./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-simpl-str-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 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:27:07,191 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:27:07,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:27:07,229 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:27:07,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:27:07,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:27:07,232 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:27:07,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:27:07,235 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:27:07,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:27:07,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:27:07,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:27:07,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:27:07,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:27:07,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:27:07,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:27:07,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:27:07,247 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:27:07,248 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:27:07,252 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:27:07,254 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:27:07,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:27:07,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:27:07,256 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:27:07,257 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:27:07,262 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:27:07,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:27:07,263 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:27:07,264 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:27:07,264 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:27:07,265 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:27:07,265 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:27:07,266 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:27:07,267 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:27:07,267 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:27:07,268 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:27:07,268 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:27:07,269 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:27:07,269 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:27:07,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:27:07,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:27:07,271 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:27:07,272 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:27:07,294 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:27:07,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:27:07,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:27:07,296 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:27:07,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:27:07,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:27:07,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:27:07,297 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:27:07,297 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:27:07,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:27:07,298 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:27:07,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:27:07,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:27:07,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:27:07,299 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:27:07,299 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:27:07,299 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:27:07,299 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:27:07,300 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:27:07,301 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:27:07,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:27:07,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:27:07,301 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:27:07,301 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:27:07,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:27:07,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:27:07,302 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:27:07,302 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:27:07,302 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:27:07,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:27:07,303 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:27:07,303 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:27:07,303 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:27:07,303 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 761ee9f18ea63f4f821d50962d6c2d771ad2410f7c5dd57f48ec51463a1d5307 [2022-07-19 21:27:07,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:27:07,503 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:27:07,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:27:07,506 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:27:07,506 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:27:07,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-07-19 21:27:07,549 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b24fd380/b7d7f6ccd8884af7b0466e9485c26b50/FLAGfe1ab1bde [2022-07-19 21:27:07,874 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:27:07,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/chl-simpl-str-subst.wvr.c [2022-07-19 21:27:07,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b24fd380/b7d7f6ccd8884af7b0466e9485c26b50/FLAGfe1ab1bde [2022-07-19 21:27:07,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b24fd380/b7d7f6ccd8884af7b0466e9485c26b50 [2022-07-19 21:27:07,888 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:27:07,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:27:07,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:27:07,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:27:07,892 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:27:07,893 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:27:07" (1/1) ... [2022-07-19 21:27:07,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d01a096 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:07, skipping insertion in model container [2022-07-19 21:27:07,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:27:07" (1/1) ... [2022-07-19 21:27:07,898 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:27:07,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:27:08,065 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-simpl-str-subst.wvr.c[2575,2588] [2022-07-19 21:27:08,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:27:08,073 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:27:08,091 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-simpl-str-subst.wvr.c[2575,2588] [2022-07-19 21:27:08,093 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:27:08,104 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:27:08,104 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08 WrapperNode [2022-07-19 21:27:08,104 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:27:08,105 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:27:08,105 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:27:08,105 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:27:08,111 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,118 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,135 INFO L137 Inliner]: procedures = 23, calls = 31, calls flagged for inlining = 9, calls inlined = 13, statements flattened = 179 [2022-07-19 21:27:08,136 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:27:08,137 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:27:08,137 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:27:08,137 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:27:08,142 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,149 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:27:08,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:27:08,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:27:08,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:27:08,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (1/1) ... [2022-07-19 21:27:08,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:27:08,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:27:08,195 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:27:08,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:27:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:27:08,221 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:27:08,221 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:27:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:27:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:27:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-19 21:27:08,222 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-19 21:27:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:27:08,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:27:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:27:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:27:08,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:27:08,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:27:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:27:08,225 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:27:08,339 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:27:08,340 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:27:08,617 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:27:08,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:27:08,625 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:27:08,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:27:08 BoogieIcfgContainer [2022-07-19 21:27:08,627 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:27:08,629 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:27:08,629 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:27:08,632 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:27:08,632 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:27:07" (1/3) ... [2022-07-19 21:27:08,632 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40858a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:27:08, skipping insertion in model container [2022-07-19 21:27:08,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:27:08" (2/3) ... [2022-07-19 21:27:08,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40858a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:27:08, skipping insertion in model container [2022-07-19 21:27:08,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:27:08" (3/3) ... [2022-07-19 21:27:08,634 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-simpl-str-subst.wvr.c [2022-07-19 21:27:08,637 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:27:08,646 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:27:08,646 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:27:08,646 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:27:08,705 INFO L135 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-07-19 21:27:08,760 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 228 places, 235 transitions, 494 flow [2022-07-19 21:27:08,834 INFO L129 PetriNetUnfolder]: 17/232 cut-off events. [2022-07-19 21:27:08,835 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:27:08,843 INFO L84 FinitePrefix]: Finished finitePrefix Result has 245 conditions, 232 events. 17/232 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 510 event pairs, 0 based on Foata normal form. 0/214 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2022-07-19 21:27:08,843 INFO L82 GeneralOperation]: Start removeDead. Operand has 228 places, 235 transitions, 494 flow [2022-07-19 21:27:08,849 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 214 places, 221 transitions, 460 flow [2022-07-19 21:27:08,856 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:27:08,861 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@23b672af, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@585eb882 [2022-07-19 21:27:08,862 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-07-19 21:27:08,894 INFO L129 PetriNetUnfolder]: 17/220 cut-off events. [2022-07-19 21:27:08,894 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-07-19 21:27:08,894 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:08,895 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:08,896 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:08,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:08,906 INFO L85 PathProgramCache]: Analyzing trace with hash -1711885606, now seen corresponding path program 1 times [2022-07-19 21:27:08,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:08,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213302023] [2022-07-19 21:27:08,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:08,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:09,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:09,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:09,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:09,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213302023] [2022-07-19 21:27:09,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213302023] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:09,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:09,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:27:09,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941734512] [2022-07-19 21:27:09,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:09,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:27:09,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:09,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:27:09,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:27:09,284 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2022-07-19 21:27:09,289 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 221 transitions, 460 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,289 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:09,289 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2022-07-19 21:27:09,290 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:09,475 INFO L129 PetriNetUnfolder]: 84/1006 cut-off events. [2022-07-19 21:27:09,475 INFO L130 PetriNetUnfolder]: For 121/121 co-relation queries the response was YES. [2022-07-19 21:27:09,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1184 conditions, 1006 events. 84/1006 cut-off events. For 121/121 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7154 event pairs, 22 based on Foata normal form. 68/984 useless extension candidates. Maximal degree in co-relation 999. Up to 73 conditions per place. [2022-07-19 21:27:09,484 INFO L132 encePairwiseOnDemand]: 219/235 looper letters, 20 selfloop transitions, 4 changer transitions 2/221 dead transitions. [2022-07-19 21:27:09,484 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 221 transitions, 520 flow [2022-07-19 21:27:09,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:27:09,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:27:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 670 transitions. [2022-07-19 21:27:09,501 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.950354609929078 [2022-07-19 21:27:09,501 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 670 transitions. [2022-07-19 21:27:09,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 670 transitions. [2022-07-19 21:27:09,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:09,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 670 transitions. [2022-07-19 21:27:09,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 223.33333333333334) internal successors, (670), 3 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,519 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,521 INFO L186 Difference]: Start difference. First operand has 214 places, 221 transitions, 460 flow. Second operand 3 states and 670 transitions. [2022-07-19 21:27:09,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 221 transitions, 520 flow [2022-07-19 21:27:09,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 221 transitions, 500 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-19 21:27:09,534 INFO L242 Difference]: Finished difference. Result has 212 places, 215 transitions, 468 flow [2022-07-19 21:27:09,537 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=432, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=468, PETRI_PLACES=212, PETRI_TRANSITIONS=215} [2022-07-19 21:27:09,540 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -2 predicate places. [2022-07-19 21:27:09,541 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 215 transitions, 468 flow [2022-07-19 21:27:09,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,542 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:09,542 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:09,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:27:09,543 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:09,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:09,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1537026462, now seen corresponding path program 1 times [2022-07-19 21:27:09,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:09,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756481142] [2022-07-19 21:27:09,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:09,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:09,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:09,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:09,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756481142] [2022-07-19 21:27:09,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756481142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:09,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:09,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:27:09,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848868532] [2022-07-19 21:27:09,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:09,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:27:09,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:09,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:27:09,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:27:09,606 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2022-07-19 21:27:09,607 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 215 transitions, 468 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:09,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2022-07-19 21:27:09,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:09,853 INFO L382 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-19 21:27:09,854 INFO L384 tUnfolder$Statistics]: this new event has 123 ancestors and is cut-off event [2022-07-19 21:27:09,854 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-19 21:27:09,855 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-19 21:27:09,855 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-19 21:27:09,855 INFO L382 tUnfolder$Statistics]: inserting event number 5 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-19 21:27:09,855 INFO L384 tUnfolder$Statistics]: this new event has 123 ancestors and is cut-off event [2022-07-19 21:27:09,855 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-19 21:27:09,856 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-19 21:27:09,856 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is cut-off event [2022-07-19 21:27:09,856 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is cut-off event [2022-07-19 21:27:09,857 INFO L382 tUnfolder$Statistics]: inserting event number 6 for the transition-marking pair ([680] thread3EXIT-->L77-2: Formula: (and (= v_thread3Thread1of1ForFork0_thidvar0_4 (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem27#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296))))) (= v_thread3Thread1of1ForFork0_thidvar3_4 0) (= v_thread3Thread1of1ForFork0_thidvar1_4 0) (= v_thread3Thread1of1ForFork0_thidvar2_4 0)) InVars {thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} OutVars{thread3Thread1of1ForFork0_thidvar3=v_thread3Thread1of1ForFork0_thidvar3_4, thread3Thread1of1ForFork0_thidvar2=v_thread3Thread1of1ForFork0_thidvar2_4, thread3Thread1of1ForFork0_thidvar1=v_thread3Thread1of1ForFork0_thidvar1_4, thread3Thread1of1ForFork0_thidvar0=v_thread3Thread1of1ForFork0_thidvar0_4, ULTIMATE.start_main_#t~mem27#1=|v_ULTIMATE.start_main_#t~mem27#1_5|} AuxVars[] AssignedVars[][207], [233#(not (= ~length_4~0 0)), 138#L77-2true, Black: 231#true, 239#(not (= ~length_2~0 0))]) [2022-07-19 21:27:09,858 INFO L384 tUnfolder$Statistics]: this new event has 101 ancestors and is not cut-off event [2022-07-19 21:27:09,858 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is not cut-off event [2022-07-19 21:27:09,858 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-19 21:27:09,858 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-19 21:27:09,858 INFO L387 tUnfolder$Statistics]: existing Event has 101 ancestors and is not cut-off event [2022-07-19 21:27:09,858 INFO L387 tUnfolder$Statistics]: existing Event has 123 ancestors and is not cut-off event [2022-07-19 21:27:09,866 INFO L129 PetriNetUnfolder]: 96/2144 cut-off events. [2022-07-19 21:27:09,866 INFO L130 PetriNetUnfolder]: For 85/89 co-relation queries the response was YES. [2022-07-19 21:27:09,879 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2433 conditions, 2144 events. 96/2144 cut-off events. For 85/89 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 21163 event pairs, 28 based on Foata normal form. 0/1986 useless extension candidates. Maximal degree in co-relation 1296. Up to 89 conditions per place. [2022-07-19 21:27:09,886 INFO L132 encePairwiseOnDemand]: 229/235 looper letters, 19 selfloop transitions, 3 changer transitions 0/223 dead transitions. [2022-07-19 21:27:09,887 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 223 transitions, 533 flow [2022-07-19 21:27:09,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:27:09,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:27:09,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-07-19 21:27:09,889 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2022-07-19 21:27:09,890 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-07-19 21:27:09,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-07-19 21:27:09,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:09,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-07-19 21:27:09,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 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) [2022-07-19 21:27:09,893 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,894 INFO L186 Difference]: Start difference. First operand has 212 places, 215 transitions, 468 flow. Second operand 3 states and 661 transitions. [2022-07-19 21:27:09,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 223 transitions, 533 flow [2022-07-19 21:27:09,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 223 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:09,904 INFO L242 Difference]: Finished difference. Result has 213 places, 218 transitions, 494 flow [2022-07-19 21:27:09,905 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=215, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=494, PETRI_PLACES=213, PETRI_TRANSITIONS=218} [2022-07-19 21:27:09,906 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, -1 predicate places. [2022-07-19 21:27:09,906 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 218 transitions, 494 flow [2022-07-19 21:27:09,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:09,907 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:09,907 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:09,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:27:09,908 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:09,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:09,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1414919130, now seen corresponding path program 2 times [2022-07-19 21:27:09,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:09,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375001885] [2022-07-19 21:27:09,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:09,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:09,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:10,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:10,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:10,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375001885] [2022-07-19 21:27:10,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375001885] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:10,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:10,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:27:10,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303948325] [2022-07-19 21:27:10,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:10,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:27:10,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:10,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:27:10,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:27:10,009 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 235 [2022-07-19 21:27:10,009 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 218 transitions, 494 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:10,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 235 [2022-07-19 21:27:10,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:10,203 INFO L129 PetriNetUnfolder]: 80/1827 cut-off events. [2022-07-19 21:27:10,203 INFO L130 PetriNetUnfolder]: For 66/66 co-relation queries the response was YES. [2022-07-19 21:27:10,214 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2107 conditions, 1827 events. 80/1827 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 16400 event pairs, 28 based on Foata normal form. 7/1684 useless extension candidates. Maximal degree in co-relation 1309. Up to 78 conditions per place. [2022-07-19 21:27:10,220 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 20 selfloop transitions, 5 changer transitions 0/226 dead transitions. [2022-07-19 21:27:10,220 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 226 transitions, 571 flow [2022-07-19 21:27:10,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:27:10,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:27:10,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 661 transitions. [2022-07-19 21:27:10,222 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9375886524822695 [2022-07-19 21:27:10,222 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 661 transitions. [2022-07-19 21:27:10,222 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 661 transitions. [2022-07-19 21:27:10,223 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:10,223 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 661 transitions. [2022-07-19 21:27:10,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 220.33333333333334) internal successors, (661), 3 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) [2022-07-19 21:27:10,225 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,226 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,226 INFO L186 Difference]: Start difference. First operand has 213 places, 218 transitions, 494 flow. Second operand 3 states and 661 transitions. [2022-07-19 21:27:10,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 226 transitions, 571 flow [2022-07-19 21:27:10,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 226 transitions, 568 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:10,230 INFO L242 Difference]: Finished difference. Result has 216 places, 221 transitions, 535 flow [2022-07-19 21:27:10,230 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=535, PETRI_PLACES=216, PETRI_TRANSITIONS=221} [2022-07-19 21:27:10,232 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 2 predicate places. [2022-07-19 21:27:10,232 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 221 transitions, 535 flow [2022-07-19 21:27:10,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,233 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:10,233 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:10,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:27:10,234 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:10,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:10,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1873849952, now seen corresponding path program 1 times [2022-07-19 21:27:10,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:10,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220830410] [2022-07-19 21:27:10,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:10,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:10,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:10,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:10,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:10,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220830410] [2022-07-19 21:27:10,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220830410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:10,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:10,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:27:10,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245522474] [2022-07-19 21:27:10,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:10,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:27:10,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:10,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:27:10,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:27:10,338 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2022-07-19 21:27:10,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 221 transitions, 535 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:10,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2022-07-19 21:27:10,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:10,613 INFO L129 PetriNetUnfolder]: 96/3140 cut-off events. [2022-07-19 21:27:10,613 INFO L130 PetriNetUnfolder]: For 98/131 co-relation queries the response was YES. [2022-07-19 21:27:10,629 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3611 conditions, 3140 events. 96/3140 cut-off events. For 98/131 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 34386 event pairs, 33 based on Foata normal form. 0/2910 useless extension candidates. Maximal degree in co-relation 2319. Up to 121 conditions per place. [2022-07-19 21:27:10,637 INFO L132 encePairwiseOnDemand]: 231/235 looper letters, 17 selfloop transitions, 2 changer transitions 0/228 dead transitions. [2022-07-19 21:27:10,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 228 transitions, 592 flow [2022-07-19 21:27:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:27:10,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:27:10,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-07-19 21:27:10,642 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9404255319148936 [2022-07-19 21:27:10,642 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-07-19 21:27:10,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-07-19 21:27:10,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:10,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-07-19 21:27:10,643 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 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) [2022-07-19 21:27:10,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,645 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,645 INFO L186 Difference]: Start difference. First operand has 216 places, 221 transitions, 535 flow. Second operand 3 states and 663 transitions. [2022-07-19 21:27:10,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 228 transitions, 592 flow [2022-07-19 21:27:10,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 228 transitions, 576 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:10,651 INFO L242 Difference]: Finished difference. Result has 218 places, 223 transitions, 539 flow [2022-07-19 21:27:10,651 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=519, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=539, PETRI_PLACES=218, PETRI_TRANSITIONS=223} [2022-07-19 21:27:10,658 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 4 predicate places. [2022-07-19 21:27:10,658 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 223 transitions, 539 flow [2022-07-19 21:27:10,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,659 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:10,659 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:10,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:27:10,660 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:10,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:10,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1926563626, now seen corresponding path program 1 times [2022-07-19 21:27:10,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:10,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410394056] [2022-07-19 21:27:10,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:10,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:10,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:10,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:10,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410394056] [2022-07-19 21:27:10,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410394056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:10,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:10,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:27:10,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162685410] [2022-07-19 21:27:10,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:10,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:27:10,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:10,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:27:10,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:27:10,748 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 210 out of 235 [2022-07-19 21:27:10,750 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 223 transitions, 539 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:10,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 210 of 235 [2022-07-19 21:27:10,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:10,977 INFO L129 PetriNetUnfolder]: 130/2353 cut-off events. [2022-07-19 21:27:10,978 INFO L130 PetriNetUnfolder]: For 139/233 co-relation queries the response was YES. [2022-07-19 21:27:10,987 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2891 conditions, 2353 events. 130/2353 cut-off events. For 139/233 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21882 event pairs, 33 based on Foata normal form. 4/2183 useless extension candidates. Maximal degree in co-relation 1425. Up to 137 conditions per place. [2022-07-19 21:27:10,992 INFO L132 encePairwiseOnDemand]: 225/235 looper letters, 22 selfloop transitions, 6 changer transitions 0/231 dead transitions. [2022-07-19 21:27:10,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 231 transitions, 623 flow [2022-07-19 21:27:10,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:27:10,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:27:10,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2022-07-19 21:27:10,994 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9333333333333333 [2022-07-19 21:27:10,994 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2022-07-19 21:27:10,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2022-07-19 21:27:10,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:10,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2022-07-19 21:27:10,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,997 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:10,997 INFO L186 Difference]: Start difference. First operand has 218 places, 223 transitions, 539 flow. Second operand 3 states and 658 transitions. [2022-07-19 21:27:10,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 231 transitions, 623 flow [2022-07-19 21:27:10,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 231 transitions, 621 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-07-19 21:27:11,001 INFO L242 Difference]: Finished difference. Result has 221 places, 227 transitions, 593 flow [2022-07-19 21:27:11,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=537, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=221, PETRI_TRANSITIONS=227} [2022-07-19 21:27:11,002 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 7 predicate places. [2022-07-19 21:27:11,003 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 227 transitions, 593 flow [2022-07-19 21:27:11,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,003 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:11,003 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:11,004 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:27:11,004 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:11,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:11,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1437708392, now seen corresponding path program 1 times [2022-07-19 21:27:11,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:11,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803487588] [2022-07-19 21:27:11,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:11,005 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:11,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:11,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:11,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803487588] [2022-07-19 21:27:11,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [803487588] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:11,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:11,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:27:11,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099476718] [2022-07-19 21:27:11,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:11,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:27:11,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:11,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:27:11,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:27:11,108 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2022-07-19 21:27:11,109 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 227 transitions, 593 flow. Second operand has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,109 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:11,109 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2022-07-19 21:27:11,109 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:11,390 INFO L129 PetriNetUnfolder]: 114/2103 cut-off events. [2022-07-19 21:27:11,390 INFO L130 PetriNetUnfolder]: For 155/421 co-relation queries the response was YES. [2022-07-19 21:27:11,399 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2760 conditions, 2103 events. 114/2103 cut-off events. For 155/421 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 19801 event pairs, 40 based on Foata normal form. 5/1993 useless extension candidates. Maximal degree in co-relation 1946. Up to 199 conditions per place. [2022-07-19 21:27:11,403 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 21 selfloop transitions, 0 changer transitions 22/247 dead transitions. [2022-07-19 21:27:11,404 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 247 transitions, 730 flow [2022-07-19 21:27:11,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:27:11,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:27:11,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2022-07-19 21:27:11,407 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2022-07-19 21:27:11,407 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2022-07-19 21:27:11,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2022-07-19 21:27:11,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:11,409 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2022-07-19 21:27:11,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.77777777777777) internal successors, (1861), 9 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,415 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,415 INFO L186 Difference]: Start difference. First operand has 221 places, 227 transitions, 593 flow. Second operand 9 states and 1861 transitions. [2022-07-19 21:27:11,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 247 transitions, 730 flow [2022-07-19 21:27:11,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 247 transitions, 710 flow, removed 4 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:11,420 INFO L242 Difference]: Finished difference. Result has 234 places, 225 transitions, 579 flow [2022-07-19 21:27:11,420 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=579, PETRI_PLACES=234, PETRI_TRANSITIONS=225} [2022-07-19 21:27:11,421 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 20 predicate places. [2022-07-19 21:27:11,421 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 225 transitions, 579 flow [2022-07-19 21:27:11,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,422 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:11,422 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:11,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:27:11,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:11,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:11,423 INFO L85 PathProgramCache]: Analyzing trace with hash 169299696, now seen corresponding path program 1 times [2022-07-19 21:27:11,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:11,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990810292] [2022-07-19 21:27:11,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:11,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:11,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:11,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:11,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:11,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990810292] [2022-07-19 21:27:11,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990810292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:11,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:11,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:27:11,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132935224] [2022-07-19 21:27:11,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:11,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:27:11,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:11,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:27:11,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:27:11,451 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 235 [2022-07-19 21:27:11,451 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 225 transitions, 579 flow. Second operand has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,452 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:11,452 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 235 [2022-07-19 21:27:11,452 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:11,570 INFO L129 PetriNetUnfolder]: 46/1393 cut-off events. [2022-07-19 21:27:11,570 INFO L130 PetriNetUnfolder]: For 47/57 co-relation queries the response was YES. [2022-07-19 21:27:11,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 1393 events. 46/1393 cut-off events. For 47/57 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10719 event pairs, 7 based on Foata normal form. 0/1307 useless extension candidates. Maximal degree in co-relation 1706. Up to 45 conditions per place. [2022-07-19 21:27:11,586 INFO L132 encePairwiseOnDemand]: 229/235 looper letters, 17 selfloop transitions, 4 changer transitions 1/232 dead transitions. [2022-07-19 21:27:11,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 232 transitions, 644 flow [2022-07-19 21:27:11,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:27:11,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-07-19 21:27:11,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 663 transitions. [2022-07-19 21:27:11,588 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.9404255319148936 [2022-07-19 21:27:11,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 663 transitions. [2022-07-19 21:27:11,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 663 transitions. [2022-07-19 21:27:11,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:11,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 663 transitions. [2022-07-19 21:27:11,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.0) internal successors, (663), 3 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) [2022-07-19 21:27:11,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 235.0) internal successors, (940), 4 states have internal predecessors, (940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,591 INFO L186 Difference]: Start difference. First operand has 234 places, 225 transitions, 579 flow. Second operand 3 states and 663 transitions. [2022-07-19 21:27:11,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 232 transitions, 644 flow [2022-07-19 21:27:11,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 232 transitions, 630 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-07-19 21:27:11,600 INFO L242 Difference]: Finished difference. Result has 224 places, 226 transitions, 593 flow [2022-07-19 21:27:11,600 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=565, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=224, PETRI_TRANSITIONS=226} [2022-07-19 21:27:11,601 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 10 predicate places. [2022-07-19 21:27:11,601 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 226 transitions, 593 flow [2022-07-19 21:27:11,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 217.33333333333334) internal successors, (652), 3 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,602 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:11,602 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:11,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:27:11,602 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:11,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:11,603 INFO L85 PathProgramCache]: Analyzing trace with hash -68732316, now seen corresponding path program 1 times [2022-07-19 21:27:11,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:11,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553714349] [2022-07-19 21:27:11,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:11,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:11,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:11,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:11,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:11,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553714349] [2022-07-19 21:27:11,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553714349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:11,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:11,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:11,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066681169] [2022-07-19 21:27:11,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:11,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:11,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:11,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:11,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:11,744 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:11,745 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 226 transitions, 593 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:11,745 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:11,746 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:11,746 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:12,262 INFO L129 PetriNetUnfolder]: 913/3930 cut-off events. [2022-07-19 21:27:12,262 INFO L130 PetriNetUnfolder]: For 297/395 co-relation queries the response was YES. [2022-07-19 21:27:12,276 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6112 conditions, 3930 events. 913/3930 cut-off events. For 297/395 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 39116 event pairs, 592 based on Foata normal form. 2/3714 useless extension candidates. Maximal degree in co-relation 6102. Up to 1296 conditions per place. [2022-07-19 21:27:12,286 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 76 selfloop transitions, 30 changer transitions 28/330 dead transitions. [2022-07-19 21:27:12,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 330 transitions, 1102 flow [2022-07-19 21:27:12,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:27:12,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:27:12,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4791 transitions. [2022-07-19 21:27:12,294 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494680851063829 [2022-07-19 21:27:12,294 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4791 transitions. [2022-07-19 21:27:12,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4791 transitions. [2022-07-19 21:27:12,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:12,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4791 transitions. [2022-07-19 21:27:12,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.625) internal successors, (4791), 24 states have internal predecessors, (4791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,311 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,311 INFO L186 Difference]: Start difference. First operand has 224 places, 226 transitions, 593 flow. Second operand 24 states and 4791 transitions. [2022-07-19 21:27:12,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 330 transitions, 1102 flow [2022-07-19 21:27:12,313 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 330 transitions, 1090 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:12,316 INFO L242 Difference]: Finished difference. Result has 264 places, 255 transitions, 797 flow [2022-07-19 21:27:12,316 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=581, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=797, PETRI_PLACES=264, PETRI_TRANSITIONS=255} [2022-07-19 21:27:12,319 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 50 predicate places. [2022-07-19 21:27:12,319 INFO L495 AbstractCegarLoop]: Abstraction has has 264 places, 255 transitions, 797 flow [2022-07-19 21:27:12,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,320 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:12,321 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:12,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:27:12,321 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:12,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:12,321 INFO L85 PathProgramCache]: Analyzing trace with hash -1664128876, now seen corresponding path program 2 times [2022-07-19 21:27:12,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:12,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100878419] [2022-07-19 21:27:12,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:12,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:12,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:12,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:12,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100878419] [2022-07-19 21:27:12,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100878419] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:12,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:12,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:12,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527800729] [2022-07-19 21:27:12,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:12,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:12,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:12,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:12,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:12,430 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:12,431 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 255 transitions, 797 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:12,431 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:12,431 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:12,432 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:13,058 INFO L129 PetriNetUnfolder]: 1027/3970 cut-off events. [2022-07-19 21:27:13,058 INFO L130 PetriNetUnfolder]: For 3975/4061 co-relation queries the response was YES. [2022-07-19 21:27:13,083 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9765 conditions, 3970 events. 1027/3970 cut-off events. For 3975/4061 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 39317 event pairs, 641 based on Foata normal form. 2/3741 useless extension candidates. Maximal degree in co-relation 9735. Up to 1500 conditions per place. [2022-07-19 21:27:13,135 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 68 selfloop transitions, 45 changer transitions 19/328 dead transitions. [2022-07-19 21:27:13,136 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 328 transitions, 1448 flow [2022-07-19 21:27:13,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:27:13,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:27:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3988 transitions. [2022-07-19 21:27:13,142 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8485106382978723 [2022-07-19 21:27:13,143 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3988 transitions. [2022-07-19 21:27:13,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3988 transitions. [2022-07-19 21:27:13,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:13,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3988 transitions. [2022-07-19 21:27:13,150 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.4) internal successors, (3988), 20 states have internal predecessors, (3988), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,156 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,157 INFO L186 Difference]: Start difference. First operand has 264 places, 255 transitions, 797 flow. Second operand 20 states and 3988 transitions. [2022-07-19 21:27:13,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 328 transitions, 1448 flow [2022-07-19 21:27:13,182 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 328 transitions, 1442 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:13,185 INFO L242 Difference]: Finished difference. Result has 294 places, 287 transitions, 1215 flow [2022-07-19 21:27:13,185 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=793, PETRI_DIFFERENCE_MINUEND_PLACES=260, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1215, PETRI_PLACES=294, PETRI_TRANSITIONS=287} [2022-07-19 21:27:13,186 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 80 predicate places. [2022-07-19 21:27:13,186 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 287 transitions, 1215 flow [2022-07-19 21:27:13,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,187 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:13,187 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:13,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:27:13,188 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:13,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:13,188 INFO L85 PathProgramCache]: Analyzing trace with hash -112561332, now seen corresponding path program 3 times [2022-07-19 21:27:13,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:13,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268320187] [2022-07-19 21:27:13,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:13,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:13,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:13,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:13,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:13,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268320187] [2022-07-19 21:27:13,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268320187] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:13,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:13,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:13,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090494609] [2022-07-19 21:27:13,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:13,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:13,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:13,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:13,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:13,290 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:13,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 287 transitions, 1215 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:13,294 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:13,294 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:13,294 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:14,097 INFO L129 PetriNetUnfolder]: 1070/4236 cut-off events. [2022-07-19 21:27:14,097 INFO L130 PetriNetUnfolder]: For 8483/8578 co-relation queries the response was YES. [2022-07-19 21:27:14,137 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12265 conditions, 4236 events. 1070/4236 cut-off events. For 8483/8578 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 42876 event pairs, 674 based on Foata normal form. 5/4009 useless extension candidates. Maximal degree in co-relation 12221. Up to 1603 conditions per place. [2022-07-19 21:27:14,152 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 110 selfloop transitions, 42 changer transitions 22/370 dead transitions. [2022-07-19 21:27:14,153 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 370 transitions, 2169 flow [2022-07-19 21:27:14,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:27:14,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:27:14,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3992 transitions. [2022-07-19 21:27:14,160 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8493617021276596 [2022-07-19 21:27:14,160 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3992 transitions. [2022-07-19 21:27:14,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3992 transitions. [2022-07-19 21:27:14,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:14,161 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3992 transitions. [2022-07-19 21:27:14,166 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.6) internal successors, (3992), 20 states have internal predecessors, (3992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,171 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,172 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,172 INFO L186 Difference]: Start difference. First operand has 294 places, 287 transitions, 1215 flow. Second operand 20 states and 3992 transitions. [2022-07-19 21:27:14,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 370 transitions, 2169 flow [2022-07-19 21:27:14,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 370 transitions, 1921 flow, removed 124 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:14,243 INFO L242 Difference]: Finished difference. Result has 324 places, 319 transitions, 1549 flow [2022-07-19 21:27:14,244 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1125, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=287, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1549, PETRI_PLACES=324, PETRI_TRANSITIONS=319} [2022-07-19 21:27:14,245 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 110 predicate places. [2022-07-19 21:27:14,245 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 319 transitions, 1549 flow [2022-07-19 21:27:14,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,246 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:14,246 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:14,246 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:27:14,246 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:14,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:14,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1317235276, now seen corresponding path program 4 times [2022-07-19 21:27:14,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:14,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692302441] [2022-07-19 21:27:14,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:14,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:14,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:14,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:14,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692302441] [2022-07-19 21:27:14,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692302441] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:14,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:14,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:14,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404768016] [2022-07-19 21:27:14,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:14,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:14,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:14,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:14,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:14,348 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:14,350 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 319 transitions, 1549 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:14,350 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:14,350 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:14,350 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:15,239 INFO L129 PetriNetUnfolder]: 1115/4455 cut-off events. [2022-07-19 21:27:15,239 INFO L130 PetriNetUnfolder]: For 10480/10587 co-relation queries the response was YES. [2022-07-19 21:27:15,278 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13266 conditions, 4455 events. 1115/4455 cut-off events. For 10480/10587 co-relation queries the response was YES. Maximal size of possible extension queue 343. Compared 46287 event pairs, 620 based on Foata normal form. 5/4240 useless extension candidates. Maximal degree in co-relation 13208. Up to 1410 conditions per place. [2022-07-19 21:27:15,294 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 141 selfloop transitions, 76 changer transitions 26/439 dead transitions. [2022-07-19 21:27:15,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 439 transitions, 2943 flow [2022-07-19 21:27:15,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:27:15,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:27:15,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4788 transitions. [2022-07-19 21:27:15,302 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489361702127659 [2022-07-19 21:27:15,302 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4788 transitions. [2022-07-19 21:27:15,302 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4788 transitions. [2022-07-19 21:27:15,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:15,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4788 transitions. [2022-07-19 21:27:15,311 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.5) internal successors, (4788), 24 states have internal predecessors, (4788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,319 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,319 INFO L186 Difference]: Start difference. First operand has 324 places, 319 transitions, 1549 flow. Second operand 24 states and 4788 transitions. [2022-07-19 21:27:15,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 345 places, 439 transitions, 2943 flow [2022-07-19 21:27:15,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 439 transitions, 2735 flow, removed 104 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:15,407 INFO L242 Difference]: Finished difference. Result has 363 places, 348 transitions, 2075 flow [2022-07-19 21:27:15,407 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1453, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2075, PETRI_PLACES=363, PETRI_TRANSITIONS=348} [2022-07-19 21:27:15,408 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 149 predicate places. [2022-07-19 21:27:15,408 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 348 transitions, 2075 flow [2022-07-19 21:27:15,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,409 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:15,409 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:15,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:27:15,409 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:15,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:15,410 INFO L85 PathProgramCache]: Analyzing trace with hash -795685710, now seen corresponding path program 5 times [2022-07-19 21:27:15,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:15,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853615286] [2022-07-19 21:27:15,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:15,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:15,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:15,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:15,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853615286] [2022-07-19 21:27:15,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853615286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:15,508 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:15,508 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:15,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117623624] [2022-07-19 21:27:15,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:15,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:15,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:15,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:15,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:15,512 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:15,514 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 348 transitions, 2075 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:15,514 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:15,514 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:15,514 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:16,606 INFO L129 PetriNetUnfolder]: 1220/4858 cut-off events. [2022-07-19 21:27:16,606 INFO L130 PetriNetUnfolder]: For 16315/16413 co-relation queries the response was YES. [2022-07-19 21:27:16,646 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16034 conditions, 4858 events. 1220/4858 cut-off events. For 16315/16413 co-relation queries the response was YES. Maximal size of possible extension queue 383. Compared 51108 event pairs, 692 based on Foata normal form. 4/4628 useless extension candidates. Maximal degree in co-relation 15957. Up to 1643 conditions per place. [2022-07-19 21:27:16,659 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 130 selfloop transitions, 86 changer transitions 24/436 dead transitions. [2022-07-19 21:27:16,660 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 382 places, 436 transitions, 3369 flow [2022-07-19 21:27:16,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:27:16,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:27:16,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4385 transitions. [2022-07-19 21:27:16,664 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8481624758220503 [2022-07-19 21:27:16,664 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4385 transitions. [2022-07-19 21:27:16,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4385 transitions. [2022-07-19 21:27:16,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:16,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4385 transitions. [2022-07-19 21:27:16,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.3181818181818) internal successors, (4385), 22 states have internal predecessors, (4385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,674 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,675 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,675 INFO L186 Difference]: Start difference. First operand has 363 places, 348 transitions, 2075 flow. Second operand 22 states and 4385 transitions. [2022-07-19 21:27:16,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 382 places, 436 transitions, 3369 flow [2022-07-19 21:27:16,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 436 transitions, 3253 flow, removed 58 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:16,813 INFO L242 Difference]: Finished difference. Result has 394 places, 380 transitions, 2686 flow [2022-07-19 21:27:16,814 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1985, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=348, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=2686, PETRI_PLACES=394, PETRI_TRANSITIONS=380} [2022-07-19 21:27:16,814 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 180 predicate places. [2022-07-19 21:27:16,815 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 380 transitions, 2686 flow [2022-07-19 21:27:16,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,815 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:16,816 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:16,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:27:16,816 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:16,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:16,816 INFO L85 PathProgramCache]: Analyzing trace with hash 840040018, now seen corresponding path program 6 times [2022-07-19 21:27:16,817 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:16,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973219807] [2022-07-19 21:27:16,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:16,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:16,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:16,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:16,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:16,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973219807] [2022-07-19 21:27:16,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973219807] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:16,897 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:16,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:16,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117510910] [2022-07-19 21:27:16,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:16,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:16,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:16,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:16,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:16,899 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:16,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 380 transitions, 2686 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:16,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:16,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:16,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:17,951 INFO L129 PetriNetUnfolder]: 1277/5075 cut-off events. [2022-07-19 21:27:17,951 INFO L130 PetriNetUnfolder]: For 19797/19919 co-relation queries the response was YES. [2022-07-19 21:27:17,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17110 conditions, 5075 events. 1277/5075 cut-off events. For 19797/19919 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 54082 event pairs, 750 based on Foata normal form. 2/4838 useless extension candidates. Maximal degree in co-relation 17020. Up to 1725 conditions per place. [2022-07-19 21:27:18,016 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 139 selfloop transitions, 89 changer transitions 16/440 dead transitions. [2022-07-19 21:27:18,016 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 440 transitions, 3797 flow [2022-07-19 21:27:18,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:27:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:27:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2022-07-19 21:27:18,033 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2022-07-19 21:27:18,034 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2022-07-19 21:27:18,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2022-07-19 21:27:18,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:18,037 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2022-07-19 21:27:18,044 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.88235294117646) internal successors, (3398), 17 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,049 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,049 INFO L186 Difference]: Start difference. First operand has 394 places, 380 transitions, 2686 flow. Second operand 17 states and 3398 transitions. [2022-07-19 21:27:18,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 440 transitions, 3797 flow [2022-07-19 21:27:18,227 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 440 transitions, 3647 flow, removed 75 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:18,234 INFO L242 Difference]: Finished difference. Result has 415 places, 401 transitions, 3139 flow [2022-07-19 21:27:18,235 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=3139, PETRI_PLACES=415, PETRI_TRANSITIONS=401} [2022-07-19 21:27:18,236 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 201 predicate places. [2022-07-19 21:27:18,236 INFO L495 AbstractCegarLoop]: Abstraction has has 415 places, 401 transitions, 3139 flow [2022-07-19 21:27:18,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,237 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:18,237 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:18,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:27:18,238 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:18,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:18,238 INFO L85 PathProgramCache]: Analyzing trace with hash 80032396, now seen corresponding path program 7 times [2022-07-19 21:27:18,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:18,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052111323] [2022-07-19 21:27:18,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:18,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:18,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:18,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:18,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:18,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052111323] [2022-07-19 21:27:18,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052111323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:18,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:18,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:18,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742017128] [2022-07-19 21:27:18,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:18,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:18,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:18,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:18,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:18,338 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:18,339 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 401 transitions, 3139 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:18,340 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:18,340 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:18,340 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:19,471 INFO L129 PetriNetUnfolder]: 1304/5373 cut-off events. [2022-07-19 21:27:19,471 INFO L130 PetriNetUnfolder]: For 23368/23552 co-relation queries the response was YES. [2022-07-19 21:27:19,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18477 conditions, 5373 events. 1304/5373 cut-off events. For 23368/23552 co-relation queries the response was YES. Maximal size of possible extension queue 440. Compared 58458 event pairs, 712 based on Foata normal form. 17/5152 useless extension candidates. Maximal degree in co-relation 18379. Up to 1781 conditions per place. [2022-07-19 21:27:19,541 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 147 selfloop transitions, 104 changer transitions 14/461 dead transitions. [2022-07-19 21:27:19,542 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 461 transitions, 4268 flow [2022-07-19 21:27:19,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:27:19,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:27:19,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3198 transitions. [2022-07-19 21:27:19,545 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850531914893617 [2022-07-19 21:27:19,545 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3198 transitions. [2022-07-19 21:27:19,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3198 transitions. [2022-07-19 21:27:19,546 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:19,546 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3198 transitions. [2022-07-19 21:27:19,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.875) internal successors, (3198), 16 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,553 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,554 INFO L186 Difference]: Start difference. First operand has 415 places, 401 transitions, 3139 flow. Second operand 16 states and 3198 transitions. [2022-07-19 21:27:19,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 428 places, 461 transitions, 4268 flow [2022-07-19 21:27:19,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 461 transitions, 4146 flow, removed 61 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:19,740 INFO L242 Difference]: Finished difference. Result has 435 places, 419 transitions, 3566 flow [2022-07-19 21:27:19,741 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3021, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=401, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3566, PETRI_PLACES=435, PETRI_TRANSITIONS=419} [2022-07-19 21:27:19,741 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 221 predicate places. [2022-07-19 21:27:19,741 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 419 transitions, 3566 flow [2022-07-19 21:27:19,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,742 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:19,742 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:19,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:27:19,743 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:19,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:19,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1995871614, now seen corresponding path program 8 times [2022-07-19 21:27:19,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:19,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910838901] [2022-07-19 21:27:19,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:19,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:19,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:19,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:19,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910838901] [2022-07-19 21:27:19,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910838901] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:19,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:19,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:19,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224680142] [2022-07-19 21:27:19,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:19,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:19,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:19,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:19,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:19,847 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:19,848 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 419 transitions, 3566 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:19,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:19,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:19,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:21,092 INFO L129 PetriNetUnfolder]: 1335/5343 cut-off events. [2022-07-19 21:27:21,092 INFO L130 PetriNetUnfolder]: For 24742/24864 co-relation queries the response was YES. [2022-07-19 21:27:21,162 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19704 conditions, 5343 events. 1335/5343 cut-off events. For 24742/24864 co-relation queries the response was YES. Maximal size of possible extension queue 463. Compared 58449 event pairs, 679 based on Foata normal form. 11/5116 useless extension candidates. Maximal degree in co-relation 19598. Up to 1719 conditions per place. [2022-07-19 21:27:21,186 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 171 selfloop transitions, 98 changer transitions 23/488 dead transitions. [2022-07-19 21:27:21,186 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 488 transitions, 4987 flow [2022-07-19 21:27:21,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:27:21,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:27:21,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4190 transitions. [2022-07-19 21:27:21,193 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8490374873353597 [2022-07-19 21:27:21,193 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4190 transitions. [2022-07-19 21:27:21,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4190 transitions. [2022-07-19 21:27:21,195 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:21,195 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4190 transitions. [2022-07-19 21:27:21,201 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.52380952380952) internal successors, (4190), 21 states have internal predecessors, (4190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,207 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,207 INFO L186 Difference]: Start difference. First operand has 435 places, 419 transitions, 3566 flow. Second operand 21 states and 4190 transitions. [2022-07-19 21:27:21,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 453 places, 488 transitions, 4987 flow [2022-07-19 21:27:21,444 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 450 places, 488 transitions, 4849 flow, removed 47 selfloop flow, removed 3 redundant places. [2022-07-19 21:27:21,454 INFO L242 Difference]: Finished difference. Result has 464 places, 443 transitions, 4245 flow [2022-07-19 21:27:21,455 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3466, PETRI_DIFFERENCE_MINUEND_PLACES=430, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=336, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=4245, PETRI_PLACES=464, PETRI_TRANSITIONS=443} [2022-07-19 21:27:21,456 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 250 predicate places. [2022-07-19 21:27:21,456 INFO L495 AbstractCegarLoop]: Abstraction has has 464 places, 443 transitions, 4245 flow [2022-07-19 21:27:21,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,457 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:21,457 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:21,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:27:21,457 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:21,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:21,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1027007434, now seen corresponding path program 9 times [2022-07-19 21:27:21,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:21,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435806545] [2022-07-19 21:27:21,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:21,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:21,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:21,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:21,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:21,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435806545] [2022-07-19 21:27:21,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435806545] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:21,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:21,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:21,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990136177] [2022-07-19 21:27:21,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:21,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:21,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:21,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:21,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:21,582 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:21,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 464 places, 443 transitions, 4245 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:21,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:21,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:21,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:22,981 INFO L129 PetriNetUnfolder]: 1335/5528 cut-off events. [2022-07-19 21:27:22,982 INFO L130 PetriNetUnfolder]: For 31145/31341 co-relation queries the response was YES. [2022-07-19 21:27:23,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20662 conditions, 5528 events. 1335/5528 cut-off events. For 31145/31341 co-relation queries the response was YES. Maximal size of possible extension queue 473. Compared 61055 event pairs, 695 based on Foata normal form. 24/5324 useless extension candidates. Maximal degree in co-relation 20544. Up to 1819 conditions per place. [2022-07-19 21:27:23,065 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 160 selfloop transitions, 117 changer transitions 23/496 dead transitions. [2022-07-19 21:27:23,065 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 496 transitions, 5379 flow [2022-07-19 21:27:23,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-19 21:27:23,068 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-19 21:27:23,069 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-19 21:27:23,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-19 21:27:23,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:23,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-19 21:27:23,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,077 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,077 INFO L186 Difference]: Start difference. First operand has 464 places, 443 transitions, 4245 flow. Second operand 18 states and 3593 transitions. [2022-07-19 21:27:23,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 496 transitions, 5379 flow [2022-07-19 21:27:23,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 496 transitions, 5187 flow, removed 96 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:23,329 INFO L242 Difference]: Finished difference. Result has 485 places, 453 transitions, 4557 flow [2022-07-19 21:27:23,329 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4067, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4557, PETRI_PLACES=485, PETRI_TRANSITIONS=453} [2022-07-19 21:27:23,330 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 271 predicate places. [2022-07-19 21:27:23,330 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 453 transitions, 4557 flow [2022-07-19 21:27:23,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,330 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:23,331 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:23,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:27:23,331 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:23,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:23,331 INFO L85 PathProgramCache]: Analyzing trace with hash 331830240, now seen corresponding path program 10 times [2022-07-19 21:27:23,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:23,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585302361] [2022-07-19 21:27:23,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:23,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:23,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:23,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:23,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585302361] [2022-07-19 21:27:23,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585302361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:23,404 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:23,404 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:23,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024746491] [2022-07-19 21:27:23,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:23,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:23,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:23,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:23,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:23,407 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:23,408 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 453 transitions, 4557 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:23,408 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:23,408 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:23,408 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:24,760 INFO L129 PetriNetUnfolder]: 1368/5640 cut-off events. [2022-07-19 21:27:24,761 INFO L130 PetriNetUnfolder]: For 30503/30631 co-relation queries the response was YES. [2022-07-19 21:27:24,826 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21861 conditions, 5640 events. 1368/5640 cut-off events. For 30503/30631 co-relation queries the response was YES. Maximal size of possible extension queue 509. Compared 63155 event pairs, 696 based on Foata normal form. 11/5411 useless extension candidates. Maximal degree in co-relation 21736. Up to 1869 conditions per place. [2022-07-19 21:27:24,842 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 188 selfloop transitions, 107 changer transitions 15/506 dead transitions. [2022-07-19 21:27:24,842 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 506 transitions, 5851 flow [2022-07-19 21:27:24,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:27:24,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:27:24,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3398 transitions. [2022-07-19 21:27:24,845 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8505632040050063 [2022-07-19 21:27:24,846 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3398 transitions. [2022-07-19 21:27:24,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3398 transitions. [2022-07-19 21:27:24,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:24,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3398 transitions. [2022-07-19 21:27:24,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.88235294117646) internal successors, (3398), 17 states have internal predecessors, (3398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,854 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:24,854 INFO L186 Difference]: Start difference. First operand has 485 places, 453 transitions, 4557 flow. Second operand 17 states and 3398 transitions. [2022-07-19 21:27:24,855 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 506 transitions, 5851 flow [2022-07-19 21:27:25,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 506 transitions, 5669 flow, removed 47 selfloop flow, removed 4 redundant places. [2022-07-19 21:27:25,160 INFO L242 Difference]: Finished difference. Result has 504 places, 474 transitions, 5100 flow [2022-07-19 21:27:25,160 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4391, PETRI_DIFFERENCE_MINUEND_PLACES=479, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=453, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=361, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5100, PETRI_PLACES=504, PETRI_TRANSITIONS=474} [2022-07-19 21:27:25,161 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 290 predicate places. [2022-07-19 21:27:25,161 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 474 transitions, 5100 flow [2022-07-19 21:27:25,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,161 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:25,162 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:25,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:27:25,162 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:25,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:25,162 INFO L85 PathProgramCache]: Analyzing trace with hash -2122669658, now seen corresponding path program 11 times [2022-07-19 21:27:25,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:25,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971454779] [2022-07-19 21:27:25,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:25,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:25,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:25,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:25,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971454779] [2022-07-19 21:27:25,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [971454779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:25,248 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:25,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:25,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153483054] [2022-07-19 21:27:25,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:25,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:25,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:25,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:25,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:25,251 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:25,252 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 474 transitions, 5100 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:25,253 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:25,253 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:25,253 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:26,859 INFO L129 PetriNetUnfolder]: 1375/5867 cut-off events. [2022-07-19 21:27:26,859 INFO L130 PetriNetUnfolder]: For 34876/35025 co-relation queries the response was YES. [2022-07-19 21:27:26,957 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22714 conditions, 5867 events. 1375/5867 cut-off events. For 34876/35025 co-relation queries the response was YES. Maximal size of possible extension queue 527. Compared 66240 event pairs, 765 based on Foata normal form. 2/5620 useless extension candidates. Maximal degree in co-relation 22581. Up to 1891 conditions per place. [2022-07-19 21:27:26,976 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 173 selfloop transitions, 127 changer transitions 20/516 dead transitions. [2022-07-19 21:27:26,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 519 places, 516 transitions, 6163 flow [2022-07-19 21:27:26,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:26,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:26,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-19 21:27:26,983 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-19 21:27:26,983 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-19 21:27:26,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-19 21:27:26,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:26,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-19 21:27:26,987 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,995 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,996 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:26,996 INFO L186 Difference]: Start difference. First operand has 504 places, 474 transitions, 5100 flow. Second operand 18 states and 3593 transitions. [2022-07-19 21:27:26,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 519 places, 516 transitions, 6163 flow [2022-07-19 21:27:27,290 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 516 places, 516 transitions, 5985 flow, removed 64 selfloop flow, removed 3 redundant places. [2022-07-19 21:27:27,297 INFO L242 Difference]: Finished difference. Result has 523 places, 486 transitions, 5477 flow [2022-07-19 21:27:27,298 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4928, PETRI_DIFFERENCE_MINUEND_PLACES=499, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=353, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5477, PETRI_PLACES=523, PETRI_TRANSITIONS=486} [2022-07-19 21:27:27,298 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 309 predicate places. [2022-07-19 21:27:27,299 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 486 transitions, 5477 flow [2022-07-19 21:27:27,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,299 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:27,300 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:27,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:27:27,300 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:27,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:27,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1393070102, now seen corresponding path program 12 times [2022-07-19 21:27:27,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:27,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114985029] [2022-07-19 21:27:27,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:27,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:27,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:27,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:27,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:27,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114985029] [2022-07-19 21:27:27,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114985029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:27,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:27,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:27,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586924750] [2022-07-19 21:27:27,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:27,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:27,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:27,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:27,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:27,404 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:27,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 486 transitions, 5477 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:27,406 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:27,406 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:27,406 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:28,676 INFO L129 PetriNetUnfolder]: 1370/5689 cut-off events. [2022-07-19 21:27:28,676 INFO L130 PetriNetUnfolder]: For 31921/32052 co-relation queries the response was YES. [2022-07-19 21:27:28,775 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22719 conditions, 5689 events. 1370/5689 cut-off events. For 31921/32052 co-relation queries the response was YES. Maximal size of possible extension queue 512. Compared 63951 event pairs, 697 based on Foata normal form. 11/5461 useless extension candidates. Maximal degree in co-relation 22581. Up to 1881 conditions per place. [2022-07-19 21:27:28,791 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 191 selfloop transitions, 116 changer transitions 24/527 dead transitions. [2022-07-19 21:27:28,791 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 538 places, 527 transitions, 6531 flow [2022-07-19 21:27:28,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:28,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:28,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3597 transitions. [2022-07-19 21:27:28,793 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850354609929078 [2022-07-19 21:27:28,794 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3597 transitions. [2022-07-19 21:27:28,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3597 transitions. [2022-07-19 21:27:28,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:28,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3597 transitions. [2022-07-19 21:27:28,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.83333333333334) internal successors, (3597), 18 states have internal predecessors, (3597), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,800 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:28,800 INFO L186 Difference]: Start difference. First operand has 523 places, 486 transitions, 5477 flow. Second operand 18 states and 3597 transitions. [2022-07-19 21:27:28,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 538 places, 527 transitions, 6531 flow [2022-07-19 21:27:29,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 534 places, 527 transitions, 6394 flow, removed 42 selfloop flow, removed 4 redundant places. [2022-07-19 21:27:29,130 INFO L242 Difference]: Finished difference. Result has 541 places, 495 transitions, 5838 flow [2022-07-19 21:27:29,130 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5346, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=373, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=5838, PETRI_PLACES=541, PETRI_TRANSITIONS=495} [2022-07-19 21:27:29,131 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 327 predicate places. [2022-07-19 21:27:29,131 INFO L495 AbstractCegarLoop]: Abstraction has has 541 places, 495 transitions, 5838 flow [2022-07-19 21:27:29,131 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,132 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:29,132 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:29,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:27:29,132 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:29,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:29,132 INFO L85 PathProgramCache]: Analyzing trace with hash 869174098, now seen corresponding path program 13 times [2022-07-19 21:27:29,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:29,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422861658] [2022-07-19 21:27:29,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:29,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:29,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:29,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:29,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422861658] [2022-07-19 21:27:29,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422861658] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:29,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:29,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:29,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883824613] [2022-07-19 21:27:29,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:29,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:29,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:29,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:29,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:29,204 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:29,205 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 541 places, 495 transitions, 5838 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:29,205 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:29,205 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:29,206 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:30,812 INFO L129 PetriNetUnfolder]: 1468/6055 cut-off events. [2022-07-19 21:27:30,812 INFO L130 PetriNetUnfolder]: For 40574/40705 co-relation queries the response was YES. [2022-07-19 21:27:30,919 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25112 conditions, 6055 events. 1468/6055 cut-off events. For 40574/40705 co-relation queries the response was YES. Maximal size of possible extension queue 565. Compared 68923 event pairs, 699 based on Foata normal form. 5/5832 useless extension candidates. Maximal degree in co-relation 24970. Up to 1920 conditions per place. [2022-07-19 21:27:30,941 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 215 selfloop transitions, 144 changer transitions 23/578 dead transitions. [2022-07-19 21:27:30,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 560 places, 578 transitions, 7572 flow [2022-07-19 21:27:30,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:27:30,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:27:30,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4383 transitions. [2022-07-19 21:27:30,946 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8477756286266924 [2022-07-19 21:27:30,946 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4383 transitions. [2022-07-19 21:27:30,946 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4383 transitions. [2022-07-19 21:27:30,947 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:30,947 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4383 transitions. [2022-07-19 21:27:30,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.22727272727272) internal successors, (4383), 22 states have internal predecessors, (4383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,959 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:30,960 INFO L186 Difference]: Start difference. First operand has 541 places, 495 transitions, 5838 flow. Second operand 22 states and 4383 transitions. [2022-07-19 21:27:30,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 560 places, 578 transitions, 7572 flow [2022-07-19 21:27:31,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 557 places, 578 transitions, 7447 flow, removed 61 selfloop flow, removed 3 redundant places. [2022-07-19 21:27:31,381 INFO L242 Difference]: Finished difference. Result has 571 places, 527 transitions, 6764 flow [2022-07-19 21:27:31,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5715, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=6764, PETRI_PLACES=571, PETRI_TRANSITIONS=527} [2022-07-19 21:27:31,382 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 357 predicate places. [2022-07-19 21:27:31,382 INFO L495 AbstractCegarLoop]: Abstraction has has 571 places, 527 transitions, 6764 flow [2022-07-19 21:27:31,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:31,383 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:31,383 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:31,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:27:31,383 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:31,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:31,384 INFO L85 PathProgramCache]: Analyzing trace with hash 173628278, now seen corresponding path program 14 times [2022-07-19 21:27:31,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:31,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591477827] [2022-07-19 21:27:31,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:31,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:31,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:31,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:31,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:31,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591477827] [2022-07-19 21:27:31,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591477827] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:31,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:31,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:31,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904191244] [2022-07-19 21:27:31,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:31,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:31,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:31,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:31,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:31,458 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:31,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 571 places, 527 transitions, 6764 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:31,459 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:31,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:31,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:33,256 INFO L129 PetriNetUnfolder]: 1502/6295 cut-off events. [2022-07-19 21:27:33,257 INFO L130 PetriNetUnfolder]: For 47419/47550 co-relation queries the response was YES. [2022-07-19 21:27:33,338 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27257 conditions, 6295 events. 1502/6295 cut-off events. For 47419/47550 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 72622 event pairs, 710 based on Foata normal form. 5/6063 useless extension candidates. Maximal degree in co-relation 27103. Up to 1945 conditions per place. [2022-07-19 21:27:33,357 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 270 selfloop transitions, 106 changer transitions 21/593 dead transitions. [2022-07-19 21:27:33,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 589 places, 593 transitions, 8429 flow [2022-07-19 21:27:33,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:27:33,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:27:33,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4187 transitions. [2022-07-19 21:27:33,362 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8484295845997973 [2022-07-19 21:27:33,362 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4187 transitions. [2022-07-19 21:27:33,362 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4187 transitions. [2022-07-19 21:27:33,363 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:33,363 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4187 transitions. [2022-07-19 21:27:33,367 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.38095238095238) internal successors, (4187), 21 states have internal predecessors, (4187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:33,370 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:33,370 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:33,370 INFO L186 Difference]: Start difference. First operand has 571 places, 527 transitions, 6764 flow. Second operand 21 states and 4187 transitions. [2022-07-19 21:27:33,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 589 places, 593 transitions, 8429 flow [2022-07-19 21:27:33,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 593 transitions, 8239 flow, removed 95 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:33,804 INFO L242 Difference]: Finished difference. Result has 601 places, 551 transitions, 7438 flow [2022-07-19 21:27:33,804 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=6588, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=436, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=7438, PETRI_PLACES=601, PETRI_TRANSITIONS=551} [2022-07-19 21:27:33,805 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 387 predicate places. [2022-07-19 21:27:33,805 INFO L495 AbstractCegarLoop]: Abstraction has has 601 places, 551 transitions, 7438 flow [2022-07-19 21:27:33,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:33,805 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:33,805 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:33,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:27:33,805 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:33,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:33,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1231041606, now seen corresponding path program 15 times [2022-07-19 21:27:33,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:33,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459476927] [2022-07-19 21:27:33,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:33,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:33,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:33,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:33,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459476927] [2022-07-19 21:27:33,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459476927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:33,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:33,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:33,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105521451] [2022-07-19 21:27:33,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:33,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:33,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:33,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:33,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:33,878 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:33,879 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 601 places, 551 transitions, 7438 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:33,879 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:33,879 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:33,879 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:35,488 INFO L129 PetriNetUnfolder]: 1525/6442 cut-off events. [2022-07-19 21:27:35,489 INFO L130 PetriNetUnfolder]: For 52156/52287 co-relation queries the response was YES. [2022-07-19 21:27:35,631 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28522 conditions, 6442 events. 1525/6442 cut-off events. For 52156/52287 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 75161 event pairs, 702 based on Foata normal form. 5/6217 useless extension candidates. Maximal degree in co-relation 28355. Up to 2016 conditions per place. [2022-07-19 21:27:35,656 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 236 selfloop transitions, 162 changer transitions 18/612 dead transitions. [2022-07-19 21:27:35,656 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 616 places, 612 transitions, 8986 flow [2022-07-19 21:27:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:35,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3593 transitions. [2022-07-19 21:27:35,659 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8494089834515366 [2022-07-19 21:27:35,659 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3593 transitions. [2022-07-19 21:27:35,659 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3593 transitions. [2022-07-19 21:27:35,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:35,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3593 transitions. [2022-07-19 21:27:35,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.61111111111111) internal successors, (3593), 18 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:35,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:35,667 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:35,667 INFO L186 Difference]: Start difference. First operand has 601 places, 551 transitions, 7438 flow. Second operand 18 states and 3593 transitions. [2022-07-19 21:27:35,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 616 places, 612 transitions, 8986 flow [2022-07-19 21:27:36,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 614 places, 612 transitions, 8796 flow, removed 95 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:36,243 INFO L242 Difference]: Finished difference. Result has 622 places, 572 transitions, 8094 flow [2022-07-19 21:27:36,243 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7250, PETRI_DIFFERENCE_MINUEND_PLACES=597, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=403, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8094, PETRI_PLACES=622, PETRI_TRANSITIONS=572} [2022-07-19 21:27:36,243 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 408 predicate places. [2022-07-19 21:27:36,244 INFO L495 AbstractCegarLoop]: Abstraction has has 622 places, 572 transitions, 8094 flow [2022-07-19 21:27:36,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:36,244 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:36,244 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:36,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:27:36,245 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:36,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:36,245 INFO L85 PathProgramCache]: Analyzing trace with hash 787764488, now seen corresponding path program 16 times [2022-07-19 21:27:36,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:36,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385107444] [2022-07-19 21:27:36,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:36,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:36,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:36,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:36,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385107444] [2022-07-19 21:27:36,310 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385107444] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:36,310 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:36,310 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:36,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411813431] [2022-07-19 21:27:36,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:36,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:36,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:36,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:36,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:36,315 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:36,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 572 transitions, 8094 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:36,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:36,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:36,316 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:38,240 INFO L129 PetriNetUnfolder]: 1580/6607 cut-off events. [2022-07-19 21:27:38,240 INFO L130 PetriNetUnfolder]: For 57093/57224 co-relation queries the response was YES. [2022-07-19 21:27:38,327 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30514 conditions, 6607 events. 1580/6607 cut-off events. For 57093/57224 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 77398 event pairs, 713 based on Foata normal form. 5/6374 useless extension candidates. Maximal degree in co-relation 30340. Up to 2059 conditions per place. [2022-07-19 21:27:38,343 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 280 selfloop transitions, 135 changer transitions 16/627 dead transitions. [2022-07-19 21:27:38,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 636 places, 627 transitions, 9692 flow [2022-07-19 21:27:38,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:27:38,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:27:38,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2022-07-19 21:27:38,346 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2022-07-19 21:27:38,346 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2022-07-19 21:27:38,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2022-07-19 21:27:38,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:38,346 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2022-07-19 21:27:38,349 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.8235294117647) internal successors, (3397), 17 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:38,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:38,351 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:38,351 INFO L186 Difference]: Start difference. First operand has 622 places, 572 transitions, 8094 flow. Second operand 17 states and 3397 transitions. [2022-07-19 21:27:38,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 636 places, 627 transitions, 9692 flow [2022-07-19 21:27:38,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 627 transitions, 9474 flow, removed 109 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:38,942 INFO L242 Difference]: Finished difference. Result has 643 places, 593 transitions, 8730 flow [2022-07-19 21:27:38,943 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7920, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=572, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=452, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=8730, PETRI_PLACES=643, PETRI_TRANSITIONS=593} [2022-07-19 21:27:38,943 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 429 predicate places. [2022-07-19 21:27:38,944 INFO L495 AbstractCegarLoop]: Abstraction has has 643 places, 593 transitions, 8730 flow [2022-07-19 21:27:38,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:38,944 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:38,944 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:38,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:27:38,944 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:38,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:38,945 INFO L85 PathProgramCache]: Analyzing trace with hash 340551250, now seen corresponding path program 17 times [2022-07-19 21:27:38,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:38,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108866643] [2022-07-19 21:27:38,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:38,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:38,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:39,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:39,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:39,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108866643] [2022-07-19 21:27:39,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108866643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:39,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:39,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:39,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452558162] [2022-07-19 21:27:39,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:39,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:39,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:39,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:39,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:39,021 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:39,023 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 593 transitions, 8730 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:39,023 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:39,023 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:39,023 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:40,839 INFO L129 PetriNetUnfolder]: 1603/6826 cut-off events. [2022-07-19 21:27:40,839 INFO L130 PetriNetUnfolder]: For 61184/61315 co-relation queries the response was YES. [2022-07-19 21:27:40,980 INFO L84 FinitePrefix]: Finished finitePrefix Result has 31933 conditions, 6826 events. 1603/6826 cut-off events. For 61184/61315 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 81044 event pairs, 710 based on Foata normal form. 5/6592 useless extension candidates. Maximal degree in co-relation 31751. Up to 2094 conditions per place. [2022-07-19 21:27:41,002 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 305 selfloop transitions, 127 changer transitions 17/645 dead transitions. [2022-07-19 21:27:41,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 645 transitions, 10337 flow [2022-07-19 21:27:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:41,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2022-07-19 21:27:41,005 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2022-07-19 21:27:41,006 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2022-07-19 21:27:41,006 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2022-07-19 21:27:41,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:41,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2022-07-19 21:27:41,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.77777777777777) internal successors, (3596), 18 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:41,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:41,013 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:41,013 INFO L186 Difference]: Start difference. First operand has 643 places, 593 transitions, 8730 flow. Second operand 18 states and 3596 transitions. [2022-07-19 21:27:41,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 645 transitions, 10337 flow [2022-07-19 21:27:41,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 656 places, 645 transitions, 10203 flow, removed 67 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:41,656 INFO L242 Difference]: Finished difference. Result has 664 places, 612 transitions, 9395 flow [2022-07-19 21:27:41,657 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8600, PETRI_DIFFERENCE_MINUEND_PLACES=639, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=9395, PETRI_PLACES=664, PETRI_TRANSITIONS=612} [2022-07-19 21:27:41,657 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 450 predicate places. [2022-07-19 21:27:41,657 INFO L495 AbstractCegarLoop]: Abstraction has has 664 places, 612 transitions, 9395 flow [2022-07-19 21:27:41,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:41,658 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:41,658 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:41,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 21:27:41,658 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:41,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:41,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1026103542, now seen corresponding path program 18 times [2022-07-19 21:27:41,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:41,658 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858317136] [2022-07-19 21:27:41,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:41,659 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:41,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:41,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:41,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:41,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858317136] [2022-07-19 21:27:41,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858317136] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:41,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:41,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:41,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697307605] [2022-07-19 21:27:41,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:41,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:41,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:41,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:41,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:41,737 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:41,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 612 transitions, 9395 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:41,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:41,739 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:41,739 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:43,734 INFO L129 PetriNetUnfolder]: 1606/6864 cut-off events. [2022-07-19 21:27:43,735 INFO L130 PetriNetUnfolder]: For 64603/64734 co-relation queries the response was YES. [2022-07-19 21:27:43,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 32733 conditions, 6864 events. 1606/6864 cut-off events. For 64603/64734 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 81596 event pairs, 704 based on Foata normal form. 5/6641 useless extension candidates. Maximal degree in co-relation 32544. Up to 2120 conditions per place. [2022-07-19 21:27:43,863 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 260 selfloop transitions, 179 changer transitions 22/657 dead transitions. [2022-07-19 21:27:43,863 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 677 places, 657 transitions, 10708 flow [2022-07-19 21:27:43,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:27:43,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:27:43,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3201 transitions. [2022-07-19 21:27:43,867 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8513297872340425 [2022-07-19 21:27:43,867 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3201 transitions. [2022-07-19 21:27:43,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3201 transitions. [2022-07-19 21:27:43,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:43,867 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3201 transitions. [2022-07-19 21:27:43,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 200.0625) internal successors, (3201), 16 states have internal predecessors, (3201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:43,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:43,871 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:43,871 INFO L186 Difference]: Start difference. First operand has 664 places, 612 transitions, 9395 flow. Second operand 16 states and 3201 transitions. [2022-07-19 21:27:43,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 677 places, 657 transitions, 10708 flow [2022-07-19 21:27:44,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 675 places, 657 transitions, 10536 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:44,489 INFO L242 Difference]: Finished difference. Result has 682 places, 620 transitions, 9803 flow [2022-07-19 21:27:44,489 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9225, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=612, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=171, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=9803, PETRI_PLACES=682, PETRI_TRANSITIONS=620} [2022-07-19 21:27:44,489 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 468 predicate places. [2022-07-19 21:27:44,489 INFO L495 AbstractCegarLoop]: Abstraction has has 682 places, 620 transitions, 9803 flow [2022-07-19 21:27:44,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:44,490 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:44,490 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:44,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:27:44,490 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:44,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:44,490 INFO L85 PathProgramCache]: Analyzing trace with hash 157105292, now seen corresponding path program 19 times [2022-07-19 21:27:44,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:44,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302853598] [2022-07-19 21:27:44,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:44,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:44,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:44,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:44,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:44,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302853598] [2022-07-19 21:27:44,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302853598] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:44,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:44,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:44,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445469524] [2022-07-19 21:27:44,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:44,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:44,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:44,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:44,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:44,580 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:44,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 620 transitions, 9803 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:44,582 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:44,582 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:44,582 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:46,791 INFO L129 PetriNetUnfolder]: 1625/7174 cut-off events. [2022-07-19 21:27:46,791 INFO L130 PetriNetUnfolder]: For 70157/70288 co-relation queries the response was YES. [2022-07-19 21:27:46,941 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34320 conditions, 7174 events. 1625/7174 cut-off events. For 70157/70288 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 87072 event pairs, 717 based on Foata normal form. 5/6940 useless extension candidates. Maximal degree in co-relation 34125. Up to 2141 conditions per place. [2022-07-19 21:27:46,963 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 312 selfloop transitions, 135 changer transitions 22/665 dead transitions. [2022-07-19 21:27:46,963 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 696 places, 665 transitions, 11273 flow [2022-07-19 21:27:46,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:27:46,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:27:46,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3401 transitions. [2022-07-19 21:27:46,965 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8513141426783479 [2022-07-19 21:27:46,966 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3401 transitions. [2022-07-19 21:27:46,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3401 transitions. [2022-07-19 21:27:46,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:46,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3401 transitions. [2022-07-19 21:27:46,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 200.05882352941177) internal successors, (3401), 17 states have internal predecessors, (3401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:46,970 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:46,971 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:46,971 INFO L186 Difference]: Start difference. First operand has 682 places, 620 transitions, 9803 flow. Second operand 17 states and 3401 transitions. [2022-07-19 21:27:46,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 696 places, 665 transitions, 11273 flow [2022-07-19 21:27:47,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 665 transitions, 10968 flow, removed 37 selfloop flow, removed 5 redundant places. [2022-07-19 21:27:47,677 INFO L242 Difference]: Finished difference. Result has 698 places, 633 transitions, 10169 flow [2022-07-19 21:27:47,678 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9518, PETRI_DIFFERENCE_MINUEND_PLACES=675, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=620, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=493, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=10169, PETRI_PLACES=698, PETRI_TRANSITIONS=633} [2022-07-19 21:27:47,678 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 484 predicate places. [2022-07-19 21:27:47,678 INFO L495 AbstractCegarLoop]: Abstraction has has 698 places, 633 transitions, 10169 flow [2022-07-19 21:27:47,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:47,679 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:47,679 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:47,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 21:27:47,679 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:47,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:47,679 INFO L85 PathProgramCache]: Analyzing trace with hash 573914000, now seen corresponding path program 20 times [2022-07-19 21:27:47,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:47,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727514390] [2022-07-19 21:27:47,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:47,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:47,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:47,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:47,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:47,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727514390] [2022-07-19 21:27:47,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727514390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:47,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:47,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:47,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017154019] [2022-07-19 21:27:47,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:47,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:47,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:47,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:47,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:47,748 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:47,749 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 698 places, 633 transitions, 10169 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:47,750 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:47,750 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:47,750 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:50,032 INFO L129 PetriNetUnfolder]: 1625/7156 cut-off events. [2022-07-19 21:27:50,032 INFO L130 PetriNetUnfolder]: For 70851/70982 co-relation queries the response was YES. [2022-07-19 21:27:50,175 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34388 conditions, 7156 events. 1625/7156 cut-off events. For 70851/70982 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 86615 event pairs, 710 based on Foata normal form. 5/6929 useless extension candidates. Maximal degree in co-relation 34188. Up to 2137 conditions per place. [2022-07-19 21:27:50,200 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 298 selfloop transitions, 153 changer transitions 27/674 dead transitions. [2022-07-19 21:27:50,200 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 713 places, 674 transitions, 11514 flow [2022-07-19 21:27:50,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:27:50,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:27:50,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2022-07-19 21:27:50,203 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2022-07-19 21:27:50,203 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2022-07-19 21:27:50,203 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2022-07-19 21:27:50,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:50,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2022-07-19 21:27:50,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.77777777777777) internal successors, (3596), 18 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:50,208 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:50,209 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:50,209 INFO L186 Difference]: Start difference. First operand has 698 places, 633 transitions, 10169 flow. Second operand 18 states and 3596 transitions. [2022-07-19 21:27:50,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 713 places, 674 transitions, 11514 flow [2022-07-19 21:27:50,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 710 places, 674 transitions, 11345 flow, removed 48 selfloop flow, removed 3 redundant places. [2022-07-19 21:27:50,996 INFO L242 Difference]: Finished difference. Result has 717 places, 642 transitions, 10587 flow [2022-07-19 21:27:50,997 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10004, PETRI_DIFFERENCE_MINUEND_PLACES=693, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10587, PETRI_PLACES=717, PETRI_TRANSITIONS=642} [2022-07-19 21:27:50,998 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 503 predicate places. [2022-07-19 21:27:50,998 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 642 transitions, 10587 flow [2022-07-19 21:27:50,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:50,999 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:50,999 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:50,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 21:27:50,999 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:51,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:51,000 INFO L85 PathProgramCache]: Analyzing trace with hash 324066382, now seen corresponding path program 1 times [2022-07-19 21:27:51,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:51,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692809702] [2022-07-19 21:27:51,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:51,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:51,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:51,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:51,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692809702] [2022-07-19 21:27:51,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692809702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:51,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:51,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:51,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729745674] [2022-07-19 21:27:51,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:51,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:51,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:51,094 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:51,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 642 transitions, 10587 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:51,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:51,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:51,095 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:53,314 INFO L129 PetriNetUnfolder]: 1623/6822 cut-off events. [2022-07-19 21:27:53,315 INFO L130 PetriNetUnfolder]: For 75736/75863 co-relation queries the response was YES. [2022-07-19 21:27:53,457 INFO L84 FinitePrefix]: Finished finitePrefix Result has 34239 conditions, 6822 events. 1623/6822 cut-off events. For 75736/75863 co-relation queries the response was YES. Maximal size of possible extension queue 688. Compared 81227 event pairs, 205 based on Foata normal form. 3/6618 useless extension candidates. Maximal degree in co-relation 34034. Up to 2437 conditions per place. [2022-07-19 21:27:53,474 INFO L132 encePairwiseOnDemand]: 220/235 looper letters, 439 selfloop transitions, 88 changer transitions 18/739 dead transitions. [2022-07-19 21:27:53,474 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 730 places, 739 transitions, 12323 flow [2022-07-19 21:27:53,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:27:53,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:27:53,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3227 transitions. [2022-07-19 21:27:53,477 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8582446808510639 [2022-07-19 21:27:53,477 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3227 transitions. [2022-07-19 21:27:53,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3227 transitions. [2022-07-19 21:27:53,478 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:53,478 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3227 transitions. [2022-07-19 21:27:53,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 201.6875) internal successors, (3227), 16 states have internal predecessors, (3227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:53,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:53,486 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:53,486 INFO L186 Difference]: Start difference. First operand has 717 places, 642 transitions, 10587 flow. Second operand 16 states and 3227 transitions. [2022-07-19 21:27:53,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 730 places, 739 transitions, 12323 flow [2022-07-19 21:27:54,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 726 places, 739 transitions, 12121 flow, removed 62 selfloop flow, removed 4 redundant places. [2022-07-19 21:27:54,249 INFO L242 Difference]: Finished difference. Result has 738 places, 675 transitions, 10939 flow [2022-07-19 21:27:54,250 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10393, PETRI_DIFFERENCE_MINUEND_PLACES=711, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=642, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=10939, PETRI_PLACES=738, PETRI_TRANSITIONS=675} [2022-07-19 21:27:54,250 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 524 predicate places. [2022-07-19 21:27:54,250 INFO L495 AbstractCegarLoop]: Abstraction has has 738 places, 675 transitions, 10939 flow [2022-07-19 21:27:54,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:54,251 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:54,251 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:54,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 21:27:54,251 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:54,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:54,251 INFO L85 PathProgramCache]: Analyzing trace with hash 809221024, now seen corresponding path program 1 times [2022-07-19 21:27:54,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:54,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793879604] [2022-07-19 21:27:54,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:54,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:54,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:54,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793879604] [2022-07-19 21:27:54,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793879604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:54,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:54,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:27:54,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055075869] [2022-07-19 21:27:54,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:54,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:27:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:27:54,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:27:54,296 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 202 out of 235 [2022-07-19 21:27:54,297 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 738 places, 675 transitions, 10939 flow. Second operand has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:54,297 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:54,298 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 202 of 235 [2022-07-19 21:27:54,298 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:55,107 INFO L129 PetriNetUnfolder]: 453/3449 cut-off events. [2022-07-19 21:27:55,108 INFO L130 PetriNetUnfolder]: For 37902/38341 co-relation queries the response was YES. [2022-07-19 21:27:55,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15939 conditions, 3449 events. 453/3449 cut-off events. For 37902/38341 co-relation queries the response was YES. Maximal size of possible extension queue 251. Compared 35890 event pairs, 39 based on Foata normal form. 23/3358 useless extension candidates. Maximal degree in co-relation 15725. Up to 339 conditions per place. [2022-07-19 21:27:55,191 INFO L132 encePairwiseOnDemand]: 227/235 looper letters, 19 selfloop transitions, 0 changer transitions 475/695 dead transitions. [2022-07-19 21:27:55,191 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 695 transitions, 11076 flow [2022-07-19 21:27:55,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:27:55,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:27:55,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1861 transitions. [2022-07-19 21:27:55,193 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8799054373522459 [2022-07-19 21:27:55,193 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1861 transitions. [2022-07-19 21:27:55,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1861 transitions. [2022-07-19 21:27:55,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:55,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1861 transitions. [2022-07-19 21:27:55,195 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 206.77777777777777) internal successors, (1861), 9 states have internal predecessors, (1861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:55,196 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:55,197 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 235.0) internal successors, (2350), 10 states have internal predecessors, (2350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:55,197 INFO L186 Difference]: Start difference. First operand has 738 places, 675 transitions, 10939 flow. Second operand 9 states and 1861 transitions. [2022-07-19 21:27:55,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 695 transitions, 11076 flow [2022-07-19 21:27:55,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 695 transitions, 10500 flow, removed 132 selfloop flow, removed 62 redundant places. [2022-07-19 21:27:55,634 INFO L242 Difference]: Finished difference. Result has 688 places, 220 transitions, 786 flow [2022-07-19 21:27:55,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10363, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=675, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=675, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=786, PETRI_PLACES=688, PETRI_TRANSITIONS=220} [2022-07-19 21:27:55,636 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 474 predicate places. [2022-07-19 21:27:55,636 INFO L495 AbstractCegarLoop]: Abstraction has has 688 places, 220 transitions, 786 flow [2022-07-19 21:27:55,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 204.85714285714286) internal successors, (1434), 7 states have internal predecessors, (1434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:55,636 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:55,637 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:55,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 21:27:55,637 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:55,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:55,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1449884105, now seen corresponding path program 1 times [2022-07-19 21:27:55,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:55,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004452320] [2022-07-19 21:27:55,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:55,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:55,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:55,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:55,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004452320] [2022-07-19 21:27:55,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2004452320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:55,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:55,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:55,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629097890] [2022-07-19 21:27:55,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:55,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:55,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:55,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:55,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:55,727 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:55,728 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 220 transitions, 786 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:55,728 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:55,728 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:55,728 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:56,301 INFO L129 PetriNetUnfolder]: 460/1907 cut-off events. [2022-07-19 21:27:56,302 INFO L130 PetriNetUnfolder]: For 5592/5633 co-relation queries the response was YES. [2022-07-19 21:27:56,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5251 conditions, 1907 events. 460/1907 cut-off events. For 5592/5633 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 15090 event pairs, 190 based on Foata normal form. 11/1809 useless extension candidates. Maximal degree in co-relation 5091. Up to 486 conditions per place. [2022-07-19 21:27:56,325 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 86 selfloop transitions, 33 changer transitions 28/328 dead transitions. [2022-07-19 21:27:56,325 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 328 transitions, 1567 flow [2022-07-19 21:27:56,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:27:56,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:27:56,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4790 transitions. [2022-07-19 21:27:56,328 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.849290780141844 [2022-07-19 21:27:56,328 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4790 transitions. [2022-07-19 21:27:56,328 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4790 transitions. [2022-07-19 21:27:56,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:56,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4790 transitions. [2022-07-19 21:27:56,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.58333333333334) internal successors, (4790), 24 states have internal predecessors, (4790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:56,334 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:56,334 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:56,334 INFO L186 Difference]: Start difference. First operand has 688 places, 220 transitions, 786 flow. Second operand 24 states and 4790 transitions. [2022-07-19 21:27:56,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 328 transitions, 1567 flow [2022-07-19 21:27:56,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 328 transitions, 1265 flow, removed 123 selfloop flow, removed 72 redundant places. [2022-07-19 21:27:56,358 INFO L242 Difference]: Finished difference. Result has 353 places, 250 transitions, 880 flow [2022-07-19 21:27:56,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=607, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=880, PETRI_PLACES=353, PETRI_TRANSITIONS=250} [2022-07-19 21:27:56,359 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 139 predicate places. [2022-07-19 21:27:56,359 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 250 transitions, 880 flow [2022-07-19 21:27:56,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:56,360 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:56,360 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:56,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 21:27:56,360 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:56,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:56,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1247485979, now seen corresponding path program 2 times [2022-07-19 21:27:56,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:56,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270858884] [2022-07-19 21:27:56,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:56,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:56,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:56,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:56,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:56,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270858884] [2022-07-19 21:27:56,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270858884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:56,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:56,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:56,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819605796] [2022-07-19 21:27:56,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:56,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:56,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:56,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:56,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:56,447 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:56,448 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 250 transitions, 880 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:56,448 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:56,448 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:56,448 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:56,923 INFO L129 PetriNetUnfolder]: 533/2184 cut-off events. [2022-07-19 21:27:56,923 INFO L130 PetriNetUnfolder]: For 4210/4251 co-relation queries the response was YES. [2022-07-19 21:27:56,952 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6348 conditions, 2184 events. 533/2184 cut-off events. For 4210/4251 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 17856 event pairs, 251 based on Foata normal form. 7/2037 useless extension candidates. Maximal degree in co-relation 6228. Up to 673 conditions per place. [2022-07-19 21:27:56,957 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 85 selfloop transitions, 36 changer transitions 16/318 dead transitions. [2022-07-19 21:27:56,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 318 transitions, 1593 flow [2022-07-19 21:27:56,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:27:56,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:27:56,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3198 transitions. [2022-07-19 21:27:56,959 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.850531914893617 [2022-07-19 21:27:56,959 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3198 transitions. [2022-07-19 21:27:56,959 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3198 transitions. [2022-07-19 21:27:56,960 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:56,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3198 transitions. [2022-07-19 21:27:56,962 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.875) internal successors, (3198), 16 states have internal predecessors, (3198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:56,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:56,964 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:56,964 INFO L186 Difference]: Start difference. First operand has 353 places, 250 transitions, 880 flow. Second operand 16 states and 3198 transitions. [2022-07-19 21:27:56,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 318 transitions, 1593 flow [2022-07-19 21:27:56,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 318 transitions, 1553 flow, removed 20 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:56,983 INFO L242 Difference]: Finished difference. Result has 375 places, 274 transitions, 1236 flow [2022-07-19 21:27:56,983 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1236, PETRI_PLACES=375, PETRI_TRANSITIONS=274} [2022-07-19 21:27:56,985 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 161 predicate places. [2022-07-19 21:27:56,986 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 274 transitions, 1236 flow [2022-07-19 21:27:56,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:56,986 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:56,986 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:56,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-19 21:27:56,986 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:56,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:56,987 INFO L85 PathProgramCache]: Analyzing trace with hash -582070785, now seen corresponding path program 3 times [2022-07-19 21:27:56,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:56,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142920692] [2022-07-19 21:27:56,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:56,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:57,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:57,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:57,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:57,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142920692] [2022-07-19 21:27:57,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142920692] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:57,078 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:57,078 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:57,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072856158] [2022-07-19 21:27:57,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:57,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:57,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:57,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:57,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:57,080 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:57,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 274 transitions, 1236 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:57,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:57,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:57,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:57,586 INFO L129 PetriNetUnfolder]: 597/2436 cut-off events. [2022-07-19 21:27:57,586 INFO L130 PetriNetUnfolder]: For 8402/8560 co-relation queries the response was YES. [2022-07-19 21:27:57,618 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8209 conditions, 2436 events. 597/2436 cut-off events. For 8402/8560 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 20896 event pairs, 223 based on Foata normal form. 18/2293 useless extension candidates. Maximal degree in co-relation 8079. Up to 687 conditions per place. [2022-07-19 21:27:57,624 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 108 selfloop transitions, 45 changer transitions 14/348 dead transitions. [2022-07-19 21:27:57,625 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 388 places, 348 transitions, 2213 flow [2022-07-19 21:27:57,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:27:57,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:27:57,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 3197 transitions. [2022-07-19 21:27:57,627 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8502659574468086 [2022-07-19 21:27:57,627 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 3197 transitions. [2022-07-19 21:27:57,627 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 3197 transitions. [2022-07-19 21:27:57,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:57,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 3197 transitions. [2022-07-19 21:27:57,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 199.8125) internal successors, (3197), 16 states have internal predecessors, (3197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:57,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:57,632 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 235.0) internal successors, (3995), 17 states have internal predecessors, (3995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:57,632 INFO L186 Difference]: Start difference. First operand has 375 places, 274 transitions, 1236 flow. Second operand 16 states and 3197 transitions. [2022-07-19 21:27:57,632 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 388 places, 348 transitions, 2213 flow [2022-07-19 21:27:57,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 348 transitions, 1987 flow, removed 113 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:57,684 INFO L242 Difference]: Finished difference. Result has 396 places, 294 transitions, 1467 flow [2022-07-19 21:27:57,684 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1084, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1467, PETRI_PLACES=396, PETRI_TRANSITIONS=294} [2022-07-19 21:27:57,684 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 182 predicate places. [2022-07-19 21:27:57,684 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 294 transitions, 1467 flow [2022-07-19 21:27:57,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:57,685 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:57,685 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:57,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 21:27:57,685 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:57,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:57,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1454581957, now seen corresponding path program 4 times [2022-07-19 21:27:57,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:57,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518104205] [2022-07-19 21:27:57,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:57,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:57,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:57,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:57,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518104205] [2022-07-19 21:27:57,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518104205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:57,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:57,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:57,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219369478] [2022-07-19 21:27:57,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:57,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:57,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:57,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:57,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:57,763 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:57,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 294 transitions, 1467 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:57,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:57,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:57,764 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:58,479 INFO L129 PetriNetUnfolder]: 742/2909 cut-off events. [2022-07-19 21:27:58,479 INFO L130 PetriNetUnfolder]: For 12491/12688 co-relation queries the response was YES. [2022-07-19 21:27:58,529 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10561 conditions, 2909 events. 742/2909 cut-off events. For 12491/12688 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 26182 event pairs, 318 based on Foata normal form. 7/2716 useless extension candidates. Maximal degree in co-relation 10422. Up to 741 conditions per place. [2022-07-19 21:27:58,539 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 130 selfloop transitions, 50 changer transitions 23/384 dead transitions. [2022-07-19 21:27:58,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 384 transitions, 2746 flow [2022-07-19 21:27:58,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:27:58,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:27:58,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4189 transitions. [2022-07-19 21:27:58,543 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8488348530901723 [2022-07-19 21:27:58,543 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4189 transitions. [2022-07-19 21:27:58,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4189 transitions. [2022-07-19 21:27:58,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:58,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4189 transitions. [2022-07-19 21:27:58,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.47619047619048) internal successors, (4189), 21 states have internal predecessors, (4189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:58,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:58,551 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:58,551 INFO L186 Difference]: Start difference. First operand has 396 places, 294 transitions, 1467 flow. Second operand 21 states and 4189 transitions. [2022-07-19 21:27:58,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 384 transitions, 2746 flow [2022-07-19 21:27:58,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 384 transitions, 2602 flow, removed 64 selfloop flow, removed 3 redundant places. [2022-07-19 21:27:58,614 INFO L242 Difference]: Finished difference. Result has 426 places, 328 transitions, 2034 flow [2022-07-19 21:27:58,615 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=391, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=2034, PETRI_PLACES=426, PETRI_TRANSITIONS=328} [2022-07-19 21:27:58,615 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 212 predicate places. [2022-07-19 21:27:58,615 INFO L495 AbstractCegarLoop]: Abstraction has has 426 places, 328 transitions, 2034 flow [2022-07-19 21:27:58,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:58,616 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:58,616 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:58,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-19 21:27:58,616 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:58,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:58,617 INFO L85 PathProgramCache]: Analyzing trace with hash -897077963, now seen corresponding path program 5 times [2022-07-19 21:27:58,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:58,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592204894] [2022-07-19 21:27:58,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:58,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:58,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:58,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592204894] [2022-07-19 21:27:58,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592204894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:58,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:58,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:58,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248747425] [2022-07-19 21:27:58,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:58,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:58,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:58,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:58,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:58,707 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:58,708 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 426 places, 328 transitions, 2034 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:58,708 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:58,709 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:58,709 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:27:59,439 INFO L129 PetriNetUnfolder]: 784/3115 cut-off events. [2022-07-19 21:27:59,439 INFO L130 PetriNetUnfolder]: For 19730/19811 co-relation queries the response was YES. [2022-07-19 21:27:59,493 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12420 conditions, 3115 events. 784/3115 cut-off events. For 19730/19811 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 28929 event pairs, 303 based on Foata normal form. 15/2913 useless extension candidates. Maximal degree in co-relation 12268. Up to 811 conditions per place. [2022-07-19 21:27:59,503 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 141 selfloop transitions, 60 changer transitions 22/404 dead transitions. [2022-07-19 21:27:59,503 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 404 transitions, 3334 flow [2022-07-19 21:27:59,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:27:59,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:27:59,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3990 transitions. [2022-07-19 21:27:59,505 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8489361702127659 [2022-07-19 21:27:59,505 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3990 transitions. [2022-07-19 21:27:59,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3990 transitions. [2022-07-19 21:27:59,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:27:59,506 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3990 transitions. [2022-07-19 21:27:59,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.5) internal successors, (3990), 20 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:59,512 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:59,512 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:59,513 INFO L186 Difference]: Start difference. First operand has 426 places, 328 transitions, 2034 flow. Second operand 20 states and 3990 transitions. [2022-07-19 21:27:59,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 404 transitions, 3334 flow [2022-07-19 21:27:59,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 404 transitions, 3006 flow, removed 164 selfloop flow, removed 2 redundant places. [2022-07-19 21:27:59,651 INFO L242 Difference]: Finished difference. Result has 456 places, 360 transitions, 2475 flow [2022-07-19 21:27:59,652 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=1790, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=289, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2475, PETRI_PLACES=456, PETRI_TRANSITIONS=360} [2022-07-19 21:27:59,652 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 242 predicate places. [2022-07-19 21:27:59,652 INFO L495 AbstractCegarLoop]: Abstraction has has 456 places, 360 transitions, 2475 flow [2022-07-19 21:27:59,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:59,653 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:27:59,653 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:27:59,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-07-19 21:27:59,653 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:27:59,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:27:59,653 INFO L85 PathProgramCache]: Analyzing trace with hash -2122342847, now seen corresponding path program 6 times [2022-07-19 21:27:59,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:27:59,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87620888] [2022-07-19 21:27:59,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:27:59,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:27:59,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:27:59,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:27:59,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:27:59,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87620888] [2022-07-19 21:27:59,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87620888] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:27:59,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:27:59,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:27:59,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2087446404] [2022-07-19 21:27:59,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:27:59,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:27:59,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:27:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:27:59,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:27:59,733 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:27:59,734 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 456 places, 360 transitions, 2475 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:27:59,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:27:59,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:27:59,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:00,661 INFO L129 PetriNetUnfolder]: 829/3326 cut-off events. [2022-07-19 21:28:00,661 INFO L130 PetriNetUnfolder]: For 23646/23720 co-relation queries the response was YES. [2022-07-19 21:28:00,721 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13646 conditions, 3326 events. 829/3326 cut-off events. For 23646/23720 co-relation queries the response was YES. Maximal size of possible extension queue 211. Compared 31412 event pairs, 244 based on Foata normal form. 7/3108 useless extension candidates. Maximal degree in co-relation 13480. Up to 578 conditions per place. [2022-07-19 21:28:00,731 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 155 selfloop transitions, 103 changer transitions 26/465 dead transitions. [2022-07-19 21:28:00,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 465 transitions, 4043 flow [2022-07-19 21:28:00,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:28:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-07-19 21:28:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4782 transitions. [2022-07-19 21:28:00,733 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.847872340425532 [2022-07-19 21:28:00,734 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4782 transitions. [2022-07-19 21:28:00,734 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4782 transitions. [2022-07-19 21:28:00,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:00,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4782 transitions. [2022-07-19 21:28:00,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 199.25) internal successors, (4782), 24 states have internal predecessors, (4782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:00,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:00,740 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 235.0) internal successors, (5875), 25 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:00,740 INFO L186 Difference]: Start difference. First operand has 456 places, 360 transitions, 2475 flow. Second operand 24 states and 4782 transitions. [2022-07-19 21:28:00,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 465 transitions, 4043 flow [2022-07-19 21:28:00,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 465 transitions, 3739 flow, removed 152 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:00,900 INFO L242 Difference]: Finished difference. Result has 494 places, 386 transitions, 2979 flow [2022-07-19 21:28:00,901 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2249, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2979, PETRI_PLACES=494, PETRI_TRANSITIONS=386} [2022-07-19 21:28:00,901 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 280 predicate places. [2022-07-19 21:28:00,901 INFO L495 AbstractCegarLoop]: Abstraction has has 494 places, 386 transitions, 2979 flow [2022-07-19 21:28:00,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:00,902 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:00,902 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:00,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-07-19 21:28:00,902 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:00,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:00,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1817715829, now seen corresponding path program 7 times [2022-07-19 21:28:00,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:00,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057995578] [2022-07-19 21:28:00,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:00,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:00,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:00,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:00,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057995578] [2022-07-19 21:28:00,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057995578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:00,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:00,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:00,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387027331] [2022-07-19 21:28:00,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:00,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:00,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:00,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:00,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:00,993 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:00,994 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 494 places, 386 transitions, 2979 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:00,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:00,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:00,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:01,978 INFO L129 PetriNetUnfolder]: 863/3579 cut-off events. [2022-07-19 21:28:01,980 INFO L130 PetriNetUnfolder]: For 30286/30599 co-relation queries the response was YES. [2022-07-19 21:28:02,050 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15153 conditions, 3579 events. 863/3579 cut-off events. For 30286/30599 co-relation queries the response was YES. Maximal size of possible extension queue 223. Compared 34456 event pairs, 249 based on Foata normal form. 40/3382 useless extension candidates. Maximal degree in co-relation 14969. Up to 875 conditions per place. [2022-07-19 21:28:02,061 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 166 selfloop transitions, 97 changer transitions 24/468 dead transitions. [2022-07-19 21:28:02,061 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 513 places, 468 transitions, 4508 flow [2022-07-19 21:28:02,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:28:02,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:28:02,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4384 transitions. [2022-07-19 21:28:02,067 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8479690522243714 [2022-07-19 21:28:02,067 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4384 transitions. [2022-07-19 21:28:02,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4384 transitions. [2022-07-19 21:28:02,068 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:02,068 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4384 transitions. [2022-07-19 21:28:02,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.27272727272728) internal successors, (4384), 22 states have internal predecessors, (4384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:02,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:02,074 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:02,074 INFO L186 Difference]: Start difference. First operand has 494 places, 386 transitions, 2979 flow. Second operand 22 states and 4384 transitions. [2022-07-19 21:28:02,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 513 places, 468 transitions, 4508 flow [2022-07-19 21:28:02,253 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 510 places, 468 transitions, 4438 flow, removed 32 selfloop flow, removed 3 redundant places. [2022-07-19 21:28:02,260 INFO L242 Difference]: Finished difference. Result has 523 places, 410 transitions, 3643 flow [2022-07-19 21:28:02,260 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=2927, PETRI_DIFFERENCE_MINUEND_PLACES=489, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=386, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=304, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3643, PETRI_PLACES=523, PETRI_TRANSITIONS=410} [2022-07-19 21:28:02,261 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 309 predicate places. [2022-07-19 21:28:02,261 INFO L495 AbstractCegarLoop]: Abstraction has has 523 places, 410 transitions, 3643 flow [2022-07-19 21:28:02,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:02,261 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:02,262 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:02,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 21:28:02,262 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:02,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:02,262 INFO L85 PathProgramCache]: Analyzing trace with hash -2059723653, now seen corresponding path program 8 times [2022-07-19 21:28:02,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:02,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306898242] [2022-07-19 21:28:02,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:02,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:02,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:02,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:02,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306898242] [2022-07-19 21:28:02,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306898242] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:02,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:02,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:02,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712537264] [2022-07-19 21:28:02,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:02,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:02,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:02,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:02,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:02,347 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:02,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 523 places, 410 transitions, 3643 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:02,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:02,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:02,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:03,451 INFO L129 PetriNetUnfolder]: 902/3737 cut-off events. [2022-07-19 21:28:03,451 INFO L130 PetriNetUnfolder]: For 39164/39246 co-relation queries the response was YES. [2022-07-19 21:28:03,520 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17114 conditions, 3737 events. 902/3737 cut-off events. For 39164/39246 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 36997 event pairs, 270 based on Foata normal form. 18/3496 useless extension candidates. Maximal degree in co-relation 16919. Up to 977 conditions per place. [2022-07-19 21:28:03,530 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 182 selfloop transitions, 105 changer transitions 19/487 dead transitions. [2022-07-19 21:28:03,530 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 540 places, 487 transitions, 5223 flow [2022-07-19 21:28:03,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-19 21:28:03,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-07-19 21:28:03,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3987 transitions. [2022-07-19 21:28:03,533 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8482978723404255 [2022-07-19 21:28:03,533 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3987 transitions. [2022-07-19 21:28:03,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3987 transitions. [2022-07-19 21:28:03,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:03,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3987 transitions. [2022-07-19 21:28:03,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 199.35) internal successors, (3987), 20 states have internal predecessors, (3987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:03,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:03,539 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 235.0) internal successors, (4935), 21 states have internal predecessors, (4935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:03,539 INFO L186 Difference]: Start difference. First operand has 523 places, 410 transitions, 3643 flow. Second operand 20 states and 3987 transitions. [2022-07-19 21:28:03,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 540 places, 487 transitions, 5223 flow [2022-07-19 21:28:03,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 536 places, 487 transitions, 5018 flow, removed 95 selfloop flow, removed 4 redundant places. [2022-07-19 21:28:03,788 INFO L242 Difference]: Finished difference. Result has 550 places, 442 transitions, 4444 flow [2022-07-19 21:28:03,788 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=3444, PETRI_DIFFERENCE_MINUEND_PLACES=517, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=4444, PETRI_PLACES=550, PETRI_TRANSITIONS=442} [2022-07-19 21:28:03,788 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 336 predicate places. [2022-07-19 21:28:03,789 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 442 transitions, 4444 flow [2022-07-19 21:28:03,789 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:03,789 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:03,789 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:03,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-19 21:28:03,789 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:03,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:03,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1477857535, now seen corresponding path program 9 times [2022-07-19 21:28:03,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:03,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882413096] [2022-07-19 21:28:03,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:03,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:03,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:03,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:03,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:03,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882413096] [2022-07-19 21:28:03,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882413096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:03,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:03,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:03,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475302905] [2022-07-19 21:28:03,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:03,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:03,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:03,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:03,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:03,873 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:03,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 442 transitions, 4444 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:03,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:03,874 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:03,874 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:04,945 INFO L129 PetriNetUnfolder]: 899/3813 cut-off events. [2022-07-19 21:28:04,945 INFO L130 PetriNetUnfolder]: For 42823/43110 co-relation queries the response was YES. [2022-07-19 21:28:05,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17843 conditions, 3813 events. 899/3813 cut-off events. For 42823/43110 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 37696 event pairs, 258 based on Foata normal form. 32/3586 useless extension candidates. Maximal degree in co-relation 17637. Up to 971 conditions per place. [2022-07-19 21:28:05,042 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 183 selfloop transitions, 116 changer transitions 23/503 dead transitions. [2022-07-19 21:28:05,043 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 565 places, 503 transitions, 5885 flow [2022-07-19 21:28:05,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:28:05,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:28:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3592 transitions. [2022-07-19 21:28:05,045 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8491725768321513 [2022-07-19 21:28:05,045 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3592 transitions. [2022-07-19 21:28:05,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3592 transitions. [2022-07-19 21:28:05,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:05,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3592 transitions. [2022-07-19 21:28:05,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.55555555555554) internal successors, (3592), 18 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:05,049 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:05,049 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:05,049 INFO L186 Difference]: Start difference. First operand has 550 places, 442 transitions, 4444 flow. Second operand 18 states and 3592 transitions. [2022-07-19 21:28:05,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 565 places, 503 transitions, 5885 flow [2022-07-19 21:28:05,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 563 places, 503 transitions, 5493 flow, removed 196 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:05,396 INFO L242 Difference]: Finished difference. Result has 570 places, 451 transitions, 4694 flow [2022-07-19 21:28:05,396 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4226, PETRI_DIFFERENCE_MINUEND_PLACES=546, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=4694, PETRI_PLACES=570, PETRI_TRANSITIONS=451} [2022-07-19 21:28:05,397 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 356 predicate places. [2022-07-19 21:28:05,397 INFO L495 AbstractCegarLoop]: Abstraction has has 570 places, 451 transitions, 4694 flow [2022-07-19 21:28:05,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:05,397 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:05,398 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:05,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-19 21:28:05,398 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:05,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:05,398 INFO L85 PathProgramCache]: Analyzing trace with hash -916504195, now seen corresponding path program 10 times [2022-07-19 21:28:05,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:05,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274558020] [2022-07-19 21:28:05,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:05,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:05,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:05,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:05,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274558020] [2022-07-19 21:28:05,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274558020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:05,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:05,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:05,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639927154] [2022-07-19 21:28:05,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:05,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:05,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:05,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:05,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:05,488 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:05,489 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 570 places, 451 transitions, 4694 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:05,489 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:05,489 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:05,489 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:06,707 INFO L129 PetriNetUnfolder]: 957/4035 cut-off events. [2022-07-19 21:28:06,707 INFO L130 PetriNetUnfolder]: For 38816/38898 co-relation queries the response was YES. [2022-07-19 21:28:06,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19028 conditions, 4035 events. 957/4035 cut-off events. For 38816/38898 co-relation queries the response was YES. Maximal size of possible extension queue 258. Compared 41005 event pairs, 273 based on Foata normal form. 18/3772 useless extension candidates. Maximal degree in co-relation 18816. Up to 1020 conditions per place. [2022-07-19 21:28:06,814 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 201 selfloop transitions, 116 changer transitions 16/514 dead transitions. [2022-07-19 21:28:06,814 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 584 places, 514 transitions, 6167 flow [2022-07-19 21:28:06,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:28:06,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:28:06,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2022-07-19 21:28:06,816 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2022-07-19 21:28:06,816 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2022-07-19 21:28:06,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2022-07-19 21:28:06,817 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:06,817 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2022-07-19 21:28:06,819 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.8235294117647) internal successors, (3397), 17 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:06,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:06,820 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:06,821 INFO L186 Difference]: Start difference. First operand has 570 places, 451 transitions, 4694 flow. Second operand 17 states and 3397 transitions. [2022-07-19 21:28:06,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 584 places, 514 transitions, 6167 flow [2022-07-19 21:28:07,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 578 places, 514 transitions, 5981 flow, removed 46 selfloop flow, removed 6 redundant places. [2022-07-19 21:28:07,139 INFO L242 Difference]: Finished difference. Result has 586 places, 473 transitions, 5321 flow [2022-07-19 21:28:07,139 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=4522, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=451, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5321, PETRI_PLACES=586, PETRI_TRANSITIONS=473} [2022-07-19 21:28:07,139 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 372 predicate places. [2022-07-19 21:28:07,139 INFO L495 AbstractCegarLoop]: Abstraction has has 586 places, 473 transitions, 5321 flow [2022-07-19 21:28:07,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:07,140 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:07,140 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:07,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-19 21:28:07,141 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:07,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:07,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1806241857, now seen corresponding path program 11 times [2022-07-19 21:28:07,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:07,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457950022] [2022-07-19 21:28:07,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:07,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:07,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:07,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:07,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457950022] [2022-07-19 21:28:07,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457950022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:07,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:07,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:07,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246273784] [2022-07-19 21:28:07,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:07,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:07,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:07,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:07,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:07,229 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:07,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 586 places, 473 transitions, 5321 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:07,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:07,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:07,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:08,472 INFO L129 PetriNetUnfolder]: 993/4295 cut-off events. [2022-07-19 21:28:08,472 INFO L130 PetriNetUnfolder]: For 44684/44995 co-relation queries the response was YES. [2022-07-19 21:28:08,575 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20648 conditions, 4295 events. 993/4295 cut-off events. For 44684/44995 co-relation queries the response was YES. Maximal size of possible extension queue 271. Compared 44184 event pairs, 331 based on Foata normal form. 7/4009 useless extension candidates. Maximal degree in co-relation 20431. Up to 1076 conditions per place. [2022-07-19 21:28:08,589 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 224 selfloop transitions, 112 changer transitions 15/532 dead transitions. [2022-07-19 21:28:08,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 600 places, 532 transitions, 6809 flow [2022-07-19 21:28:08,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:28:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:28:08,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3397 transitions. [2022-07-19 21:28:08,591 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8503128911138924 [2022-07-19 21:28:08,591 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3397 transitions. [2022-07-19 21:28:08,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3397 transitions. [2022-07-19 21:28:08,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:08,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3397 transitions. [2022-07-19 21:28:08,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.8235294117647) internal successors, (3397), 17 states have internal predecessors, (3397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:08,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:08,596 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:08,596 INFO L186 Difference]: Start difference. First operand has 586 places, 473 transitions, 5321 flow. Second operand 17 states and 3397 transitions. [2022-07-19 21:28:08,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 600 places, 532 transitions, 6809 flow [2022-07-19 21:28:08,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 598 places, 532 transitions, 6637 flow, removed 86 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:08,988 INFO L242 Difference]: Finished difference. Result has 606 places, 495 transitions, 5934 flow [2022-07-19 21:28:08,988 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5155, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=473, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=5934, PETRI_PLACES=606, PETRI_TRANSITIONS=495} [2022-07-19 21:28:08,989 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 392 predicate places. [2022-07-19 21:28:08,989 INFO L495 AbstractCegarLoop]: Abstraction has has 606 places, 495 transitions, 5934 flow [2022-07-19 21:28:08,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:08,989 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:08,989 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:08,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-19 21:28:08,990 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:08,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:08,990 INFO L85 PathProgramCache]: Analyzing trace with hash 2040181781, now seen corresponding path program 12 times [2022-07-19 21:28:08,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:08,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112075439] [2022-07-19 21:28:08,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:08,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:09,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:09,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:09,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:09,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112075439] [2022-07-19 21:28:09,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112075439] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:09,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:09,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:09,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933125763] [2022-07-19 21:28:09,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:09,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:09,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:09,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:09,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:09,075 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:09,076 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 606 places, 495 transitions, 5934 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:09,076 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:09,076 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:09,076 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:10,449 INFO L129 PetriNetUnfolder]: 998/4356 cut-off events. [2022-07-19 21:28:10,449 INFO L130 PetriNetUnfolder]: For 47007/47322 co-relation queries the response was YES. [2022-07-19 21:28:10,542 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21315 conditions, 4356 events. 998/4356 cut-off events. For 47007/47322 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 45241 event pairs, 291 based on Foata normal form. 7/4067 useless extension candidates. Maximal degree in co-relation 21091. Up to 1098 conditions per place. [2022-07-19 21:28:10,556 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 209 selfloop transitions, 130 changer transitions 20/540 dead transitions. [2022-07-19 21:28:10,556 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 621 places, 540 transitions, 7104 flow [2022-07-19 21:28:10,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:28:10,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:28:10,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3592 transitions. [2022-07-19 21:28:10,558 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8491725768321513 [2022-07-19 21:28:10,558 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3592 transitions. [2022-07-19 21:28:10,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3592 transitions. [2022-07-19 21:28:10,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:10,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3592 transitions. [2022-07-19 21:28:10,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.55555555555554) internal successors, (3592), 18 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:10,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:10,562 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:10,563 INFO L186 Difference]: Start difference. First operand has 606 places, 495 transitions, 5934 flow. Second operand 18 states and 3592 transitions. [2022-07-19 21:28:10,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 621 places, 540 transitions, 7104 flow [2022-07-19 21:28:10,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 540 transitions, 6909 flow, removed 71 selfloop flow, removed 3 redundant places. [2022-07-19 21:28:10,964 INFO L242 Difference]: Finished difference. Result has 623 places, 505 transitions, 6257 flow [2022-07-19 21:28:10,965 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=5747, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=495, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6257, PETRI_PLACES=623, PETRI_TRANSITIONS=505} [2022-07-19 21:28:10,965 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 409 predicate places. [2022-07-19 21:28:10,965 INFO L495 AbstractCegarLoop]: Abstraction has has 623 places, 505 transitions, 6257 flow [2022-07-19 21:28:10,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:10,966 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:10,966 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:10,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-19 21:28:10,966 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:10,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:10,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1027717331, now seen corresponding path program 13 times [2022-07-19 21:28:10,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:10,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104329362] [2022-07-19 21:28:10,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:10,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:11,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:11,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104329362] [2022-07-19 21:28:11,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104329362] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:11,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:11,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:11,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722485334] [2022-07-19 21:28:11,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:11,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:11,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:11,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:11,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:11,049 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:11,051 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 505 transitions, 6257 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:11,051 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:11,051 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:11,051 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:12,404 INFO L129 PetriNetUnfolder]: 995/4414 cut-off events. [2022-07-19 21:28:12,404 INFO L130 PetriNetUnfolder]: For 49836/50152 co-relation queries the response was YES. [2022-07-19 21:28:12,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21520 conditions, 4414 events. 995/4414 cut-off events. For 49836/50152 co-relation queries the response was YES. Maximal size of possible extension queue 276. Compared 46156 event pairs, 336 based on Foata normal form. 7/4122 useless extension candidates. Maximal degree in co-relation 21293. Up to 1088 conditions per place. [2022-07-19 21:28:12,518 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 224 selfloop transitions, 119 changer transitions 24/548 dead transitions. [2022-07-19 21:28:12,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 638 places, 548 transitions, 7402 flow [2022-07-19 21:28:12,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:28:12,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:28:12,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3596 transitions. [2022-07-19 21:28:12,520 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8501182033096927 [2022-07-19 21:28:12,520 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3596 transitions. [2022-07-19 21:28:12,520 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3596 transitions. [2022-07-19 21:28:12,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:12,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3596 transitions. [2022-07-19 21:28:12,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.77777777777777) internal successors, (3596), 18 states have internal predecessors, (3596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:12,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:12,525 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:12,525 INFO L186 Difference]: Start difference. First operand has 623 places, 505 transitions, 6257 flow. Second operand 18 states and 3596 transitions. [2022-07-19 21:28:12,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 638 places, 548 transitions, 7402 flow [2022-07-19 21:28:12,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 548 transitions, 7252 flow, removed 39 selfloop flow, removed 7 redundant places. [2022-07-19 21:28:12,911 INFO L242 Difference]: Finished difference. Result has 636 places, 512 transitions, 6569 flow [2022-07-19 21:28:12,911 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=6113, PETRI_DIFFERENCE_MINUEND_PLACES=614, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=505, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=389, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=6569, PETRI_PLACES=636, PETRI_TRANSITIONS=512} [2022-07-19 21:28:12,912 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 422 predicate places. [2022-07-19 21:28:12,912 INFO L495 AbstractCegarLoop]: Abstraction has has 636 places, 512 transitions, 6569 flow [2022-07-19 21:28:12,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:12,912 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:12,913 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:12,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-07-19 21:28:12,913 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:12,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:12,913 INFO L85 PathProgramCache]: Analyzing trace with hash 228257503, now seen corresponding path program 14 times [2022-07-19 21:28:12,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:12,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21422973] [2022-07-19 21:28:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:12,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:12,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:12,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:12,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21422973] [2022-07-19 21:28:12,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21422973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:12,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:12,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:12,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610253490] [2022-07-19 21:28:12,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:12,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:12,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:12,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:12,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:12,992 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:12,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 636 places, 512 transitions, 6569 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:12,993 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:12,993 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:12,993 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:14,438 INFO L129 PetriNetUnfolder]: 1052/4686 cut-off events. [2022-07-19 21:28:14,439 INFO L130 PetriNetUnfolder]: For 57868/57950 co-relation queries the response was YES. [2022-07-19 21:28:14,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23109 conditions, 4686 events. 1052/4686 cut-off events. For 57868/57950 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 49846 event pairs, 318 based on Foata normal form. 7/4380 useless extension candidates. Maximal degree in co-relation 22883. Up to 1086 conditions per place. [2022-07-19 21:28:14,564 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 221 selfloop transitions, 156 changer transitions 23/581 dead transitions. [2022-07-19 21:28:14,564 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 581 transitions, 8197 flow [2022-07-19 21:28:14,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:28:14,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2022-07-19 21:28:14,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 4380 transitions. [2022-07-19 21:28:14,566 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8471953578336557 [2022-07-19 21:28:14,567 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 4380 transitions. [2022-07-19 21:28:14,567 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 4380 transitions. [2022-07-19 21:28:14,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:14,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 4380 transitions. [2022-07-19 21:28:14,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 199.0909090909091) internal successors, (4380), 22 states have internal predecessors, (4380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:14,572 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:14,573 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 235.0) internal successors, (5405), 23 states have internal predecessors, (5405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:14,573 INFO L186 Difference]: Start difference. First operand has 636 places, 512 transitions, 6569 flow. Second operand 22 states and 4380 transitions. [2022-07-19 21:28:14,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 581 transitions, 8197 flow [2022-07-19 21:28:14,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 647 places, 581 transitions, 8044 flow, removed 63 selfloop flow, removed 8 redundant places. [2022-07-19 21:28:14,974 INFO L242 Difference]: Finished difference. Result has 661 places, 540 transitions, 7339 flow [2022-07-19 21:28:14,974 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=6418, PETRI_DIFFERENCE_MINUEND_PLACES=626, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=7339, PETRI_PLACES=661, PETRI_TRANSITIONS=540} [2022-07-19 21:28:14,975 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 447 predicate places. [2022-07-19 21:28:14,975 INFO L495 AbstractCegarLoop]: Abstraction has has 661 places, 540 transitions, 7339 flow [2022-07-19 21:28:14,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:14,976 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:14,976 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:14,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-19 21:28:14,976 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:14,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:14,977 INFO L85 PathProgramCache]: Analyzing trace with hash -794204981, now seen corresponding path program 15 times [2022-07-19 21:28:14,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:14,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438162534] [2022-07-19 21:28:14,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:14,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:14,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:15,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:15,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:15,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438162534] [2022-07-19 21:28:15,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438162534] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:15,049 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:15,049 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:15,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425231700] [2022-07-19 21:28:15,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:15,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:15,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:15,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:15,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:15,052 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:15,053 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 540 transitions, 7339 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:15,053 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:15,053 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:15,053 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:16,721 INFO L129 PetriNetUnfolder]: 1086/4825 cut-off events. [2022-07-19 21:28:16,721 INFO L130 PetriNetUnfolder]: For 65716/65790 co-relation queries the response was YES. [2022-07-19 21:28:16,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24853 conditions, 4825 events. 1086/4825 cut-off events. For 65716/65790 co-relation queries the response was YES. Maximal size of possible extension queue 308. Compared 52488 event pairs, 293 based on Foata normal form. 7/4504 useless extension candidates. Maximal degree in co-relation 24620. Up to 1125 conditions per place. [2022-07-19 21:28:16,833 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 292 selfloop transitions, 110 changer transitions 21/604 dead transitions. [2022-07-19 21:28:16,833 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 679 places, 604 transitions, 9128 flow [2022-07-19 21:28:16,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:28:16,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-07-19 21:28:16,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4185 transitions. [2022-07-19 21:28:16,835 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8480243161094225 [2022-07-19 21:28:16,835 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4185 transitions. [2022-07-19 21:28:16,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4185 transitions. [2022-07-19 21:28:16,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:16,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4185 transitions. [2022-07-19 21:28:16,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 199.28571428571428) internal successors, (4185), 21 states have internal predecessors, (4185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:16,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:16,841 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 235.0) internal successors, (5170), 22 states have internal predecessors, (5170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:16,841 INFO L186 Difference]: Start difference. First operand has 661 places, 540 transitions, 7339 flow. Second operand 21 states and 4185 transitions. [2022-07-19 21:28:16,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 679 places, 604 transitions, 9128 flow [2022-07-19 21:28:17,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 604 transitions, 9042 flow, removed 43 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:17,272 INFO L242 Difference]: Finished difference. Result has 691 places, 566 transitions, 8214 flow [2022-07-19 21:28:17,273 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=7255, PETRI_DIFFERENCE_MINUEND_PLACES=657, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=540, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=8214, PETRI_PLACES=691, PETRI_TRANSITIONS=566} [2022-07-19 21:28:17,273 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 477 predicate places. [2022-07-19 21:28:17,273 INFO L495 AbstractCegarLoop]: Abstraction has has 691 places, 566 transitions, 8214 flow [2022-07-19 21:28:17,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:17,274 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:17,274 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:17,274 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-19 21:28:17,274 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:17,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:17,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1623238491, now seen corresponding path program 16 times [2022-07-19 21:28:17,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:17,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257726844] [2022-07-19 21:28:17,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:17,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:17,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:17,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:17,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:17,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257726844] [2022-07-19 21:28:17,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257726844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:17,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:17,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:17,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482778186] [2022-07-19 21:28:17,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:17,341 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:17,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:17,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:17,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:17,343 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:17,345 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 691 places, 566 transitions, 8214 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:17,345 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:17,345 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:17,345 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:18,985 INFO L129 PetriNetUnfolder]: 1085/4897 cut-off events. [2022-07-19 21:28:18,985 INFO L130 PetriNetUnfolder]: For 71335/71409 co-relation queries the response was YES. [2022-07-19 21:28:19,114 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25770 conditions, 4897 events. 1085/4897 cut-off events. For 71335/71409 co-relation queries the response was YES. Maximal size of possible extension queue 310. Compared 53567 event pairs, 291 based on Foata normal form. 7/4574 useless extension candidates. Maximal degree in co-relation 25524. Up to 1178 conditions per place. [2022-07-19 21:28:19,128 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 238 selfloop transitions, 166 changer transitions 23/608 dead transitions. [2022-07-19 21:28:19,128 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 706 places, 608 transitions, 9534 flow [2022-07-19 21:28:19,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:28:19,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:28:19,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3590 transitions. [2022-07-19 21:28:19,130 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8486997635933806 [2022-07-19 21:28:19,130 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3590 transitions. [2022-07-19 21:28:19,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3590 transitions. [2022-07-19 21:28:19,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:19,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3590 transitions. [2022-07-19 21:28:19,132 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.44444444444446) internal successors, (3590), 18 states have internal predecessors, (3590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:19,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:19,135 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:19,135 INFO L186 Difference]: Start difference. First operand has 691 places, 566 transitions, 8214 flow. Second operand 18 states and 3590 transitions. [2022-07-19 21:28:19,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 706 places, 608 transitions, 9534 flow [2022-07-19 21:28:19,625 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 704 places, 608 transitions, 9326 flow, removed 104 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:19,634 INFO L242 Difference]: Finished difference. Result has 711 places, 575 transitions, 8599 flow [2022-07-19 21:28:19,635 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8008, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=566, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=158, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=8599, PETRI_PLACES=711, PETRI_TRANSITIONS=575} [2022-07-19 21:28:19,635 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 497 predicate places. [2022-07-19 21:28:19,635 INFO L495 AbstractCegarLoop]: Abstraction has has 711 places, 575 transitions, 8599 flow [2022-07-19 21:28:19,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:19,636 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:19,636 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:19,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-07-19 21:28:19,636 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:19,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:19,637 INFO L85 PathProgramCache]: Analyzing trace with hash 603203705, now seen corresponding path program 17 times [2022-07-19 21:28:19,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:19,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938468317] [2022-07-19 21:28:19,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:19,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:19,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:19,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938468317] [2022-07-19 21:28:19,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938468317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:19,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:19,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:19,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338421005] [2022-07-19 21:28:19,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:19,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:19,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:19,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:19,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:19,710 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:19,710 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 711 places, 575 transitions, 8599 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:19,710 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:19,711 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:19,711 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:21,438 INFO L129 PetriNetUnfolder]: 1140/5189 cut-off events. [2022-07-19 21:28:21,438 INFO L130 PetriNetUnfolder]: For 80030/80104 co-relation queries the response was YES. [2022-07-19 21:28:21,569 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27921 conditions, 5189 events. 1140/5189 cut-off events. For 80030/80104 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 57300 event pairs, 366 based on Foata normal form. 7/4843 useless extension candidates. Maximal degree in co-relation 27669. Up to 1221 conditions per place. [2022-07-19 21:28:21,585 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 296 selfloop transitions, 135 changer transitions 16/628 dead transitions. [2022-07-19 21:28:21,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 628 transitions, 10280 flow [2022-07-19 21:28:21,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:28:21,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:28:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3395 transitions. [2022-07-19 21:28:21,587 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8498122653316645 [2022-07-19 21:28:21,587 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3395 transitions. [2022-07-19 21:28:21,587 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3395 transitions. [2022-07-19 21:28:21,588 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:21,588 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3395 transitions. [2022-07-19 21:28:21,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.7058823529412) internal successors, (3395), 17 states have internal predecessors, (3395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:21,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:21,592 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:21,592 INFO L186 Difference]: Start difference. First operand has 711 places, 575 transitions, 8599 flow. Second operand 17 states and 3395 transitions. [2022-07-19 21:28:21,592 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 628 transitions, 10280 flow [2022-07-19 21:28:22,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 719 places, 628 transitions, 10024 flow, removed 50 selfloop flow, removed 6 redundant places. [2022-07-19 21:28:22,240 INFO L242 Difference]: Finished difference. Result has 727 places, 597 transitions, 9246 flow [2022-07-19 21:28:22,241 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=8357, PETRI_DIFFERENCE_MINUEND_PLACES=703, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=575, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9246, PETRI_PLACES=727, PETRI_TRANSITIONS=597} [2022-07-19 21:28:22,242 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 513 predicate places. [2022-07-19 21:28:22,242 INFO L495 AbstractCegarLoop]: Abstraction has has 727 places, 597 transitions, 9246 flow [2022-07-19 21:28:22,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:22,242 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:22,242 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:22,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-07-19 21:28:22,243 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:22,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:22,243 INFO L85 PathProgramCache]: Analyzing trace with hash -779172371, now seen corresponding path program 18 times [2022-07-19 21:28:22,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:22,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793400375] [2022-07-19 21:28:22,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:22,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:22,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:22,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:22,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:22,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793400375] [2022-07-19 21:28:22,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793400375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:22,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:22,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:22,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802708416] [2022-07-19 21:28:22,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:22,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:22,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:22,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:22,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:22,330 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:22,331 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 597 transitions, 9246 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:22,331 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:22,331 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:22,331 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:24,126 INFO L129 PetriNetUnfolder]: 1177/5341 cut-off events. [2022-07-19 21:28:24,127 INFO L130 PetriNetUnfolder]: For 85815/85889 co-relation queries the response was YES. [2022-07-19 21:28:24,256 INFO L84 FinitePrefix]: Finished finitePrefix Result has 29681 conditions, 5341 events. 1177/5341 cut-off events. For 85815/85889 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 59949 event pairs, 308 based on Foata normal form. 7/4983 useless extension candidates. Maximal degree in co-relation 29424. Up to 1270 conditions per place. [2022-07-19 21:28:24,277 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 322 selfloop transitions, 130 changer transitions 17/650 dead transitions. [2022-07-19 21:28:24,277 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 650 transitions, 10983 flow [2022-07-19 21:28:24,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 21:28:24,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-07-19 21:28:24,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 3399 transitions. [2022-07-19 21:28:24,279 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8508135168961202 [2022-07-19 21:28:24,279 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 3399 transitions. [2022-07-19 21:28:24,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 3399 transitions. [2022-07-19 21:28:24,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:24,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 3399 transitions. [2022-07-19 21:28:24,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 199.94117647058823) internal successors, (3399), 17 states have internal predecessors, (3399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:24,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:24,284 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 235.0) internal successors, (4230), 18 states have internal predecessors, (4230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:24,284 INFO L186 Difference]: Start difference. First operand has 727 places, 597 transitions, 9246 flow. Second operand 17 states and 3399 transitions. [2022-07-19 21:28:24,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 650 transitions, 10983 flow [2022-07-19 21:28:24,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 650 transitions, 10797 flow, removed 93 selfloop flow, removed 2 redundant places. [2022-07-19 21:28:24,914 INFO L242 Difference]: Finished difference. Result has 747 places, 619 transitions, 9954 flow [2022-07-19 21:28:24,914 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9066, PETRI_DIFFERENCE_MINUEND_PLACES=723, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=597, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=482, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9954, PETRI_PLACES=747, PETRI_TRANSITIONS=619} [2022-07-19 21:28:24,914 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 533 predicate places. [2022-07-19 21:28:24,915 INFO L495 AbstractCegarLoop]: Abstraction has has 747 places, 619 transitions, 9954 flow [2022-07-19 21:28:24,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:24,915 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:24,915 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:24,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-07-19 21:28:24,916 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:24,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:24,916 INFO L85 PathProgramCache]: Analyzing trace with hash 422183497, now seen corresponding path program 19 times [2022-07-19 21:28:24,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:24,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784018153] [2022-07-19 21:28:24,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:24,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:24,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:24,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:24,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784018153] [2022-07-19 21:28:24,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784018153] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:24,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:24,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:24,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394585316] [2022-07-19 21:28:24,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:24,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:24,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:24,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:24,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:24,993 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:24,993 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 747 places, 619 transitions, 9954 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:24,994 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:24,994 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:24,994 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:26,925 INFO L129 PetriNetUnfolder]: 1182/5406 cut-off events. [2022-07-19 21:28:26,925 INFO L130 PetriNetUnfolder]: For 90632/90706 co-relation queries the response was YES. [2022-07-19 21:28:27,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30419 conditions, 5406 events. 1182/5406 cut-off events. For 90632/90706 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 60890 event pairs, 311 based on Foata normal form. 7/5044 useless extension candidates. Maximal degree in co-relation 30155. Up to 1277 conditions per place. [2022-07-19 21:28:27,075 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 319 selfloop transitions, 135 changer transitions 21/656 dead transitions. [2022-07-19 21:28:27,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 762 places, 656 transitions, 11358 flow [2022-07-19 21:28:27,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:28:27,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:28:27,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3594 transitions. [2022-07-19 21:28:27,078 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.849645390070922 [2022-07-19 21:28:27,078 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3594 transitions. [2022-07-19 21:28:27,078 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3594 transitions. [2022-07-19 21:28:27,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:27,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3594 transitions. [2022-07-19 21:28:27,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.66666666666666) internal successors, (3594), 18 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,082 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,082 INFO L186 Difference]: Start difference. First operand has 747 places, 619 transitions, 9954 flow. Second operand 18 states and 3594 transitions. [2022-07-19 21:28:27,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 762 places, 656 transitions, 11358 flow [2022-07-19 21:28:27,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 759 places, 656 transitions, 11084 flow, removed 101 selfloop flow, removed 3 redundant places. [2022-07-19 21:28:27,771 INFO L242 Difference]: Finished difference. Result has 763 places, 628 transitions, 10264 flow [2022-07-19 21:28:27,772 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=9714, PETRI_DIFFERENCE_MINUEND_PLACES=742, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=619, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=490, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10264, PETRI_PLACES=763, PETRI_TRANSITIONS=628} [2022-07-19 21:28:27,772 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 549 predicate places. [2022-07-19 21:28:27,772 INFO L495 AbstractCegarLoop]: Abstraction has has 763 places, 628 transitions, 10264 flow [2022-07-19 21:28:27,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,772 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:27,773 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:27,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-07-19 21:28:27,773 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:27,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:27,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1910873827, now seen corresponding path program 20 times [2022-07-19 21:28:27,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:27,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1299952535] [2022-07-19 21:28:27,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:27,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:27,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:27,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:27,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:27,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1299952535] [2022-07-19 21:28:27,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1299952535] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:27,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:27,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:28:27,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333446957] [2022-07-19 21:28:27,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:27,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:28:27,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:27,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:28:27,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:28:27,846 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 235 [2022-07-19 21:28:27,847 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 763 places, 628 transitions, 10264 flow. Second operand has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:27,847 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:27,847 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 235 [2022-07-19 21:28:27,847 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:28:29,953 INFO L129 PetriNetUnfolder]: 1182/5420 cut-off events. [2022-07-19 21:28:29,953 INFO L130 PetriNetUnfolder]: For 95121/95195 co-relation queries the response was YES. [2022-07-19 21:28:30,062 INFO L84 FinitePrefix]: Finished finitePrefix Result has 30319 conditions, 5420 events. 1182/5420 cut-off events. For 95121/95195 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 60616 event pairs, 364 based on Foata normal form. 7/5058 useless extension candidates. Maximal degree in co-relation 30053. Up to 1287 conditions per place. [2022-07-19 21:28:30,074 INFO L132 encePairwiseOnDemand]: 222/235 looper letters, 302 selfloop transitions, 152 changer transitions 27/662 dead transitions. [2022-07-19 21:28:30,075 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 778 places, 662 transitions, 11524 flow [2022-07-19 21:28:30,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 21:28:30,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-07-19 21:28:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3594 transitions. [2022-07-19 21:28:30,077 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.849645390070922 [2022-07-19 21:28:30,077 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3594 transitions. [2022-07-19 21:28:30,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3594 transitions. [2022-07-19 21:28:30,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:28:30,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3594 transitions. [2022-07-19 21:28:30,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 199.66666666666666) internal successors, (3594), 18 states have internal predecessors, (3594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:30,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:30,081 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 235.0) internal successors, (4465), 19 states have internal predecessors, (4465), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:30,081 INFO L186 Difference]: Start difference. First operand has 763 places, 628 transitions, 10264 flow. Second operand 18 states and 3594 transitions. [2022-07-19 21:28:30,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 778 places, 662 transitions, 11524 flow [2022-07-19 21:28:30,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 762 places, 662 transitions, 11329 flow, removed 68 selfloop flow, removed 16 redundant places. [2022-07-19 21:28:30,777 INFO L242 Difference]: Finished difference. Result has 766 places, 634 transitions, 10555 flow [2022-07-19 21:28:30,778 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10071, PETRI_DIFFERENCE_MINUEND_PLACES=745, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=479, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=10555, PETRI_PLACES=766, PETRI_TRANSITIONS=634} [2022-07-19 21:28:30,778 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 552 predicate places. [2022-07-19 21:28:30,778 INFO L495 AbstractCegarLoop]: Abstraction has has 766 places, 634 transitions, 10555 flow [2022-07-19 21:28:30,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 196.6) internal successors, (1966), 10 states have internal predecessors, (1966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:30,778 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:28:30,779 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:28:30,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-07-19 21:28:30,779 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:28:30,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:28:30,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1805731521, now seen corresponding path program 1 times [2022-07-19 21:28:30,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:28:30,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266967024] [2022-07-19 21:28:30,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:28:30,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:28:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:28:31,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:28:31,492 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:28:31,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266967024] [2022-07-19 21:28:31,492 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266967024] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:28:31,492 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:28:31,492 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-07-19 21:28:31,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804152859] [2022-07-19 21:28:31,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:28:31,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-19 21:28:31,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:28:31,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-19 21:28:31,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=867, Unknown=0, NotChecked=0, Total=930 [2022-07-19 21:28:31,495 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 235 [2022-07-19 21:28:31,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 766 places, 634 transitions, 10555 flow. Second operand has 31 states, 31 states have (on average 149.29032258064515) internal successors, (4628), 31 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:28:31,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:28:31,497 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 235 [2022-07-19 21:28:31,497 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:29:06,350 INFO L129 PetriNetUnfolder]: 28253/64096 cut-off events. [2022-07-19 21:29:06,351 INFO L130 PetriNetUnfolder]: For 644196/644274 co-relation queries the response was YES. [2022-07-19 21:29:11,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 244458 conditions, 64096 events. 28253/64096 cut-off events. For 644196/644274 co-relation queries the response was YES. Maximal size of possible extension queue 1238. Compared 705729 event pairs, 10696 based on Foata normal form. 11/62726 useless extension candidates. Maximal degree in co-relation 244203. Up to 24568 conditions per place. [2022-07-19 21:29:11,941 INFO L132 encePairwiseOnDemand]: 196/235 looper letters, 1086 selfloop transitions, 154 changer transitions 190/1566 dead transitions. [2022-07-19 21:29:11,941 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 883 places, 1566 transitions, 16862 flow [2022-07-19 21:29:11,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 120 states. [2022-07-19 21:29:11,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2022-07-19 21:29:11,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 18629 transitions. [2022-07-19 21:29:11,950 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6606028368794327 [2022-07-19 21:29:11,950 INFO L72 ComplementDD]: Start complementDD. Operand 120 states and 18629 transitions. [2022-07-19 21:29:11,950 INFO L73 IsDeterministic]: Start isDeterministic. Operand 120 states and 18629 transitions. [2022-07-19 21:29:11,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:29:11,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 120 states and 18629 transitions. [2022-07-19 21:29:11,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 121 states, 120 states have (on average 155.24166666666667) internal successors, (18629), 120 states have internal predecessors, (18629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:11,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 121 states, 121 states have (on average 235.0) internal successors, (28435), 121 states have internal predecessors, (28435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:11,982 INFO L81 ComplementDD]: Finished complementDD. Result has 121 states, 121 states have (on average 235.0) internal successors, (28435), 121 states have internal predecessors, (28435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:11,982 INFO L186 Difference]: Start difference. First operand has 766 places, 634 transitions, 10555 flow. Second operand 120 states and 18629 transitions. [2022-07-19 21:29:11,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 883 places, 1566 transitions, 16862 flow [2022-07-19 21:29:17,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 868 places, 1566 transitions, 16640 flow, removed 50 selfloop flow, removed 15 redundant places. [2022-07-19 21:29:17,130 INFO L242 Difference]: Finished difference. Result has 975 places, 793 transitions, 11776 flow [2022-07-19 21:29:17,131 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=235, PETRI_DIFFERENCE_MINUEND_FLOW=10335, PETRI_DIFFERENCE_MINUEND_PLACES=749, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=603, PETRI_DIFFERENCE_SUBTRAHEND_STATES=120, PETRI_FLOW=11776, PETRI_PLACES=975, PETRI_TRANSITIONS=793} [2022-07-19 21:29:17,131 INFO L279 CegarLoopForPetriNet]: 214 programPoint places, 761 predicate places. [2022-07-19 21:29:17,131 INFO L495 AbstractCegarLoop]: Abstraction has has 975 places, 793 transitions, 11776 flow [2022-07-19 21:29:17,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 149.29032258064515) internal successors, (4628), 31 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:17,132 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:29:17,132 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:29:17,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-07-19 21:29:17,132 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-07-19 21:29:17,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:29:17,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1533153591, now seen corresponding path program 2 times [2022-07-19 21:29:17,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:29:17,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679445342] [2022-07-19 21:29:17,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:29:17,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:29:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:29:17,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:29:17,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:29:17,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679445342] [2022-07-19 21:29:17,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679445342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:29:17,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:29:17,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-07-19 21:29:17,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958435615] [2022-07-19 21:29:17,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:29:17,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-19 21:29:17,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:29:17,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-19 21:29:17,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=867, Unknown=0, NotChecked=0, Total=930 [2022-07-19 21:29:17,718 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 235 [2022-07-19 21:29:17,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 975 places, 793 transitions, 11776 flow. Second operand has 31 states, 31 states have (on average 149.29032258064515) internal successors, (4628), 31 states have internal predecessors, (4628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:29:17,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:29:17,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 235 [2022-07-19 21:29:17,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand