./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 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/popl20-more-queue-add-3-nl.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 c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:07:09,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:07:09,163 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:07:09,195 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:07:09,196 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:07:09,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:07:09,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:07:09,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:07:09,206 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:07:09,207 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:07:09,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:07:09,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:07:09,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:07:09,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:07:09,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:07:09,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:07:09,223 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:07:09,229 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:07:09,230 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:07:09,232 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:07:09,233 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:07:09,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:07:09,238 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:07:09,239 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:07:09,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:07:09,247 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:07:09,247 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:07:09,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:07:09,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:07:09,249 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:07:09,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:07:09,250 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:07:09,252 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:07:09,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:07:09,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:07:09,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:07:09,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:07:09,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:07:09,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:07:09,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:07:09,260 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:07:09,261 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 03:07:09,294 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:07:09,295 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:07:09,295 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:07:09,295 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:07:09,296 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:07:09,296 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:07:09,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:07:09,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:07:09,298 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:07:09,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:07:09,299 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 03:07:09,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:07:09,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 03:07:09,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:07:09,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:07:09,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:07:09,300 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:07:09,301 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 03:07:09,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:07:09,301 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:07:09,301 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:07:09,301 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:07:09,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:07:09,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:07:09,302 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:07:09,302 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:07:09,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:07:09,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:07:09,303 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:07:09,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:07:09,303 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:07:09,304 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:07:09,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:07:09,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c6847e0a77224cc67de11826c53270ee36a6eb5754e5add0bb0a49165dff2879 [2021-12-28 03:07:09,599 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:07:09,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:07:09,629 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:07:09,630 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:07:09,631 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:07:09,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-12-28 03:07:09,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0dd410a8/4c057420a4fc461b8d73e7b8b9b7fded/FLAGad6f25c5b [2021-12-28 03:07:10,090 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:07:10,090 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-queue-add-3-nl.wvr.c [2021-12-28 03:07:10,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0dd410a8/4c057420a4fc461b8d73e7b8b9b7fded/FLAGad6f25c5b [2021-12-28 03:07:10,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b0dd410a8/4c057420a4fc461b8d73e7b8b9b7fded [2021-12-28 03:07:10,490 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:07:10,492 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:07:10,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:07:10,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:07:10,496 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:07:10,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:07:10" (1/1) ... [2021-12-28 03:07:10,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54d5ff92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:07:10, skipping insertion in model container [2021-12-28 03:07:10,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:07:10" (1/1) ... [2021-12-28 03:07:10,505 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:07:10,533 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:07:10,698 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/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-12-28 03:07:10,705 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:07:10,745 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:07:10,777 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/popl20-more-queue-add-3-nl.wvr.c[3615,3628] [2021-12-28 03:07:10,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:07:10,792 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:07:10,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:07:10 WrapperNode [2021-12-28 03:07:10,793 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:07:10,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:07:10,794 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:07:10,794 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:07:10,800 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:07:10" (1/1) ... [2021-12-28 03:07:10,808 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:07:10" (1/1) ... [2021-12-28 03:07:10,838 INFO L137 Inliner]: procedures = 26, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 257 [2021-12-28 03:07:10,842 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:07:10,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:07:10,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:07:10,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:07:10,851 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:07:10" (1/1) ... [2021-12-28 03:07:10,851 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:07:10" (1/1) ... [2021-12-28 03:07:10,868 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:07:10" (1/1) ... [2021-12-28 03:07:10,872 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:07:10" (1/1) ... [2021-12-28 03:07:10,878 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:07:10" (1/1) ... [2021-12-28 03:07:10,890 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:07:10" (1/1) ... [2021-12-28 03:07:10,893 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:07:10" (1/1) ... [2021-12-28 03:07:10,903 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:07:10,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:07:10,906 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:07:10,907 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:07:10,907 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:07:10" (1/1) ... [2021-12-28 03:07:10,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:07:10,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:07:10,936 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:07:10,963 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:07:10,977 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:07:10,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:07:10,978 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:07:10,978 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:07:10,978 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-28 03:07:10,978 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-28 03:07:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-28 03:07:10,979 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-28 03:07:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-28 03:07:10,979 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-28 03:07:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:07:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-12-28 03:07:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-12-28 03:07:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:07:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:07:10,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:07:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:07:10,981 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-28 03:07:11,138 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:07:11,139 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:07:11,518 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:07:11,629 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:07:11,629 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-28 03:07:11,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:07:11 BoogieIcfgContainer [2021-12-28 03:07:11,631 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:07:11,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:07:11,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:07:11,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:07:11,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:07:10" (1/3) ... [2021-12-28 03:07:11,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f072d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:07:11, skipping insertion in model container [2021-12-28 03:07:11,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:07:10" (2/3) ... [2021-12-28 03:07:11,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f072d76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:07:11, skipping insertion in model container [2021-12-28 03:07:11,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:07:11" (3/3) ... [2021-12-28 03:07:11,637 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-queue-add-3-nl.wvr.c [2021-12-28 03:07:11,641 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-28 03:07:11,642 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:07:11,642 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:07:11,642 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-28 03:07:11,675 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,675 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,676 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,676 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,676 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,676 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,677 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,678 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,678 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,678 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,678 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,679 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,679 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,679 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,679 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,679 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,680 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,680 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,680 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,680 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,680 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,681 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,681 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,681 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,681 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,681 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,682 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,683 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,683 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,683 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,683 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,683 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,684 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,684 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,684 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,684 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,684 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,685 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,686 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,686 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,686 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,687 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,687 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,687 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,687 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,687 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,688 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,688 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,688 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,688 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,688 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,689 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,690 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,690 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,690 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,690 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,691 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,691 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,691 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,691 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,691 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,692 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,692 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,692 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,692 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,693 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,693 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,693 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,693 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,694 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,694 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,694 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,694 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,694 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,697 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,698 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,698 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,698 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,698 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,698 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_~i~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,699 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,699 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,699 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~mem2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,699 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,700 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,700 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,700 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,700 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_~j~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,701 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,701 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,701 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~mem6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,701 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,701 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,702 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~mem10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,702 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,702 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,702 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,703 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,703 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,703 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork2_~k~0#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:07:11,706 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-28 03:07:11,748 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:07:11,754 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:07:11,755 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 03:07:11,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 215 places, 223 transitions, 470 flow [2021-12-28 03:07:11,861 INFO L129 PetriNetUnfolder]: 18/220 cut-off events. [2021-12-28 03:07:11,865 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-28 03:07:11,869 INFO L84 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 220 events. 18/220 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 125 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 180. Up to 3 conditions per place. [2021-12-28 03:07:11,869 INFO L82 GeneralOperation]: Start removeDead. Operand has 215 places, 223 transitions, 470 flow [2021-12-28 03:07:11,879 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 201 places, 209 transitions, 436 flow [2021-12-28 03:07:11,953 INFO L129 PetriNetUnfolder]: 18/208 cut-off events. [2021-12-28 03:07:11,954 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-28 03:07:11,954 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:11,955 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:11,956 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:11,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:11,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1261378579, now seen corresponding path program 1 times [2021-12-28 03:07:11,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:11,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664154717] [2021-12-28 03:07:11,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:11,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:12,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:12,214 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:07:12,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:12,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664154717] [2021-12-28 03:07:12,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664154717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:12,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:12,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 03:07:12,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017374211] [2021-12-28 03:07:12,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:12,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 03:07:12,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:12,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 03:07:12,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 03:07:12,268 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 198 out of 223 [2021-12-28 03:07:12,275 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 209 transitions, 436 flow. Second operand has 2 states, 2 states have (on average 203.5) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:12,275 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:12,275 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 198 of 223 [2021-12-28 03:07:12,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:12,371 INFO L129 PetriNetUnfolder]: 71/400 cut-off events. [2021-12-28 03:07:12,371 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2021-12-28 03:07:12,373 INFO L84 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 400 events. 71/400 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1176 event pairs, 38 based on Foata normal form. 60/419 useless extension candidates. Maximal degree in co-relation 353. Up to 106 conditions per place. [2021-12-28 03:07:12,376 INFO L132 encePairwiseOnDemand]: 210/223 looper letters, 11 selfloop transitions, 0 changer transitions 6/196 dead transitions. [2021-12-28 03:07:12,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 196 transitions, 432 flow [2021-12-28 03:07:12,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 03:07:12,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-28 03:07:12,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 420 transitions. [2021-12-28 03:07:12,388 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9417040358744395 [2021-12-28 03:07:12,389 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 420 transitions. [2021-12-28 03:07:12,389 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 420 transitions. [2021-12-28 03:07:12,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:12,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 420 transitions. [2021-12-28 03:07:12,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 210.0) internal successors, (420), 2 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:12,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:12,401 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 223.0) internal successors, (669), 3 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:12,403 INFO L186 Difference]: Start difference. First operand has 201 places, 209 transitions, 436 flow. Second operand 2 states and 420 transitions. [2021-12-28 03:07:12,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 196 transitions, 432 flow [2021-12-28 03:07:12,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 196 transitions, 420 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-28 03:07:12,411 INFO L242 Difference]: Finished difference. Result has 196 places, 190 transitions, 386 flow [2021-12-28 03:07:12,412 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=386, PETRI_PLACES=196, PETRI_TRANSITIONS=190} [2021-12-28 03:07:12,415 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, -5 predicate places. [2021-12-28 03:07:12,415 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 190 transitions, 386 flow [2021-12-28 03:07:12,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 203.5) internal successors, (407), 2 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:12,416 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:12,416 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:12,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:07:12,417 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:12,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:12,418 INFO L85 PathProgramCache]: Analyzing trace with hash -319257289, now seen corresponding path program 1 times [2021-12-28 03:07:12,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:12,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969535630] [2021-12-28 03:07:12,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:12,419 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:12,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:12,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:07:12,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:12,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969535630] [2021-12-28 03:07:12,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969535630] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:12,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:12,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:07:12,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494539414] [2021-12-28 03:07:12,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:12,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:07:12,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:12,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:07:12,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:07:12,636 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 223 [2021-12-28 03:07:12,637 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 190 transitions, 386 flow. Second operand has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:12,637 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:12,637 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 223 [2021-12-28 03:07:12,637 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:12,881 INFO L129 PetriNetUnfolder]: 73/481 cut-off events. [2021-12-28 03:07:12,881 INFO L130 PetriNetUnfolder]: For 9/9 co-relation queries the response was YES. [2021-12-28 03:07:12,884 INFO L84 FinitePrefix]: Finished finitePrefix Result has 652 conditions, 481 events. 73/481 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1445 event pairs, 38 based on Foata normal form. 11/453 useless extension candidates. Maximal degree in co-relation 649. Up to 118 conditions per place. [2021-12-28 03:07:12,886 INFO L132 encePairwiseOnDemand]: 211/223 looper letters, 33 selfloop transitions, 8 changer transitions 17/211 dead transitions. [2021-12-28 03:07:12,886 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 211 transitions, 547 flow [2021-12-28 03:07:12,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:07:12,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-28 03:07:12,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1609 transitions. [2021-12-28 03:07:12,905 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8016940707523668 [2021-12-28 03:07:12,909 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1609 transitions. [2021-12-28 03:07:12,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1609 transitions. [2021-12-28 03:07:12,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:12,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1609 transitions. [2021-12-28 03:07:12,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 178.77777777777777) internal successors, (1609), 9 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:12,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:12,922 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 223.0) internal successors, (2230), 10 states have internal predecessors, (2230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:12,922 INFO L186 Difference]: Start difference. First operand has 196 places, 190 transitions, 386 flow. Second operand 9 states and 1609 transitions. [2021-12-28 03:07:12,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 211 transitions, 547 flow [2021-12-28 03:07:12,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 211 transitions, 547 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-28 03:07:12,931 INFO L242 Difference]: Finished difference. Result has 200 places, 191 transitions, 418 flow [2021-12-28 03:07:12,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=386, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=418, PETRI_PLACES=200, PETRI_TRANSITIONS=191} [2021-12-28 03:07:12,933 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, -1 predicate places. [2021-12-28 03:07:12,933 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 191 transitions, 418 flow [2021-12-28 03:07:12,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 176.66666666666666) internal successors, (1060), 6 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:12,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:12,934 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:12,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:07:12,935 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:12,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:12,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1559305920, now seen corresponding path program 1 times [2021-12-28 03:07:12,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:12,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538643362] [2021-12-28 03:07:12,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:12,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:13,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:13,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:07:13,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:13,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538643362] [2021-12-28 03:07:13,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538643362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:13,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:13,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-28 03:07:13,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [124086596] [2021-12-28 03:07:13,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:13,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:07:13,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:13,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:07:13,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-28 03:07:13,137 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 223 [2021-12-28 03:07:13,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 191 transitions, 418 flow. Second operand has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:13,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 223 [2021-12-28 03:07:13,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:13,289 INFO L129 PetriNetUnfolder]: 92/516 cut-off events. [2021-12-28 03:07:13,289 INFO L130 PetriNetUnfolder]: For 87/111 co-relation queries the response was YES. [2021-12-28 03:07:13,291 INFO L84 FinitePrefix]: Finished finitePrefix Result has 818 conditions, 516 events. 92/516 cut-off events. For 87/111 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1770 event pairs, 50 based on Foata normal form. 13/481 useless extension candidates. Maximal degree in co-relation 812. Up to 115 conditions per place. [2021-12-28 03:07:13,293 INFO L132 encePairwiseOnDemand]: 214/223 looper letters, 36 selfloop transitions, 6 changer transitions 8/203 dead transitions. [2021-12-28 03:07:13,293 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 203 transitions, 552 flow [2021-12-28 03:07:13,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:07:13,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-28 03:07:13,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1255 transitions. [2021-12-28 03:07:13,296 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8039718129404229 [2021-12-28 03:07:13,297 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1255 transitions. [2021-12-28 03:07:13,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1255 transitions. [2021-12-28 03:07:13,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:13,298 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1255 transitions. [2021-12-28 03:07:13,313 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.28571428571428) internal successors, (1255), 7 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,317 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 223.0) internal successors, (1784), 8 states have internal predecessors, (1784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,317 INFO L186 Difference]: Start difference. First operand has 200 places, 191 transitions, 418 flow. Second operand 7 states and 1255 transitions. [2021-12-28 03:07:13,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 203 transitions, 552 flow [2021-12-28 03:07:13,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 203 transitions, 538 flow, removed 0 selfloop flow, removed 5 redundant places. [2021-12-28 03:07:13,325 INFO L242 Difference]: Finished difference. Result has 201 places, 192 transitions, 428 flow [2021-12-28 03:07:13,325 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=185, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=428, PETRI_PLACES=201, PETRI_TRANSITIONS=192} [2021-12-28 03:07:13,327 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 0 predicate places. [2021-12-28 03:07:13,328 INFO L470 AbstractCegarLoop]: Abstraction has has 201 places, 192 transitions, 428 flow [2021-12-28 03:07:13,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 177.33333333333334) internal successors, (1064), 6 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,329 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:13,329 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:13,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 03:07:13,329 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:13,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:13,330 INFO L85 PathProgramCache]: Analyzing trace with hash -420338195, now seen corresponding path program 1 times [2021-12-28 03:07:13,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:13,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485427076] [2021-12-28 03:07:13,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:13,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:13,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:13,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485427076] [2021-12-28 03:07:13,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485427076] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:13,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:13,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:07:13,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102606045] [2021-12-28 03:07:13,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:13,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:07:13,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:13,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:07:13,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:07:13,467 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 194 out of 223 [2021-12-28 03:07:13,468 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 192 transitions, 428 flow. Second operand has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,468 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:13,468 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 194 of 223 [2021-12-28 03:07:13,468 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:13,542 INFO L129 PetriNetUnfolder]: 79/421 cut-off events. [2021-12-28 03:07:13,545 INFO L130 PetriNetUnfolder]: For 84/94 co-relation queries the response was YES. [2021-12-28 03:07:13,547 INFO L84 FinitePrefix]: Finished finitePrefix Result has 662 conditions, 421 events. 79/421 cut-off events. For 84/94 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1216 event pairs, 23 based on Foata normal form. 6/405 useless extension candidates. Maximal degree in co-relation 654. Up to 79 conditions per place. [2021-12-28 03:07:13,548 INFO L132 encePairwiseOnDemand]: 220/223 looper letters, 19 selfloop transitions, 2 changer transitions 0/198 dead transitions. [2021-12-28 03:07:13,549 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 198 transitions, 492 flow [2021-12-28 03:07:13,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:07:13,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-28 03:07:13,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 604 transitions. [2021-12-28 03:07:13,551 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9028400597907325 [2021-12-28 03:07:13,551 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 604 transitions. [2021-12-28 03:07:13,551 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 604 transitions. [2021-12-28 03:07:13,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:13,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 604 transitions. [2021-12-28 03:07:13,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 201.33333333333334) internal successors, (604), 3 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,555 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,555 INFO L186 Difference]: Start difference. First operand has 201 places, 192 transitions, 428 flow. Second operand 3 states and 604 transitions. [2021-12-28 03:07:13,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 198 transitions, 492 flow [2021-12-28 03:07:13,557 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 198 transitions, 482 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-12-28 03:07:13,559 INFO L242 Difference]: Finished difference. Result has 199 places, 193 transitions, 432 flow [2021-12-28 03:07:13,560 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=432, PETRI_PLACES=199, PETRI_TRANSITIONS=193} [2021-12-28 03:07:13,561 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, -2 predicate places. [2021-12-28 03:07:13,561 INFO L470 AbstractCegarLoop]: Abstraction has has 199 places, 193 transitions, 432 flow [2021-12-28 03:07:13,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,562 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:13,562 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:13,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 03:07:13,562 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:13,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:13,563 INFO L85 PathProgramCache]: Analyzing trace with hash -46819677, now seen corresponding path program 2 times [2021-12-28 03:07:13,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:13,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363900390] [2021-12-28 03:07:13,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:13,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:13,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:13,765 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:13,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:13,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363900390] [2021-12-28 03:07:13,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363900390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:13,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:13,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 03:07:13,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057787166] [2021-12-28 03:07:13,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:13,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 03:07:13,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:13,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 03:07:13,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 03:07:13,769 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 191 out of 223 [2021-12-28 03:07:13,769 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 193 transitions, 432 flow. Second operand has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,770 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:13,770 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 191 of 223 [2021-12-28 03:07:13,770 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:13,844 INFO L129 PetriNetUnfolder]: 58/373 cut-off events. [2021-12-28 03:07:13,844 INFO L130 PetriNetUnfolder]: For 90/104 co-relation queries the response was YES. [2021-12-28 03:07:13,845 INFO L84 FinitePrefix]: Finished finitePrefix Result has 602 conditions, 373 events. 58/373 cut-off events. For 90/104 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 885 event pairs, 9 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 593. Up to 91 conditions per place. [2021-12-28 03:07:13,847 INFO L132 encePairwiseOnDemand]: 217/223 looper letters, 18 selfloop transitions, 5 changer transitions 0/197 dead transitions. [2021-12-28 03:07:13,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 197 transitions, 492 flow [2021-12-28 03:07:13,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 03:07:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-12-28 03:07:13,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 596 transitions. [2021-12-28 03:07:13,849 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.890881913303438 [2021-12-28 03:07:13,849 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 596 transitions. [2021-12-28 03:07:13,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 596 transitions. [2021-12-28 03:07:13,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:13,850 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 596 transitions. [2021-12-28 03:07:13,852 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 198.66666666666666) internal successors, (596), 3 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,853 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 223.0) internal successors, (892), 4 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,854 INFO L186 Difference]: Start difference. First operand has 199 places, 193 transitions, 432 flow. Second operand 3 states and 596 transitions. [2021-12-28 03:07:13,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 197 transitions, 492 flow [2021-12-28 03:07:13,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 197 transitions, 484 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-12-28 03:07:13,859 INFO L242 Difference]: Finished difference. Result has 200 places, 195 transitions, 453 flow [2021-12-28 03:07:13,859 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=453, PETRI_PLACES=200, PETRI_TRANSITIONS=195} [2021-12-28 03:07:13,861 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, -1 predicate places. [2021-12-28 03:07:13,861 INFO L470 AbstractCegarLoop]: Abstraction has has 200 places, 195 transitions, 453 flow [2021-12-28 03:07:13,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 196.66666666666666) internal successors, (590), 3 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,862 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:13,862 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:13,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-28 03:07:13,863 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:13,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:13,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1995193659, now seen corresponding path program 3 times [2021-12-28 03:07:13,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:13,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149999318] [2021-12-28 03:07:13,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:13,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:13,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:14,750 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:14,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:14,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149999318] [2021-12-28 03:07:14,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149999318] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:14,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:14,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:14,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434094808] [2021-12-28 03:07:14,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:14,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:14,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:14,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:14,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=235, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:14,754 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:14,757 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 195 transitions, 453 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:14,757 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:14,757 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:14,757 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:15,660 INFO L129 PetriNetUnfolder]: 840/1884 cut-off events. [2021-12-28 03:07:15,661 INFO L130 PetriNetUnfolder]: For 805/827 co-relation queries the response was YES. [2021-12-28 03:07:15,666 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3983 conditions, 1884 events. 840/1884 cut-off events. For 805/827 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 11468 event pairs, 431 based on Foata normal form. 1/1729 useless extension candidates. Maximal degree in co-relation 3974. Up to 983 conditions per place. [2021-12-28 03:07:15,676 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 114 selfloop transitions, 41 changer transitions 5/295 dead transitions. [2021-12-28 03:07:15,676 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 295 transitions, 1082 flow [2021-12-28 03:07:15,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 03:07:15,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-28 03:07:15,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2934 transitions. [2021-12-28 03:07:15,683 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6924710880339863 [2021-12-28 03:07:15,683 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2934 transitions. [2021-12-28 03:07:15,683 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2934 transitions. [2021-12-28 03:07:15,684 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:15,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2934 transitions. [2021-12-28 03:07:15,690 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.42105263157896) internal successors, (2934), 19 states have internal predecessors, (2934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:15,720 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:15,722 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:15,722 INFO L186 Difference]: Start difference. First operand has 200 places, 195 transitions, 453 flow. Second operand 19 states and 2934 transitions. [2021-12-28 03:07:15,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 295 transitions, 1082 flow [2021-12-28 03:07:15,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 295 transitions, 1047 flow, removed 13 selfloop flow, removed 1 redundant places. [2021-12-28 03:07:15,729 INFO L242 Difference]: Finished difference. Result has 226 places, 233 transitions, 670 flow [2021-12-28 03:07:15,730 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=670, PETRI_PLACES=226, PETRI_TRANSITIONS=233} [2021-12-28 03:07:15,730 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 25 predicate places. [2021-12-28 03:07:15,731 INFO L470 AbstractCegarLoop]: Abstraction has has 226 places, 233 transitions, 670 flow [2021-12-28 03:07:15,732 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:15,732 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:15,732 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:15,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 03:07:15,733 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:15,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:15,733 INFO L85 PathProgramCache]: Analyzing trace with hash 717178791, now seen corresponding path program 4 times [2021-12-28 03:07:15,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:15,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105515488] [2021-12-28 03:07:15,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:15,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:15,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:16,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:16,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:16,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105515488] [2021-12-28 03:07:16,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105515488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:16,571 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:16,571 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:16,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424885888] [2021-12-28 03:07:16,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:16,572 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:16,572 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:16,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:16,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:16,577 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:16,580 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 233 transitions, 670 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:16,580 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:16,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:16,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:17,712 INFO L129 PetriNetUnfolder]: 993/2376 cut-off events. [2021-12-28 03:07:17,713 INFO L130 PetriNetUnfolder]: For 1339/1361 co-relation queries the response was YES. [2021-12-28 03:07:17,722 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5555 conditions, 2376 events. 993/2376 cut-off events. For 1339/1361 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16615 event pairs, 233 based on Foata normal form. 14/2302 useless extension candidates. Maximal degree in co-relation 5537. Up to 1050 conditions per place. [2021-12-28 03:07:17,735 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 135 selfloop transitions, 56 changer transitions 5/331 dead transitions. [2021-12-28 03:07:17,735 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 331 transitions, 1466 flow [2021-12-28 03:07:17,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 03:07:17,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-28 03:07:17,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3091 transitions. [2021-12-28 03:07:17,743 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6930493273542601 [2021-12-28 03:07:17,743 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3091 transitions. [2021-12-28 03:07:17,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3091 transitions. [2021-12-28 03:07:17,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:17,745 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3091 transitions. [2021-12-28 03:07:17,750 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.55) internal successors, (3091), 20 states have internal predecessors, (3091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:17,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:17,758 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:17,758 INFO L186 Difference]: Start difference. First operand has 226 places, 233 transitions, 670 flow. Second operand 20 states and 3091 transitions. [2021-12-28 03:07:17,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 331 transitions, 1466 flow [2021-12-28 03:07:17,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 331 transitions, 1446 flow, removed 6 selfloop flow, removed 6 redundant places. [2021-12-28 03:07:17,772 INFO L242 Difference]: Finished difference. Result has 248 places, 257 transitions, 973 flow [2021-12-28 03:07:17,773 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=973, PETRI_PLACES=248, PETRI_TRANSITIONS=257} [2021-12-28 03:07:17,773 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 47 predicate places. [2021-12-28 03:07:17,774 INFO L470 AbstractCegarLoop]: Abstraction has has 248 places, 257 transitions, 973 flow [2021-12-28 03:07:17,775 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:17,775 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:17,775 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:17,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 03:07:17,776 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:17,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:17,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2083915083, now seen corresponding path program 5 times [2021-12-28 03:07:17,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:17,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846937439] [2021-12-28 03:07:17,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:17,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:17,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:18,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:18,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:18,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846937439] [2021-12-28 03:07:18,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846937439] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:18,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:18,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:18,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051004988] [2021-12-28 03:07:18,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:18,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:18,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:18,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:18,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:18,477 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:18,480 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 257 transitions, 973 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:18,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:18,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:18,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:19,345 INFO L129 PetriNetUnfolder]: 1064/2559 cut-off events. [2021-12-28 03:07:19,345 INFO L130 PetriNetUnfolder]: For 3196/3216 co-relation queries the response was YES. [2021-12-28 03:07:19,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6898 conditions, 2559 events. 1064/2559 cut-off events. For 3196/3216 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 18372 event pairs, 377 based on Foata normal form. 9/2456 useless extension candidates. Maximal degree in co-relation 6871. Up to 1376 conditions per place. [2021-12-28 03:07:19,371 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 132 selfloop transitions, 55 changer transitions 5/327 dead transitions. [2021-12-28 03:07:19,371 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 327 transitions, 1718 flow [2021-12-28 03:07:19,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:07:19,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-28 03:07:19,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2780 transitions. [2021-12-28 03:07:19,377 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6925759840558047 [2021-12-28 03:07:19,377 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2780 transitions. [2021-12-28 03:07:19,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2780 transitions. [2021-12-28 03:07:19,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:19,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2780 transitions. [2021-12-28 03:07:19,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.44444444444446) internal successors, (2780), 18 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:19,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:19,391 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:19,391 INFO L186 Difference]: Start difference. First operand has 248 places, 257 transitions, 973 flow. Second operand 18 states and 2780 transitions. [2021-12-28 03:07:19,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 327 transitions, 1718 flow [2021-12-28 03:07:19,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 327 transitions, 1639 flow, removed 23 selfloop flow, removed 8 redundant places. [2021-12-28 03:07:19,412 INFO L242 Difference]: Finished difference. Result has 263 places, 274 transitions, 1215 flow [2021-12-28 03:07:19,412 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=905, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1215, PETRI_PLACES=263, PETRI_TRANSITIONS=274} [2021-12-28 03:07:19,413 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 62 predicate places. [2021-12-28 03:07:19,413 INFO L470 AbstractCegarLoop]: Abstraction has has 263 places, 274 transitions, 1215 flow [2021-12-28 03:07:19,414 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:19,414 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:19,415 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:19,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-28 03:07:19,415 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:19,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:19,416 INFO L85 PathProgramCache]: Analyzing trace with hash 2087498249, now seen corresponding path program 6 times [2021-12-28 03:07:19,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:19,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244242545] [2021-12-28 03:07:19,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:19,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:20,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:20,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244242545] [2021-12-28 03:07:20,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244242545] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:20,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:20,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:20,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401576185] [2021-12-28 03:07:20,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:20,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:20,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:20,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:20,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:20,217 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:20,220 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 274 transitions, 1215 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:20,220 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:20,220 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:20,221 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:21,283 INFO L129 PetriNetUnfolder]: 1112/2639 cut-off events. [2021-12-28 03:07:21,284 INFO L130 PetriNetUnfolder]: For 4968/4983 co-relation queries the response was YES. [2021-12-28 03:07:21,300 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7810 conditions, 2639 events. 1112/2639 cut-off events. For 4968/4983 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 18906 event pairs, 475 based on Foata normal form. 7/2549 useless extension candidates. Maximal degree in co-relation 7776. Up to 1392 conditions per place. [2021-12-28 03:07:21,315 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 154 selfloop transitions, 58 changer transitions 5/352 dead transitions. [2021-12-28 03:07:21,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 280 places, 352 transitions, 2093 flow [2021-12-28 03:07:21,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 03:07:21,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-28 03:07:21,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3086 transitions. [2021-12-28 03:07:21,323 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6919282511210763 [2021-12-28 03:07:21,323 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3086 transitions. [2021-12-28 03:07:21,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3086 transitions. [2021-12-28 03:07:21,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:21,325 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3086 transitions. [2021-12-28 03:07:21,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.3) internal successors, (3086), 20 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:21,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:21,340 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:21,340 INFO L186 Difference]: Start difference. First operand has 263 places, 274 transitions, 1215 flow. Second operand 20 states and 3086 transitions. [2021-12-28 03:07:21,340 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 280 places, 352 transitions, 2093 flow [2021-12-28 03:07:21,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 272 places, 352 transitions, 2000 flow, removed 30 selfloop flow, removed 8 redundant places. [2021-12-28 03:07:21,366 INFO L242 Difference]: Finished difference. Result has 279 places, 285 transitions, 1393 flow [2021-12-28 03:07:21,367 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1132, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1393, PETRI_PLACES=279, PETRI_TRANSITIONS=285} [2021-12-28 03:07:21,367 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 78 predicate places. [2021-12-28 03:07:21,368 INFO L470 AbstractCegarLoop]: Abstraction has has 279 places, 285 transitions, 1393 flow [2021-12-28 03:07:21,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:21,369 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:21,369 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:21,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-28 03:07:21,369 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:21,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:21,370 INFO L85 PathProgramCache]: Analyzing trace with hash -902654655, now seen corresponding path program 7 times [2021-12-28 03:07:21,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:21,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101318492] [2021-12-28 03:07:21,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:21,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:22,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:22,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:22,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101318492] [2021-12-28 03:07:22,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101318492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:22,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:22,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:22,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503186366] [2021-12-28 03:07:22,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:22,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:22,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:22,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:22,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:22,063 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:22,065 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 285 transitions, 1393 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:22,065 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:22,065 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:22,065 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:23,085 INFO L129 PetriNetUnfolder]: 1162/2825 cut-off events. [2021-12-28 03:07:23,085 INFO L130 PetriNetUnfolder]: For 7520/7534 co-relation queries the response was YES. [2021-12-28 03:07:23,103 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8738 conditions, 2825 events. 1162/2825 cut-off events. For 7520/7534 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 21081 event pairs, 366 based on Foata normal form. 5/2710 useless extension candidates. Maximal degree in co-relation 8698. Up to 1457 conditions per place. [2021-12-28 03:07:23,118 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 160 selfloop transitions, 60 changer transitions 5/360 dead transitions. [2021-12-28 03:07:23,119 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 360 transitions, 2312 flow [2021-12-28 03:07:23,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 03:07:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-28 03:07:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3086 transitions. [2021-12-28 03:07:23,125 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6919282511210763 [2021-12-28 03:07:23,125 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3086 transitions. [2021-12-28 03:07:23,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3086 transitions. [2021-12-28 03:07:23,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:23,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3086 transitions. [2021-12-28 03:07:23,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.3) internal successors, (3086), 20 states have internal predecessors, (3086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:23,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:23,139 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:23,139 INFO L186 Difference]: Start difference. First operand has 279 places, 285 transitions, 1393 flow. Second operand 20 states and 3086 transitions. [2021-12-28 03:07:23,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 360 transitions, 2312 flow [2021-12-28 03:07:23,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 360 transitions, 2160 flow, removed 34 selfloop flow, removed 13 redundant places. [2021-12-28 03:07:23,168 INFO L242 Difference]: Finished difference. Result has 289 places, 293 transitions, 1478 flow [2021-12-28 03:07:23,169 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1478, PETRI_PLACES=289, PETRI_TRANSITIONS=293} [2021-12-28 03:07:23,169 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 88 predicate places. [2021-12-28 03:07:23,170 INFO L470 AbstractCegarLoop]: Abstraction has has 289 places, 293 transitions, 1478 flow [2021-12-28 03:07:23,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:23,171 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:23,171 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:23,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-28 03:07:23,171 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:23,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:23,172 INFO L85 PathProgramCache]: Analyzing trace with hash -1383550215, now seen corresponding path program 8 times [2021-12-28 03:07:23,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:23,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671995733] [2021-12-28 03:07:23,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:23,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:23,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:23,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:23,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:23,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671995733] [2021-12-28 03:07:23,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671995733] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:23,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:23,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:23,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073047902] [2021-12-28 03:07:23,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:23,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:23,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:23,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:23,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:23,861 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:23,863 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 293 transitions, 1478 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:23,863 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:23,863 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:23,863 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:24,961 INFO L129 PetriNetUnfolder]: 1212/2986 cut-off events. [2021-12-28 03:07:24,961 INFO L130 PetriNetUnfolder]: For 9360/9382 co-relation queries the response was YES. [2021-12-28 03:07:24,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9528 conditions, 2986 events. 1212/2986 cut-off events. For 9360/9382 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 22856 event pairs, 325 based on Foata normal form. 14/2881 useless extension candidates. Maximal degree in co-relation 9483. Up to 1555 conditions per place. [2021-12-28 03:07:24,996 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 164 selfloop transitions, 61 changer transitions 5/365 dead transitions. [2021-12-28 03:07:24,996 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 365 transitions, 2439 flow [2021-12-28 03:07:24,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 03:07:24,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-28 03:07:24,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3084 transitions. [2021-12-28 03:07:25,001 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6914798206278027 [2021-12-28 03:07:25,001 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3084 transitions. [2021-12-28 03:07:25,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3084 transitions. [2021-12-28 03:07:25,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:25,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3084 transitions. [2021-12-28 03:07:25,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.2) internal successors, (3084), 20 states have internal predecessors, (3084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:25,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:25,014 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:25,014 INFO L186 Difference]: Start difference. First operand has 289 places, 293 transitions, 1478 flow. Second operand 20 states and 3084 transitions. [2021-12-28 03:07:25,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 365 transitions, 2439 flow [2021-12-28 03:07:25,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 365 transitions, 2279 flow, removed 36 selfloop flow, removed 14 redundant places. [2021-12-28 03:07:25,043 INFO L242 Difference]: Finished difference. Result has 297 places, 302 transitions, 1601 flow [2021-12-28 03:07:25,044 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1601, PETRI_PLACES=297, PETRI_TRANSITIONS=302} [2021-12-28 03:07:25,044 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 96 predicate places. [2021-12-28 03:07:25,044 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 302 transitions, 1601 flow [2021-12-28 03:07:25,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:25,045 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:25,046 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:25,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-28 03:07:25,046 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:25,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:25,046 INFO L85 PathProgramCache]: Analyzing trace with hash -576522603, now seen corresponding path program 9 times [2021-12-28 03:07:25,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:25,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789879046] [2021-12-28 03:07:25,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:25,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:25,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:25,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789879046] [2021-12-28 03:07:25,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789879046] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:25,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:25,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:25,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580723113] [2021-12-28 03:07:25,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:25,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:25,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:25,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:25,658 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:25,661 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 302 transitions, 1601 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:25,661 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:25,661 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:25,661 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:26,760 INFO L129 PetriNetUnfolder]: 1227/2943 cut-off events. [2021-12-28 03:07:26,760 INFO L130 PetriNetUnfolder]: For 10632/10648 co-relation queries the response was YES. [2021-12-28 03:07:26,777 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9858 conditions, 2943 events. 1227/2943 cut-off events. For 10632/10648 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 22044 event pairs, 520 based on Foata normal form. 8/2838 useless extension candidates. Maximal degree in co-relation 9809. Up to 1641 conditions per place. [2021-12-28 03:07:26,799 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 167 selfloop transitions, 59 changer transitions 5/366 dead transitions. [2021-12-28 03:07:26,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 366 transitions, 2515 flow [2021-12-28 03:07:26,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 03:07:26,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-28 03:07:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2926 transitions. [2021-12-28 03:07:26,806 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6905829596412556 [2021-12-28 03:07:26,806 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2926 transitions. [2021-12-28 03:07:26,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2926 transitions. [2021-12-28 03:07:26,809 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:26,809 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2926 transitions. [2021-12-28 03:07:26,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.0) internal successors, (2926), 19 states have internal predecessors, (2926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:26,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:26,822 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:26,822 INFO L186 Difference]: Start difference. First operand has 297 places, 302 transitions, 1601 flow. Second operand 19 states and 2926 transitions. [2021-12-28 03:07:26,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 366 transitions, 2515 flow [2021-12-28 03:07:26,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 366 transitions, 2345 flow, removed 40 selfloop flow, removed 15 redundant places. [2021-12-28 03:07:26,863 INFO L242 Difference]: Finished difference. Result has 302 places, 309 transitions, 1634 flow [2021-12-28 03:07:26,864 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1634, PETRI_PLACES=302, PETRI_TRANSITIONS=309} [2021-12-28 03:07:26,865 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 101 predicate places. [2021-12-28 03:07:26,865 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 309 transitions, 1634 flow [2021-12-28 03:07:26,866 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:26,866 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:26,866 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:26,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-28 03:07:26,866 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:26,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:26,867 INFO L85 PathProgramCache]: Analyzing trace with hash -606615727, now seen corresponding path program 10 times [2021-12-28 03:07:26,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:26,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029853853] [2021-12-28 03:07:26,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:26,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:26,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:27,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:27,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:27,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029853853] [2021-12-28 03:07:27,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029853853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:27,597 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:27,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:27,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847455330] [2021-12-28 03:07:27,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:27,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:27,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:27,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:27,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:27,600 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:27,602 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 309 transitions, 1634 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:27,602 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:27,602 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:27,602 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:28,882 INFO L129 PetriNetUnfolder]: 1376/3356 cut-off events. [2021-12-28 03:07:28,882 INFO L130 PetriNetUnfolder]: For 12903/12911 co-relation queries the response was YES. [2021-12-28 03:07:28,897 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11340 conditions, 3356 events. 1376/3356 cut-off events. For 12903/12911 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 26522 event pairs, 556 based on Foata normal form. 5/3218 useless extension candidates. Maximal degree in co-relation 11288. Up to 1798 conditions per place. [2021-12-28 03:07:28,912 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 197 selfloop transitions, 56 changer transitions 5/393 dead transitions. [2021-12-28 03:07:28,913 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 393 transitions, 2797 flow [2021-12-28 03:07:28,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 03:07:28,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-28 03:07:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3090 transitions. [2021-12-28 03:07:28,917 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6928251121076233 [2021-12-28 03:07:28,917 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3090 transitions. [2021-12-28 03:07:28,917 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3090 transitions. [2021-12-28 03:07:28,918 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:28,918 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3090 transitions. [2021-12-28 03:07:28,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.5) internal successors, (3090), 20 states have internal predecessors, (3090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:28,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:28,930 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:28,930 INFO L186 Difference]: Start difference. First operand has 302 places, 309 transitions, 1634 flow. Second operand 20 states and 3090 transitions. [2021-12-28 03:07:28,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 393 transitions, 2797 flow [2021-12-28 03:07:28,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 393 transitions, 2697 flow, removed 13 selfloop flow, removed 12 redundant places. [2021-12-28 03:07:28,969 INFO L242 Difference]: Finished difference. Result has 315 places, 323 transitions, 1879 flow [2021-12-28 03:07:28,969 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1879, PETRI_PLACES=315, PETRI_TRANSITIONS=323} [2021-12-28 03:07:28,970 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 114 predicate places. [2021-12-28 03:07:28,970 INFO L470 AbstractCegarLoop]: Abstraction has has 315 places, 323 transitions, 1879 flow [2021-12-28 03:07:28,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:28,971 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:28,971 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:28,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-28 03:07:28,972 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:28,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:28,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1360272567, now seen corresponding path program 11 times [2021-12-28 03:07:28,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:28,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044535775] [2021-12-28 03:07:28,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:28,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:29,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:29,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:29,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044535775] [2021-12-28 03:07:29,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044535775] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:29,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:29,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:29,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097849541] [2021-12-28 03:07:29,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:29,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:29,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:29,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:29,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:29,514 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:29,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 323 transitions, 1879 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:29,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:29,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:29,516 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:30,507 INFO L129 PetriNetUnfolder]: 1386/3321 cut-off events. [2021-12-28 03:07:30,507 INFO L130 PetriNetUnfolder]: For 16058/16066 co-relation queries the response was YES. [2021-12-28 03:07:30,530 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12084 conditions, 3321 events. 1386/3321 cut-off events. For 16058/16066 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 25869 event pairs, 775 based on Foata normal form. 1/3186 useless extension candidates. Maximal degree in co-relation 12025. Up to 1977 conditions per place. [2021-12-28 03:07:30,545 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 183 selfloop transitions, 51 changer transitions 5/374 dead transitions. [2021-12-28 03:07:30,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 374 transitions, 2798 flow [2021-12-28 03:07:30,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:07:30,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-28 03:07:30,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2765 transitions. [2021-12-28 03:07:30,549 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6888390632785252 [2021-12-28 03:07:30,550 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2765 transitions. [2021-12-28 03:07:30,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2765 transitions. [2021-12-28 03:07:30,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:30,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2765 transitions. [2021-12-28 03:07:30,619 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.61111111111111) internal successors, (2765), 18 states have internal predecessors, (2765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:30,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:30,624 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:30,624 INFO L186 Difference]: Start difference. First operand has 315 places, 323 transitions, 1879 flow. Second operand 18 states and 2765 transitions. [2021-12-28 03:07:30,624 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 374 transitions, 2798 flow [2021-12-28 03:07:30,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 374 transitions, 2602 flow, removed 69 selfloop flow, removed 11 redundant places. [2021-12-28 03:07:30,684 INFO L242 Difference]: Finished difference. Result has 323 places, 331 transitions, 1918 flow [2021-12-28 03:07:30,685 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1689, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1918, PETRI_PLACES=323, PETRI_TRANSITIONS=331} [2021-12-28 03:07:30,686 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 122 predicate places. [2021-12-28 03:07:30,686 INFO L470 AbstractCegarLoop]: Abstraction has has 323 places, 331 transitions, 1918 flow [2021-12-28 03:07:30,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:30,687 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:30,687 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:30,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-28 03:07:30,687 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:30,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:30,688 INFO L85 PathProgramCache]: Analyzing trace with hash 776179595, now seen corresponding path program 12 times [2021-12-28 03:07:30,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:30,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834039500] [2021-12-28 03:07:30,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:30,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:30,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:31,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:31,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834039500] [2021-12-28 03:07:31,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834039500] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:31,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:31,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:31,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700256622] [2021-12-28 03:07:31,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:31,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:31,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:31,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:31,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:31,344 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:31,346 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 331 transitions, 1918 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:31,346 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:31,346 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:31,346 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:32,628 INFO L129 PetriNetUnfolder]: 1458/3514 cut-off events. [2021-12-28 03:07:32,628 INFO L130 PetriNetUnfolder]: For 18674/18678 co-relation queries the response was YES. [2021-12-28 03:07:32,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12899 conditions, 3514 events. 1458/3514 cut-off events. For 18674/18678 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 27992 event pairs, 744 based on Foata normal form. 2/3384 useless extension candidates. Maximal degree in co-relation 12837. Up to 2009 conditions per place. [2021-12-28 03:07:32,723 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 206 selfloop transitions, 61 changer transitions 5/407 dead transitions. [2021-12-28 03:07:32,723 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 407 transitions, 3113 flow [2021-12-28 03:07:32,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 03:07:32,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-28 03:07:32,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3085 transitions. [2021-12-28 03:07:32,731 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6917040358744395 [2021-12-28 03:07:32,731 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3085 transitions. [2021-12-28 03:07:32,731 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3085 transitions. [2021-12-28 03:07:32,732 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:32,732 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3085 transitions. [2021-12-28 03:07:32,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.25) internal successors, (3085), 20 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:32,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:32,741 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:32,741 INFO L186 Difference]: Start difference. First operand has 323 places, 331 transitions, 1918 flow. Second operand 20 states and 3085 transitions. [2021-12-28 03:07:32,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 407 transitions, 3113 flow [2021-12-28 03:07:32,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 407 transitions, 2975 flow, removed 37 selfloop flow, removed 11 redundant places. [2021-12-28 03:07:32,795 INFO L242 Difference]: Finished difference. Result has 337 places, 343 transitions, 2112 flow [2021-12-28 03:07:32,796 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1783, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2112, PETRI_PLACES=337, PETRI_TRANSITIONS=343} [2021-12-28 03:07:32,796 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 136 predicate places. [2021-12-28 03:07:32,796 INFO L470 AbstractCegarLoop]: Abstraction has has 337 places, 343 transitions, 2112 flow [2021-12-28 03:07:32,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:32,797 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:32,797 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:32,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-28 03:07:32,798 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:32,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:32,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1152778333, now seen corresponding path program 13 times [2021-12-28 03:07:32,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:32,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879380061] [2021-12-28 03:07:32,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:32,799 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:33,453 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:33,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:33,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879380061] [2021-12-28 03:07:33,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879380061] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:33,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:33,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:33,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454502020] [2021-12-28 03:07:33,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:33,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:33,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:33,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:33,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:33,457 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:33,459 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 343 transitions, 2112 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:33,460 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:33,460 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:33,460 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:34,679 INFO L129 PetriNetUnfolder]: 1514/3776 cut-off events. [2021-12-28 03:07:34,680 INFO L130 PetriNetUnfolder]: For 23757/23779 co-relation queries the response was YES. [2021-12-28 03:07:34,705 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14210 conditions, 3776 events. 1514/3776 cut-off events. For 23757/23779 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 31417 event pairs, 582 based on Foata normal form. 14/3632 useless extension candidates. Maximal degree in co-relation 14141. Up to 2109 conditions per place. [2021-12-28 03:07:34,721 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 211 selfloop transitions, 65 changer transitions 5/416 dead transitions. [2021-12-28 03:07:34,721 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 416 transitions, 3367 flow [2021-12-28 03:07:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 03:07:34,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-28 03:07:34,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3085 transitions. [2021-12-28 03:07:34,727 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6917040358744395 [2021-12-28 03:07:34,727 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3085 transitions. [2021-12-28 03:07:34,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3085 transitions. [2021-12-28 03:07:34,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:34,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3085 transitions. [2021-12-28 03:07:34,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.25) internal successors, (3085), 20 states have internal predecessors, (3085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:34,736 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:34,737 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:34,738 INFO L186 Difference]: Start difference. First operand has 337 places, 343 transitions, 2112 flow. Second operand 20 states and 3085 transitions. [2021-12-28 03:07:34,738 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 416 transitions, 3367 flow [2021-12-28 03:07:34,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 416 transitions, 3143 flow, removed 68 selfloop flow, removed 13 redundant places. [2021-12-28 03:07:34,890 INFO L242 Difference]: Finished difference. Result has 346 places, 355 transitions, 2265 flow [2021-12-28 03:07:34,891 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2265, PETRI_PLACES=346, PETRI_TRANSITIONS=355} [2021-12-28 03:07:34,892 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 145 predicate places. [2021-12-28 03:07:34,892 INFO L470 AbstractCegarLoop]: Abstraction has has 346 places, 355 transitions, 2265 flow [2021-12-28 03:07:34,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:34,893 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:34,893 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:34,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-28 03:07:34,894 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:34,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:34,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1468115147, now seen corresponding path program 14 times [2021-12-28 03:07:34,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:34,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157199639] [2021-12-28 03:07:34,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:34,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:35,546 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:35,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:35,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157199639] [2021-12-28 03:07:35,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157199639] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:35,547 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:35,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:35,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480145662] [2021-12-28 03:07:35,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:35,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:35,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:35,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:35,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:35,550 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:35,551 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 355 transitions, 2265 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:35,551 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:35,551 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:35,551 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:36,565 INFO L129 PetriNetUnfolder]: 1556/3783 cut-off events. [2021-12-28 03:07:36,565 INFO L130 PetriNetUnfolder]: For 28094/28102 co-relation queries the response was YES. [2021-12-28 03:07:36,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14920 conditions, 3783 events. 1556/3783 cut-off events. For 28094/28102 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 30827 event pairs, 840 based on Foata normal form. 1/3630 useless extension candidates. Maximal degree in co-relation 14847. Up to 2190 conditions per place. [2021-12-28 03:07:36,604 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 218 selfloop transitions, 58 changer transitions 5/416 dead transitions. [2021-12-28 03:07:36,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 416 transitions, 3453 flow [2021-12-28 03:07:36,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:07:36,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-28 03:07:36,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2779 transitions. [2021-12-28 03:07:36,613 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.692326856003986 [2021-12-28 03:07:36,613 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2779 transitions. [2021-12-28 03:07:36,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2779 transitions. [2021-12-28 03:07:36,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:36,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2779 transitions. [2021-12-28 03:07:36,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.38888888888889) internal successors, (2779), 18 states have internal predecessors, (2779), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:36,628 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:36,629 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:36,629 INFO L186 Difference]: Start difference. First operand has 346 places, 355 transitions, 2265 flow. Second operand 18 states and 2779 transitions. [2021-12-28 03:07:36,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 416 transitions, 3453 flow [2021-12-28 03:07:36,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 416 transitions, 3235 flow, removed 63 selfloop flow, removed 14 redundant places. [2021-12-28 03:07:36,709 INFO L242 Difference]: Finished difference. Result has 352 places, 361 transitions, 2354 flow [2021-12-28 03:07:36,709 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2053, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=300, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2354, PETRI_PLACES=352, PETRI_TRANSITIONS=361} [2021-12-28 03:07:36,710 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 151 predicate places. [2021-12-28 03:07:36,710 INFO L470 AbstractCegarLoop]: Abstraction has has 352 places, 361 transitions, 2354 flow [2021-12-28 03:07:36,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:36,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:36,711 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:36,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-28 03:07:36,711 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:36,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:36,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1439899105, now seen corresponding path program 15 times [2021-12-28 03:07:36,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:36,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89488255] [2021-12-28 03:07:36,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:36,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:36,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:37,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:37,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:37,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89488255] [2021-12-28 03:07:37,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89488255] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:37,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:37,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:37,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409759587] [2021-12-28 03:07:37,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:37,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:37,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:37,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:37,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=240, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:37,400 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:37,402 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 352 places, 361 transitions, 2354 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:37,402 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:37,402 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:37,402 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:38,479 INFO L129 PetriNetUnfolder]: 1607/3955 cut-off events. [2021-12-28 03:07:38,480 INFO L130 PetriNetUnfolder]: For 33138/33146 co-relation queries the response was YES. [2021-12-28 03:07:38,517 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15863 conditions, 3955 events. 1607/3955 cut-off events. For 33138/33146 co-relation queries the response was YES. Maximal size of possible extension queue 296. Compared 32735 event pairs, 838 based on Foata normal form. 1/3801 useless extension candidates. Maximal degree in co-relation 15786. Up to 2285 conditions per place. [2021-12-28 03:07:38,537 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 231 selfloop transitions, 63 changer transitions 5/434 dead transitions. [2021-12-28 03:07:38,538 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 434 transitions, 3737 flow [2021-12-28 03:07:38,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-28 03:07:38,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-12-28 03:07:38,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3089 transitions. [2021-12-28 03:07:38,542 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6926008968609866 [2021-12-28 03:07:38,542 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3089 transitions. [2021-12-28 03:07:38,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3089 transitions. [2021-12-28 03:07:38,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:38,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3089 transitions. [2021-12-28 03:07:38,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 154.45) internal successors, (3089), 20 states have internal predecessors, (3089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:38,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:38,552 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 223.0) internal successors, (4683), 21 states have internal predecessors, (4683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:38,552 INFO L186 Difference]: Start difference. First operand has 352 places, 361 transitions, 2354 flow. Second operand 20 states and 3089 transitions. [2021-12-28 03:07:38,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 434 transitions, 3737 flow [2021-12-28 03:07:38,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 434 transitions, 3520 flow, removed 68 selfloop flow, removed 13 redundant places. [2021-12-28 03:07:38,766 INFO L242 Difference]: Finished difference. Result has 361 places, 368 transitions, 2468 flow [2021-12-28 03:07:38,767 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=2468, PETRI_PLACES=361, PETRI_TRANSITIONS=368} [2021-12-28 03:07:38,768 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 160 predicate places. [2021-12-28 03:07:38,768 INFO L470 AbstractCegarLoop]: Abstraction has has 361 places, 368 transitions, 2468 flow [2021-12-28 03:07:38,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:38,768 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:38,769 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:38,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-28 03:07:38,769 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:38,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:38,770 INFO L85 PathProgramCache]: Analyzing trace with hash -765625463, now seen corresponding path program 16 times [2021-12-28 03:07:38,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:38,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1177775518] [2021-12-28 03:07:38,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:38,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:39,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:39,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:39,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1177775518] [2021-12-28 03:07:39,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1177775518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:39,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:39,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:39,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261846775] [2021-12-28 03:07:39,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:39,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:39,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:39,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:39,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:39,267 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:39,268 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 368 transitions, 2468 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:39,268 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:39,268 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:39,269 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:40,332 INFO L129 PetriNetUnfolder]: 1634/4097 cut-off events. [2021-12-28 03:07:40,333 INFO L130 PetriNetUnfolder]: For 36260/36282 co-relation queries the response was YES. [2021-12-28 03:07:40,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16508 conditions, 4097 events. 1634/4097 cut-off events. For 36260/36282 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 35207 event pairs, 649 based on Foata normal form. 14/3940 useless extension candidates. Maximal degree in co-relation 16427. Up to 2357 conditions per place. [2021-12-28 03:07:40,375 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 228 selfloop transitions, 67 changer transitions 5/435 dead transitions. [2021-12-28 03:07:40,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 435 transitions, 3832 flow [2021-12-28 03:07:40,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 03:07:40,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-28 03:07:40,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2931 transitions. [2021-12-28 03:07:40,379 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6917630398867123 [2021-12-28 03:07:40,379 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2931 transitions. [2021-12-28 03:07:40,379 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2931 transitions. [2021-12-28 03:07:40,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:40,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2931 transitions. [2021-12-28 03:07:40,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.26315789473685) internal successors, (2931), 19 states have internal predecessors, (2931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:40,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:40,387 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:40,387 INFO L186 Difference]: Start difference. First operand has 361 places, 368 transitions, 2468 flow. Second operand 19 states and 2931 transitions. [2021-12-28 03:07:40,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 435 transitions, 3832 flow [2021-12-28 03:07:40,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 362 places, 435 transitions, 3572 flow, removed 80 selfloop flow, removed 15 redundant places. [2021-12-28 03:07:40,483 INFO L242 Difference]: Finished difference. Result has 366 places, 378 transitions, 2556 flow [2021-12-28 03:07:40,484 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=307, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2556, PETRI_PLACES=366, PETRI_TRANSITIONS=378} [2021-12-28 03:07:40,484 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 165 predicate places. [2021-12-28 03:07:40,484 INFO L470 AbstractCegarLoop]: Abstraction has has 366 places, 378 transitions, 2556 flow [2021-12-28 03:07:40,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:40,485 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:40,485 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:40,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-28 03:07:40,485 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:40,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:40,486 INFO L85 PathProgramCache]: Analyzing trace with hash 1004685217, now seen corresponding path program 17 times [2021-12-28 03:07:40,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:40,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989601513] [2021-12-28 03:07:40,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:40,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:40,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:41,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:41,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:41,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989601513] [2021-12-28 03:07:41,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989601513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:41,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:41,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:41,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018063871] [2021-12-28 03:07:41,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:41,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:41,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:41,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:41,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:41,024 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:41,025 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 378 transitions, 2556 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:41,025 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:41,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:41,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:41,967 INFO L129 PetriNetUnfolder]: 1685/4151 cut-off events. [2021-12-28 03:07:41,968 INFO L130 PetriNetUnfolder]: For 37017/37027 co-relation queries the response was YES. [2021-12-28 03:07:42,006 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17149 conditions, 4151 events. 1685/4151 cut-off events. For 37017/37027 co-relation queries the response was YES. Maximal size of possible extension queue 331. Compared 35135 event pairs, 885 based on Foata normal form. 2/3991 useless extension candidates. Maximal degree in co-relation 17065. Up to 2384 conditions per place. [2021-12-28 03:07:42,023 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 240 selfloop transitions, 61 changer transitions 5/441 dead transitions. [2021-12-28 03:07:42,023 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 381 places, 441 transitions, 3900 flow [2021-12-28 03:07:42,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:07:42,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-28 03:07:42,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2781 transitions. [2021-12-28 03:07:42,026 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6928251121076233 [2021-12-28 03:07:42,026 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2781 transitions. [2021-12-28 03:07:42,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2781 transitions. [2021-12-28 03:07:42,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:42,026 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2781 transitions. [2021-12-28 03:07:42,029 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.5) internal successors, (2781), 18 states have internal predecessors, (2781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:42,031 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:42,032 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:42,032 INFO L186 Difference]: Start difference. First operand has 366 places, 378 transitions, 2556 flow. Second operand 18 states and 2781 transitions. [2021-12-28 03:07:42,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 381 places, 441 transitions, 3900 flow [2021-12-28 03:07:42,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 441 transitions, 3754 flow, removed 29 selfloop flow, removed 12 redundant places. [2021-12-28 03:07:42,120 INFO L242 Difference]: Finished difference. Result has 374 places, 385 transitions, 2754 flow [2021-12-28 03:07:42,120 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2417, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=378, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2754, PETRI_PLACES=374, PETRI_TRANSITIONS=385} [2021-12-28 03:07:42,120 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 173 predicate places. [2021-12-28 03:07:42,121 INFO L470 AbstractCegarLoop]: Abstraction has has 374 places, 385 transitions, 2754 flow [2021-12-28 03:07:42,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:42,121 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:42,121 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:42,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-28 03:07:42,122 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:42,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:42,122 INFO L85 PathProgramCache]: Analyzing trace with hash -735021351, now seen corresponding path program 18 times [2021-12-28 03:07:42,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:42,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801859175] [2021-12-28 03:07:42,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:42,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:42,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:42,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:42,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801859175] [2021-12-28 03:07:42,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801859175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:42,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:42,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:42,665 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205097846] [2021-12-28 03:07:42,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:42,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:42,666 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:42,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:42,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:42,668 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:42,670 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 385 transitions, 2754 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:42,670 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:42,670 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:42,670 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:43,765 INFO L129 PetriNetUnfolder]: 1697/4164 cut-off events. [2021-12-28 03:07:43,766 INFO L130 PetriNetUnfolder]: For 43192/43202 co-relation queries the response was YES. [2021-12-28 03:07:43,807 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17666 conditions, 4164 events. 1697/4164 cut-off events. For 43192/43202 co-relation queries the response was YES. Maximal size of possible extension queue 332. Compared 35384 event pairs, 889 based on Foata normal form. 2/4002 useless extension candidates. Maximal degree in co-relation 17579. Up to 2435 conditions per place. [2021-12-28 03:07:43,825 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 235 selfloop transitions, 66 changer transitions 5/441 dead transitions. [2021-12-28 03:07:43,826 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 441 transitions, 4012 flow [2021-12-28 03:07:43,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:07:43,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-28 03:07:43,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2774 transitions. [2021-12-28 03:07:43,830 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6910812157448929 [2021-12-28 03:07:43,830 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2774 transitions. [2021-12-28 03:07:43,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2774 transitions. [2021-12-28 03:07:43,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:43,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2774 transitions. [2021-12-28 03:07:43,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.11111111111111) internal successors, (2774), 18 states have internal predecessors, (2774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:43,838 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:43,839 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:43,839 INFO L186 Difference]: Start difference. First operand has 374 places, 385 transitions, 2754 flow. Second operand 18 states and 2774 transitions. [2021-12-28 03:07:43,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 441 transitions, 4012 flow [2021-12-28 03:07:43,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 377 places, 441 transitions, 3816 flow, removed 68 selfloop flow, removed 12 redundant places. [2021-12-28 03:07:43,949 INFO L242 Difference]: Finished difference. Result has 382 places, 393 transitions, 2876 flow [2021-12-28 03:07:43,950 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2560, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=322, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2876, PETRI_PLACES=382, PETRI_TRANSITIONS=393} [2021-12-28 03:07:43,950 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 181 predicate places. [2021-12-28 03:07:43,950 INFO L470 AbstractCegarLoop]: Abstraction has has 382 places, 393 transitions, 2876 flow [2021-12-28 03:07:43,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:43,951 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:43,951 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:43,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-28 03:07:43,952 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:43,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:43,952 INFO L85 PathProgramCache]: Analyzing trace with hash -838500479, now seen corresponding path program 19 times [2021-12-28 03:07:43,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:43,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168404735] [2021-12-28 03:07:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:43,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:44,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:44,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:44,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168404735] [2021-12-28 03:07:44,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168404735] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:44,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:44,539 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:44,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248062739] [2021-12-28 03:07:44,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:44,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:44,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:44,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:44,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:44,543 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:44,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 382 places, 393 transitions, 2876 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:44,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:44,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:44,545 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:45,675 INFO L129 PetriNetUnfolder]: 1705/4249 cut-off events. [2021-12-28 03:07:45,676 INFO L130 PetriNetUnfolder]: For 43744/43752 co-relation queries the response was YES. [2021-12-28 03:07:45,716 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17885 conditions, 4249 events. 1705/4249 cut-off events. For 43744/43752 co-relation queries the response was YES. Maximal size of possible extension queue 338. Compared 36672 event pairs, 771 based on Foata normal form. 5/4066 useless extension candidates. Maximal degree in co-relation 17794. Up to 2425 conditions per place. [2021-12-28 03:07:45,732 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 240 selfloop transitions, 66 changer transitions 5/446 dead transitions. [2021-12-28 03:07:45,732 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 446 transitions, 4119 flow [2021-12-28 03:07:45,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:07:45,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-28 03:07:45,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2770 transitions. [2021-12-28 03:07:45,736 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6900847035376183 [2021-12-28 03:07:45,736 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2770 transitions. [2021-12-28 03:07:45,736 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2770 transitions. [2021-12-28 03:07:45,737 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:45,737 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2770 transitions. [2021-12-28 03:07:45,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.88888888888889) internal successors, (2770), 18 states have internal predecessors, (2770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:45,743 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:45,743 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:45,743 INFO L186 Difference]: Start difference. First operand has 382 places, 393 transitions, 2876 flow. Second operand 18 states and 2770 transitions. [2021-12-28 03:07:45,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 397 places, 446 transitions, 4119 flow [2021-12-28 03:07:45,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 446 transitions, 3891 flow, removed 54 selfloop flow, removed 14 redundant places. [2021-12-28 03:07:45,868 INFO L242 Difference]: Finished difference. Result has 388 places, 399 transitions, 2929 flow [2021-12-28 03:07:45,869 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2650, PETRI_DIFFERENCE_MINUEND_PLACES=366, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2929, PETRI_PLACES=388, PETRI_TRANSITIONS=399} [2021-12-28 03:07:45,869 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 187 predicate places. [2021-12-28 03:07:45,869 INFO L470 AbstractCegarLoop]: Abstraction has has 388 places, 399 transitions, 2929 flow [2021-12-28 03:07:45,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:45,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:45,870 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:45,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-28 03:07:45,871 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:45,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:45,871 INFO L85 PathProgramCache]: Analyzing trace with hash 386610843, now seen corresponding path program 20 times [2021-12-28 03:07:45,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:45,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703750355] [2021-12-28 03:07:45,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:45,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:45,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:46,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:46,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:46,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703750355] [2021-12-28 03:07:46,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703750355] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:46,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:46,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:46,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737067282] [2021-12-28 03:07:46,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:46,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:46,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:46,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:46,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:46,420 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:46,422 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 388 places, 399 transitions, 2929 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:46,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:46,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:46,422 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:47,571 INFO L129 PetriNetUnfolder]: 1711/4330 cut-off events. [2021-12-28 03:07:47,572 INFO L130 PetriNetUnfolder]: For 45289/45310 co-relation queries the response was YES. [2021-12-28 03:07:47,630 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18060 conditions, 4330 events. 1711/4330 cut-off events. For 45289/45310 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 38021 event pairs, 709 based on Foata normal form. 11/4159 useless extension candidates. Maximal degree in co-relation 17966. Up to 2461 conditions per place. [2021-12-28 03:07:47,655 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 247 selfloop transitions, 63 changer transitions 5/450 dead transitions. [2021-12-28 03:07:47,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 450 transitions, 4149 flow [2021-12-28 03:07:47,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:07:47,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-28 03:07:47,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2772 transitions. [2021-12-28 03:07:47,659 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6905829596412556 [2021-12-28 03:07:47,659 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2772 transitions. [2021-12-28 03:07:47,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2772 transitions. [2021-12-28 03:07:47,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:47,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2772 transitions. [2021-12-28 03:07:47,664 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.0) internal successors, (2772), 18 states have internal predecessors, (2772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:47,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:47,668 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:47,668 INFO L186 Difference]: Start difference. First operand has 388 places, 399 transitions, 2929 flow. Second operand 18 states and 2772 transitions. [2021-12-28 03:07:47,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 450 transitions, 4149 flow [2021-12-28 03:07:47,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 388 places, 450 transitions, 3890 flow, removed 49 selfloop flow, removed 15 redundant places. [2021-12-28 03:07:47,814 INFO L242 Difference]: Finished difference. Result has 392 places, 403 transitions, 2886 flow [2021-12-28 03:07:47,814 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2675, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2886, PETRI_PLACES=392, PETRI_TRANSITIONS=403} [2021-12-28 03:07:47,815 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 191 predicate places. [2021-12-28 03:07:47,815 INFO L470 AbstractCegarLoop]: Abstraction has has 392 places, 403 transitions, 2886 flow [2021-12-28 03:07:47,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:47,815 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:47,816 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:47,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-28 03:07:47,816 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:47,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:47,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1947666141, now seen corresponding path program 21 times [2021-12-28 03:07:47,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:47,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626447718] [2021-12-28 03:07:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:47,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:47,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:48,436 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:48,436 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:48,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626447718] [2021-12-28 03:07:48,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626447718] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:48,437 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:48,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:48,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404660928] [2021-12-28 03:07:48,437 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:48,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:48,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:48,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:48,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:48,440 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:48,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 403 transitions, 2886 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:48,442 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:48,442 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:48,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:49,515 INFO L129 PetriNetUnfolder]: 1711/4346 cut-off events. [2021-12-28 03:07:49,515 INFO L130 PetriNetUnfolder]: For 45111/45132 co-relation queries the response was YES. [2021-12-28 03:07:49,551 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17830 conditions, 4346 events. 1711/4346 cut-off events. For 45111/45132 co-relation queries the response was YES. Maximal size of possible extension queue 335. Compared 38034 event pairs, 712 based on Foata normal form. 11/4171 useless extension candidates. Maximal degree in co-relation 17735. Up to 2447 conditions per place. [2021-12-28 03:07:49,565 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 247 selfloop transitions, 64 changer transitions 5/451 dead transitions. [2021-12-28 03:07:49,565 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 451 transitions, 4087 flow [2021-12-28 03:07:49,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:07:49,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-28 03:07:49,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2768 transitions. [2021-12-28 03:07:49,568 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6895864474339811 [2021-12-28 03:07:49,568 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2768 transitions. [2021-12-28 03:07:49,568 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2768 transitions. [2021-12-28 03:07:49,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:49,569 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2768 transitions. [2021-12-28 03:07:49,572 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.77777777777777) internal successors, (2768), 18 states have internal predecessors, (2768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:49,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:49,575 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:49,575 INFO L186 Difference]: Start difference. First operand has 392 places, 403 transitions, 2886 flow. Second operand 18 states and 2768 transitions. [2021-12-28 03:07:49,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 451 transitions, 4087 flow [2021-12-28 03:07:49,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 392 places, 451 transitions, 3901 flow, removed 32 selfloop flow, removed 15 redundant places. [2021-12-28 03:07:49,693 INFO L242 Difference]: Finished difference. Result has 396 places, 406 transitions, 2901 flow [2021-12-28 03:07:49,694 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2702, PETRI_DIFFERENCE_MINUEND_PLACES=375, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=340, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2901, PETRI_PLACES=396, PETRI_TRANSITIONS=406} [2021-12-28 03:07:49,694 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 195 predicate places. [2021-12-28 03:07:49,694 INFO L470 AbstractCegarLoop]: Abstraction has has 396 places, 406 transitions, 2901 flow [2021-12-28 03:07:49,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:49,695 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:49,695 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:49,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-28 03:07:49,695 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:49,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:49,695 INFO L85 PathProgramCache]: Analyzing trace with hash 109708599, now seen corresponding path program 22 times [2021-12-28 03:07:49,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:49,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802975798] [2021-12-28 03:07:49,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:49,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:50,150 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:50,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:50,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802975798] [2021-12-28 03:07:50,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802975798] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:50,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:50,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:50,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257070382] [2021-12-28 03:07:50,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:50,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:50,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:50,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:50,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:50,153 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:50,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 406 transitions, 2901 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:50,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:50,155 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:50,155 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:51,130 INFO L129 PetriNetUnfolder]: 1711/4308 cut-off events. [2021-12-28 03:07:51,130 INFO L130 PetriNetUnfolder]: For 44886/44908 co-relation queries the response was YES. [2021-12-28 03:07:51,173 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17745 conditions, 4308 events. 1711/4308 cut-off events. For 44886/44908 co-relation queries the response was YES. Maximal size of possible extension queue 344. Compared 37842 event pairs, 701 based on Foata normal form. 14/4142 useless extension candidates. Maximal degree in co-relation 17648. Up to 2453 conditions per place. [2021-12-28 03:07:51,188 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 251 selfloop transitions, 62 changer transitions 5/453 dead transitions. [2021-12-28 03:07:51,189 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 453 transitions, 4096 flow [2021-12-28 03:07:51,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:07:51,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-28 03:07:51,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2767 transitions. [2021-12-28 03:07:51,193 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6893373193821625 [2021-12-28 03:07:51,193 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2767 transitions. [2021-12-28 03:07:51,193 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2767 transitions. [2021-12-28 03:07:51,194 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:51,194 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2767 transitions. [2021-12-28 03:07:51,197 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.72222222222223) internal successors, (2767), 18 states have internal predecessors, (2767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:51,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:51,200 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:51,200 INFO L186 Difference]: Start difference. First operand has 396 places, 406 transitions, 2901 flow. Second operand 18 states and 2767 transitions. [2021-12-28 03:07:51,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 453 transitions, 4096 flow [2021-12-28 03:07:51,361 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 453 transitions, 3904 flow, removed 33 selfloop flow, removed 15 redundant places. [2021-12-28 03:07:51,367 INFO L242 Difference]: Finished difference. Result has 400 places, 409 transitions, 2887 flow [2021-12-28 03:07:51,367 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2713, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=345, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2887, PETRI_PLACES=400, PETRI_TRANSITIONS=409} [2021-12-28 03:07:51,367 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 199 predicate places. [2021-12-28 03:07:51,367 INFO L470 AbstractCegarLoop]: Abstraction has has 400 places, 409 transitions, 2887 flow [2021-12-28 03:07:51,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:51,368 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:51,368 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:51,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-28 03:07:51,368 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:51,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:51,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1019999163, now seen corresponding path program 23 times [2021-12-28 03:07:51,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:51,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129740393] [2021-12-28 03:07:51,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:51,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:51,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:51,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:51,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129740393] [2021-12-28 03:07:51,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129740393] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:51,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:51,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:51,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587340055] [2021-12-28 03:07:51,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:51,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:51,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:51,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:51,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:51,934 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:51,935 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 400 places, 409 transitions, 2887 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:51,935 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:51,935 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:51,935 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:52,994 INFO L129 PetriNetUnfolder]: 1764/4472 cut-off events. [2021-12-28 03:07:52,994 INFO L130 PetriNetUnfolder]: For 48725/48745 co-relation queries the response was YES. [2021-12-28 03:07:53,039 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18488 conditions, 4472 events. 1764/4472 cut-off events. For 48725/48745 co-relation queries the response was YES. Maximal size of possible extension queue 354. Compared 39453 event pairs, 691 based on Foata normal form. 9/4294 useless extension candidates. Maximal degree in co-relation 18389. Up to 2392 conditions per place. [2021-12-28 03:07:53,054 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 253 selfloop transitions, 82 changer transitions 5/475 dead transitions. [2021-12-28 03:07:53,054 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 475 transitions, 4384 flow [2021-12-28 03:07:53,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 03:07:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-28 03:07:53,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2928 transitions. [2021-12-28 03:07:53,057 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6910549917394383 [2021-12-28 03:07:53,057 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2928 transitions. [2021-12-28 03:07:53,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2928 transitions. [2021-12-28 03:07:53,058 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:53,058 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2928 transitions. [2021-12-28 03:07:53,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.10526315789474) internal successors, (2928), 19 states have internal predecessors, (2928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:53,064 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:53,065 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:53,065 INFO L186 Difference]: Start difference. First operand has 400 places, 409 transitions, 2887 flow. Second operand 19 states and 2928 transitions. [2021-12-28 03:07:53,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 475 transitions, 4384 flow [2021-12-28 03:07:53,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 475 transitions, 4285 flow, removed 4 selfloop flow, removed 14 redundant places. [2021-12-28 03:07:53,232 INFO L242 Difference]: Finished difference. Result has 408 places, 421 transitions, 3263 flow [2021-12-28 03:07:53,233 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2790, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3263, PETRI_PLACES=408, PETRI_TRANSITIONS=421} [2021-12-28 03:07:53,234 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 207 predicate places. [2021-12-28 03:07:53,234 INFO L470 AbstractCegarLoop]: Abstraction has has 408 places, 421 transitions, 3263 flow [2021-12-28 03:07:53,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:53,234 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:53,235 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:53,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-28 03:07:53,235 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:53,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:53,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1739466355, now seen corresponding path program 24 times [2021-12-28 03:07:53,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:53,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607772640] [2021-12-28 03:07:53,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:53,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:53,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:53,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:53,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:53,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607772640] [2021-12-28 03:07:53,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607772640] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:53,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:53,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:53,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851758886] [2021-12-28 03:07:53,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:53,845 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:53,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:53,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:53,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:53,847 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:53,849 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 421 transitions, 3263 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:53,849 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:53,849 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:53,849 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:54,923 INFO L129 PetriNetUnfolder]: 1806/4610 cut-off events. [2021-12-28 03:07:54,924 INFO L130 PetriNetUnfolder]: For 59771/59791 co-relation queries the response was YES. [2021-12-28 03:07:54,971 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19822 conditions, 4610 events. 1806/4610 cut-off events. For 59771/59791 co-relation queries the response was YES. Maximal size of possible extension queue 365. Compared 41121 event pairs, 747 based on Foata normal form. 9/4423 useless extension candidates. Maximal degree in co-relation 19719. Up to 2547 conditions per place. [2021-12-28 03:07:54,986 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 272 selfloop transitions, 73 changer transitions 5/485 dead transitions. [2021-12-28 03:07:54,986 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 424 places, 485 transitions, 4859 flow [2021-12-28 03:07:54,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 03:07:54,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-28 03:07:54,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2930 transitions. [2021-12-28 03:07:54,989 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.691527023837621 [2021-12-28 03:07:54,989 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2930 transitions. [2021-12-28 03:07:54,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2930 transitions. [2021-12-28 03:07:54,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:54,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2930 transitions. [2021-12-28 03:07:54,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.21052631578948) internal successors, (2930), 19 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:54,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:54,996 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:54,996 INFO L186 Difference]: Start difference. First operand has 408 places, 421 transitions, 3263 flow. Second operand 19 states and 2930 transitions. [2021-12-28 03:07:54,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 424 places, 485 transitions, 4859 flow [2021-12-28 03:07:55,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 485 transitions, 4562 flow, removed 103 selfloop flow, removed 13 redundant places. [2021-12-28 03:07:55,167 INFO L242 Difference]: Finished difference. Result has 416 places, 427 transitions, 3392 flow [2021-12-28 03:07:55,168 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=2998, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=421, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=351, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3392, PETRI_PLACES=416, PETRI_TRANSITIONS=427} [2021-12-28 03:07:55,168 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 215 predicate places. [2021-12-28 03:07:55,168 INFO L470 AbstractCegarLoop]: Abstraction has has 416 places, 427 transitions, 3392 flow [2021-12-28 03:07:55,169 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:55,169 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:55,169 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:55,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-28 03:07:55,170 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:55,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:55,170 INFO L85 PathProgramCache]: Analyzing trace with hash -930338993, now seen corresponding path program 25 times [2021-12-28 03:07:55,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:55,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192649732] [2021-12-28 03:07:55,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:55,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:55,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:55,658 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:55,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192649732] [2021-12-28 03:07:55,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192649732] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:55,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:55,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:55,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73972144] [2021-12-28 03:07:55,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:55,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:55,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:55,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:55,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:55,661 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:55,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 427 transitions, 3392 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:55,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:55,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:55,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:56,717 INFO L129 PetriNetUnfolder]: 1816/4631 cut-off events. [2021-12-28 03:07:56,718 INFO L130 PetriNetUnfolder]: For 59612/59634 co-relation queries the response was YES. [2021-12-28 03:07:56,765 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19982 conditions, 4631 events. 1816/4631 cut-off events. For 59612/59634 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 41476 event pairs, 772 based on Foata normal form. 14/4440 useless extension candidates. Maximal degree in co-relation 19876. Up to 2642 conditions per place. [2021-12-28 03:07:56,783 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 271 selfloop transitions, 67 changer transitions 5/478 dead transitions. [2021-12-28 03:07:56,784 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 478 transitions, 4843 flow [2021-12-28 03:07:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:07:56,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-28 03:07:56,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2766 transitions. [2021-12-28 03:07:56,786 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6890881913303438 [2021-12-28 03:07:56,786 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2766 transitions. [2021-12-28 03:07:56,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2766 transitions. [2021-12-28 03:07:56,786 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:56,786 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2766 transitions. [2021-12-28 03:07:56,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 153.66666666666666) internal successors, (2766), 18 states have internal predecessors, (2766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:56,791 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:56,791 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:56,791 INFO L186 Difference]: Start difference. First operand has 416 places, 427 transitions, 3392 flow. Second operand 18 states and 2766 transitions. [2021-12-28 03:07:56,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 478 transitions, 4843 flow [2021-12-28 03:07:56,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 478 transitions, 4546 flow, removed 95 selfloop flow, removed 14 redundant places. [2021-12-28 03:07:56,999 INFO L242 Difference]: Finished difference. Result has 421 places, 435 transitions, 3468 flow [2021-12-28 03:07:56,999 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3103, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=427, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=365, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3468, PETRI_PLACES=421, PETRI_TRANSITIONS=435} [2021-12-28 03:07:57,000 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 220 predicate places. [2021-12-28 03:07:57,000 INFO L470 AbstractCegarLoop]: Abstraction has has 421 places, 435 transitions, 3468 flow [2021-12-28 03:07:57,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:57,000 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:57,001 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:57,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-28 03:07:57,001 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:57,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:57,002 INFO L85 PathProgramCache]: Analyzing trace with hash -907769797, now seen corresponding path program 26 times [2021-12-28 03:07:57,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:57,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520094361] [2021-12-28 03:07:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:57,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:57,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:57,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:57,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:57,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520094361] [2021-12-28 03:07:57,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520094361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:57,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:57,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:57,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225173644] [2021-12-28 03:07:57,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:57,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:57,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:57,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:57,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:57,594 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:57,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 421 places, 435 transitions, 3468 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:57,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:57,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:57,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:58,828 INFO L129 PetriNetUnfolder]: 1856/4657 cut-off events. [2021-12-28 03:07:58,828 INFO L130 PetriNetUnfolder]: For 62722/62732 co-relation queries the response was YES. [2021-12-28 03:07:58,877 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20457 conditions, 4657 events. 1856/4657 cut-off events. For 62722/62732 co-relation queries the response was YES. Maximal size of possible extension queue 382. Compared 41330 event pairs, 949 based on Foata normal form. 2/4462 useless extension candidates. Maximal degree in co-relation 20348. Up to 2589 conditions per place. [2021-12-28 03:07:58,894 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 283 selfloop transitions, 79 changer transitions 5/502 dead transitions. [2021-12-28 03:07:58,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 437 places, 502 transitions, 5063 flow [2021-12-28 03:07:58,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-28 03:07:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-12-28 03:07:58,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2930 transitions. [2021-12-28 03:07:58,896 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.691527023837621 [2021-12-28 03:07:58,897 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2930 transitions. [2021-12-28 03:07:58,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2930 transitions. [2021-12-28 03:07:58,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:58,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2930 transitions. [2021-12-28 03:07:58,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 154.21052631578948) internal successors, (2930), 19 states have internal predecessors, (2930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:58,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:58,902 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 223.0) internal successors, (4460), 20 states have internal predecessors, (4460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:58,902 INFO L186 Difference]: Start difference. First operand has 421 places, 435 transitions, 3468 flow. Second operand 19 states and 2930 transitions. [2021-12-28 03:07:58,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 437 places, 502 transitions, 5063 flow [2021-12-28 03:07:59,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 502 transitions, 4831 flow, removed 77 selfloop flow, removed 11 redundant places. [2021-12-28 03:07:59,067 INFO L242 Difference]: Finished difference. Result has 432 places, 445 transitions, 3685 flow [2021-12-28 03:07:59,067 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3238, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=435, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=3685, PETRI_PLACES=432, PETRI_TRANSITIONS=445} [2021-12-28 03:07:59,068 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 231 predicate places. [2021-12-28 03:07:59,068 INFO L470 AbstractCegarLoop]: Abstraction has has 432 places, 445 transitions, 3685 flow [2021-12-28 03:07:59,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:59,069 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:59,069 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:59,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-28 03:07:59,069 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:59,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:59,070 INFO L85 PathProgramCache]: Analyzing trace with hash 26052429, now seen corresponding path program 27 times [2021-12-28 03:07:59,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:59,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292456637] [2021-12-28 03:07:59,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:59,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:59,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:59,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:59,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:59,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292456637] [2021-12-28 03:07:59,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292456637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:59,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:59,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:07:59,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743451011] [2021-12-28 03:07:59,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:59,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:07:59,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:59,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:07:59,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:59,681 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:07:59,683 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 445 transitions, 3685 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:59,683 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:59,683 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:07:59,683 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:08:00,944 INFO L129 PetriNetUnfolder]: 1898/4772 cut-off events. [2021-12-28 03:08:00,945 INFO L130 PetriNetUnfolder]: For 74943/74953 co-relation queries the response was YES. [2021-12-28 03:08:00,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21821 conditions, 4772 events. 1898/4772 cut-off events. For 74943/74953 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 42615 event pairs, 1000 based on Foata normal form. 2/4575 useless extension candidates. Maximal degree in co-relation 21707. Up to 2726 conditions per place. [2021-12-28 03:08:01,015 INFO L132 encePairwiseOnDemand]: 204/223 looper letters, 294 selfloop transitions, 72 changer transitions 5/506 dead transitions. [2021-12-28 03:08:01,015 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 506 transitions, 5395 flow [2021-12-28 03:08:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-28 03:08:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-12-28 03:08:01,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 2780 transitions. [2021-12-28 03:08:01,021 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6925759840558047 [2021-12-28 03:08:01,022 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 2780 transitions. [2021-12-28 03:08:01,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 2780 transitions. [2021-12-28 03:08:01,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:08:01,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 2780 transitions. [2021-12-28 03:08:01,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 154.44444444444446) internal successors, (2780), 18 states have internal predecessors, (2780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:08:01,026 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:08:01,026 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 223.0) internal successors, (4237), 19 states have internal predecessors, (4237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:08:01,027 INFO L186 Difference]: Start difference. First operand has 432 places, 445 transitions, 3685 flow. Second operand 18 states and 2780 transitions. [2021-12-28 03:08:01,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 506 transitions, 5395 flow [2021-12-28 03:08:01,237 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 506 transitions, 5093 flow, removed 101 selfloop flow, removed 13 redundant places. [2021-12-28 03:08:01,242 INFO L242 Difference]: Finished difference. Result has 439 places, 451 transitions, 3824 flow [2021-12-28 03:08:01,243 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=223, PETRI_DIFFERENCE_MINUEND_FLOW=3389, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=445, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=376, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3824, PETRI_PLACES=439, PETRI_TRANSITIONS=451} [2021-12-28 03:08:01,243 INFO L334 CegarLoopForPetriNet]: 201 programPoint places, 238 predicate places. [2021-12-28 03:08:01,243 INFO L470 AbstractCegarLoop]: Abstraction has has 439 places, 451 transitions, 3824 flow [2021-12-28 03:08:01,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:08:01,244 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:08:01,244 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:08:01,244 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-28 03:08:01,244 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:08:01,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:08:01,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1615365353, now seen corresponding path program 28 times [2021-12-28 03:08:01,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:08:01,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414083818] [2021-12-28 03:08:01,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:08:01,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:08:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:08:01,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:08:01,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:08:01,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414083818] [2021-12-28 03:08:01,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414083818] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:08:01,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:08:01,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-28 03:08:01,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506957551] [2021-12-28 03:08:01,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:08:01,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-28 03:08:01,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:08:01,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-28 03:08:01,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:08:01,825 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 223 [2021-12-28 03:08:01,826 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 451 transitions, 3824 flow. Second operand has 18 states, 18 states have (on average 148.83333333333334) internal successors, (2679), 18 states have internal predecessors, (2679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:08:01,826 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:08:01,826 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 223 [2021-12-28 03:08:01,826 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand