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:43,008 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:43,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:43,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:43,700 INFO L129 PetriNetUnfolder]: 691/4793 cut-off events. [2021-12-16 03:02:43,700 INFO L130 PetriNetUnfolder]: For 44373/44595 co-relation queries the response was YES. [2021-12-16 03:02:43,755 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16139 conditions, 4793 events. 691/4793 cut-off events. For 44373/44595 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 55785 event pairs, 175 based on Foata normal form. 60/4639 useless extension candidates. Maximal degree in co-relation 15138. Up to 554 conditions per place. [2021-12-16 03:02:43,773 INFO L132 encePairwiseOnDemand]: 110/124 looper letters, 223 selfloop transitions, 83 changer transitions 8/406 dead transitions. [2021-12-16 03:02:43,774 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 406 transitions, 8833 flow [2021-12-16 03:02:43,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:43,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 556 transitions. [2021-12-16 03:02:43,775 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.896774193548387 [2021-12-16 03:02:43,775 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 556 transitions. [2021-12-16 03:02:43,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 556 transitions. [2021-12-16 03:02:43,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:43,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 556 transitions. [2021-12-16 03:02:43,776 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.2) internal successors, (556), 5 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:43,777 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:43,777 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:43,777 INFO L186 Difference]: Start difference. First operand has 246 places, 374 transitions, 7928 flow. Second operand 5 states and 556 transitions. [2021-12-16 03:02:43,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 406 transitions, 8833 flow [2021-12-16 03:02:44,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 406 transitions, 8833 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-16 03:02:44,026 INFO L242 Difference]: Finished difference. Result has 252 places, 365 transitions, 7861 flow [2021-12-16 03:02:44,026 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7681, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=7861, PETRI_PLACES=252, PETRI_TRANSITIONS=365} [2021-12-16 03:02:44,026 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 140 predicate places. [2021-12-16 03:02:44,026 INFO L470 AbstractCegarLoop]: Abstraction has has 252 places, 365 transitions, 7861 flow [2021-12-16 03:02:44,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:44,027 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:44,027 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:44,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-16 03:02:44,027 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:44,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash 805353895, now seen corresponding path program 4 times [2021-12-16 03:02:44,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:44,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996543254] [2021-12-16 03:02:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:44,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:44,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:44,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:44,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996543254] [2021-12-16 03:02:44,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996543254] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:44,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:44,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:44,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371561488] [2021-12-16 03:02:44,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:44,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:44,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:44,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:44,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:44,106 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:44,106 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 365 transitions, 7861 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:44,106 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:44,106 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:44,106 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:44,822 INFO L129 PetriNetUnfolder]: 698/4913 cut-off events. [2021-12-16 03:02:44,822 INFO L130 PetriNetUnfolder]: For 48183/48362 co-relation queries the response was YES. [2021-12-16 03:02:44,872 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16532 conditions, 4913 events. 698/4913 cut-off events. For 48183/48362 co-relation queries the response was YES. Maximal size of possible extension queue 372. Compared 56976 event pairs, 181 based on Foata normal form. 43/4756 useless extension candidates. Maximal degree in co-relation 15592. Up to 641 conditions per place. [2021-12-16 03:02:44,888 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 236 selfloop transitions, 55 changer transitions 12/395 dead transitions. [2021-12-16 03:02:44,888 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 395 transitions, 8898 flow [2021-12-16 03:02:44,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:44,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2021-12-16 03:02:44,900 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2021-12-16 03:02:44,900 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2021-12-16 03:02:44,900 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2021-12-16 03:02:44,901 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:44,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2021-12-16 03:02:44,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:44,902 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:44,902 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:44,902 INFO L186 Difference]: Start difference. First operand has 252 places, 365 transitions, 7861 flow. Second operand 5 states and 545 transitions. [2021-12-16 03:02:44,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 395 transitions, 8898 flow [2021-12-16 03:02:45,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 395 transitions, 8839 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-16 03:02:45,162 INFO L242 Difference]: Finished difference. Result has 258 places, 369 transitions, 8111 flow [2021-12-16 03:02:45,162 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7805, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=365, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8111, PETRI_PLACES=258, PETRI_TRANSITIONS=369} [2021-12-16 03:02:45,163 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 146 predicate places. [2021-12-16 03:02:45,163 INFO L470 AbstractCegarLoop]: Abstraction has has 258 places, 369 transitions, 8111 flow [2021-12-16 03:02:45,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:45,163 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:45,163 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:45,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 03:02:45,163 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:45,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:45,163 INFO L85 PathProgramCache]: Analyzing trace with hash -1998643137, now seen corresponding path program 5 times [2021-12-16 03:02:45,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:45,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454983724] [2021-12-16 03:02:45,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:45,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:45,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:45,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:45,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:45,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454983724] [2021-12-16 03:02:45,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454983724] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:45,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:45,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:45,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869919857] [2021-12-16 03:02:45,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:45,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:45,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:45,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:45,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:45,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:45,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 369 transitions, 8111 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:45,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:45,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:45,239 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:46,149 INFO L129 PetriNetUnfolder]: 681/4755 cut-off events. [2021-12-16 03:02:46,149 INFO L130 PetriNetUnfolder]: For 48494/48714 co-relation queries the response was YES. [2021-12-16 03:02:46,203 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16376 conditions, 4755 events. 681/4755 cut-off events. For 48494/48714 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 55028 event pairs, 184 based on Foata normal form. 56/4594 useless extension candidates. Maximal degree in co-relation 15432. Up to 554 conditions per place. [2021-12-16 03:02:46,219 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 222 selfloop transitions, 75 changer transitions 6/395 dead transitions. [2021-12-16 03:02:46,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 395 transitions, 9051 flow [2021-12-16 03:02:46,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:46,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:46,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2021-12-16 03:02:46,220 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2021-12-16 03:02:46,220 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2021-12-16 03:02:46,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2021-12-16 03:02:46,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:46,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2021-12-16 03:02:46,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:46,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:46,222 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:46,223 INFO L186 Difference]: Start difference. First operand has 258 places, 369 transitions, 8111 flow. Second operand 5 states and 545 transitions. [2021-12-16 03:02:46,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 395 transitions, 9051 flow [2021-12-16 03:02:46,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 395 transitions, 9009 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-12-16 03:02:46,524 INFO L242 Difference]: Finished difference. Result has 264 places, 370 transitions, 8408 flow [2021-12-16 03:02:46,525 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=7995, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=366, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8408, PETRI_PLACES=264, PETRI_TRANSITIONS=370} [2021-12-16 03:02:46,525 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 152 predicate places. [2021-12-16 03:02:46,525 INFO L470 AbstractCegarLoop]: Abstraction has has 264 places, 370 transitions, 8408 flow [2021-12-16 03:02:46,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:46,526 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:46,526 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:46,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 03:02:46,527 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:46,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:46,527 INFO L85 PathProgramCache]: Analyzing trace with hash 350778313, now seen corresponding path program 5 times [2021-12-16 03:02:46,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:46,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906750868] [2021-12-16 03:02:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:46,528 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:46,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:46,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906750868] [2021-12-16 03:02:46,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906750868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:46,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:46,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:46,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634983794] [2021-12-16 03:02:46,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:46,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:46,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:46,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:46,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:46,609 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:46,610 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 370 transitions, 8408 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:46,610 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:46,610 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:46,610 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:47,488 INFO L129 PetriNetUnfolder]: 694/4996 cut-off events. [2021-12-16 03:02:47,488 INFO L130 PetriNetUnfolder]: For 50759/50979 co-relation queries the response was YES. [2021-12-16 03:02:47,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17159 conditions, 4996 events. 694/4996 cut-off events. For 50759/50979 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 58611 event pairs, 173 based on Foata normal form. 60/4844 useless extension candidates. Maximal degree in co-relation 16057. Up to 629 conditions per place. [2021-12-16 03:02:47,553 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 226 selfloop transitions, 74 changer transitions 12/404 dead transitions. [2021-12-16 03:02:47,553 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 404 transitions, 9489 flow [2021-12-16 03:02:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:47,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2021-12-16 03:02:47,554 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.882258064516129 [2021-12-16 03:02:47,554 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2021-12-16 03:02:47,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2021-12-16 03:02:47,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:47,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2021-12-16 03:02:47,555 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:47,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:47,556 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:47,556 INFO L186 Difference]: Start difference. First operand has 264 places, 370 transitions, 8408 flow. Second operand 5 states and 547 transitions. [2021-12-16 03:02:47,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 404 transitions, 9489 flow [2021-12-16 03:02:47,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 404 transitions, 9441 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-12-16 03:02:47,841 INFO L242 Difference]: Finished difference. Result has 269 places, 372 transitions, 8611 flow [2021-12-16 03:02:47,842 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8309, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=8611, PETRI_PLACES=269, PETRI_TRANSITIONS=372} [2021-12-16 03:02:47,842 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 157 predicate places. [2021-12-16 03:02:47,842 INFO L470 AbstractCegarLoop]: Abstraction has has 269 places, 372 transitions, 8611 flow [2021-12-16 03:02:47,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:47,842 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:47,842 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:47,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 03:02:47,842 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:47,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:47,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1040190007, now seen corresponding path program 6 times [2021-12-16 03:02:47,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:47,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350139472] [2021-12-16 03:02:47,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:47,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:47,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:47,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350139472] [2021-12-16 03:02:47,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350139472] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:47,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:47,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:47,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239975684] [2021-12-16 03:02:47,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:47,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:47,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:47,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:47,895 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:47,895 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 372 transitions, 8611 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:47,895 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:47,895 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:47,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:48,656 INFO L129 PetriNetUnfolder]: 723/5184 cut-off events. [2021-12-16 03:02:48,656 INFO L130 PetriNetUnfolder]: For 58380/58625 co-relation queries the response was YES. [2021-12-16 03:02:48,713 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17850 conditions, 5184 events. 723/5184 cut-off events. For 58380/58625 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 61414 event pairs, 207 based on Foata normal form. 57/5024 useless extension candidates. Maximal degree in co-relation 16692. Up to 613 conditions per place. [2021-12-16 03:02:48,728 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 225 selfloop transitions, 90 changer transitions 3/410 dead transitions. [2021-12-16 03:02:48,728 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 410 transitions, 10020 flow [2021-12-16 03:02:48,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:48,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:48,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 549 transitions. [2021-12-16 03:02:48,729 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.885483870967742 [2021-12-16 03:02:48,729 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 549 transitions. [2021-12-16 03:02:48,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 549 transitions. [2021-12-16 03:02:48,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:48,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 549 transitions. [2021-12-16 03:02:48,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.8) internal successors, (549), 5 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:48,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:48,731 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:48,731 INFO L186 Difference]: Start difference. First operand has 269 places, 372 transitions, 8611 flow. Second operand 5 states and 549 transitions. [2021-12-16 03:02:48,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 410 transitions, 10020 flow [2021-12-16 03:02:48,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 410 transitions, 9875 flow, removed 17 selfloop flow, removed 3 redundant places. [2021-12-16 03:02:49,000 INFO L242 Difference]: Finished difference. Result has 273 places, 385 transitions, 9220 flow [2021-12-16 03:02:49,001 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8475, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=372, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9220, PETRI_PLACES=273, PETRI_TRANSITIONS=385} [2021-12-16 03:02:49,001 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 161 predicate places. [2021-12-16 03:02:49,001 INFO L470 AbstractCegarLoop]: Abstraction has has 273 places, 385 transitions, 9220 flow [2021-12-16 03:02:49,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:49,001 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:49,002 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:49,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-16 03:02:49,002 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:49,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:49,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1580319761, now seen corresponding path program 6 times [2021-12-16 03:02:49,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:49,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763600036] [2021-12-16 03:02:49,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:49,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:49,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:49,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763600036] [2021-12-16 03:02:49,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763600036] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:49,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:49,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:49,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813231235] [2021-12-16 03:02:49,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:49,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:49,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:49,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:49,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:49,058 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:49,058 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 385 transitions, 9220 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:49,058 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:49,058 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:49,058 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:49,957 INFO L129 PetriNetUnfolder]: 684/4996 cut-off events. [2021-12-16 03:02:49,957 INFO L130 PetriNetUnfolder]: For 60589/60836 co-relation queries the response was YES. [2021-12-16 03:02:50,014 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17505 conditions, 4996 events. 684/4996 cut-off events. For 60589/60836 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 59152 event pairs, 185 based on Foata normal form. 67/4859 useless extension candidates. Maximal degree in co-relation 16303. Up to 561 conditions per place. [2021-12-16 03:02:50,031 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 219 selfloop transitions, 101 changer transitions 9/421 dead transitions. [2021-12-16 03:02:50,031 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 421 transitions, 10259 flow [2021-12-16 03:02:50,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:02:50,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:02:50,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 763 transitions. [2021-12-16 03:02:50,036 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2021-12-16 03:02:50,037 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 763 transitions. [2021-12-16 03:02:50,037 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 763 transitions. [2021-12-16 03:02:50,037 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:50,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 763 transitions. [2021-12-16 03:02:50,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 109.0) internal successors, (763), 7 states have internal predecessors, (763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:50,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:50,039 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:50,039 INFO L186 Difference]: Start difference. First operand has 273 places, 385 transitions, 9220 flow. Second operand 7 states and 763 transitions. [2021-12-16 03:02:50,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 421 transitions, 10259 flow [2021-12-16 03:02:50,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 421 transitions, 10118 flow, removed 24 selfloop flow, removed 3 redundant places. [2021-12-16 03:02:50,333 INFO L242 Difference]: Finished difference. Result has 279 places, 385 transitions, 9388 flow [2021-12-16 03:02:50,334 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9000, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=382, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9388, PETRI_PLACES=279, PETRI_TRANSITIONS=385} [2021-12-16 03:02:50,334 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 167 predicate places. [2021-12-16 03:02:50,334 INFO L470 AbstractCegarLoop]: Abstraction has has 279 places, 385 transitions, 9388 flow [2021-12-16 03:02:50,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:50,335 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:50,335 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:50,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-16 03:02:50,335 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:50,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:50,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1264112329, now seen corresponding path program 7 times [2021-12-16 03:02:50,335 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:50,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922621451] [2021-12-16 03:02:50,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:50,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:50,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:50,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:50,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922621451] [2021-12-16 03:02:50,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922621451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:50,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:50,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:50,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914825945] [2021-12-16 03:02:50,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:50,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:50,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:50,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:50,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:50,386 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:50,387 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 385 transitions, 9388 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:50,387 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:50,387 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:50,387 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:51,193 INFO L129 PetriNetUnfolder]: 670/4834 cut-off events. [2021-12-16 03:02:51,193 INFO L130 PetriNetUnfolder]: For 59171/59419 co-relation queries the response was YES. [2021-12-16 03:02:51,255 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17245 conditions, 4834 events. 670/4834 cut-off events. For 59171/59419 co-relation queries the response was YES. Maximal size of possible extension queue 388. Compared 56673 event pairs, 175 based on Foata normal form. 62/4697 useless extension candidates. Maximal degree in co-relation 16038. Up to 568 conditions per place. [2021-12-16 03:02:51,272 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 223 selfloop transitions, 85 changer transitions 7/407 dead transitions. [2021-12-16 03:02:51,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 407 transitions, 10036 flow [2021-12-16 03:02:51,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:02:51,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-16 03:02:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 659 transitions. [2021-12-16 03:02:51,273 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.885752688172043 [2021-12-16 03:02:51,273 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 659 transitions. [2021-12-16 03:02:51,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 659 transitions. [2021-12-16 03:02:51,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:51,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 659 transitions. [2021-12-16 03:02:51,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:51,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:51,275 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:51,275 INFO L186 Difference]: Start difference. First operand has 279 places, 385 transitions, 9388 flow. Second operand 6 states and 659 transitions. [2021-12-16 03:02:51,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 407 transitions, 10036 flow [2021-12-16 03:02:51,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 407 transitions, 9851 flow, removed 54 selfloop flow, removed 2 redundant places. [2021-12-16 03:02:51,576 INFO L242 Difference]: Finished difference. Result has 284 places, 376 transitions, 9132 flow [2021-12-16 03:02:51,576 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8877, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=9132, PETRI_PLACES=284, PETRI_TRANSITIONS=376} [2021-12-16 03:02:51,576 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 172 predicate places. [2021-12-16 03:02:51,576 INFO L470 AbstractCegarLoop]: Abstraction has has 284 places, 376 transitions, 9132 flow [2021-12-16 03:02:51,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:51,577 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:51,577 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:51,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-16 03:02:51,577 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:51,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:51,577 INFO L85 PathProgramCache]: Analyzing trace with hash -1780225207, now seen corresponding path program 7 times [2021-12-16 03:02:51,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:51,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551014431] [2021-12-16 03:02:51,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:51,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:51,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:51,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:51,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551014431] [2021-12-16 03:02:51,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551014431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:51,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:51,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:51,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71924843] [2021-12-16 03:02:51,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:51,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:51,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:51,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:51,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:51,626 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:51,627 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 376 transitions, 9132 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:51,627 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:51,627 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:51,627 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:52,372 INFO L129 PetriNetUnfolder]: 632/4620 cut-off events. [2021-12-16 03:02:52,372 INFO L130 PetriNetUnfolder]: For 59028/59244 co-relation queries the response was YES. [2021-12-16 03:02:52,425 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16565 conditions, 4620 events. 632/4620 cut-off events. For 59028/59244 co-relation queries the response was YES. Maximal size of possible extension queue 369. Compared 53737 event pairs, 157 based on Foata normal form. 59/4493 useless extension candidates. Maximal degree in co-relation 15393. Up to 539 conditions per place. [2021-12-16 03:02:52,440 INFO L132 encePairwiseOnDemand]: 108/124 looper letters, 205 selfloop transitions, 92 changer transitions 7/396 dead transitions. [2021-12-16 03:02:52,440 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 396 transitions, 9704 flow [2021-12-16 03:02:52,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:02:52,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-12-16 03:02:52,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 659 transitions. [2021-12-16 03:02:52,441 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.885752688172043 [2021-12-16 03:02:52,441 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 659 transitions. [2021-12-16 03:02:52,441 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 659 transitions. [2021-12-16 03:02:52,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:52,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 659 transitions. [2021-12-16 03:02:52,442 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.83333333333333) internal successors, (659), 6 states have internal predecessors, (659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:52,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:52,443 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:52,443 INFO L186 Difference]: Start difference. First operand has 284 places, 376 transitions, 9132 flow. Second operand 6 states and 659 transitions. [2021-12-16 03:02:52,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 396 transitions, 9704 flow [2021-12-16 03:02:52,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 396 transitions, 9544 flow, removed 6 selfloop flow, removed 5 redundant places. [2021-12-16 03:02:52,721 INFO L242 Difference]: Finished difference. Result has 285 places, 367 transitions, 8808 flow [2021-12-16 03:02:52,722 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8694, PETRI_DIFFERENCE_MINUEND_PLACES=279, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=370, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=278, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8808, PETRI_PLACES=285, PETRI_TRANSITIONS=367} [2021-12-16 03:02:52,722 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 173 predicate places. [2021-12-16 03:02:52,722 INFO L470 AbstractCegarLoop]: Abstraction has has 285 places, 367 transitions, 8808 flow [2021-12-16 03:02:52,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:52,722 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:52,722 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:52,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-16 03:02:52,722 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:52,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:52,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1655621339, now seen corresponding path program 8 times [2021-12-16 03:02:52,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:52,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291148149] [2021-12-16 03:02:52,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:52,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:52,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:52,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:52,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291148149] [2021-12-16 03:02:52,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291148149] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:52,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:52,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:52,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511646088] [2021-12-16 03:02:52,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:52,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:52,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:52,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:52,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:52,791 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:52,792 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 367 transitions, 8808 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:52,792 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:52,792 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:52,792 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:53,612 INFO L129 PetriNetUnfolder]: 672/4954 cut-off events. [2021-12-16 03:02:53,612 INFO L130 PetriNetUnfolder]: For 56693/56928 co-relation queries the response was YES. [2021-12-16 03:02:53,671 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17235 conditions, 4954 events. 672/4954 cut-off events. For 56693/56928 co-relation queries the response was YES. Maximal size of possible extension queue 393. Compared 58298 event pairs, 194 based on Foata normal form. 52/4794 useless extension candidates. Maximal degree in co-relation 16046. Up to 595 conditions per place. [2021-12-16 03:02:53,686 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 232 selfloop transitions, 75 changer transitions 0/399 dead transitions. [2021-12-16 03:02:53,686 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 399 transitions, 9876 flow [2021-12-16 03:02:53,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:53,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:53,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2021-12-16 03:02:53,687 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2021-12-16 03:02:53,687 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2021-12-16 03:02:53,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2021-12-16 03:02:53,688 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:53,688 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2021-12-16 03:02:53,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:53,689 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:53,689 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:53,689 INFO L186 Difference]: Start difference. First operand has 285 places, 367 transitions, 8808 flow. Second operand 5 states and 545 transitions. [2021-12-16 03:02:53,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 399 transitions, 9876 flow [2021-12-16 03:02:53,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 399 transitions, 9734 flow, removed 10 selfloop flow, removed 3 redundant places. [2021-12-16 03:02:53,976 INFO L242 Difference]: Finished difference. Result has 288 places, 374 transitions, 9063 flow [2021-12-16 03:02:53,977 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8668, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=367, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9063, PETRI_PLACES=288, PETRI_TRANSITIONS=374} [2021-12-16 03:02:53,977 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 176 predicate places. [2021-12-16 03:02:53,977 INFO L470 AbstractCegarLoop]: Abstraction has has 288 places, 374 transitions, 9063 flow [2021-12-16 03:02:53,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:53,978 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:53,978 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:53,978 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-16 03:02:53,978 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:53,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:53,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1334311631, now seen corresponding path program 8 times [2021-12-16 03:02:53,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:53,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939873349] [2021-12-16 03:02:53,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:53,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:53,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:54,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:54,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939873349] [2021-12-16 03:02:54,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939873349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:54,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:54,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:54,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957079389] [2021-12-16 03:02:54,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:54,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:54,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:54,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:54,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:54,055 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:54,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 288 places, 374 transitions, 9063 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:54,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:54,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:54,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:54,933 INFO L129 PetriNetUnfolder]: 701/5158 cut-off events. [2021-12-16 03:02:54,934 INFO L130 PetriNetUnfolder]: For 59458/59704 co-relation queries the response was YES. [2021-12-16 03:02:54,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18107 conditions, 5158 events. 701/5158 cut-off events. For 59458/59704 co-relation queries the response was YES. Maximal size of possible extension queue 405. Compared 61187 event pairs, 190 based on Foata normal form. 57/4993 useless extension candidates. Maximal degree in co-relation 16987. Up to 621 conditions per place. [2021-12-16 03:02:55,013 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 239 selfloop transitions, 78 changer transitions 6/415 dead transitions. [2021-12-16 03:02:55,013 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 415 transitions, 10597 flow [2021-12-16 03:02:55,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:55,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:55,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 545 transitions. [2021-12-16 03:02:55,015 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8790322580645161 [2021-12-16 03:02:55,015 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 545 transitions. [2021-12-16 03:02:55,015 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 545 transitions. [2021-12-16 03:02:55,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:55,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 545 transitions. [2021-12-16 03:02:55,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:55,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:55,016 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:55,017 INFO L186 Difference]: Start difference. First operand has 288 places, 374 transitions, 9063 flow. Second operand 5 states and 545 transitions. [2021-12-16 03:02:55,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 415 transitions, 10597 flow [2021-12-16 03:02:55,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 415 transitions, 10550 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-12-16 03:02:55,387 INFO L242 Difference]: Finished difference. Result has 294 places, 385 transitions, 9799 flow [2021-12-16 03:02:55,388 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=8981, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=295, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9799, PETRI_PLACES=294, PETRI_TRANSITIONS=385} [2021-12-16 03:02:55,389 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 182 predicate places. [2021-12-16 03:02:55,389 INFO L470 AbstractCegarLoop]: Abstraction has has 294 places, 385 transitions, 9799 flow [2021-12-16 03:02:55,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:55,389 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:55,389 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:55,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-16 03:02:55,390 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:55,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:55,390 INFO L85 PathProgramCache]: Analyzing trace with hash -681119643, now seen corresponding path program 9 times [2021-12-16 03:02:55,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:55,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944059493] [2021-12-16 03:02:55,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:55,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:55,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:55,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:55,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:55,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944059493] [2021-12-16 03:02:55,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944059493] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:55,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:55,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:55,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116621762] [2021-12-16 03:02:55,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:55,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:55,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:55,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:55,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:55,440 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:55,440 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 385 transitions, 9799 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:55,440 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:55,440 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:55,441 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:56,278 INFO L129 PetriNetUnfolder]: 690/5052 cut-off events. [2021-12-16 03:02:56,278 INFO L130 PetriNetUnfolder]: For 60374/60624 co-relation queries the response was YES. [2021-12-16 03:02:56,342 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18165 conditions, 5052 events. 690/5052 cut-off events. For 60374/60624 co-relation queries the response was YES. Maximal size of possible extension queue 413. Compared 59729 event pairs, 187 based on Foata normal form. 54/4875 useless extension candidates. Maximal degree in co-relation 17040. Up to 600 conditions per place. [2021-12-16 03:02:56,359 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 236 selfloop transitions, 75 changer transitions 1/404 dead transitions. [2021-12-16 03:02:56,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 404 transitions, 10588 flow [2021-12-16 03:02:56,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:56,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:56,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2021-12-16 03:02:56,360 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.882258064516129 [2021-12-16 03:02:56,361 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2021-12-16 03:02:56,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2021-12-16 03:02:56,361 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:56,361 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2021-12-16 03:02:56,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,363 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,363 INFO L186 Difference]: Start difference. First operand has 294 places, 385 transitions, 9799 flow. Second operand 5 states and 547 transitions. [2021-12-16 03:02:56,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 298 places, 404 transitions, 10588 flow [2021-12-16 03:02:56,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 404 transitions, 10523 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-12-16 03:02:56,737 INFO L242 Difference]: Finished difference. Result has 297 places, 384 transitions, 9870 flow [2021-12-16 03:02:56,738 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9687, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=9870, PETRI_PLACES=297, PETRI_TRANSITIONS=384} [2021-12-16 03:02:56,738 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 185 predicate places. [2021-12-16 03:02:56,738 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 384 transitions, 9870 flow [2021-12-16 03:02:56,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,739 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:56,739 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:56,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-16 03:02:56,739 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:56,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:56,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1207949989, now seen corresponding path program 9 times [2021-12-16 03:02:56,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:56,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261544577] [2021-12-16 03:02:56,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:56,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:56,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:56,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:56,795 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:56,795 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261544577] [2021-12-16 03:02:56,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261544577] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:56,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:56,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:56,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245332881] [2021-12-16 03:02:56,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:56,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:56,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:56,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:56,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:56,796 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:56,797 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 384 transitions, 9870 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:56,797 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:56,797 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:56,797 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:57,656 INFO L129 PetriNetUnfolder]: 671/4782 cut-off events. [2021-12-16 03:02:57,657 INFO L130 PetriNetUnfolder]: For 61341/61580 co-relation queries the response was YES. [2021-12-16 03:02:57,709 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17627 conditions, 4782 events. 671/4782 cut-off events. For 61341/61580 co-relation queries the response was YES. Maximal size of possible extension queue 398. Compared 55989 event pairs, 171 based on Foata normal form. 50/4624 useless extension candidates. Maximal degree in co-relation 16508. Up to 545 conditions per place. [2021-12-16 03:02:57,722 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 236 selfloop transitions, 90 changer transitions 8/426 dead transitions. [2021-12-16 03:02:57,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 426 transitions, 11231 flow [2021-12-16 03:02:57,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:02:57,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:02:57,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 760 transitions. [2021-12-16 03:02:57,727 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8755760368663594 [2021-12-16 03:02:57,727 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 760 transitions. [2021-12-16 03:02:57,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 760 transitions. [2021-12-16 03:02:57,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:57,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 760 transitions. [2021-12-16 03:02:57,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,729 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:57,729 INFO L186 Difference]: Start difference. First operand has 297 places, 384 transitions, 9870 flow. Second operand 7 states and 760 transitions. [2021-12-16 03:02:57,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 426 transitions, 11231 flow [2021-12-16 03:02:58,062 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 426 transitions, 11054 flow, removed 19 selfloop flow, removed 4 redundant places. [2021-12-16 03:02:58,070 INFO L242 Difference]: Finished difference. Result has 301 places, 384 transitions, 9898 flow [2021-12-16 03:02:58,073 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9550, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=9898, PETRI_PLACES=301, PETRI_TRANSITIONS=384} [2021-12-16 03:02:58,074 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 189 predicate places. [2021-12-16 03:02:58,074 INFO L470 AbstractCegarLoop]: Abstraction has has 301 places, 384 transitions, 9898 flow [2021-12-16 03:02:58,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:58,074 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:58,074 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:58,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-16 03:02:58,075 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:58,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:58,075 INFO L85 PathProgramCache]: Analyzing trace with hash -724097617, now seen corresponding path program 7 times [2021-12-16 03:02:58,075 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:58,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846513646] [2021-12-16 03:02:58,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:58,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:58,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:58,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:58,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846513646] [2021-12-16 03:02:58,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846513646] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:58,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:58,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:58,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778392775] [2021-12-16 03:02:58,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:58,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:58,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:58,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:58,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:58,153 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:58,153 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 384 transitions, 9898 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:58,153 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:58,153 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:58,153 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:02:58,942 INFO L129 PetriNetUnfolder]: 672/4812 cut-off events. [2021-12-16 03:02:58,942 INFO L130 PetriNetUnfolder]: For 61676/61941 co-relation queries the response was YES. [2021-12-16 03:02:59,000 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17488 conditions, 4812 events. 672/4812 cut-off events. For 61676/61941 co-relation queries the response was YES. Maximal size of possible extension queue 386. Compared 55944 event pairs, 164 based on Foata normal form. 60/4658 useless extension candidates. Maximal degree in co-relation 16361. Up to 508 conditions per place. [2021-12-16 03:02:59,018 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 243 selfloop transitions, 76 changer transitions 0/411 dead transitions. [2021-12-16 03:02:59,018 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 411 transitions, 11124 flow [2021-12-16 03:02:59,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:02:59,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:02:59,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 539 transitions. [2021-12-16 03:02:59,020 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8693548387096774 [2021-12-16 03:02:59,020 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 539 transitions. [2021-12-16 03:02:59,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 539 transitions. [2021-12-16 03:02:59,020 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:02:59,020 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 539 transitions. [2021-12-16 03:02:59,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:59,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:59,021 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:59,022 INFO L186 Difference]: Start difference. First operand has 301 places, 384 transitions, 9898 flow. Second operand 5 states and 539 transitions. [2021-12-16 03:02:59,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 411 transitions, 11124 flow [2021-12-16 03:02:59,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 411 transitions, 10991 flow, removed 17 selfloop flow, removed 2 redundant places. [2021-12-16 03:02:59,402 INFO L242 Difference]: Finished difference. Result has 305 places, 391 transitions, 10365 flow [2021-12-16 03:02:59,403 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=9744, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=383, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10365, PETRI_PLACES=305, PETRI_TRANSITIONS=391} [2021-12-16 03:02:59,403 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 193 predicate places. [2021-12-16 03:02:59,403 INFO L470 AbstractCegarLoop]: Abstraction has has 305 places, 391 transitions, 10365 flow [2021-12-16 03:02:59,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:59,403 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:02:59,404 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:02:59,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-16 03:02:59,404 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:02:59,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:02:59,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1308961583, now seen corresponding path program 7 times [2021-12-16 03:02:59,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:02:59,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350533587] [2021-12-16 03:02:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:02:59,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:02:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:02:59,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:02:59,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:02:59,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350533587] [2021-12-16 03:02:59,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350533587] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:02:59,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:02:59,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:02:59,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49257650] [2021-12-16 03:02:59,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:02:59,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:02:59,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:02:59,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:02:59,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:02:59,456 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:02:59,457 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 391 transitions, 10365 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:02:59,457 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:02:59,457 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:02:59,457 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:00,222 INFO L129 PetriNetUnfolder]: 664/4824 cut-off events. [2021-12-16 03:03:00,222 INFO L130 PetriNetUnfolder]: For 61780/62040 co-relation queries the response was YES. [2021-12-16 03:03:00,279 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17734 conditions, 4824 events. 664/4824 cut-off events. For 61780/62040 co-relation queries the response was YES. Maximal size of possible extension queue 389. Compared 56456 event pairs, 188 based on Foata normal form. 58/4667 useless extension candidates. Maximal degree in co-relation 16613. Up to 531 conditions per place. [2021-12-16 03:03:00,294 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 242 selfloop transitions, 76 changer transitions 0/410 dead transitions. [2021-12-16 03:03:00,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 410 transitions, 11184 flow [2021-12-16 03:03:00,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:03:00,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:03:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2021-12-16 03:03:00,295 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8725806451612903 [2021-12-16 03:03:00,295 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2021-12-16 03:03:00,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2021-12-16 03:03:00,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:00,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2021-12-16 03:03:00,296 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:00,297 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:00,297 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:00,297 INFO L186 Difference]: Start difference. First operand has 305 places, 391 transitions, 10365 flow. Second operand 5 states and 541 transitions. [2021-12-16 03:03:00,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 410 transitions, 11184 flow [2021-12-16 03:03:00,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 410 transitions, 11178 flow, removed 3 selfloop flow, removed 0 redundant places. [2021-12-16 03:03:00,614 INFO L242 Difference]: Finished difference. Result has 310 places, 393 transitions, 10576 flow [2021-12-16 03:03:00,614 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10335, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10576, PETRI_PLACES=310, PETRI_TRANSITIONS=393} [2021-12-16 03:03:00,615 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 198 predicate places. [2021-12-16 03:03:00,615 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 393 transitions, 10576 flow [2021-12-16 03:03:00,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:00,615 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:00,615 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:00,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-16 03:03:00,616 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:00,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:00,616 INFO L85 PathProgramCache]: Analyzing trace with hash 473350561, now seen corresponding path program 8 times [2021-12-16 03:03:00,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:00,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962825499] [2021-12-16 03:03:00,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:00,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:00,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:00,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:00,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:00,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962825499] [2021-12-16 03:03:00,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962825499] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:00,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:00,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:03:00,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77690038] [2021-12-16 03:03:00,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:00,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:03:00,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:00,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:03:00,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:03:00,665 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:03:00,665 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 393 transitions, 10576 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:00,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:00,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:03:00,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:01,430 INFO L129 PetriNetUnfolder]: 661/4769 cut-off events. [2021-12-16 03:03:01,430 INFO L130 PetriNetUnfolder]: For 64209/64458 co-relation queries the response was YES. [2021-12-16 03:03:01,484 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17841 conditions, 4769 events. 661/4769 cut-off events. For 64209/64458 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 55595 event pairs, 156 based on Foata normal form. 56/4601 useless extension candidates. Maximal degree in co-relation 16724. Up to 543 conditions per place. [2021-12-16 03:03:01,496 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 254 selfloop transitions, 70 changer transitions 1/417 dead transitions. [2021-12-16 03:03:01,496 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 417 transitions, 11558 flow [2021-12-16 03:03:01,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:03:01,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:03:01,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2021-12-16 03:03:01,498 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.882258064516129 [2021-12-16 03:03:01,498 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2021-12-16 03:03:01,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2021-12-16 03:03:01,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:01,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2021-12-16 03:03:01,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:01,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:01,499 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:01,500 INFO L186 Difference]: Start difference. First operand has 310 places, 393 transitions, 10576 flow. Second operand 5 states and 547 transitions. [2021-12-16 03:03:01,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 417 transitions, 11558 flow [2021-12-16 03:03:01,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 417 transitions, 11504 flow, removed 8 selfloop flow, removed 1 redundant places. [2021-12-16 03:03:01,865 INFO L242 Difference]: Finished difference. Result has 316 places, 396 transitions, 10880 flow [2021-12-16 03:03:01,866 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10522, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=323, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=10880, PETRI_PLACES=316, PETRI_TRANSITIONS=396} [2021-12-16 03:03:01,867 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 204 predicate places. [2021-12-16 03:03:01,867 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 396 transitions, 10880 flow [2021-12-16 03:03:01,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:01,867 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:01,871 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:01,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-16 03:03:01,871 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:01,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:01,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2021837099, now seen corresponding path program 9 times [2021-12-16 03:03:01,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:01,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139085685] [2021-12-16 03:03:01,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:01,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:01,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:01,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:01,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:01,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139085685] [2021-12-16 03:03:01,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139085685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:01,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:01,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:03:01,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524046112] [2021-12-16 03:03:01,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:01,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:03:01,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:01,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:03:01,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:03:01,950 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:03:01,950 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 396 transitions, 10880 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:01,951 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:01,951 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:03:01,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:02,721 INFO L129 PetriNetUnfolder]: 665/4891 cut-off events. [2021-12-16 03:03:02,722 INFO L130 PetriNetUnfolder]: For 70258/70517 co-relation queries the response was YES. [2021-12-16 03:03:02,778 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18224 conditions, 4891 events. 665/4891 cut-off events. For 70258/70517 co-relation queries the response was YES. Maximal size of possible extension queue 392. Compared 57368 event pairs, 208 based on Foata normal form. 60/4728 useless extension candidates. Maximal degree in co-relation 17032. Up to 720 conditions per place. [2021-12-16 03:03:02,793 INFO L132 encePairwiseOnDemand]: 115/124 looper letters, 284 selfloop transitions, 45 changer transitions 0/421 dead transitions. [2021-12-16 03:03:02,793 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 421 transitions, 12136 flow [2021-12-16 03:03:02,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:03:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:03:02,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 541 transitions. [2021-12-16 03:03:02,794 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8725806451612903 [2021-12-16 03:03:02,794 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 541 transitions. [2021-12-16 03:03:02,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 541 transitions. [2021-12-16 03:03:02,795 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:02,795 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 541 transitions. [2021-12-16 03:03:02,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 108.2) internal successors, (541), 5 states have internal predecessors, (541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:02,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:02,796 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:02,796 INFO L186 Difference]: Start difference. First operand has 316 places, 396 transitions, 10880 flow. Second operand 5 states and 541 transitions. [2021-12-16 03:03:02,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 421 transitions, 12136 flow [2021-12-16 03:03:03,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 421 transitions, 12077 flow, removed 8 selfloop flow, removed 2 redundant places. [2021-12-16 03:03:03,159 INFO L242 Difference]: Finished difference. Result has 320 places, 402 transitions, 11228 flow [2021-12-16 03:03:03,160 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=10787, PETRI_DIFFERENCE_MINUEND_PLACES=314, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=395, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11228, PETRI_PLACES=320, PETRI_TRANSITIONS=402} [2021-12-16 03:03:03,160 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 208 predicate places. [2021-12-16 03:03:03,160 INFO L470 AbstractCegarLoop]: Abstraction has has 320 places, 402 transitions, 11228 flow [2021-12-16 03:03:03,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:03,161 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:03,161 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:03,161 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-16 03:03:03,161 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:03,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:03,161 INFO L85 PathProgramCache]: Analyzing trace with hash -522002673, now seen corresponding path program 10 times [2021-12-16 03:03:03,162 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:03,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034606261] [2021-12-16 03:03:03,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:03,162 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:03,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:03,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:03,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034606261] [2021-12-16 03:03:03,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034606261] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:03,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:03,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:03:03,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942317150] [2021-12-16 03:03:03,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:03,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:03:03,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:03,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:03:03,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:03:03,231 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:03:03,231 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 402 transitions, 11228 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:03,231 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:03,231 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:03:03,231 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:04,007 INFO L129 PetriNetUnfolder]: 658/4826 cut-off events. [2021-12-16 03:03:04,007 INFO L130 PetriNetUnfolder]: For 67212/67453 co-relation queries the response was YES. [2021-12-16 03:03:04,122 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18265 conditions, 4826 events. 658/4826 cut-off events. For 67212/67453 co-relation queries the response was YES. Maximal size of possible extension queue 394. Compared 56362 event pairs, 145 based on Foata normal form. 56/4668 useless extension candidates. Maximal degree in co-relation 17050. Up to 665 conditions per place. [2021-12-16 03:03:04,133 INFO L132 encePairwiseOnDemand]: 116/124 looper letters, 267 selfloop transitions, 57 changer transitions 0/416 dead transitions. [2021-12-16 03:03:04,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 416 transitions, 11985 flow [2021-12-16 03:03:04,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:03:04,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:03:04,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 538 transitions. [2021-12-16 03:03:04,134 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.867741935483871 [2021-12-16 03:03:04,134 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 538 transitions. [2021-12-16 03:03:04,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 538 transitions. [2021-12-16 03:03:04,135 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:04,135 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 538 transitions. [2021-12-16 03:03:04,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.6) internal successors, (538), 5 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:04,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:04,136 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:04,136 INFO L186 Difference]: Start difference. First operand has 320 places, 402 transitions, 11228 flow. Second operand 5 states and 538 transitions. [2021-12-16 03:03:04,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 416 transitions, 11985 flow [2021-12-16 03:03:04,476 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 416 transitions, 11950 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-16 03:03:04,485 INFO L242 Difference]: Finished difference. Result has 323 places, 403 transitions, 11379 flow [2021-12-16 03:03:04,485 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11162, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=344, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11379, PETRI_PLACES=323, PETRI_TRANSITIONS=403} [2021-12-16 03:03:04,485 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 211 predicate places. [2021-12-16 03:03:04,486 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 403 transitions, 11379 flow [2021-12-16 03:03:04,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:04,486 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:04,486 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:04,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-16 03:03:04,486 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:04,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:04,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1666971191, now seen corresponding path program 8 times [2021-12-16 03:03:04,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:04,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501465993] [2021-12-16 03:03:04,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:04,487 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:04,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:04,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:04,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501465993] [2021-12-16 03:03:04,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501465993] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:04,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:04,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:03:04,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172898478] [2021-12-16 03:03:04,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:04,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:03:04,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:04,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:03:04,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:03:04,535 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:03:04,536 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 403 transitions, 11379 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:04,536 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:04,536 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:03:04,536 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:05,324 INFO L129 PetriNetUnfolder]: 679/4965 cut-off events. [2021-12-16 03:03:05,324 INFO L130 PetriNetUnfolder]: For 70499/70774 co-relation queries the response was YES. [2021-12-16 03:03:05,380 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18788 conditions, 4965 events. 679/4965 cut-off events. For 70499/70774 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 58429 event pairs, 162 based on Foata normal form. 63/4813 useless extension candidates. Maximal degree in co-relation 17573. Up to 464 conditions per place. [2021-12-16 03:03:05,393 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 246 selfloop transitions, 91 changer transitions 0/429 dead transitions. [2021-12-16 03:03:05,394 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 429 transitions, 12511 flow [2021-12-16 03:03:05,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:03:05,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:03:05,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2021-12-16 03:03:05,395 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2021-12-16 03:03:05,395 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2021-12-16 03:03:05,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2021-12-16 03:03:05,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:05,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2021-12-16 03:03:05,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:05,396 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:05,396 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:05,396 INFO L186 Difference]: Start difference. First operand has 323 places, 403 transitions, 11379 flow. Second operand 5 states and 551 transitions. [2021-12-16 03:03:05,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 429 transitions, 12511 flow [2021-12-16 03:03:05,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 429 transitions, 12499 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-16 03:03:05,762 INFO L242 Difference]: Finished difference. Result has 327 places, 407 transitions, 11735 flow [2021-12-16 03:03:05,762 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11316, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=402, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11735, PETRI_PLACES=327, PETRI_TRANSITIONS=407} [2021-12-16 03:03:05,762 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 215 predicate places. [2021-12-16 03:03:05,762 INFO L470 AbstractCegarLoop]: Abstraction has has 327 places, 407 transitions, 11735 flow [2021-12-16 03:03:05,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:05,763 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:05,763 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:05,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-16 03:03:05,763 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:05,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:05,763 INFO L85 PathProgramCache]: Analyzing trace with hash -364617669, now seen corresponding path program 9 times [2021-12-16 03:03:05,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:05,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85368178] [2021-12-16 03:03:05,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:05,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:05,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:05,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:05,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85368178] [2021-12-16 03:03:05,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85368178] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:05,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:05,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:03:05,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292004428] [2021-12-16 03:03:05,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:05,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:03:05,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:05,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:03:05,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:03:05,815 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:03:05,815 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 407 transitions, 11735 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:05,816 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:05,816 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:03:05,816 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:06,656 INFO L129 PetriNetUnfolder]: 668/4905 cut-off events. [2021-12-16 03:03:06,656 INFO L130 PetriNetUnfolder]: For 74746/75005 co-relation queries the response was YES. [2021-12-16 03:03:06,714 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18877 conditions, 4905 events. 668/4905 cut-off events. For 74746/75005 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 57869 event pairs, 181 based on Foata normal form. 60/4751 useless extension candidates. Maximal degree in co-relation 17661. Up to 453 conditions per place. [2021-12-16 03:03:06,729 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 246 selfloop transitions, 90 changer transitions 0/428 dead transitions. [2021-12-16 03:03:06,729 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 331 places, 428 transitions, 12746 flow [2021-12-16 03:03:06,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:03:06,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:03:06,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 546 transitions. [2021-12-16 03:03:06,730 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8806451612903226 [2021-12-16 03:03:06,731 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 546 transitions. [2021-12-16 03:03:06,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 546 transitions. [2021-12-16 03:03:06,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:06,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 546 transitions. [2021-12-16 03:03:06,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.2) internal successors, (546), 5 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:06,732 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:06,732 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:06,732 INFO L186 Difference]: Start difference. First operand has 327 places, 407 transitions, 11735 flow. Second operand 5 states and 546 transitions. [2021-12-16 03:03:06,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 331 places, 428 transitions, 12746 flow [2021-12-16 03:03:07,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 428 transitions, 12631 flow, removed 8 selfloop flow, removed 3 redundant places. [2021-12-16 03:03:07,141 INFO L242 Difference]: Finished difference. Result has 329 places, 409 transitions, 11979 flow [2021-12-16 03:03:07,142 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11588, PETRI_DIFFERENCE_MINUEND_PLACES=324, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=11979, PETRI_PLACES=329, PETRI_TRANSITIONS=409} [2021-12-16 03:03:07,142 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 217 predicate places. [2021-12-16 03:03:07,142 INFO L470 AbstractCegarLoop]: Abstraction has has 329 places, 409 transitions, 11979 flow [2021-12-16 03:03:07,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:07,142 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:07,142 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:07,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-16 03:03:07,143 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:07,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:07,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1164396687, now seen corresponding path program 11 times [2021-12-16 03:03:07,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:07,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367344651] [2021-12-16 03:03:07,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:07,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:07,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:07,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:07,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:07,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367344651] [2021-12-16 03:03:07,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367344651] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:07,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:07,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:03:07,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860378274] [2021-12-16 03:03:07,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:07,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:03:07,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:07,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:03:07,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:03:07,202 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:03:07,203 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 409 transitions, 11979 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:07,203 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:07,203 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:03:07,203 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:08,015 INFO L129 PetriNetUnfolder]: 691/5137 cut-off events. [2021-12-16 03:03:08,015 INFO L130 PetriNetUnfolder]: For 76240/76517 co-relation queries the response was YES. [2021-12-16 03:03:08,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19538 conditions, 5137 events. 691/5137 cut-off events. For 76240/76517 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 61250 event pairs, 170 based on Foata normal form. 65/4981 useless extension candidates. Maximal degree in co-relation 18320. Up to 480 conditions per place. [2021-12-16 03:03:08,083 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 249 selfloop transitions, 90 changer transitions 1/432 dead transitions. [2021-12-16 03:03:08,083 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 432 transitions, 12962 flow [2021-12-16 03:03:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:03:08,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:03:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2021-12-16 03:03:08,084 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2021-12-16 03:03:08,084 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2021-12-16 03:03:08,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2021-12-16 03:03:08,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:08,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2021-12-16 03:03:08,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:08,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:08,086 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:08,086 INFO L186 Difference]: Start difference. First operand has 329 places, 409 transitions, 11979 flow. Second operand 5 states and 551 transitions. [2021-12-16 03:03:08,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 432 transitions, 12962 flow [2021-12-16 03:03:08,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 432 transitions, 12910 flow, removed 6 selfloop flow, removed 1 redundant places. [2021-12-16 03:03:08,484 INFO L242 Difference]: Finished difference. Result has 333 places, 410 transitions, 12172 flow [2021-12-16 03:03:08,485 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11866, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12172, PETRI_PLACES=333, PETRI_TRANSITIONS=410} [2021-12-16 03:03:08,485 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 221 predicate places. [2021-12-16 03:03:08,485 INFO L470 AbstractCegarLoop]: Abstraction has has 333 places, 410 transitions, 12172 flow [2021-12-16 03:03:08,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:08,485 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:08,486 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:08,486 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-16 03:03:08,486 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:08,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:08,486 INFO L85 PathProgramCache]: Analyzing trace with hash -175610253, now seen corresponding path program 10 times [2021-12-16 03:03:08,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:08,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270459732] [2021-12-16 03:03:08,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:08,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:08,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:08,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270459732] [2021-12-16 03:03:08,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270459732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:08,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:08,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:03:08,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363226001] [2021-12-16 03:03:08,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:08,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:03:08,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:08,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:03:08,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:03:08,550 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:03:08,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 410 transitions, 12172 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:08,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:08,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:03:08,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:09,410 INFO L129 PetriNetUnfolder]: 708/5237 cut-off events. [2021-12-16 03:03:09,411 INFO L130 PetriNetUnfolder]: For 80106/80367 co-relation queries the response was YES. [2021-12-16 03:03:09,469 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20157 conditions, 5237 events. 708/5237 cut-off events. For 80106/80367 co-relation queries the response was YES. Maximal size of possible extension queue 419. Compared 62484 event pairs, 210 based on Foata normal form. 62/5068 useless extension candidates. Maximal degree in co-relation 19099. Up to 495 conditions per place. [2021-12-16 03:03:09,483 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 261 selfloop transitions, 78 changer transitions 0/431 dead transitions. [2021-12-16 03:03:09,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 431 transitions, 13180 flow [2021-12-16 03:03:09,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:03:09,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:03:09,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 548 transitions. [2021-12-16 03:03:09,485 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8838709677419355 [2021-12-16 03:03:09,485 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 548 transitions. [2021-12-16 03:03:09,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 548 transitions. [2021-12-16 03:03:09,485 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:09,485 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 548 transitions. [2021-12-16 03:03:09,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:09,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:09,486 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:09,486 INFO L186 Difference]: Start difference. First operand has 333 places, 410 transitions, 12172 flow. Second operand 5 states and 548 transitions. [2021-12-16 03:03:09,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 431 transitions, 13180 flow [2021-12-16 03:03:09,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 431 transitions, 13045 flow, removed 10 selfloop flow, removed 4 redundant places. [2021-12-16 03:03:09,937 INFO L242 Difference]: Finished difference. Result has 335 places, 411 transitions, 12402 flow [2021-12-16 03:03:09,937 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=11908, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=407, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12402, PETRI_PLACES=335, PETRI_TRANSITIONS=411} [2021-12-16 03:03:09,938 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 223 predicate places. [2021-12-16 03:03:09,938 INFO L470 AbstractCegarLoop]: Abstraction has has 335 places, 411 transitions, 12402 flow [2021-12-16 03:03:09,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:09,938 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:09,938 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:09,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-16 03:03:09,938 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:09,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:09,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1902313787, now seen corresponding path program 10 times [2021-12-16 03:03:09,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:09,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116380665] [2021-12-16 03:03:09,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:09,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:09,998 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:09,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116380665] [2021-12-16 03:03:09,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116380665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:09,999 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:09,999 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:03:09,999 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447037653] [2021-12-16 03:03:09,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:09,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:03:09,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:09,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:03:09,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:03:10,000 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:03:10,000 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 411 transitions, 12402 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:10,000 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:10,000 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:03:10,000 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:11,017 INFO L129 PetriNetUnfolder]: 741/5495 cut-off events. [2021-12-16 03:03:11,018 INFO L130 PetriNetUnfolder]: For 83461/83730 co-relation queries the response was YES. [2021-12-16 03:03:11,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20785 conditions, 5495 events. 741/5495 cut-off events. For 83461/83730 co-relation queries the response was YES. Maximal size of possible extension queue 447. Compared 66461 event pairs, 223 based on Foata normal form. 65/5317 useless extension candidates. Maximal degree in co-relation 19720. Up to 530 conditions per place. [2021-12-16 03:03:11,077 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 259 selfloop transitions, 80 changer transitions 0/431 dead transitions. [2021-12-16 03:03:11,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 431 transitions, 13300 flow [2021-12-16 03:03:11,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:03:11,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:03:11,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 547 transitions. [2021-12-16 03:03:11,078 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.882258064516129 [2021-12-16 03:03:11,078 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 547 transitions. [2021-12-16 03:03:11,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 547 transitions. [2021-12-16 03:03:11,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:11,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 547 transitions. [2021-12-16 03:03:11,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 109.4) internal successors, (547), 5 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:11,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:11,079 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:11,079 INFO L186 Difference]: Start difference. First operand has 335 places, 411 transitions, 12402 flow. Second operand 5 states and 547 transitions. [2021-12-16 03:03:11,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 339 places, 431 transitions, 13300 flow [2021-12-16 03:03:11,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 431 transitions, 13252 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-12-16 03:03:11,493 INFO L242 Difference]: Finished difference. Result has 338 places, 411 transitions, 12534 flow [2021-12-16 03:03:11,494 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12354, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=411, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12534, PETRI_PLACES=338, PETRI_TRANSITIONS=411} [2021-12-16 03:03:11,494 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 226 predicate places. [2021-12-16 03:03:11,494 INFO L470 AbstractCegarLoop]: Abstraction has has 338 places, 411 transitions, 12534 flow [2021-12-16 03:03:11,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:11,495 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:11,495 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:11,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-16 03:03:11,495 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:11,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:11,495 INFO L85 PathProgramCache]: Analyzing trace with hash -326226985, now seen corresponding path program 11 times [2021-12-16 03:03:11,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:11,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1715287568] [2021-12-16 03:03:11,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:11,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:11,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:11,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:11,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:11,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1715287568] [2021-12-16 03:03:11,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1715287568] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:11,543 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:11,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:03:11,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275885076] [2021-12-16 03:03:11,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:11,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:03:11,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:11,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:03:11,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:03:11,545 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:03:11,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 411 transitions, 12534 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:11,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:11,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:03:11,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:12,449 INFO L129 PetriNetUnfolder]: 719/5339 cut-off events. [2021-12-16 03:03:12,449 INFO L130 PetriNetUnfolder]: For 82305/82550 co-relation queries the response was YES. [2021-12-16 03:03:12,512 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20636 conditions, 5339 events. 719/5339 cut-off events. For 82305/82550 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 64263 event pairs, 211 based on Foata normal form. 60/5157 useless extension candidates. Maximal degree in co-relation 19571. Up to 509 conditions per place. [2021-12-16 03:03:12,529 INFO L132 encePairwiseOnDemand]: 113/124 looper letters, 260 selfloop transitions, 78 changer transitions 0/430 dead transitions. [2021-12-16 03:03:12,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 430 transitions, 13372 flow [2021-12-16 03:03:12,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:03:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:03:12,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 550 transitions. [2021-12-16 03:03:12,531 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8870967741935484 [2021-12-16 03:03:12,531 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 550 transitions. [2021-12-16 03:03:12,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 550 transitions. [2021-12-16 03:03:12,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:12,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 550 transitions. [2021-12-16 03:03:12,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.0) internal successors, (550), 5 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:12,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:12,533 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:12,533 INFO L186 Difference]: Start difference. First operand has 338 places, 411 transitions, 12534 flow. Second operand 5 states and 550 transitions. [2021-12-16 03:03:12,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 430 transitions, 13372 flow [2021-12-16 03:03:13,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 430 transitions, 13349 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-12-16 03:03:13,019 INFO L242 Difference]: Finished difference. Result has 342 places, 411 transitions, 12690 flow [2021-12-16 03:03:13,019 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12453, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12690, PETRI_PLACES=342, PETRI_TRANSITIONS=411} [2021-12-16 03:03:13,020 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 230 predicate places. [2021-12-16 03:03:13,020 INFO L470 AbstractCegarLoop]: Abstraction has has 342 places, 411 transitions, 12690 flow [2021-12-16 03:03:13,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:13,020 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:13,020 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:13,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-16 03:03:13,020 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:13,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:13,021 INFO L85 PathProgramCache]: Analyzing trace with hash -57711313, now seen corresponding path program 12 times [2021-12-16 03:03:13,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:13,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543749127] [2021-12-16 03:03:13,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:13,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:13,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:13,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:13,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543749127] [2021-12-16 03:03:13,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543749127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:13,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:13,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:03:13,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70000111] [2021-12-16 03:03:13,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:13,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:03:13,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:13,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:03:13,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:03:13,072 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:03:13,073 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 411 transitions, 12690 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:13,073 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:13,073 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:03:13,073 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:14,020 INFO L129 PetriNetUnfolder]: 726/5306 cut-off events. [2021-12-16 03:03:14,020 INFO L130 PetriNetUnfolder]: For 82413/82666 co-relation queries the response was YES. [2021-12-16 03:03:14,076 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20746 conditions, 5306 events. 726/5306 cut-off events. For 82413/82666 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 63739 event pairs, 184 based on Foata normal form. 62/5137 useless extension candidates. Maximal degree in co-relation 19680. Up to 516 conditions per place. [2021-12-16 03:03:14,091 INFO L132 encePairwiseOnDemand]: 114/124 looper letters, 237 selfloop transitions, 104 changer transitions 2/435 dead transitions. [2021-12-16 03:03:14,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 435 transitions, 13642 flow [2021-12-16 03:03:14,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:03:14,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-16 03:03:14,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 750 transitions. [2021-12-16 03:03:14,092 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8640552995391705 [2021-12-16 03:03:14,093 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 750 transitions. [2021-12-16 03:03:14,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 750 transitions. [2021-12-16 03:03:14,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:14,093 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 750 transitions. [2021-12-16 03:03:14,093 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 107.14285714285714) internal successors, (750), 7 states have internal predecessors, (750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:14,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:14,094 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:14,094 INFO L186 Difference]: Start difference. First operand has 342 places, 411 transitions, 12690 flow. Second operand 7 states and 750 transitions. [2021-12-16 03:03:14,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 435 transitions, 13642 flow [2021-12-16 03:03:14,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 435 transitions, 13544 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-16 03:03:14,636 INFO L242 Difference]: Finished difference. Result has 346 places, 409 transitions, 12715 flow [2021-12-16 03:03:14,636 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12535, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=12715, PETRI_PLACES=346, PETRI_TRANSITIONS=409} [2021-12-16 03:03:14,637 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 234 predicate places. [2021-12-16 03:03:14,637 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 409 transitions, 12715 flow [2021-12-16 03:03:14,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:14,637 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:14,637 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:14,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-16 03:03:14,637 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:14,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:14,637 INFO L85 PathProgramCache]: Analyzing trace with hash -199781137, now seen corresponding path program 11 times [2021-12-16 03:03:14,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:14,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401398324] [2021-12-16 03:03:14,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:14,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:14,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:14,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:14,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:14,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401398324] [2021-12-16 03:03:14,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401398324] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:14,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:14,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:03:14,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097467600] [2021-12-16 03:03:14,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:14,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:03:14,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:14,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:03:14,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:03:14,692 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 124 [2021-12-16 03:03:14,692 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 409 transitions, 12715 flow. Second operand has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:14,692 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:14,692 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 124 [2021-12-16 03:03:14,693 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:15,648 INFO L129 PetriNetUnfolder]: 744/5508 cut-off events. [2021-12-16 03:03:15,648 INFO L130 PetriNetUnfolder]: For 86115/86400 co-relation queries the response was YES. [2021-12-16 03:03:15,717 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21365 conditions, 5508 events. 744/5508 cut-off events. For 86115/86400 co-relation queries the response was YES. Maximal size of possible extension queue 450. Compared 66786 event pairs, 215 based on Foata normal form. 66/5319 useless extension candidates. Maximal degree in co-relation 20299. Up to 523 conditions per place. [2021-12-16 03:03:15,733 INFO L132 encePairwiseOnDemand]: 112/124 looper letters, 259 selfloop transitions, 82 changer transitions 1/434 dead transitions. [2021-12-16 03:03:15,733 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 434 transitions, 13892 flow [2021-12-16 03:03:15,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:03:15,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-12-16 03:03:15,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 551 transitions. [2021-12-16 03:03:15,734 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8887096774193548 [2021-12-16 03:03:15,734 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 551 transitions. [2021-12-16 03:03:15,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 551 transitions. [2021-12-16 03:03:15,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:15,735 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 551 transitions. [2021-12-16 03:03:15,735 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:15,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:15,736 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:15,736 INFO L186 Difference]: Start difference. First operand has 346 places, 409 transitions, 12715 flow. Second operand 5 states and 551 transitions. [2021-12-16 03:03:15,736 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 434 transitions, 13892 flow [2021-12-16 03:03:16,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 434 transitions, 13828 flow, removed 4 selfloop flow, removed 2 redundant places. [2021-12-16 03:03:16,244 INFO L242 Difference]: Finished difference. Result has 349 places, 412 transitions, 12959 flow [2021-12-16 03:03:16,244 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12586, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=408, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=329, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=12959, PETRI_PLACES=349, PETRI_TRANSITIONS=412} [2021-12-16 03:03:16,245 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 237 predicate places. [2021-12-16 03:03:16,245 INFO L470 AbstractCegarLoop]: Abstraction has has 349 places, 412 transitions, 12959 flow [2021-12-16 03:03:16,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.2) internal successors, (501), 5 states have internal predecessors, (501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:16,245 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:16,245 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:16,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-16 03:03:16,245 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:16,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:16,246 INFO L85 PathProgramCache]: Analyzing trace with hash 49678226, now seen corresponding path program 1 times [2021-12-16 03:03:16,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:16,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320055131] [2021-12-16 03:03:16,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:16,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:16,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:16,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:16,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320055131] [2021-12-16 03:03:16,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320055131] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:16,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:16,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 03:03:16,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806124659] [2021-12-16 03:03:16,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:16,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 03:03:16,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:16,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 03:03:16,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:03:16,313 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-16 03:03:16,314 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 412 transitions, 12959 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:16,314 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:16,314 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-16 03:03:16,314 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:19,198 INFO L129 PetriNetUnfolder]: 4643/13114 cut-off events. [2021-12-16 03:03:19,199 INFO L130 PetriNetUnfolder]: For 65940/74914 co-relation queries the response was YES. [2021-12-16 03:03:19,337 INFO L84 FinitePrefix]: Finished finitePrefix Result has 36721 conditions, 13114 events. 4643/13114 cut-off events. For 65940/74914 co-relation queries the response was YES. Maximal size of possible extension queue 1871. Compared 160980 event pairs, 2404 based on Foata normal form. 65/12346 useless extension candidates. Maximal degree in co-relation 33917. Up to 5962 conditions per place. [2021-12-16 03:03:19,373 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 90 selfloop transitions, 32 changer transitions 28/522 dead transitions. [2021-12-16 03:03:19,374 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 522 transitions, 13611 flow [2021-12-16 03:03:19,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 03:03:19,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-16 03:03:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2271 transitions. [2021-12-16 03:03:19,376 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631048387096774 [2021-12-16 03:03:19,376 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2271 transitions. [2021-12-16 03:03:19,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2271 transitions. [2021-12-16 03:03:19,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:19,376 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2271 transitions. [2021-12-16 03:03:19,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.625) internal successors, (2271), 24 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:19,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:19,381 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:19,381 INFO L186 Difference]: Start difference. First operand has 349 places, 412 transitions, 12959 flow. Second operand 24 states and 2271 transitions. [2021-12-16 03:03:19,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 522 transitions, 13611 flow [2021-12-16 03:03:19,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 522 transitions, 13499 flow, removed 7 selfloop flow, removed 2 redundant places. [2021-12-16 03:03:19,731 INFO L242 Difference]: Finished difference. Result has 388 places, 443 transitions, 13118 flow [2021-12-16 03:03:19,731 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=12847, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=13118, PETRI_PLACES=388, PETRI_TRANSITIONS=443} [2021-12-16 03:03:19,731 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 276 predicate places. [2021-12-16 03:03:19,731 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 443 transitions, 13118 flow [2021-12-16 03:03:19,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:19,732 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:19,732 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:19,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-16 03:03:19,732 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:19,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:19,733 INFO L85 PathProgramCache]: Analyzing trace with hash 997352654, now seen corresponding path program 1 times [2021-12-16 03:03:19,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:19,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622693953] [2021-12-16 03:03:19,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:19,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:19,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:19,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:19,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622693953] [2021-12-16 03:03:19,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622693953] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:19,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:19,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 03:03:19,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561268945] [2021-12-16 03:03:19,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:19,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 03:03:19,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:19,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 03:03:19,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:03:19,795 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-16 03:03:19,795 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 443 transitions, 13118 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:19,795 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:19,796 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-16 03:03:19,796 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:23,031 INFO L129 PetriNetUnfolder]: 4735/13228 cut-off events. [2021-12-16 03:03:23,032 INFO L130 PetriNetUnfolder]: For 80812/89719 co-relation queries the response was YES. [2021-12-16 03:03:23,195 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47825 conditions, 13228 events. 4735/13228 cut-off events. For 80812/89719 co-relation queries the response was YES. Maximal size of possible extension queue 1918. Compared 162391 event pairs, 2912 based on Foata normal form. 45/12369 useless extension candidates. Maximal degree in co-relation 47484. Up to 7335 conditions per place. [2021-12-16 03:03:23,236 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 116 selfloop transitions, 32 changer transitions 28/548 dead transitions. [2021-12-16 03:03:23,236 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 548 transitions, 14025 flow [2021-12-16 03:03:23,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 03:03:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-12-16 03:03:23,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2271 transitions. [2021-12-16 03:03:23,238 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631048387096774 [2021-12-16 03:03:23,238 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2271 transitions. [2021-12-16 03:03:23,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2271 transitions. [2021-12-16 03:03:23,238 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:23,238 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2271 transitions. [2021-12-16 03:03:23,240 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 94.625) internal successors, (2271), 24 states have internal predecessors, (2271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:23,242 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:23,242 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 124.0) internal successors, (3100), 25 states have internal predecessors, (3100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:23,242 INFO L186 Difference]: Start difference. First operand has 388 places, 443 transitions, 13118 flow. Second operand 24 states and 2271 transitions. [2021-12-16 03:03:23,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 548 transitions, 14025 flow [2021-12-16 03:03:23,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 548 transitions, 13987 flow, removed 19 selfloop flow, removed 2 redundant places. [2021-12-16 03:03:23,779 INFO L242 Difference]: Finished difference. Result has 425 places, 469 transitions, 13414 flow [2021-12-16 03:03:23,780 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=13086, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=13414, PETRI_PLACES=425, PETRI_TRANSITIONS=469} [2021-12-16 03:03:23,780 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 313 predicate places. [2021-12-16 03:03:23,780 INFO L470 AbstractCegarLoop]: Abstraction has has 425 places, 469 transitions, 13414 flow [2021-12-16 03:03:23,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:23,781 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:23,781 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:23,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-16 03:03:23,781 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:23,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:23,781 INFO L85 PathProgramCache]: Analyzing trace with hash -582767224, now seen corresponding path program 2 times [2021-12-16 03:03:23,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:23,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035194048] [2021-12-16 03:03:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:23,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:23,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:23,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:23,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:23,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035194048] [2021-12-16 03:03:23,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035194048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:23,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:23,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 03:03:23,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379528045] [2021-12-16 03:03:23,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:23,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 03:03:23,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:23,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 03:03:23,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:03:23,855 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-16 03:03:23,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 469 transitions, 13414 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:23,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:23,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-16 03:03:23,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-16 03:03:27,286 INFO L129 PetriNetUnfolder]: 4877/13683 cut-off events. [2021-12-16 03:03:27,286 INFO L130 PetriNetUnfolder]: For 117455/126358 co-relation queries the response was YES. [2021-12-16 03:03:27,522 INFO L84 FinitePrefix]: Finished finitePrefix Result has 58156 conditions, 13683 events. 4877/13683 cut-off events. For 117455/126358 co-relation queries the response was YES. Maximal size of possible extension queue 1991. Compared 168188 event pairs, 3052 based on Foata normal form. 20/12791 useless extension candidates. Maximal degree in co-relation 57798. Up to 7875 conditions per place. [2021-12-16 03:03:27,574 INFO L132 encePairwiseOnDemand]: 111/124 looper letters, 126 selfloop transitions, 36 changer transitions 16/550 dead transitions. [2021-12-16 03:03:27,574 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 550 transitions, 14394 flow [2021-12-16 03:03:27,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-16 03:03:27,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-12-16 03:03:27,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1521 transitions. [2021-12-16 03:03:27,576 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.766633064516129 [2021-12-16 03:03:27,576 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1521 transitions. [2021-12-16 03:03:27,576 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1521 transitions. [2021-12-16 03:03:27,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-16 03:03:27,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1521 transitions. [2021-12-16 03:03:27,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 95.0625) internal successors, (1521), 16 states have internal predecessors, (1521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:27,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:27,579 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 124.0) internal successors, (2108), 17 states have internal predecessors, (2108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:27,579 INFO L186 Difference]: Start difference. First operand has 425 places, 469 transitions, 13414 flow. Second operand 16 states and 1521 transitions. [2021-12-16 03:03:27,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 550 transitions, 14394 flow [2021-12-16 03:03:29,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 550 transitions, 14199 flow, removed 90 selfloop flow, removed 5 redundant places. [2021-12-16 03:03:29,176 INFO L242 Difference]: Finished difference. Result has 444 places, 493 transitions, 13734 flow [2021-12-16 03:03:29,177 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=13268, PETRI_DIFFERENCE_MINUEND_PLACES=418, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=469, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=13734, PETRI_PLACES=444, PETRI_TRANSITIONS=493} [2021-12-16 03:03:29,177 INFO L334 CegarLoopForPetriNet]: 112 programPoint places, 332 predicate places. [2021-12-16 03:03:29,177 INFO L470 AbstractCegarLoop]: Abstraction has has 444 places, 493 transitions, 13734 flow [2021-12-16 03:03:29,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:29,177 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-16 03:03:29,177 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:03:29,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-16 03:03:29,178 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-16 03:03:29,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:03:29,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1720622684, now seen corresponding path program 3 times [2021-12-16 03:03:29,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:03:29,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220179600] [2021-12-16 03:03:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:03:29,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:03:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:03:29,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 03:03:29,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:03:29,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220179600] [2021-12-16 03:03:29,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220179600] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:03:29,249 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:03:29,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-16 03:03:29,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230009161] [2021-12-16 03:03:29,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:03:29,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 03:03:29,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:03:29,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 03:03:29,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:03:29,251 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 124 [2021-12-16 03:03:29,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 493 transitions, 13734 flow. Second operand has 10 states, 10 states have (on average 91.6) internal successors, (916), 10 states have internal predecessors, (916), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 03:03:29,252 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-16 03:03:29,252 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 124 [2021-12-16 03:03:29,252 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand