./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF --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 846c6ea342419c7ea85c72de8af40f1cf8af72c22131b8a3f2ebdacec113c699 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:57:21,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:57:21,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:57:21,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:57:21,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:57:21,158 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:57:21,160 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:57:21,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:57:21,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:57:21,166 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:57:21,167 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:57:21,169 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:57:21,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:57:21,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:57:21,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:57:21,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:57:21,176 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:57:21,177 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:57:21,180 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:57:21,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:57:21,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:57:21,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:57:21,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:57:21,189 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:57:21,193 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:57:21,193 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:57:21,194 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:57:21,195 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:57:21,196 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:57:21,197 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:57:21,197 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:57:21,198 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:57:21,199 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:57:21,200 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:57:21,201 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:57:21,202 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:57:21,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:57:21,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:57:21,203 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:57:21,205 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:57:21,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:57:21,206 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 06:57:21,243 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:57:21,243 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:57:21,244 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:57:21,244 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:57:21,245 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 06:57:21,245 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 06:57:21,246 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:57:21,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:57:21,247 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:57:21,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:57:21,248 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 06:57:21,248 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:57:21,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 06:57:21,249 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:57:21,249 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 06:57:21,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 06:57:21,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 06:57:21,250 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 06:57:21,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:57:21,255 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:57:21,255 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 06:57:21,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:57:21,256 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:57:21,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 06:57:21,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:57:21,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:57:21,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 06:57:21,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 06:57:21,258 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:57:21,260 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 06:57:21,260 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 06:57:21,260 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 06:57:21,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 06:57:21,261 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:57:21,261 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 846c6ea342419c7ea85c72de8af40f1cf8af72c22131b8a3f2ebdacec113c699 [2021-11-20 06:57:21,614 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:57:21,646 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:57:21,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:57:21,650 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:57:21,651 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:57:21,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2021-11-20 06:57:21,738 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/data/a298fe1ac/735443999bd2442b9484ba995a7f98a0/FLAG23fcd576a [2021-11-20 06:57:22,292 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:57:22,294 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c [2021-11-20 06:57:22,308 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/data/a298fe1ac/735443999bd2442b9484ba995a7f98a0/FLAG23fcd576a [2021-11-20 06:57:22,606 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/data/a298fe1ac/735443999bd2442b9484ba995a7f98a0 [2021-11-20 06:57:22,608 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:57:22,610 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:57:22,612 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:57:22,612 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:57:22,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:57:22,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:22" (1/1) ... [2021-11-20 06:57:22,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28f4c906 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:22, skipping insertion in model container [2021-11-20 06:57:22,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:57:22" (1/1) ... [2021-11-20 06:57:22,626 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:57:22,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:57:22,889 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c[2495,2508] [2021-11-20 06:57:22,895 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:57:22,904 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:57:22,930 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/sv-benchmarks/c/weaver/chl-file-item-symm.wvr.c[2495,2508] [2021-11-20 06:57:22,933 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:57:22,949 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:57:22,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:22 WrapperNode [2021-11-20 06:57:22,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:57:22,951 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:57:22,951 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:57:22,951 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:57:22,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:22" (1/1) ... [2021-11-20 06:57:22,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:22" (1/1) ... [2021-11-20 06:57:22,999 INFO L137 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 158 [2021-11-20 06:57:22,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:57:23,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:57:23,000 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:57:23,000 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:57:23,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:22" (1/1) ... [2021-11-20 06:57:23,010 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:22" (1/1) ... [2021-11-20 06:57:23,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:22" (1/1) ... [2021-11-20 06:57:23,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:22" (1/1) ... [2021-11-20 06:57:23,020 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:22" (1/1) ... [2021-11-20 06:57:23,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:22" (1/1) ... [2021-11-20 06:57:23,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:22" (1/1) ... [2021-11-20 06:57:23,029 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:57:23,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:57:23,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:57:23,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:57:23,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:22" (1/1) ... [2021-11-20 06:57:23,050 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 06:57:23,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:57:23,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 06:57:23,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b8bdc7c2-206d-4b55-8755-2d6bca59276c/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 06:57:23,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 06:57:23,143 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-20 06:57:23,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-20 06:57:23,144 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-20 06:57:23,144 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-20 06:57:23,144 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 06:57:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-20 06:57:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-20 06:57:23,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:57:23,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:57:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-20 06:57:23,146 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-20 06:57:23,148 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-20 06:57:23,275 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:57:23,277 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:57:23,677 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:57:23,693 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:57:23,693 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 06:57:23,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:23 BoogieIcfgContainer [2021-11-20 06:57:23,696 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:57:23,698 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 06:57:23,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 06:57:23,702 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 06:57:23,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 06:57:22" (1/3) ... [2021-11-20 06:57:23,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6829a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:23, skipping insertion in model container [2021-11-20 06:57:23,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:57:22" (2/3) ... [2021-11-20 06:57:23,704 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a6829a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 06:57:23, skipping insertion in model container [2021-11-20 06:57:23,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:57:23" (3/3) ... [2021-11-20 06:57:23,706 INFO L111 eAbstractionObserver]: Analyzing ICFG chl-file-item-symm.wvr.c [2021-11-20 06:57:23,712 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-20 06:57:23,712 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 06:57:23,713 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-20 06:57:23,713 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-20 06:57:23,763 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,764 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,765 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,767 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,768 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,769 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,769 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,769 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,770 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,770 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,770 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,770 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,770 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,771 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,772 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,773 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,773 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,773 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,773 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,773 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,774 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,774 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,774 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,774 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,775 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,776 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,776 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,776 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,776 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,776 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,777 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,777 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,777 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,777 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,778 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,778 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,778 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,778 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,778 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,779 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,779 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,779 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,779 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,780 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,781 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,782 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,783 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,790 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,791 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,792 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,793 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,794 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,795 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,800 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,801 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,802 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,804 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,806 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,806 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,806 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,807 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,813 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,814 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,815 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,817 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,818 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,819 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,820 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,821 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,822 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,823 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,825 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,826 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,826 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,828 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,832 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,833 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,833 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,833 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,834 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,834 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,834 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,835 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,836 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,836 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,837 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,837 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,837 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,838 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,839 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,839 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,840 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,841 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,842 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,843 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,844 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,845 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,846 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,847 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,848 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,849 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,850 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,851 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,852 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,853 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,854 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,855 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,857 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,858 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,859 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,860 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,861 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,863 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,868 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,869 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,869 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,869 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,869 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,870 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,870 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,870 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,874 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,875 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,876 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,876 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,876 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,876 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,877 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,877 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,877 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,878 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,878 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,888 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,892 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,902 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,903 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,903 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,903 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,904 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ret3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,904 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,904 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,905 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,905 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,905 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,905 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,906 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,906 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,906 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,907 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,910 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,913 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,913 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,913 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,914 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#res#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,915 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,916 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~a#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ret10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,917 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite14#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~ite13#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,918 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_minus_#in~b#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-20 06:57:23,921 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-20 06:57:23,983 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 06:57:23,991 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 [2021-11-20 06:57:23,991 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-20 06:57:24,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 198 places, 210 transitions, 436 flow [2021-11-20 06:57:24,103 INFO L129 PetriNetUnfolder]: 19/208 cut-off events. [2021-11-20 06:57:24,103 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-20 06:57:24,112 INFO L84 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 208 events. 19/208 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 414 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 131. Up to 2 conditions per place. [2021-11-20 06:57:24,113 INFO L82 GeneralOperation]: Start removeDead. Operand has 198 places, 210 transitions, 436 flow [2021-11-20 06:57:24,122 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 199 transitions, 410 flow [2021-11-20 06:57:24,176 INFO L129 PetriNetUnfolder]: 19/198 cut-off events. [2021-11-20 06:57:24,176 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-20 06:57:24,176 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:24,177 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:57:24,178 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:24,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:24,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1054999512, now seen corresponding path program 1 times [2021-11-20 06:57:24,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:24,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629510273] [2021-11-20 06:57:24,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:24,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:24,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:24,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:24,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629510273] [2021-11-20 06:57:24,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629510273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:24,831 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:24,831 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:24,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800239336] [2021-11-20 06:57:24,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:24,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:24,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:24,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:24,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:24,892 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:24,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 199 transitions, 410 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:24,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:24,902 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:24,903 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:25,581 INFO L129 PetriNetUnfolder]: 113/576 cut-off events. [2021-11-20 06:57:25,581 INFO L130 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2021-11-20 06:57:25,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 861 conditions, 576 events. 113/576 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2995 event pairs, 35 based on Foata normal form. 23/565 useless extension candidates. Maximal degree in co-relation 655. Up to 123 conditions per place. [2021-11-20 06:57:25,601 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 81 selfloop transitions, 5 changer transitions 44/287 dead transitions. [2021-11-20 06:57:25,601 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 287 transitions, 876 flow [2021-11-20 06:57:25,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-20 06:57:25,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-11-20 06:57:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 4328 transitions. [2021-11-20 06:57:25,639 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8243809523809524 [2021-11-20 06:57:25,640 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 4328 transitions. [2021-11-20 06:57:25,641 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 4328 transitions. [2021-11-20 06:57:25,654 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:25,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 4328 transitions. [2021-11-20 06:57:25,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 173.12) internal successors, (4328), 25 states have internal predecessors, (4328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:25,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 210.0) internal successors, (5460), 26 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:25,745 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 210.0) internal successors, (5460), 26 states have internal predecessors, (5460), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:25,748 INFO L186 Difference]: Start difference. First operand has 187 places, 199 transitions, 410 flow. Second operand 25 states and 4328 transitions. [2021-11-20 06:57:25,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 287 transitions, 876 flow [2021-11-20 06:57:25,755 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 287 transitions, 848 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-20 06:57:25,764 INFO L242 Difference]: Finished difference. Result has 229 places, 193 transitions, 473 flow [2021-11-20 06:57:25,766 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=473, PETRI_PLACES=229, PETRI_TRANSITIONS=193} [2021-11-20 06:57:25,770 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 42 predicate places. [2021-11-20 06:57:25,771 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 193 transitions, 473 flow [2021-11-20 06:57:25,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:25,772 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:25,773 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] [2021-11-20 06:57:25,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 06:57:25,773 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:25,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1250873480, now seen corresponding path program 1 times [2021-11-20 06:57:25,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:25,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559141348] [2021-11-20 06:57:25,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:25,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:25,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:25,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:25,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559141348] [2021-11-20 06:57:25,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559141348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:25,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:25,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:57:25,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901667819] [2021-11-20 06:57:25,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:25,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:57:25,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:57:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:57:25,885 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-11-20 06:57:25,888 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 193 transitions, 473 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:25,888 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:25,889 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-11-20 06:57:25,895 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:26,084 INFO L129 PetriNetUnfolder]: 70/664 cut-off events. [2021-11-20 06:57:26,084 INFO L130 PetriNetUnfolder]: For 661/667 co-relation queries the response was YES. [2021-11-20 06:57:26,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 664 events. 70/664 cut-off events. For 661/667 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 3968 event pairs, 20 based on Foata normal form. 0/609 useless extension candidates. Maximal degree in co-relation 1096. Up to 34 conditions per place. [2021-11-20 06:57:26,099 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 15 selfloop transitions, 3 changer transitions 0/199 dead transitions. [2021-11-20 06:57:26,099 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 199 transitions, 524 flow [2021-11-20 06:57:26,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:57:26,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:57:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2021-11-20 06:57:26,102 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2021-11-20 06:57:26,102 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2021-11-20 06:57:26,103 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2021-11-20 06:57:26,103 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:26,103 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2021-11-20 06:57:26,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:26,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:26,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:26,109 INFO L186 Difference]: Start difference. First operand has 229 places, 193 transitions, 473 flow. Second operand 3 states and 591 transitions. [2021-11-20 06:57:26,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 199 transitions, 524 flow [2021-11-20 06:57:26,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 199 transitions, 505 flow, removed 9 selfloop flow, removed 10 redundant places. [2021-11-20 06:57:26,132 INFO L242 Difference]: Finished difference. Result has 202 places, 196 transitions, 484 flow [2021-11-20 06:57:26,132 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=454, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=190, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=484, PETRI_PLACES=202, PETRI_TRANSITIONS=196} [2021-11-20 06:57:26,133 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 15 predicate places. [2021-11-20 06:57:26,134 INFO L470 AbstractCegarLoop]: Abstraction has has 202 places, 196 transitions, 484 flow [2021-11-20 06:57:26,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:26,134 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:26,135 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] [2021-11-20 06:57:26,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 06:57:26,135 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:26,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1419504856, now seen corresponding path program 2 times [2021-11-20 06:57:26,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:26,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514648708] [2021-11-20 06:57:26,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:26,137 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:26,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:26,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:26,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514648708] [2021-11-20 06:57:26,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514648708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:26,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:26,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:57:26,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145259824] [2021-11-20 06:57:26,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:26,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:57:26,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:26,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:57:26,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:57:26,235 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-11-20 06:57:26,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 196 transitions, 484 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:26,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:26,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-11-20 06:57:26,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:26,392 INFO L129 PetriNetUnfolder]: 53/565 cut-off events. [2021-11-20 06:57:26,392 INFO L130 PetriNetUnfolder]: For 353/376 co-relation queries the response was YES. [2021-11-20 06:57:26,397 INFO L84 FinitePrefix]: Finished finitePrefix Result has 892 conditions, 565 events. 53/565 cut-off events. For 353/376 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 2956 event pairs, 24 based on Foata normal form. 8/533 useless extension candidates. Maximal degree in co-relation 798. Up to 23 conditions per place. [2021-11-20 06:57:26,401 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/202 dead transitions. [2021-11-20 06:57:26,401 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 202 transitions, 547 flow [2021-11-20 06:57:26,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:57:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:57:26,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2021-11-20 06:57:26,405 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2021-11-20 06:57:26,405 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2021-11-20 06:57:26,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2021-11-20 06:57:26,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:26,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2021-11-20 06:57:26,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:26,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:26,412 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:26,412 INFO L186 Difference]: Start difference. First operand has 202 places, 196 transitions, 484 flow. Second operand 3 states and 591 transitions. [2021-11-20 06:57:26,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 202 transitions, 547 flow [2021-11-20 06:57:26,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 202 transitions, 544 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-20 06:57:26,424 INFO L242 Difference]: Finished difference. Result has 205 places, 199 transitions, 525 flow [2021-11-20 06:57:26,425 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=481, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=525, PETRI_PLACES=205, PETRI_TRANSITIONS=199} [2021-11-20 06:57:26,427 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 18 predicate places. [2021-11-20 06:57:26,427 INFO L470 AbstractCegarLoop]: Abstraction has has 205 places, 199 transitions, 525 flow [2021-11-20 06:57:26,428 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:26,428 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:26,428 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] [2021-11-20 06:57:26,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 06:57:26,429 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:26,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:26,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1292846572, now seen corresponding path program 1 times [2021-11-20 06:57:26,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:26,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508719059] [2021-11-20 06:57:26,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:26,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:26,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:26,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:26,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508719059] [2021-11-20 06:57:26,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508719059] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:26,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:26,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:26,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98280863] [2021-11-20 06:57:26,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:26,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:26,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:26,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:26,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:26,628 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:26,631 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 199 transitions, 525 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:26,632 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:26,632 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:26,632 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:27,147 INFO L129 PetriNetUnfolder]: 183/1076 cut-off events. [2021-11-20 06:57:27,147 INFO L130 PetriNetUnfolder]: For 871/888 co-relation queries the response was YES. [2021-11-20 06:57:27,153 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2203 conditions, 1076 events. 183/1076 cut-off events. For 871/888 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 7587 event pairs, 71 based on Foata normal form. 4/1016 useless extension candidates. Maximal degree in co-relation 1596. Up to 182 conditions per place. [2021-11-20 06:57:27,159 INFO L132 encePairwiseOnDemand]: 195/210 looper letters, 71 selfloop transitions, 22 changer transitions 34/291 dead transitions. [2021-11-20 06:57:27,159 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 291 transitions, 1158 flow [2021-11-20 06:57:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:57:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-20 06:57:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2794 transitions. [2021-11-20 06:57:27,169 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8315476190476191 [2021-11-20 06:57:27,169 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2794 transitions. [2021-11-20 06:57:27,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2794 transitions. [2021-11-20 06:57:27,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:27,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2794 transitions. [2021-11-20 06:57:27,181 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 174.625) internal successors, (2794), 16 states have internal predecessors, (2794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:27,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:27,193 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:27,193 INFO L186 Difference]: Start difference. First operand has 205 places, 199 transitions, 525 flow. Second operand 16 states and 2794 transitions. [2021-11-20 06:57:27,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 291 transitions, 1158 flow [2021-11-20 06:57:27,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 291 transitions, 1142 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-11-20 06:57:27,208 INFO L242 Difference]: Finished difference. Result has 230 places, 219 transitions, 740 flow [2021-11-20 06:57:27,209 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=740, PETRI_PLACES=230, PETRI_TRANSITIONS=219} [2021-11-20 06:57:27,210 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 43 predicate places. [2021-11-20 06:57:27,210 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 219 transitions, 740 flow [2021-11-20 06:57:27,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:27,211 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:27,211 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] [2021-11-20 06:57:27,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 06:57:27,212 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:27,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:27,213 INFO L85 PathProgramCache]: Analyzing trace with hash 2125139934, now seen corresponding path program 1 times [2021-11-20 06:57:27,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:27,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889832793] [2021-11-20 06:57:27,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:27,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:27,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:27,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:27,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:27,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889832793] [2021-11-20 06:57:27,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889832793] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:27,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:27,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:27,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874174176] [2021-11-20 06:57:27,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:27,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:27,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:27,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:27,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:27,398 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:27,401 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 219 transitions, 740 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:27,401 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:27,401 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:27,401 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:28,055 INFO L129 PetriNetUnfolder]: 222/1254 cut-off events. [2021-11-20 06:57:28,055 INFO L130 PetriNetUnfolder]: For 2358/2378 co-relation queries the response was YES. [2021-11-20 06:57:28,066 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3183 conditions, 1254 events. 222/1254 cut-off events. For 2358/2378 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 9582 event pairs, 116 based on Foata normal form. 10/1198 useless extension candidates. Maximal degree in co-relation 3128. Up to 386 conditions per place. [2021-11-20 06:57:28,076 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 97 selfloop transitions, 6 changer transitions 34/304 dead transitions. [2021-11-20 06:57:28,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 304 transitions, 1520 flow [2021-11-20 06:57:28,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 06:57:28,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 06:57:28,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4125 transitions. [2021-11-20 06:57:28,093 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8184523809523809 [2021-11-20 06:57:28,094 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4125 transitions. [2021-11-20 06:57:28,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4125 transitions. [2021-11-20 06:57:28,098 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:28,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4125 transitions. [2021-11-20 06:57:28,114 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.875) internal successors, (4125), 24 states have internal predecessors, (4125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:28,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:28,136 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:28,136 INFO L186 Difference]: Start difference. First operand has 230 places, 219 transitions, 740 flow. Second operand 24 states and 4125 transitions. [2021-11-20 06:57:28,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 304 transitions, 1520 flow [2021-11-20 06:57:28,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 304 transitions, 1396 flow, removed 62 selfloop flow, removed 5 redundant places. [2021-11-20 06:57:28,165 INFO L242 Difference]: Finished difference. Result has 264 places, 224 transitions, 802 flow [2021-11-20 06:57:28,166 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=802, PETRI_PLACES=264, PETRI_TRANSITIONS=224} [2021-11-20 06:57:28,170 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 77 predicate places. [2021-11-20 06:57:28,170 INFO L470 AbstractCegarLoop]: Abstraction has has 264 places, 224 transitions, 802 flow [2021-11-20 06:57:28,172 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:28,172 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:28,172 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] [2021-11-20 06:57:28,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 06:57:28,173 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:28,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:28,174 INFO L85 PathProgramCache]: Analyzing trace with hash 775183112, now seen corresponding path program 2 times [2021-11-20 06:57:28,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:28,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294453211] [2021-11-20 06:57:28,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:28,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:28,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:28,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:28,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:28,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294453211] [2021-11-20 06:57:28,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294453211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:28,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:28,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:28,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247168879] [2021-11-20 06:57:28,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:28,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:28,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:28,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:28,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:28,487 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:28,490 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 224 transitions, 802 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:28,491 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:28,491 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:28,491 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:29,170 INFO L129 PetriNetUnfolder]: 261/1359 cut-off events. [2021-11-20 06:57:29,171 INFO L130 PetriNetUnfolder]: For 5669/5690 co-relation queries the response was YES. [2021-11-20 06:57:29,187 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4405 conditions, 1359 events. 261/1359 cut-off events. For 5669/5690 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10659 event pairs, 135 based on Foata normal form. 10/1291 useless extension candidates. Maximal degree in co-relation 4212. Up to 458 conditions per place. [2021-11-20 06:57:29,197 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 86 selfloop transitions, 14 changer transitions 21/288 dead transitions. [2021-11-20 06:57:29,197 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 288 transitions, 1683 flow [2021-11-20 06:57:29,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:57:29,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-20 06:57:29,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2755 transitions. [2021-11-20 06:57:29,208 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8199404761904762 [2021-11-20 06:57:29,208 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2755 transitions. [2021-11-20 06:57:29,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2755 transitions. [2021-11-20 06:57:29,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:29,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2755 transitions. [2021-11-20 06:57:29,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.1875) internal successors, (2755), 16 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:29,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:29,238 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:29,238 INFO L186 Difference]: Start difference. First operand has 264 places, 224 transitions, 802 flow. Second operand 16 states and 2755 transitions. [2021-11-20 06:57:29,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 288 transitions, 1683 flow [2021-11-20 06:57:29,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 288 transitions, 1578 flow, removed 51 selfloop flow, removed 11 redundant places. [2021-11-20 06:57:29,278 INFO L242 Difference]: Finished difference. Result has 264 places, 237 transitions, 1021 flow [2021-11-20 06:57:29,278 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=777, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1021, PETRI_PLACES=264, PETRI_TRANSITIONS=237} [2021-11-20 06:57:29,281 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 77 predicate places. [2021-11-20 06:57:29,281 INFO L470 AbstractCegarLoop]: Abstraction has has 264 places, 237 transitions, 1021 flow [2021-11-20 06:57:29,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:29,283 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:29,283 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:57:29,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 06:57:29,284 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:29,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:29,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1804324208, now seen corresponding path program 3 times [2021-11-20 06:57:29,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:29,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219267054] [2021-11-20 06:57:29,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:29,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:29,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:29,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:29,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219267054] [2021-11-20 06:57:29,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219267054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:29,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:29,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:29,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798987339] [2021-11-20 06:57:29,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:29,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:29,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:29,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:29,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:29,518 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:29,520 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 264 places, 237 transitions, 1021 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:29,520 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:29,520 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:29,520 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:30,057 INFO L129 PetriNetUnfolder]: 269/1423 cut-off events. [2021-11-20 06:57:30,057 INFO L130 PetriNetUnfolder]: For 6076/6100 co-relation queries the response was YES. [2021-11-20 06:57:30,072 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4717 conditions, 1423 events. 269/1423 cut-off events. For 6076/6100 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11245 event pairs, 144 based on Foata normal form. 11/1355 useless extension candidates. Maximal degree in co-relation 4521. Up to 482 conditions per place. [2021-11-20 06:57:30,082 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 83 selfloop transitions, 18 changer transitions 19/287 dead transitions. [2021-11-20 06:57:30,082 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 287 transitions, 1876 flow [2021-11-20 06:57:30,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:57:30,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-20 06:57:30,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2752 transitions. [2021-11-20 06:57:30,092 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2021-11-20 06:57:30,092 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2752 transitions. [2021-11-20 06:57:30,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2752 transitions. [2021-11-20 06:57:30,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:30,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2752 transitions. [2021-11-20 06:57:30,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.0) internal successors, (2752), 16 states have internal predecessors, (2752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:30,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:30,113 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:30,113 INFO L186 Difference]: Start difference. First operand has 264 places, 237 transitions, 1021 flow. Second operand 16 states and 2752 transitions. [2021-11-20 06:57:30,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 287 transitions, 1876 flow [2021-11-20 06:57:30,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 265 places, 287 transitions, 1666 flow, removed 104 selfloop flow, removed 7 redundant places. [2021-11-20 06:57:30,147 INFO L242 Difference]: Finished difference. Result has 276 places, 247 transitions, 1116 flow [2021-11-20 06:57:30,148 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=915, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1116, PETRI_PLACES=276, PETRI_TRANSITIONS=247} [2021-11-20 06:57:30,148 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 89 predicate places. [2021-11-20 06:57:30,148 INFO L470 AbstractCegarLoop]: Abstraction has has 276 places, 247 transitions, 1116 flow [2021-11-20 06:57:30,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:30,150 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:30,150 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] [2021-11-20 06:57:30,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 06:57:30,150 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:30,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:30,151 INFO L85 PathProgramCache]: Analyzing trace with hash -349658560, now seen corresponding path program 4 times [2021-11-20 06:57:30,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:30,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089257492] [2021-11-20 06:57:30,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:30,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:30,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:30,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:30,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089257492] [2021-11-20 06:57:30,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089257492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:30,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:30,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:30,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267216318] [2021-11-20 06:57:30,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:30,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:30,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:30,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:30,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:30,368 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:30,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 247 transitions, 1116 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:30,370 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:30,370 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:30,370 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:31,006 INFO L129 PetriNetUnfolder]: 287/1432 cut-off events. [2021-11-20 06:57:31,006 INFO L130 PetriNetUnfolder]: For 6216/6237 co-relation queries the response was YES. [2021-11-20 06:57:31,023 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4976 conditions, 1432 events. 287/1432 cut-off events. For 6216/6237 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11293 event pairs, 148 based on Foata normal form. 10/1359 useless extension candidates. Maximal degree in co-relation 4775. Up to 467 conditions per place. [2021-11-20 06:57:31,034 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 98 selfloop transitions, 20 changer transitions 28/313 dead transitions. [2021-11-20 06:57:31,034 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 313 transitions, 2185 flow [2021-11-20 06:57:31,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 06:57:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 06:57:31,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3434 transitions. [2021-11-20 06:57:31,041 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8176190476190476 [2021-11-20 06:57:31,041 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3434 transitions. [2021-11-20 06:57:31,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3434 transitions. [2021-11-20 06:57:31,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:31,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3434 transitions. [2021-11-20 06:57:31,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.7) internal successors, (3434), 20 states have internal predecessors, (3434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:31,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:31,059 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:31,059 INFO L186 Difference]: Start difference. First operand has 276 places, 247 transitions, 1116 flow. Second operand 20 states and 3434 transitions. [2021-11-20 06:57:31,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 313 transitions, 2185 flow [2021-11-20 06:57:31,098 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 313 transitions, 2034 flow, removed 55 selfloop flow, removed 8 redundant places. [2021-11-20 06:57:31,104 INFO L242 Difference]: Finished difference. Result has 297 places, 258 transitions, 1270 flow [2021-11-20 06:57:31,105 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1027, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1270, PETRI_PLACES=297, PETRI_TRANSITIONS=258} [2021-11-20 06:57:31,107 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 110 predicate places. [2021-11-20 06:57:31,108 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 258 transitions, 1270 flow [2021-11-20 06:57:31,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:31,109 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:31,109 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] [2021-11-20 06:57:31,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 06:57:31,109 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:31,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:31,110 INFO L85 PathProgramCache]: Analyzing trace with hash 1507777860, now seen corresponding path program 5 times [2021-11-20 06:57:31,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:31,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758286910] [2021-11-20 06:57:31,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:31,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:31,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:31,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:31,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:31,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758286910] [2021-11-20 06:57:31,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758286910] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:31,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:31,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:31,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211475816] [2021-11-20 06:57:31,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:31,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:31,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:31,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:31,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:31,290 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:31,295 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 258 transitions, 1270 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:31,296 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:31,296 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:31,296 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:32,019 INFO L129 PetriNetUnfolder]: 293/1617 cut-off events. [2021-11-20 06:57:32,020 INFO L130 PetriNetUnfolder]: For 8850/8872 co-relation queries the response was YES. [2021-11-20 06:57:32,043 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5742 conditions, 1617 events. 293/1617 cut-off events. For 8850/8872 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 13304 event pairs, 144 based on Foata normal form. 10/1547 useless extension candidates. Maximal degree in co-relation 5478. Up to 445 conditions per place. [2021-11-20 06:57:32,055 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 144 selfloop transitions, 21 changer transitions 35/367 dead transitions. [2021-11-20 06:57:32,055 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 367 transitions, 2846 flow [2021-11-20 06:57:32,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 06:57:32,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 06:57:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4122 transitions. [2021-11-20 06:57:32,114 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8178571428571428 [2021-11-20 06:57:32,114 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4122 transitions. [2021-11-20 06:57:32,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4122 transitions. [2021-11-20 06:57:32,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:32,118 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4122 transitions. [2021-11-20 06:57:32,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.75) internal successors, (4122), 24 states have internal predecessors, (4122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:32,138 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:32,140 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:32,141 INFO L186 Difference]: Start difference. First operand has 297 places, 258 transitions, 1270 flow. Second operand 24 states and 4122 transitions. [2021-11-20 06:57:32,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 367 transitions, 2846 flow [2021-11-20 06:57:32,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 367 transitions, 2614 flow, removed 109 selfloop flow, removed 11 redundant places. [2021-11-20 06:57:32,198 INFO L242 Difference]: Finished difference. Result has 316 places, 260 transitions, 1334 flow [2021-11-20 06:57:32,199 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1191, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=1334, PETRI_PLACES=316, PETRI_TRANSITIONS=260} [2021-11-20 06:57:32,200 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 129 predicate places. [2021-11-20 06:57:32,200 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 260 transitions, 1334 flow [2021-11-20 06:57:32,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:32,201 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:32,201 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] [2021-11-20 06:57:32,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 06:57:32,202 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:32,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:32,202 INFO L85 PathProgramCache]: Analyzing trace with hash 387915680, now seen corresponding path program 6 times [2021-11-20 06:57:32,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:32,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288058280] [2021-11-20 06:57:32,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:32,203 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:32,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:32,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288058280] [2021-11-20 06:57:32,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288058280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:32,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:32,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:32,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801089242] [2021-11-20 06:57:32,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:32,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:32,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:32,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:32,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:32,351 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:32,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 260 transitions, 1334 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:32,354 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:32,354 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:32,354 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:33,092 INFO L129 PetriNetUnfolder]: 294/1664 cut-off events. [2021-11-20 06:57:33,092 INFO L130 PetriNetUnfolder]: For 8996/9021 co-relation queries the response was YES. [2021-11-20 06:57:33,115 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5911 conditions, 1664 events. 294/1664 cut-off events. For 8996/9021 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 13857 event pairs, 155 based on Foata normal form. 13/1595 useless extension candidates. Maximal degree in co-relation 5806. Up to 535 conditions per place. [2021-11-20 06:57:33,127 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 102 selfloop transitions, 22 changer transitions 29/320 dead transitions. [2021-11-20 06:57:33,127 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 320 transitions, 2450 flow [2021-11-20 06:57:33,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 06:57:33,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 06:57:33,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3767 transitions. [2021-11-20 06:57:33,136 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8153679653679654 [2021-11-20 06:57:33,136 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3767 transitions. [2021-11-20 06:57:33,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3767 transitions. [2021-11-20 06:57:33,138 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:33,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3767 transitions. [2021-11-20 06:57:33,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.22727272727272) internal successors, (3767), 22 states have internal predecessors, (3767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:33,155 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:33,158 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:33,158 INFO L186 Difference]: Start difference. First operand has 316 places, 260 transitions, 1334 flow. Second operand 22 states and 3767 transitions. [2021-11-20 06:57:33,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 320 places, 320 transitions, 2450 flow [2021-11-20 06:57:33,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 320 transitions, 2333 flow, removed 38 selfloop flow, removed 17 redundant places. [2021-11-20 06:57:33,218 INFO L242 Difference]: Finished difference. Result has 318 places, 263 transitions, 1417 flow [2021-11-20 06:57:33,219 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1276, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=240, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1417, PETRI_PLACES=318, PETRI_TRANSITIONS=263} [2021-11-20 06:57:33,220 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 131 predicate places. [2021-11-20 06:57:33,220 INFO L470 AbstractCegarLoop]: Abstraction has has 318 places, 263 transitions, 1417 flow [2021-11-20 06:57:33,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:33,221 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:33,222 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] [2021-11-20 06:57:33,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 06:57:33,222 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:33,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:33,223 INFO L85 PathProgramCache]: Analyzing trace with hash 1107549490, now seen corresponding path program 7 times [2021-11-20 06:57:33,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:33,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200274064] [2021-11-20 06:57:33,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:33,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:33,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:33,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:33,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200274064] [2021-11-20 06:57:33,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200274064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:33,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:33,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:33,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183153580] [2021-11-20 06:57:33,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:33,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:33,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:33,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:33,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:33,373 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:33,375 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 263 transitions, 1417 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:33,375 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:33,375 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:33,375 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:34,127 INFO L129 PetriNetUnfolder]: 291/1670 cut-off events. [2021-11-20 06:57:34,128 INFO L130 PetriNetUnfolder]: For 10473/10498 co-relation queries the response was YES. [2021-11-20 06:57:34,147 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6031 conditions, 1670 events. 291/1670 cut-off events. For 10473/10498 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 14018 event pairs, 159 based on Foata normal form. 11/1601 useless extension candidates. Maximal degree in co-relation 5905. Up to 532 conditions per place. [2021-11-20 06:57:34,160 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 110 selfloop transitions, 21 changer transitions 28/326 dead transitions. [2021-11-20 06:57:34,161 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 326 transitions, 2815 flow [2021-11-20 06:57:34,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:57:34,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 06:57:34,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3604 transitions. [2021-11-20 06:57:34,170 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8172335600907029 [2021-11-20 06:57:34,170 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3604 transitions. [2021-11-20 06:57:34,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3604 transitions. [2021-11-20 06:57:34,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:34,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3604 transitions. [2021-11-20 06:57:34,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.61904761904762) internal successors, (3604), 21 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:34,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:34,189 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:34,190 INFO L186 Difference]: Start difference. First operand has 318 places, 263 transitions, 1417 flow. Second operand 21 states and 3604 transitions. [2021-11-20 06:57:34,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 326 transitions, 2815 flow [2021-11-20 06:57:34,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 326 transitions, 2616 flow, removed 86 selfloop flow, removed 13 redundant places. [2021-11-20 06:57:34,257 INFO L242 Difference]: Finished difference. Result has 327 places, 274 transitions, 1664 flow [2021-11-20 06:57:34,258 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1664, PETRI_PLACES=327, PETRI_TRANSITIONS=274} [2021-11-20 06:57:34,258 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 140 predicate places. [2021-11-20 06:57:34,259 INFO L470 AbstractCegarLoop]: Abstraction has has 327 places, 274 transitions, 1664 flow [2021-11-20 06:57:34,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:34,260 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:34,260 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] [2021-11-20 06:57:34,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 06:57:34,260 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:34,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:34,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1398594880, now seen corresponding path program 8 times [2021-11-20 06:57:34,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:34,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450895894] [2021-11-20 06:57:34,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:34,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:34,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:34,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:34,441 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:34,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450895894] [2021-11-20 06:57:34,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450895894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:34,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:34,442 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:34,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122387628] [2021-11-20 06:57:34,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:34,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:34,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:34,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:34,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:34,446 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:34,449 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 274 transitions, 1664 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:34,449 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:34,449 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:34,449 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:35,251 INFO L129 PetriNetUnfolder]: 293/1754 cut-off events. [2021-11-20 06:57:35,252 INFO L130 PetriNetUnfolder]: For 11890/11922 co-relation queries the response was YES. [2021-11-20 06:57:35,274 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6355 conditions, 1754 events. 293/1754 cut-off events. For 11890/11922 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 15043 event pairs, 170 based on Foata normal form. 11/1682 useless extension candidates. Maximal degree in co-relation 6077. Up to 545 conditions per place. [2021-11-20 06:57:35,288 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 104 selfloop transitions, 27 changer transitions 30/328 dead transitions. [2021-11-20 06:57:35,288 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 328 transitions, 2945 flow [2021-11-20 06:57:35,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 06:57:35,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 06:57:35,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3430 transitions. [2021-11-20 06:57:35,295 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2021-11-20 06:57:35,295 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3430 transitions. [2021-11-20 06:57:35,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3430 transitions. [2021-11-20 06:57:35,299 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:35,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3430 transitions. [2021-11-20 06:57:35,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.5) internal successors, (3430), 20 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:35,313 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:35,316 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:35,316 INFO L186 Difference]: Start difference. First operand has 327 places, 274 transitions, 1664 flow. Second operand 20 states and 3430 transitions. [2021-11-20 06:57:35,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 328 transitions, 2945 flow [2021-11-20 06:57:35,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 328 transitions, 2685 flow, removed 130 selfloop flow, removed 10 redundant places. [2021-11-20 06:57:35,383 INFO L242 Difference]: Finished difference. Result has 338 places, 282 transitions, 1831 flow [2021-11-20 06:57:35,384 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=304, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1831, PETRI_PLACES=338, PETRI_TRANSITIONS=282} [2021-11-20 06:57:35,385 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 151 predicate places. [2021-11-20 06:57:35,385 INFO L470 AbstractCegarLoop]: Abstraction has has 338 places, 282 transitions, 1831 flow [2021-11-20 06:57:35,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:35,386 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:35,387 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] [2021-11-20 06:57:35,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 06:57:35,387 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:35,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:35,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1686960774, now seen corresponding path program 9 times [2021-11-20 06:57:35,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:35,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585144047] [2021-11-20 06:57:35,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:35,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:35,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:35,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:35,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585144047] [2021-11-20 06:57:35,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585144047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:35,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:35,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:35,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734694330] [2021-11-20 06:57:35,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:35,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:35,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:35,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:35,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:35,590 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:35,591 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 282 transitions, 1831 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:35,592 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:35,592 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:35,592 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:36,288 INFO L129 PetriNetUnfolder]: 278/1684 cut-off events. [2021-11-20 06:57:36,288 INFO L130 PetriNetUnfolder]: For 10474/10509 co-relation queries the response was YES. [2021-11-20 06:57:36,309 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5957 conditions, 1684 events. 278/1684 cut-off events. For 10474/10509 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 14254 event pairs, 154 based on Foata normal form. 18/1623 useless extension candidates. Maximal degree in co-relation 5848. Up to 530 conditions per place. [2021-11-20 06:57:36,317 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 105 selfloop transitions, 18 changer transitions 29/319 dead transitions. [2021-11-20 06:57:36,317 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 319 transitions, 2681 flow [2021-11-20 06:57:36,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:57:36,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 06:57:36,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3083 transitions. [2021-11-20 06:57:36,323 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8156084656084656 [2021-11-20 06:57:36,324 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3083 transitions. [2021-11-20 06:57:36,324 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3083 transitions. [2021-11-20 06:57:36,325 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:36,326 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3083 transitions. [2021-11-20 06:57:36,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.27777777777777) internal successors, (3083), 18 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:36,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:36,340 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:36,341 INFO L186 Difference]: Start difference. First operand has 338 places, 282 transitions, 1831 flow. Second operand 18 states and 3083 transitions. [2021-11-20 06:57:36,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 319 transitions, 2681 flow [2021-11-20 06:57:36,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 319 transitions, 2465 flow, removed 83 selfloop flow, removed 16 redundant places. [2021-11-20 06:57:36,412 INFO L242 Difference]: Finished difference. Result has 334 places, 267 transitions, 1528 flow [2021-11-20 06:57:36,412 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1696, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=264, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1528, PETRI_PLACES=334, PETRI_TRANSITIONS=267} [2021-11-20 06:57:36,414 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 147 predicate places. [2021-11-20 06:57:36,414 INFO L470 AbstractCegarLoop]: Abstraction has has 334 places, 267 transitions, 1528 flow [2021-11-20 06:57:36,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:36,415 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:36,415 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] [2021-11-20 06:57:36,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-20 06:57:36,416 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:36,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:36,416 INFO L85 PathProgramCache]: Analyzing trace with hash -2069576426, now seen corresponding path program 10 times [2021-11-20 06:57:36,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:36,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925279231] [2021-11-20 06:57:36,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:36,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:36,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:36,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925279231] [2021-11-20 06:57:36,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925279231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:36,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:36,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:36,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157005994] [2021-11-20 06:57:36,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:36,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:36,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:36,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:36,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:36,608 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:36,611 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 267 transitions, 1528 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:36,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:36,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:36,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:37,267 INFO L129 PetriNetUnfolder]: 283/1696 cut-off events. [2021-11-20 06:57:37,268 INFO L130 PetriNetUnfolder]: For 9773/9799 co-relation queries the response was YES. [2021-11-20 06:57:37,295 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5924 conditions, 1696 events. 283/1696 cut-off events. For 9773/9799 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 14391 event pairs, 167 based on Foata normal form. 11/1626 useless extension candidates. Maximal degree in co-relation 5844. Up to 533 conditions per place. [2021-11-20 06:57:37,305 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 98 selfloop transitions, 24 changer transitions 24/313 dead transitions. [2021-11-20 06:57:37,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 313 transitions, 2506 flow [2021-11-20 06:57:37,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:57:37,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-20 06:57:37,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2924 transitions. [2021-11-20 06:57:37,314 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2021-11-20 06:57:37,314 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2924 transitions. [2021-11-20 06:57:37,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2924 transitions. [2021-11-20 06:57:37,316 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:37,316 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2924 transitions. [2021-11-20 06:57:37,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 172.0) internal successors, (2924), 17 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:37,386 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:37,387 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:37,387 INFO L186 Difference]: Start difference. First operand has 334 places, 267 transitions, 1528 flow. Second operand 17 states and 2924 transitions. [2021-11-20 06:57:37,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 327 places, 313 transitions, 2506 flow [2021-11-20 06:57:37,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 313 transitions, 2309 flow, removed 48 selfloop flow, removed 17 redundant places. [2021-11-20 06:57:37,445 INFO L242 Difference]: Finished difference. Result has 320 places, 275 transitions, 1651 flow [2021-11-20 06:57:37,446 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1651, PETRI_PLACES=320, PETRI_TRANSITIONS=275} [2021-11-20 06:57:37,447 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 133 predicate places. [2021-11-20 06:57:37,447 INFO L470 AbstractCegarLoop]: Abstraction has has 320 places, 275 transitions, 1651 flow [2021-11-20 06:57:37,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:37,448 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:37,449 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] [2021-11-20 06:57:37,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-20 06:57:37,449 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:37,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash 245186016, now seen corresponding path program 11 times [2021-11-20 06:57:37,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:37,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454370047] [2021-11-20 06:57:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:37,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:37,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:37,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:37,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:37,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454370047] [2021-11-20 06:57:37,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454370047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:37,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:37,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:37,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880087918] [2021-11-20 06:57:37,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:37,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:37,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:37,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:37,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:37,591 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:37,593 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 275 transitions, 1651 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:37,594 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:37,594 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:37,594 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:38,246 INFO L129 PetriNetUnfolder]: 280/1637 cut-off events. [2021-11-20 06:57:38,246 INFO L130 PetriNetUnfolder]: For 8652/8679 co-relation queries the response was YES. [2021-11-20 06:57:38,272 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5770 conditions, 1637 events. 280/1637 cut-off events. For 8652/8679 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 13654 event pairs, 162 based on Foata normal form. 13/1570 useless extension candidates. Maximal degree in co-relation 5692. Up to 537 conditions per place. [2021-11-20 06:57:38,280 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 99 selfloop transitions, 27 changer transitions 24/317 dead transitions. [2021-11-20 06:57:38,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 317 transitions, 2573 flow [2021-11-20 06:57:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:57:38,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-20 06:57:38,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2922 transitions. [2021-11-20 06:57:38,295 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8184873949579832 [2021-11-20 06:57:38,295 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2922 transitions. [2021-11-20 06:57:38,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2922 transitions. [2021-11-20 06:57:38,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:38,299 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2922 transitions. [2021-11-20 06:57:38,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.88235294117646) internal successors, (2922), 17 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:38,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:38,318 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:38,318 INFO L186 Difference]: Start difference. First operand has 320 places, 275 transitions, 1651 flow. Second operand 17 states and 2922 transitions. [2021-11-20 06:57:38,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 317 transitions, 2573 flow [2021-11-20 06:57:38,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 317 transitions, 2449 flow, removed 36 selfloop flow, removed 10 redundant places. [2021-11-20 06:57:38,373 INFO L242 Difference]: Finished difference. Result has 328 places, 283 transitions, 1803 flow [2021-11-20 06:57:38,375 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1566, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1803, PETRI_PLACES=328, PETRI_TRANSITIONS=283} [2021-11-20 06:57:38,375 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 141 predicate places. [2021-11-20 06:57:38,375 INFO L470 AbstractCegarLoop]: Abstraction has has 328 places, 283 transitions, 1803 flow [2021-11-20 06:57:38,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:38,376 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:38,376 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] [2021-11-20 06:57:38,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-20 06:57:38,377 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:38,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:38,377 INFO L85 PathProgramCache]: Analyzing trace with hash -182647018, now seen corresponding path program 12 times [2021-11-20 06:57:38,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:38,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003714265] [2021-11-20 06:57:38,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:38,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:38,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:38,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:38,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:38,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003714265] [2021-11-20 06:57:38,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003714265] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:38,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:38,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:38,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996183157] [2021-11-20 06:57:38,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:38,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:38,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:38,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:38,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:38,513 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:38,515 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 283 transitions, 1803 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:38,515 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:38,515 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:38,515 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:39,168 INFO L129 PetriNetUnfolder]: 271/1613 cut-off events. [2021-11-20 06:57:39,168 INFO L130 PetriNetUnfolder]: For 8004/8031 co-relation queries the response was YES. [2021-11-20 06:57:39,185 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5554 conditions, 1613 events. 271/1613 cut-off events. For 8004/8031 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13427 event pairs, 160 based on Foata normal form. 13/1542 useless extension candidates. Maximal degree in co-relation 5473. Up to 532 conditions per place. [2021-11-20 06:57:39,196 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 96 selfloop transitions, 16 changer transitions 28/307 dead transitions. [2021-11-20 06:57:39,196 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 307 transitions, 2378 flow [2021-11-20 06:57:39,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:57:39,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 06:57:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3085 transitions. [2021-11-20 06:57:39,204 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8161375661375662 [2021-11-20 06:57:39,204 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3085 transitions. [2021-11-20 06:57:39,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3085 transitions. [2021-11-20 06:57:39,206 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:39,206 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3085 transitions. [2021-11-20 06:57:39,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.38888888888889) internal successors, (3085), 18 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) [2021-11-20 06:57:39,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:39,219 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:39,219 INFO L186 Difference]: Start difference. First operand has 328 places, 283 transitions, 1803 flow. Second operand 18 states and 3085 transitions. [2021-11-20 06:57:39,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 307 transitions, 2378 flow [2021-11-20 06:57:39,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 307 transitions, 2272 flow, removed 37 selfloop flow, removed 8 redundant places. [2021-11-20 06:57:39,280 INFO L242 Difference]: Finished difference. Result has 334 places, 269 transitions, 1532 flow [2021-11-20 06:57:39,281 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1714, PETRI_DIFFERENCE_MINUEND_PLACES=312, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1532, PETRI_PLACES=334, PETRI_TRANSITIONS=269} [2021-11-20 06:57:39,281 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 147 predicate places. [2021-11-20 06:57:39,281 INFO L470 AbstractCegarLoop]: Abstraction has has 334 places, 269 transitions, 1532 flow [2021-11-20 06:57:39,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:39,282 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:39,282 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] [2021-11-20 06:57:39,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-20 06:57:39,282 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:39,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:39,283 INFO L85 PathProgramCache]: Analyzing trace with hash -908374218, now seen corresponding path program 13 times [2021-11-20 06:57:39,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:39,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18183992] [2021-11-20 06:57:39,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:39,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:39,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:39,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:39,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:39,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18183992] [2021-11-20 06:57:39,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18183992] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:39,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:39,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:39,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443333984] [2021-11-20 06:57:39,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:39,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:39,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:39,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:39,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:39,442 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:39,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 269 transitions, 1532 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:39,444 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:39,444 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:39,444 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:40,035 INFO L129 PetriNetUnfolder]: 257/1543 cut-off events. [2021-11-20 06:57:40,036 INFO L130 PetriNetUnfolder]: For 7424/7451 co-relation queries the response was YES. [2021-11-20 06:57:40,060 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5176 conditions, 1543 events. 257/1543 cut-off events. For 7424/7451 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 12656 event pairs, 156 based on Foata normal form. 13/1476 useless extension candidates. Maximal degree in co-relation 5096. Up to 518 conditions per place. [2021-11-20 06:57:40,069 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 87 selfloop transitions, 6 changer transitions 29/289 dead transitions. [2021-11-20 06:57:40,069 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 289 transitions, 1988 flow [2021-11-20 06:57:40,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:57:40,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 06:57:40,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3078 transitions. [2021-11-20 06:57:40,076 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8142857142857143 [2021-11-20 06:57:40,077 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3078 transitions. [2021-11-20 06:57:40,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3078 transitions. [2021-11-20 06:57:40,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:40,079 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3078 transitions. [2021-11-20 06:57:40,086 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.0) internal successors, (3078), 18 states have internal predecessors, (3078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:40,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:40,095 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:40,095 INFO L186 Difference]: Start difference. First operand has 334 places, 269 transitions, 1532 flow. Second operand 18 states and 3078 transitions. [2021-11-20 06:57:40,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 289 transitions, 1988 flow [2021-11-20 06:57:40,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 289 transitions, 1888 flow, removed 21 selfloop flow, removed 18 redundant places. [2021-11-20 06:57:40,149 INFO L242 Difference]: Finished difference. Result has 321 places, 250 transitions, 1214 flow [2021-11-20 06:57:40,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1214, PETRI_PLACES=321, PETRI_TRANSITIONS=250} [2021-11-20 06:57:40,151 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 134 predicate places. [2021-11-20 06:57:40,151 INFO L470 AbstractCegarLoop]: Abstraction has has 321 places, 250 transitions, 1214 flow [2021-11-20 06:57:40,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:40,151 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:40,152 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] [2021-11-20 06:57:40,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-20 06:57:40,152 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:40,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:40,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1787217204, now seen corresponding path program 14 times [2021-11-20 06:57:40,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:40,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738273469] [2021-11-20 06:57:40,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:40,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:40,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:40,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738273469] [2021-11-20 06:57:40,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738273469] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:40,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:40,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:40,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24841897] [2021-11-20 06:57:40,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:40,306 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:40,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:40,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:40,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:40,310 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:40,312 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 250 transitions, 1214 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:40,312 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:40,312 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:40,312 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:40,978 INFO L129 PetriNetUnfolder]: 264/1579 cut-off events. [2021-11-20 06:57:40,979 INFO L130 PetriNetUnfolder]: For 7240/7266 co-relation queries the response was YES. [2021-11-20 06:57:40,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5251 conditions, 1579 events. 264/1579 cut-off events. For 7240/7266 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 13109 event pairs, 153 based on Foata normal form. 11/1512 useless extension candidates. Maximal degree in co-relation 5178. Up to 505 conditions per place. [2021-11-20 06:57:41,006 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 89 selfloop transitions, 21 changer transitions 30/307 dead transitions. [2021-11-20 06:57:41,006 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 307 transitions, 2118 flow [2021-11-20 06:57:41,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 06:57:41,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 06:57:41,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3765 transitions. [2021-11-20 06:57:41,013 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.814935064935065 [2021-11-20 06:57:41,014 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3765 transitions. [2021-11-20 06:57:41,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3765 transitions. [2021-11-20 06:57:41,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:41,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3765 transitions. [2021-11-20 06:57:41,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.13636363636363) internal successors, (3765), 22 states have internal predecessors, (3765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:41,030 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:41,032 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:41,032 INFO L186 Difference]: Start difference. First operand has 321 places, 250 transitions, 1214 flow. Second operand 22 states and 3765 transitions. [2021-11-20 06:57:41,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 307 transitions, 2118 flow [2021-11-20 06:57:41,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 296 places, 307 transitions, 2006 flow, removed 24 selfloop flow, removed 17 redundant places. [2021-11-20 06:57:41,079 INFO L242 Difference]: Finished difference. Result has 311 places, 255 transitions, 1302 flow [2021-11-20 06:57:41,079 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1152, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1302, PETRI_PLACES=311, PETRI_TRANSITIONS=255} [2021-11-20 06:57:41,080 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 124 predicate places. [2021-11-20 06:57:41,080 INFO L470 AbstractCegarLoop]: Abstraction has has 311 places, 255 transitions, 1302 flow [2021-11-20 06:57:41,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:41,081 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:41,081 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] [2021-11-20 06:57:41,081 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-20 06:57:41,081 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:41,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:41,082 INFO L85 PathProgramCache]: Analyzing trace with hash -338997168, now seen corresponding path program 15 times [2021-11-20 06:57:41,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:41,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121130397] [2021-11-20 06:57:41,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:41,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:41,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:41,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:41,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:41,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121130397] [2021-11-20 06:57:41,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121130397] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:41,226 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:41,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:41,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071575458] [2021-11-20 06:57:41,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:41,227 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:41,227 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:41,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:41,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:41,230 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:41,232 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 311 places, 255 transitions, 1302 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:41,232 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:41,233 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:41,233 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:41,939 INFO L129 PetriNetUnfolder]: 260/1577 cut-off events. [2021-11-20 06:57:41,939 INFO L130 PetriNetUnfolder]: For 6776/6799 co-relation queries the response was YES. [2021-11-20 06:57:41,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5215 conditions, 1577 events. 260/1577 cut-off events. For 6776/6799 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 13135 event pairs, 151 based on Foata normal form. 10/1508 useless extension candidates. Maximal degree in co-relation 5140. Up to 500 conditions per place. [2021-11-20 06:57:41,967 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 88 selfloop transitions, 21 changer transitions 29/305 dead transitions. [2021-11-20 06:57:41,967 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 305 transitions, 2248 flow [2021-11-20 06:57:41,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:57:41,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 06:57:41,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3601 transitions. [2021-11-20 06:57:41,974 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8165532879818594 [2021-11-20 06:57:41,974 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3601 transitions. [2021-11-20 06:57:41,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3601 transitions. [2021-11-20 06:57:41,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:41,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3601 transitions. [2021-11-20 06:57:41,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.47619047619048) internal successors, (3601), 21 states have internal predecessors, (3601), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:41,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:41,991 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:41,991 INFO L186 Difference]: Start difference. First operand has 311 places, 255 transitions, 1302 flow. Second operand 21 states and 3601 transitions. [2021-11-20 06:57:41,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 305 transitions, 2248 flow [2021-11-20 06:57:42,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 305 transitions, 2126 flow, removed 42 selfloop flow, removed 14 redundant places. [2021-11-20 06:57:42,038 INFO L242 Difference]: Finished difference. Result has 319 places, 261 transitions, 1454 flow [2021-11-20 06:57:42,039 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1249, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1454, PETRI_PLACES=319, PETRI_TRANSITIONS=261} [2021-11-20 06:57:42,040 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 132 predicate places. [2021-11-20 06:57:42,040 INFO L470 AbstractCegarLoop]: Abstraction has has 319 places, 261 transitions, 1454 flow [2021-11-20 06:57:42,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:42,041 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:42,041 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] [2021-11-20 06:57:42,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-20 06:57:42,041 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:42,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:42,042 INFO L85 PathProgramCache]: Analyzing trace with hash -835643370, now seen corresponding path program 16 times [2021-11-20 06:57:42,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:42,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058315094] [2021-11-20 06:57:42,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:42,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:42,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:42,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:42,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058315094] [2021-11-20 06:57:42,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058315094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:42,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:42,188 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:42,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8923725] [2021-11-20 06:57:42,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:42,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:42,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:42,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:42,192 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:42,194 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 319 places, 261 transitions, 1454 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:42,194 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:42,194 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:42,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:42,791 INFO L129 PetriNetUnfolder]: 246/1481 cut-off events. [2021-11-20 06:57:42,791 INFO L130 PetriNetUnfolder]: For 6741/6764 co-relation queries the response was YES. [2021-11-20 06:57:42,812 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4973 conditions, 1481 events. 246/1481 cut-off events. For 6741/6764 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 11926 event pairs, 150 based on Foata normal form. 10/1413 useless extension candidates. Maximal degree in co-relation 4894. Up to 499 conditions per place. [2021-11-20 06:57:42,822 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 86 selfloop transitions, 10 changer transitions 29/292 dead transitions. [2021-11-20 06:57:42,822 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 292 transitions, 2003 flow [2021-11-20 06:57:42,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:57:42,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 06:57:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3083 transitions. [2021-11-20 06:57:42,830 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8156084656084656 [2021-11-20 06:57:42,830 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3083 transitions. [2021-11-20 06:57:42,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3083 transitions. [2021-11-20 06:57:42,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:42,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3083 transitions. [2021-11-20 06:57:42,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.27777777777777) internal successors, (3083), 18 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:42,854 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:42,855 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:42,856 INFO L186 Difference]: Start difference. First operand has 319 places, 261 transitions, 1454 flow. Second operand 18 states and 3083 transitions. [2021-11-20 06:57:42,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 292 transitions, 2003 flow [2021-11-20 06:57:42,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 292 transitions, 1882 flow, removed 44 selfloop flow, removed 15 redundant places. [2021-11-20 06:57:42,906 INFO L242 Difference]: Finished difference. Result has 315 places, 246 transitions, 1184 flow [2021-11-20 06:57:42,907 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1360, PETRI_DIFFERENCE_MINUEND_PLACES=291, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=251, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1184, PETRI_PLACES=315, PETRI_TRANSITIONS=246} [2021-11-20 06:57:42,908 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 128 predicate places. [2021-11-20 06:57:42,908 INFO L470 AbstractCegarLoop]: Abstraction has has 315 places, 246 transitions, 1184 flow [2021-11-20 06:57:42,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:42,908 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:42,909 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] [2021-11-20 06:57:42,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-20 06:57:42,909 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:42,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:42,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1237059744, now seen corresponding path program 17 times [2021-11-20 06:57:42,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:42,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544290977] [2021-11-20 06:57:42,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:42,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:42,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:43,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:43,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:43,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544290977] [2021-11-20 06:57:43,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544290977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:43,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:43,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:43,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302615521] [2021-11-20 06:57:43,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:43,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:43,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:43,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:43,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:43,052 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:43,054 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 315 places, 246 transitions, 1184 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:43,054 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:43,054 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:43,054 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:43,591 INFO L129 PetriNetUnfolder]: 251/1499 cut-off events. [2021-11-20 06:57:43,591 INFO L130 PetriNetUnfolder]: For 6465/6488 co-relation queries the response was YES. [2021-11-20 06:57:43,611 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5005 conditions, 1499 events. 251/1499 cut-off events. For 6465/6488 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 12133 event pairs, 151 based on Foata normal form. 10/1429 useless extension candidates. Maximal degree in co-relation 4932. Up to 502 conditions per place. [2021-11-20 06:57:43,619 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 77 selfloop transitions, 20 changer transitions 24/288 dead transitions. [2021-11-20 06:57:43,619 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 288 transitions, 1976 flow [2021-11-20 06:57:43,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:57:43,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-20 06:57:43,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2923 transitions. [2021-11-20 06:57:43,624 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8187675070028011 [2021-11-20 06:57:43,625 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2923 transitions. [2021-11-20 06:57:43,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2923 transitions. [2021-11-20 06:57:43,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:43,626 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2923 transitions. [2021-11-20 06:57:43,631 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.94117647058823) internal successors, (2923), 17 states have internal predecessors, (2923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:43,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:43,637 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:43,637 INFO L186 Difference]: Start difference. First operand has 315 places, 246 transitions, 1184 flow. Second operand 17 states and 2923 transitions. [2021-11-20 06:57:43,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 288 transitions, 1976 flow [2021-11-20 06:57:43,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 288 transitions, 1832 flow, removed 28 selfloop flow, removed 17 redundant places. [2021-11-20 06:57:43,682 INFO L242 Difference]: Finished difference. Result has 301 places, 254 transitions, 1315 flow [2021-11-20 06:57:43,683 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1118, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1315, PETRI_PLACES=301, PETRI_TRANSITIONS=254} [2021-11-20 06:57:43,684 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 114 predicate places. [2021-11-20 06:57:43,684 INFO L470 AbstractCegarLoop]: Abstraction has has 301 places, 254 transitions, 1315 flow [2021-11-20 06:57:43,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:43,685 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:43,685 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] [2021-11-20 06:57:43,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-20 06:57:43,685 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:43,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:43,686 INFO L85 PathProgramCache]: Analyzing trace with hash -626606794, now seen corresponding path program 18 times [2021-11-20 06:57:43,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:43,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791142100] [2021-11-20 06:57:43,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:43,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:43,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:43,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:43,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791142100] [2021-11-20 06:57:43,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791142100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:43,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:43,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:43,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26899578] [2021-11-20 06:57:43,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:43,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:43,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:43,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:43,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:43,825 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:43,827 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 254 transitions, 1315 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:43,827 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:43,827 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:43,827 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:44,365 INFO L129 PetriNetUnfolder]: 253/1507 cut-off events. [2021-11-20 06:57:44,365 INFO L130 PetriNetUnfolder]: For 6225/6248 co-relation queries the response was YES. [2021-11-20 06:57:44,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4977 conditions, 1507 events. 253/1507 cut-off events. For 6225/6248 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 12190 event pairs, 151 based on Foata normal form. 10/1435 useless extension candidates. Maximal degree in co-relation 4906. Up to 503 conditions per place. [2021-11-20 06:57:44,384 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 80 selfloop transitions, 23 changer transitions 26/296 dead transitions. [2021-11-20 06:57:44,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 296 transitions, 2091 flow [2021-11-20 06:57:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:57:44,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-20 06:57:44,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2925 transitions. [2021-11-20 06:57:44,403 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819327731092437 [2021-11-20 06:57:44,403 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2925 transitions. [2021-11-20 06:57:44,403 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2925 transitions. [2021-11-20 06:57:44,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:44,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2925 transitions. [2021-11-20 06:57:44,408 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 172.05882352941177) internal successors, (2925), 17 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:44,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:44,412 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:44,412 INFO L186 Difference]: Start difference. First operand has 301 places, 254 transitions, 1315 flow. Second operand 17 states and 2925 transitions. [2021-11-20 06:57:44,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 296 transitions, 2091 flow [2021-11-20 06:57:44,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 296 transitions, 1987 flow, removed 30 selfloop flow, removed 9 redundant places. [2021-11-20 06:57:44,456 INFO L242 Difference]: Finished difference. Result has 310 places, 262 transitions, 1470 flow [2021-11-20 06:57:44,456 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1470, PETRI_PLACES=310, PETRI_TRANSITIONS=262} [2021-11-20 06:57:44,457 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 123 predicate places. [2021-11-20 06:57:44,457 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 262 transitions, 1470 flow [2021-11-20 06:57:44,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:44,457 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:44,458 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] [2021-11-20 06:57:44,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-20 06:57:44,458 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:44,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:44,458 INFO L85 PathProgramCache]: Analyzing trace with hash 1698486410, now seen corresponding path program 19 times [2021-11-20 06:57:44,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:44,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682361947] [2021-11-20 06:57:44,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:44,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:44,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:44,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:44,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682361947] [2021-11-20 06:57:44,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682361947] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:44,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:44,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:44,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533222263] [2021-11-20 06:57:44,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:44,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:44,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:44,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:44,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:44,594 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:44,596 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 262 transitions, 1470 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:44,596 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:44,596 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:44,596 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:45,066 INFO L129 PetriNetUnfolder]: 242/1456 cut-off events. [2021-11-20 06:57:45,066 INFO L130 PetriNetUnfolder]: For 5865/5888 co-relation queries the response was YES. [2021-11-20 06:57:45,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4772 conditions, 1456 events. 242/1456 cut-off events. For 5865/5888 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 11652 event pairs, 151 based on Foata normal form. 10/1384 useless extension candidates. Maximal degree in co-relation 4697. Up to 497 conditions per place. [2021-11-20 06:57:45,091 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 76 selfloop transitions, 12 changer transitions 29/284 dead transitions. [2021-11-20 06:57:45,091 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 284 transitions, 1908 flow [2021-11-20 06:57:45,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:57:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 06:57:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3086 transitions. [2021-11-20 06:57:45,095 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8164021164021164 [2021-11-20 06:57:45,095 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3086 transitions. [2021-11-20 06:57:45,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3086 transitions. [2021-11-20 06:57:45,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:45,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3086 transitions. [2021-11-20 06:57:45,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.44444444444446) internal successors, (3086), 18 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) [2021-11-20 06:57:45,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:45,106 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:45,106 INFO L186 Difference]: Start difference. First operand has 310 places, 262 transitions, 1470 flow. Second operand 18 states and 3086 transitions. [2021-11-20 06:57:45,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 284 transitions, 1908 flow [2021-11-20 06:57:45,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 284 transitions, 1805 flow, removed 38 selfloop flow, removed 8 redundant places. [2021-11-20 06:57:45,150 INFO L242 Difference]: Finished difference. Result has 316 places, 248 transitions, 1200 flow [2021-11-20 06:57:45,151 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1379, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1200, PETRI_PLACES=316, PETRI_TRANSITIONS=248} [2021-11-20 06:57:45,151 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 129 predicate places. [2021-11-20 06:57:45,152 INFO L470 AbstractCegarLoop]: Abstraction has has 316 places, 248 transitions, 1200 flow [2021-11-20 06:57:45,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:45,152 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:45,153 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] [2021-11-20 06:57:45,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-20 06:57:45,153 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:45,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:45,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1111139782, now seen corresponding path program 20 times [2021-11-20 06:57:45,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:45,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720894359] [2021-11-20 06:57:45,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:45,154 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:45,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:45,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:45,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:45,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720894359] [2021-11-20 06:57:45,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720894359] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:45,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:45,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:45,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011542512] [2021-11-20 06:57:45,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:45,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:45,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:45,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:45,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:45,278 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:45,279 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 248 transitions, 1200 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:45,279 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:45,279 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:45,280 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:45,771 INFO L129 PetriNetUnfolder]: 229/1371 cut-off events. [2021-11-20 06:57:45,772 INFO L130 PetriNetUnfolder]: For 5196/5219 co-relation queries the response was YES. [2021-11-20 06:57:45,783 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4362 conditions, 1371 events. 229/1371 cut-off events. For 5196/5219 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 10829 event pairs, 147 based on Foata normal form. 10/1300 useless extension candidates. Maximal degree in co-relation 4288. Up to 475 conditions per place. [2021-11-20 06:57:45,788 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 67 selfloop transitions, 2 changer transitions 30/266 dead transitions. [2021-11-20 06:57:45,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 266 transitions, 1526 flow [2021-11-20 06:57:45,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:57:45,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 06:57:45,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3079 transitions. [2021-11-20 06:57:45,792 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8145502645502646 [2021-11-20 06:57:45,792 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3079 transitions. [2021-11-20 06:57:45,792 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3079 transitions. [2021-11-20 06:57:45,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:45,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3079 transitions. [2021-11-20 06:57:45,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.05555555555554) internal successors, (3079), 18 states have internal predecessors, (3079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:45,801 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:45,802 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:45,802 INFO L186 Difference]: Start difference. First operand has 316 places, 248 transitions, 1200 flow. Second operand 18 states and 3079 transitions. [2021-11-20 06:57:45,803 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 266 transitions, 1526 flow [2021-11-20 06:57:45,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 266 transitions, 1444 flow, removed 16 selfloop flow, removed 17 redundant places. [2021-11-20 06:57:45,838 INFO L242 Difference]: Finished difference. Result has 304 places, 229 transitions, 905 flow [2021-11-20 06:57:45,838 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=905, PETRI_PLACES=304, PETRI_TRANSITIONS=229} [2021-11-20 06:57:45,839 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 117 predicate places. [2021-11-20 06:57:45,839 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 229 transitions, 905 flow [2021-11-20 06:57:45,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:45,840 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:45,840 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] [2021-11-20 06:57:45,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-20 06:57:45,840 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:45,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:45,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1277174474, now seen corresponding path program 1 times [2021-11-20 06:57:45,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:45,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660346398] [2021-11-20 06:57:45,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:45,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:45,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:45,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660346398] [2021-11-20 06:57:45,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660346398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:45,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:45,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:57:45,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980834531] [2021-11-20 06:57:45,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:45,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:57:45,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:45,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:57:45,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:57:45,865 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-11-20 06:57:45,865 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 229 transitions, 905 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:45,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:45,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-11-20 06:57:45,866 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:46,085 INFO L129 PetriNetUnfolder]: 118/1219 cut-off events. [2021-11-20 06:57:46,085 INFO L130 PetriNetUnfolder]: For 3225/3254 co-relation queries the response was YES. [2021-11-20 06:57:46,098 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3048 conditions, 1219 events. 118/1219 cut-off events. For 3225/3254 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 9492 event pairs, 68 based on Foata normal form. 14/1163 useless extension candidates. Maximal degree in co-relation 2979. Up to 70 conditions per place. [2021-11-20 06:57:46,103 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 11 selfloop transitions, 3 changer transitions 6/235 dead transitions. [2021-11-20 06:57:46,103 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 235 transitions, 956 flow [2021-11-20 06:57:46,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:57:46,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:57:46,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2021-11-20 06:57:46,104 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2021-11-20 06:57:46,104 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2021-11-20 06:57:46,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2021-11-20 06:57:46,105 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:46,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2021-11-20 06:57:46,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:46,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:46,107 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:46,107 INFO L186 Difference]: Start difference. First operand has 304 places, 229 transitions, 905 flow. Second operand 3 states and 591 transitions. [2021-11-20 06:57:46,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 235 transitions, 956 flow [2021-11-20 06:57:46,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 235 transitions, 912 flow, removed 17 selfloop flow, removed 19 redundant places. [2021-11-20 06:57:46,130 INFO L242 Difference]: Finished difference. Result has 259 places, 227 transitions, 863 flow [2021-11-20 06:57:46,131 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=863, PETRI_PLACES=259, PETRI_TRANSITIONS=227} [2021-11-20 06:57:46,131 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 72 predicate places. [2021-11-20 06:57:46,132 INFO L470 AbstractCegarLoop]: Abstraction has has 259 places, 227 transitions, 863 flow [2021-11-20 06:57:46,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:46,132 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:46,132 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] [2021-11-20 06:57:46,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-20 06:57:46,133 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:46,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:46,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1953246824, now seen corresponding path program 2 times [2021-11-20 06:57:46,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:46,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032567149] [2021-11-20 06:57:46,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:46,134 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:46,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:46,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:46,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032567149] [2021-11-20 06:57:46,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032567149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:46,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:46,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:57:46,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135738859] [2021-11-20 06:57:46,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:46,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:57:46,156 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:46,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:57:46,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:57:46,157 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-11-20 06:57:46,158 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 227 transitions, 863 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:46,158 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:46,158 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-11-20 06:57:46,158 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:46,271 INFO L129 PetriNetUnfolder]: 50/678 cut-off events. [2021-11-20 06:57:46,271 INFO L130 PetriNetUnfolder]: For 1149/1158 co-relation queries the response was YES. [2021-11-20 06:57:46,275 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1444 conditions, 678 events. 50/678 cut-off events. For 1149/1158 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 4108 event pairs, 21 based on Foata normal form. 10/646 useless extension candidates. Maximal degree in co-relation 1390. Up to 37 conditions per place. [2021-11-20 06:57:46,276 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 8 selfloop transitions, 5 changer transitions 25/219 dead transitions. [2021-11-20 06:57:46,276 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 219 transitions, 819 flow [2021-11-20 06:57:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:57:46,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:57:46,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 590 transitions. [2021-11-20 06:57:46,277 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9365079365079365 [2021-11-20 06:57:46,278 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 590 transitions. [2021-11-20 06:57:46,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 590 transitions. [2021-11-20 06:57:46,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:46,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 590 transitions. [2021-11-20 06:57:46,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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) [2021-11-20 06:57:46,279 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:46,279 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:46,279 INFO L186 Difference]: Start difference. First operand has 259 places, 227 transitions, 863 flow. Second operand 3 states and 590 transitions. [2021-11-20 06:57:46,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 219 transitions, 819 flow [2021-11-20 06:57:46,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 219 transitions, 738 flow, removed 35 selfloop flow, removed 11 redundant places. [2021-11-20 06:57:46,289 INFO L242 Difference]: Finished difference. Result has 249 places, 193 transitions, 589 flow [2021-11-20 06:57:46,289 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=686, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=589, PETRI_PLACES=249, PETRI_TRANSITIONS=193} [2021-11-20 06:57:46,289 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 62 predicate places. [2021-11-20 06:57:46,290 INFO L470 AbstractCegarLoop]: Abstraction has has 249 places, 193 transitions, 589 flow [2021-11-20 06:57:46,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:46,290 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:46,290 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] [2021-11-20 06:57:46,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-20 06:57:46,290 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:46,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:46,291 INFO L85 PathProgramCache]: Analyzing trace with hash -966927384, now seen corresponding path program 2 times [2021-11-20 06:57:46,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:46,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929041273] [2021-11-20 06:57:46,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:46,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:46,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:46,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:46,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929041273] [2021-11-20 06:57:46,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929041273] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:46,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:46,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:46,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772717333] [2021-11-20 06:57:46,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:46,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:46,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:46,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:46,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:46,409 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:46,410 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 193 transitions, 589 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:46,410 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:46,411 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:46,411 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:46,924 INFO L129 PetriNetUnfolder]: 101/748 cut-off events. [2021-11-20 06:57:46,925 INFO L130 PetriNetUnfolder]: For 1392/1401 co-relation queries the response was YES. [2021-11-20 06:57:46,931 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1823 conditions, 748 events. 101/748 cut-off events. For 1392/1401 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4704 event pairs, 34 based on Foata normal form. 1/712 useless extension candidates. Maximal degree in co-relation 1779. Up to 115 conditions per place. [2021-11-20 06:57:46,934 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 6 changer transitions 41/275 dead transitions. [2021-11-20 06:57:46,934 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 275 transitions, 1275 flow [2021-11-20 06:57:46,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-20 06:57:46,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2021-11-20 06:57:46,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 4121 transitions. [2021-11-20 06:57:46,939 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8176587301587301 [2021-11-20 06:57:46,939 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 4121 transitions. [2021-11-20 06:57:46,939 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 4121 transitions. [2021-11-20 06:57:46,941 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:46,941 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 4121 transitions. [2021-11-20 06:57:46,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 171.70833333333334) internal successors, (4121), 24 states have internal predecessors, (4121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:46,951 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:46,952 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 210.0) internal successors, (5250), 25 states have internal predecessors, (5250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:46,953 INFO L186 Difference]: Start difference. First operand has 249 places, 193 transitions, 589 flow. Second operand 24 states and 4121 transitions. [2021-11-20 06:57:46,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 275 transitions, 1275 flow [2021-11-20 06:57:46,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 275 transitions, 1216 flow, removed 27 selfloop flow, removed 14 redundant places. [2021-11-20 06:57:46,967 INFO L242 Difference]: Finished difference. Result has 258 places, 197 transitions, 664 flow [2021-11-20 06:57:46,968 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=664, PETRI_PLACES=258, PETRI_TRANSITIONS=197} [2021-11-20 06:57:46,968 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 71 predicate places. [2021-11-20 06:57:46,968 INFO L470 AbstractCegarLoop]: Abstraction has has 258 places, 197 transitions, 664 flow [2021-11-20 06:57:46,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:46,969 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:46,969 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] [2021-11-20 06:57:46,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-20 06:57:46,970 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:46,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:46,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1737283136, now seen corresponding path program 3 times [2021-11-20 06:57:46,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:46,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672553104] [2021-11-20 06:57:46,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:46,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:47,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:47,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:47,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672553104] [2021-11-20 06:57:47,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672553104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:47,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:47,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:47,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557210741] [2021-11-20 06:57:47,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:47,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:47,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:47,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:47,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:47,117 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:47,118 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 197 transitions, 664 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:47,118 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:47,118 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:47,118 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:47,423 INFO L129 PetriNetUnfolder]: 101/769 cut-off events. [2021-11-20 06:57:47,423 INFO L130 PetriNetUnfolder]: For 2223/2226 co-relation queries the response was YES. [2021-11-20 06:57:47,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2071 conditions, 769 events. 101/769 cut-off events. For 2223/2226 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4860 event pairs, 39 based on Foata normal form. 1/729 useless extension candidates. Maximal degree in co-relation 2018. Up to 143 conditions per place. [2021-11-20 06:57:47,434 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 52 selfloop transitions, 14 changer transitions 26/248 dead transitions. [2021-11-20 06:57:47,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 248 transitions, 1327 flow [2021-11-20 06:57:47,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:57:47,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-20 06:57:47,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2755 transitions. [2021-11-20 06:57:47,438 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8199404761904762 [2021-11-20 06:57:47,438 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2755 transitions. [2021-11-20 06:57:47,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2755 transitions. [2021-11-20 06:57:47,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:47,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2755 transitions. [2021-11-20 06:57:47,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 172.1875) internal successors, (2755), 16 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:47,446 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:47,447 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:47,447 INFO L186 Difference]: Start difference. First operand has 258 places, 197 transitions, 664 flow. Second operand 16 states and 2755 transitions. [2021-11-20 06:57:47,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 248 transitions, 1327 flow [2021-11-20 06:57:47,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 248 transitions, 1117 flow, removed 100 selfloop flow, removed 13 redundant places. [2021-11-20 06:57:47,464 INFO L242 Difference]: Finished difference. Result has 254 places, 207 transitions, 752 flow [2021-11-20 06:57:47,464 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=752, PETRI_PLACES=254, PETRI_TRANSITIONS=207} [2021-11-20 06:57:47,465 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 67 predicate places. [2021-11-20 06:57:47,465 INFO L470 AbstractCegarLoop]: Abstraction has has 254 places, 207 transitions, 752 flow [2021-11-20 06:57:47,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:47,466 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:47,466 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] [2021-11-20 06:57:47,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-20 06:57:47,466 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:47,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:47,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1512253328, now seen corresponding path program 4 times [2021-11-20 06:57:47,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:47,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578497552] [2021-11-20 06:57:47,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:47,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:47,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:47,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:47,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:47,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578497552] [2021-11-20 06:57:47,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578497552] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:47,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:47,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:47,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357200945] [2021-11-20 06:57:47,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:47,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:47,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:47,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:47,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:47,572 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:47,573 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 207 transitions, 752 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:47,573 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:47,574 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:47,574 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:47,881 INFO L129 PetriNetUnfolder]: 107/784 cut-off events. [2021-11-20 06:57:47,882 INFO L130 PetriNetUnfolder]: For 1674/1678 co-relation queries the response was YES. [2021-11-20 06:57:47,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2057 conditions, 784 events. 107/784 cut-off events. For 1674/1678 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 4970 event pairs, 41 based on Foata normal form. 1/742 useless extension candidates. Maximal degree in co-relation 2004. Up to 155 conditions per place. [2021-11-20 06:57:47,892 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 58 selfloop transitions, 18 changer transitions 23/255 dead transitions. [2021-11-20 06:57:47,892 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 255 transitions, 1378 flow [2021-11-20 06:57:47,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 06:57:47,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2021-11-20 06:57:47,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2751 transitions. [2021-11-20 06:57:47,895 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.81875 [2021-11-20 06:57:47,895 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2751 transitions. [2021-11-20 06:57:47,896 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2751 transitions. [2021-11-20 06:57:47,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:47,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2751 transitions. [2021-11-20 06:57:47,900 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 171.9375) internal successors, (2751), 16 states have internal predecessors, (2751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:47,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:47,904 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 210.0) internal successors, (3570), 17 states have internal predecessors, (3570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:47,904 INFO L186 Difference]: Start difference. First operand has 254 places, 207 transitions, 752 flow. Second operand 16 states and 2751 transitions. [2021-11-20 06:57:47,905 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 255 transitions, 1378 flow [2021-11-20 06:57:47,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 255 transitions, 1276 flow, removed 32 selfloop flow, removed 14 redundant places. [2021-11-20 06:57:47,919 INFO L242 Difference]: Finished difference. Result has 259 places, 217 transitions, 890 flow [2021-11-20 06:57:47,919 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=890, PETRI_PLACES=259, PETRI_TRANSITIONS=217} [2021-11-20 06:57:47,920 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 72 predicate places. [2021-11-20 06:57:47,920 INFO L470 AbstractCegarLoop]: Abstraction has has 259 places, 217 transitions, 890 flow [2021-11-20 06:57:47,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:47,921 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:47,921 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:57:47,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-20 06:57:47,921 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:47,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:47,922 INFO L85 PathProgramCache]: Analyzing trace with hash 594294270, now seen corresponding path program 5 times [2021-11-20 06:57:47,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:47,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874825333] [2021-11-20 06:57:47,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:47,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:48,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:48,053 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:48,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874825333] [2021-11-20 06:57:48,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874825333] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:48,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:48,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:48,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483389450] [2021-11-20 06:57:48,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:48,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:48,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:48,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:48,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:48,057 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:48,059 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 217 transitions, 890 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:48,059 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:48,059 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:48,059 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:48,575 INFO L129 PetriNetUnfolder]: 134/880 cut-off events. [2021-11-20 06:57:48,575 INFO L130 PetriNetUnfolder]: For 2270/2276 co-relation queries the response was YES. [2021-11-20 06:57:48,582 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2536 conditions, 880 events. 134/880 cut-off events. For 2270/2276 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 5809 event pairs, 54 based on Foata normal form. 2/839 useless extension candidates. Maximal degree in co-relation 2484. Up to 161 conditions per place. [2021-11-20 06:57:48,585 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 76 selfloop transitions, 18 changer transitions 32/282 dead transitions. [2021-11-20 06:57:48,585 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 282 transitions, 1792 flow [2021-11-20 06:57:48,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:57:48,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 06:57:48,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3604 transitions. [2021-11-20 06:57:48,590 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8172335600907029 [2021-11-20 06:57:48,590 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3604 transitions. [2021-11-20 06:57:48,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3604 transitions. [2021-11-20 06:57:48,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:48,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3604 transitions. [2021-11-20 06:57:48,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.61904761904762) internal successors, (3604), 21 states have internal predecessors, (3604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:48,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:48,602 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:48,602 INFO L186 Difference]: Start difference. First operand has 259 places, 217 transitions, 890 flow. Second operand 21 states and 3604 transitions. [2021-11-20 06:57:48,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 282 transitions, 1792 flow [2021-11-20 06:57:48,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 282 transitions, 1669 flow, removed 43 selfloop flow, removed 8 redundant places. [2021-11-20 06:57:48,620 INFO L242 Difference]: Finished difference. Result has 280 places, 230 transitions, 1066 flow [2021-11-20 06:57:48,620 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1066, PETRI_PLACES=280, PETRI_TRANSITIONS=230} [2021-11-20 06:57:48,621 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 93 predicate places. [2021-11-20 06:57:48,621 INFO L470 AbstractCegarLoop]: Abstraction has has 280 places, 230 transitions, 1066 flow [2021-11-20 06:57:48,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:48,622 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:48,622 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] [2021-11-20 06:57:48,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-20 06:57:48,622 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:48,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:48,623 INFO L85 PathProgramCache]: Analyzing trace with hash 2079089572, now seen corresponding path program 6 times [2021-11-20 06:57:48,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:48,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911314040] [2021-11-20 06:57:48,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:48,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:48,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:48,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:48,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:48,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911314040] [2021-11-20 06:57:48,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911314040] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:48,735 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:48,735 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:48,735 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197084362] [2021-11-20 06:57:48,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:48,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:48,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:48,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:48,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:48,738 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:48,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 230 transitions, 1066 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:48,740 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:48,740 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:48,740 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:49,137 INFO L129 PetriNetUnfolder]: 136/929 cut-off events. [2021-11-20 06:57:49,137 INFO L130 PetriNetUnfolder]: For 3411/3423 co-relation queries the response was YES. [2021-11-20 06:57:49,145 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2869 conditions, 929 events. 136/929 cut-off events. For 3411/3423 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 6426 event pairs, 58 based on Foata normal form. 1/884 useless extension candidates. Maximal degree in co-relation 2807. Up to 156 conditions per place. [2021-11-20 06:57:49,148 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 26 changer transitions 33/287 dead transitions. [2021-11-20 06:57:49,148 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 287 transitions, 2029 flow [2021-11-20 06:57:49,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 06:57:49,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 06:57:49,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3435 transitions. [2021-11-20 06:57:49,152 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8178571428571428 [2021-11-20 06:57:49,152 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3435 transitions. [2021-11-20 06:57:49,152 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3435 transitions. [2021-11-20 06:57:49,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:49,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3435 transitions. [2021-11-20 06:57:49,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.75) internal successors, (3435), 20 states have internal predecessors, (3435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:49,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:49,164 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:49,164 INFO L186 Difference]: Start difference. First operand has 280 places, 230 transitions, 1066 flow. Second operand 20 states and 3435 transitions. [2021-11-20 06:57:49,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 287 transitions, 2029 flow [2021-11-20 06:57:49,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 287 transitions, 1893 flow, removed 68 selfloop flow, removed 9 redundant places. [2021-11-20 06:57:49,189 INFO L242 Difference]: Finished difference. Result has 294 places, 240 transitions, 1286 flow [2021-11-20 06:57:49,189 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=230, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1286, PETRI_PLACES=294, PETRI_TRANSITIONS=240} [2021-11-20 06:57:49,190 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 107 predicate places. [2021-11-20 06:57:49,190 INFO L470 AbstractCegarLoop]: Abstraction has has 294 places, 240 transitions, 1286 flow [2021-11-20 06:57:49,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:49,191 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:49,191 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] [2021-11-20 06:57:49,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-20 06:57:49,191 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:49,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:49,192 INFO L85 PathProgramCache]: Analyzing trace with hash 669199730, now seen corresponding path program 7 times [2021-11-20 06:57:49,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:49,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1516556491] [2021-11-20 06:57:49,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:49,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:49,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:49,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:49,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:49,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1516556491] [2021-11-20 06:57:49,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1516556491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:49,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:49,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:49,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249338626] [2021-11-20 06:57:49,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:49,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:49,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:49,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:49,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:49,307 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:49,309 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 240 transitions, 1286 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:49,309 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:49,309 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:49,309 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:49,731 INFO L129 PetriNetUnfolder]: 131/954 cut-off events. [2021-11-20 06:57:49,731 INFO L130 PetriNetUnfolder]: For 4103/4114 co-relation queries the response was YES. [2021-11-20 06:57:49,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3036 conditions, 954 events. 131/954 cut-off events. For 4103/4114 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6816 event pairs, 51 based on Foata normal form. 1/905 useless extension candidates. Maximal degree in co-relation 2965. Up to 187 conditions per place. [2021-11-20 06:57:49,744 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 78 selfloop transitions, 28 changer transitions 33/295 dead transitions. [2021-11-20 06:57:49,745 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 295 transitions, 2320 flow [2021-11-20 06:57:49,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-20 06:57:49,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2021-11-20 06:57:49,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3430 transitions. [2021-11-20 06:57:49,749 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2021-11-20 06:57:49,749 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3430 transitions. [2021-11-20 06:57:49,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3430 transitions. [2021-11-20 06:57:49,751 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:49,751 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3430 transitions. [2021-11-20 06:57:49,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 171.5) internal successors, (3430), 20 states have internal predecessors, (3430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:49,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:49,761 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 210.0) internal successors, (4410), 21 states have internal predecessors, (4410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:49,761 INFO L186 Difference]: Start difference. First operand has 294 places, 240 transitions, 1286 flow. Second operand 20 states and 3430 transitions. [2021-11-20 06:57:49,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 295 transitions, 2320 flow [2021-11-20 06:57:49,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 295 transitions, 2155 flow, removed 73 selfloop flow, removed 11 redundant places. [2021-11-20 06:57:49,792 INFO L242 Difference]: Finished difference. Result has 305 places, 250 transitions, 1478 flow [2021-11-20 06:57:49,793 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1207, PETRI_DIFFERENCE_MINUEND_PLACES=271, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1478, PETRI_PLACES=305, PETRI_TRANSITIONS=250} [2021-11-20 06:57:49,793 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 118 predicate places. [2021-11-20 06:57:49,794 INFO L470 AbstractCegarLoop]: Abstraction has has 305 places, 250 transitions, 1478 flow [2021-11-20 06:57:49,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:49,794 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:49,795 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:57:49,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-20 06:57:49,795 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:49,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:49,795 INFO L85 PathProgramCache]: Analyzing trace with hash -610529816, now seen corresponding path program 8 times [2021-11-20 06:57:49,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:49,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292822624] [2021-11-20 06:57:49,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:49,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:49,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:49,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:49,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292822624] [2021-11-20 06:57:49,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292822624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:49,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:49,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:49,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106214060] [2021-11-20 06:57:49,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:49,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:49,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:49,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:49,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:49,922 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:49,924 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 305 places, 250 transitions, 1478 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:49,924 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:49,924 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:49,924 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:50,402 INFO L129 PetriNetUnfolder]: 128/954 cut-off events. [2021-11-20 06:57:50,403 INFO L130 PetriNetUnfolder]: For 4112/4123 co-relation queries the response was YES. [2021-11-20 06:57:50,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3012 conditions, 954 events. 128/954 cut-off events. For 4112/4123 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 6836 event pairs, 41 based on Foata normal form. 3/913 useless extension candidates. Maximal degree in co-relation 2936. Up to 170 conditions per place. [2021-11-20 06:57:50,418 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 81 selfloop transitions, 30 changer transitions 37/304 dead transitions. [2021-11-20 06:57:50,418 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 304 transitions, 2466 flow [2021-11-20 06:57:50,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 06:57:50,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 06:57:50,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3766 transitions. [2021-11-20 06:57:50,423 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8151515151515152 [2021-11-20 06:57:50,423 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3766 transitions. [2021-11-20 06:57:50,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3766 transitions. [2021-11-20 06:57:50,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:50,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3766 transitions. [2021-11-20 06:57:50,429 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.1818181818182) internal successors, (3766), 22 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:50,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:50,435 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:50,435 INFO L186 Difference]: Start difference. First operand has 305 places, 250 transitions, 1478 flow. Second operand 22 states and 3766 transitions. [2021-11-20 06:57:50,435 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 304 transitions, 2466 flow [2021-11-20 06:57:50,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 304 transitions, 2276 flow, removed 75 selfloop flow, removed 13 redundant places. [2021-11-20 06:57:50,468 INFO L242 Difference]: Finished difference. Result has 314 places, 249 transitions, 1471 flow [2021-11-20 06:57:50,469 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1380, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=1471, PETRI_PLACES=314, PETRI_TRANSITIONS=249} [2021-11-20 06:57:50,470 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 127 predicate places. [2021-11-20 06:57:50,470 INFO L470 AbstractCegarLoop]: Abstraction has has 314 places, 249 transitions, 1471 flow [2021-11-20 06:57:50,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:50,471 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:50,471 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] [2021-11-20 06:57:50,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-20 06:57:50,471 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:50,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:50,472 INFO L85 PathProgramCache]: Analyzing trace with hash -2098108910, now seen corresponding path program 9 times [2021-11-20 06:57:50,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:50,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812965961] [2021-11-20 06:57:50,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:50,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:50,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:50,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:50,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:50,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812965961] [2021-11-20 06:57:50,609 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812965961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:50,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:50,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:50,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867978537] [2021-11-20 06:57:50,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:50,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:50,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:50,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:50,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:50,614 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:50,615 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 249 transitions, 1471 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:50,616 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:50,616 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:50,616 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:50,973 INFO L129 PetriNetUnfolder]: 110/843 cut-off events. [2021-11-20 06:57:50,973 INFO L130 PetriNetUnfolder]: For 3173/3192 co-relation queries the response was YES. [2021-11-20 06:57:50,983 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2574 conditions, 843 events. 110/843 cut-off events. For 3173/3192 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5610 event pairs, 38 based on Foata normal form. 8/808 useless extension candidates. Maximal degree in co-relation 2496. Up to 164 conditions per place. [2021-11-20 06:57:50,986 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 18 changer transitions 34/280 dead transitions. [2021-11-20 06:57:50,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 280 transitions, 2056 flow [2021-11-20 06:57:50,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:57:50,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 06:57:50,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3082 transitions. [2021-11-20 06:57:50,991 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8153439153439154 [2021-11-20 06:57:50,991 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3082 transitions. [2021-11-20 06:57:50,991 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3082 transitions. [2021-11-20 06:57:50,992 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:50,992 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3082 transitions. [2021-11-20 06:57:50,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.22222222222223) internal successors, (3082), 18 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:51,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:51,001 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:51,001 INFO L186 Difference]: Start difference. First operand has 314 places, 249 transitions, 1471 flow. Second operand 18 states and 3082 transitions. [2021-11-20 06:57:51,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 280 transitions, 2056 flow [2021-11-20 06:57:51,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 280 transitions, 1917 flow, removed 44 selfloop flow, removed 17 redundant places. [2021-11-20 06:57:51,030 INFO L242 Difference]: Finished difference. Result has 307 places, 234 transitions, 1214 flow [2021-11-20 06:57:51,031 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1375, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1214, PETRI_PLACES=307, PETRI_TRANSITIONS=234} [2021-11-20 06:57:51,031 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 120 predicate places. [2021-11-20 06:57:51,031 INFO L470 AbstractCegarLoop]: Abstraction has has 307 places, 234 transitions, 1214 flow [2021-11-20 06:57:51,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:51,032 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:51,032 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] [2021-11-20 06:57:51,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-20 06:57:51,033 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:51,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:51,033 INFO L85 PathProgramCache]: Analyzing trace with hash -1684289930, now seen corresponding path program 10 times [2021-11-20 06:57:51,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:51,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116523452] [2021-11-20 06:57:51,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:51,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:51,153 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:51,154 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:51,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116523452] [2021-11-20 06:57:51,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116523452] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:51,154 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:51,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:51,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999164083] [2021-11-20 06:57:51,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:51,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:51,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:51,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:51,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:51,158 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:51,159 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 234 transitions, 1214 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:51,159 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:51,159 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:51,160 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:51,527 INFO L129 PetriNetUnfolder]: 114/870 cut-off events. [2021-11-20 06:57:51,527 INFO L130 PetriNetUnfolder]: For 3002/3015 co-relation queries the response was YES. [2021-11-20 06:57:51,536 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2644 conditions, 870 events. 114/870 cut-off events. For 3002/3015 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5872 event pairs, 44 based on Foata normal form. 4/831 useless extension candidates. Maximal degree in co-relation 2574. Up to 167 conditions per place. [2021-11-20 06:57:51,539 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 71 selfloop transitions, 24 changer transitions 28/279 dead transitions. [2021-11-20 06:57:51,540 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 279 transitions, 2026 flow [2021-11-20 06:57:51,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:57:51,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-20 06:57:51,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2924 transitions. [2021-11-20 06:57:51,543 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.819047619047619 [2021-11-20 06:57:51,544 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2924 transitions. [2021-11-20 06:57:51,544 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2924 transitions. [2021-11-20 06:57:51,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:51,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2924 transitions. [2021-11-20 06:57:51,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 172.0) internal successors, (2924), 17 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:51,552 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:51,553 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:51,553 INFO L186 Difference]: Start difference. First operand has 307 places, 234 transitions, 1214 flow. Second operand 17 states and 2924 transitions. [2021-11-20 06:57:51,553 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 279 transitions, 2026 flow [2021-11-20 06:57:51,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 285 places, 279 transitions, 1869 flow, removed 28 selfloop flow, removed 15 redundant places. [2021-11-20 06:57:51,578 INFO L242 Difference]: Finished difference. Result has 295 places, 242 transitions, 1334 flow [2021-11-20 06:57:51,578 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1334, PETRI_PLACES=295, PETRI_TRANSITIONS=242} [2021-11-20 06:57:51,579 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 108 predicate places. [2021-11-20 06:57:51,579 INFO L470 AbstractCegarLoop]: Abstraction has has 295 places, 242 transitions, 1334 flow [2021-11-20 06:57:51,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:51,579 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:51,580 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] [2021-11-20 06:57:51,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-20 06:57:51,580 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:51,581 INFO L85 PathProgramCache]: Analyzing trace with hash 926346412, now seen corresponding path program 11 times [2021-11-20 06:57:51,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:51,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751087435] [2021-11-20 06:57:51,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:51,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:51,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:51,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:51,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751087435] [2021-11-20 06:57:51,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751087435] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:51,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:51,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:51,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630531813] [2021-11-20 06:57:51,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:51,694 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:51,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:51,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:51,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:51,697 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:51,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 242 transitions, 1334 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:51,699 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:51,699 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:51,699 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:52,035 INFO L129 PetriNetUnfolder]: 113/856 cut-off events. [2021-11-20 06:57:52,036 INFO L130 PetriNetUnfolder]: For 2919/2924 co-relation queries the response was YES. [2021-11-20 06:57:52,042 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2609 conditions, 856 events. 113/856 cut-off events. For 2919/2924 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5764 event pairs, 46 based on Foata normal form. 1/809 useless extension candidates. Maximal degree in co-relation 2539. Up to 168 conditions per place. [2021-11-20 06:57:52,044 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 72 selfloop transitions, 27 changer transitions 28/283 dead transitions. [2021-11-20 06:57:52,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 283 transitions, 2131 flow [2021-11-20 06:57:52,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:57:52,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-20 06:57:52,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2922 transitions. [2021-11-20 06:57:52,047 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8184873949579832 [2021-11-20 06:57:52,047 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2922 transitions. [2021-11-20 06:57:52,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2922 transitions. [2021-11-20 06:57:52,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:52,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2922 transitions. [2021-11-20 06:57:52,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.88235294117646) internal successors, (2922), 17 states have internal predecessors, (2922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:52,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:52,056 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:52,057 INFO L186 Difference]: Start difference. First operand has 295 places, 242 transitions, 1334 flow. Second operand 17 states and 2922 transitions. [2021-11-20 06:57:52,057 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 283 transitions, 2131 flow [2021-11-20 06:57:52,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 283 transitions, 2017 flow, removed 31 selfloop flow, removed 9 redundant places. [2021-11-20 06:57:52,083 INFO L242 Difference]: Finished difference. Result has 304 places, 250 transitions, 1497 flow [2021-11-20 06:57:52,083 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1259, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1497, PETRI_PLACES=304, PETRI_TRANSITIONS=250} [2021-11-20 06:57:52,084 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 117 predicate places. [2021-11-20 06:57:52,084 INFO L470 AbstractCegarLoop]: Abstraction has has 304 places, 250 transitions, 1497 flow [2021-11-20 06:57:52,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:52,085 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:52,085 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] [2021-11-20 06:57:52,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-20 06:57:52,085 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:52,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:52,086 INFO L85 PathProgramCache]: Analyzing trace with hash 236592104, now seen corresponding path program 12 times [2021-11-20 06:57:52,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:52,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144128918] [2021-11-20 06:57:52,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:52,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:52,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:52,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:52,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144128918] [2021-11-20 06:57:52,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144128918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:52,206 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:52,206 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:52,206 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074101183] [2021-11-20 06:57:52,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:52,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:52,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:52,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:52,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:52,209 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:52,211 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 250 transitions, 1497 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:52,211 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:52,211 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:52,211 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:52,636 INFO L129 PetriNetUnfolder]: 103/839 cut-off events. [2021-11-20 06:57:52,637 INFO L130 PetriNetUnfolder]: For 2546/2551 co-relation queries the response was YES. [2021-11-20 06:57:52,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2445 conditions, 839 events. 103/839 cut-off events. For 2546/2551 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5591 event pairs, 42 based on Foata normal form. 1/797 useless extension candidates. Maximal degree in co-relation 2371. Up to 161 conditions per place. [2021-11-20 06:57:52,647 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 69 selfloop transitions, 16 changer transitions 34/275 dead transitions. [2021-11-20 06:57:52,647 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 275 transitions, 1961 flow [2021-11-20 06:57:52,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:57:52,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 06:57:52,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3087 transitions. [2021-11-20 06:57:52,650 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8166666666666667 [2021-11-20 06:57:52,651 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3087 transitions. [2021-11-20 06:57:52,651 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3087 transitions. [2021-11-20 06:57:52,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:52,652 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3087 transitions. [2021-11-20 06:57:52,655 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.5) internal successors, (3087), 18 states have internal predecessors, (3087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:52,659 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:52,660 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:52,660 INFO L186 Difference]: Start difference. First operand has 304 places, 250 transitions, 1497 flow. Second operand 18 states and 3087 transitions. [2021-11-20 06:57:52,660 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 275 transitions, 1961 flow [2021-11-20 06:57:52,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 275 transitions, 1860 flow, removed 35 selfloop flow, removed 8 redundant places. [2021-11-20 06:57:52,685 INFO L242 Difference]: Finished difference. Result has 310 places, 236 transitions, 1232 flow [2021-11-20 06:57:52,686 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1408, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1232, PETRI_PLACES=310, PETRI_TRANSITIONS=236} [2021-11-20 06:57:52,687 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 123 predicate places. [2021-11-20 06:57:52,687 INFO L470 AbstractCegarLoop]: Abstraction has has 310 places, 236 transitions, 1232 flow [2021-11-20 06:57:52,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:52,688 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:52,688 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] [2021-11-20 06:57:52,689 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-20 06:57:52,689 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:52,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:52,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1006733250, now seen corresponding path program 13 times [2021-11-20 06:57:52,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:52,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303414093] [2021-11-20 06:57:52,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:52,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:52,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:52,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:52,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:52,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303414093] [2021-11-20 06:57:52,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303414093] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:52,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:52,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:52,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416663054] [2021-11-20 06:57:52,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:52,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:52,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:52,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:52,806 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:52,807 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 236 transitions, 1232 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:52,808 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:52,808 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:52,808 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:53,172 INFO L129 PetriNetUnfolder]: 91/747 cut-off events. [2021-11-20 06:57:53,172 INFO L130 PetriNetUnfolder]: For 2084/2095 co-relation queries the response was YES. [2021-11-20 06:57:53,180 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2089 conditions, 747 events. 91/747 cut-off events. For 2084/2095 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4673 event pairs, 39 based on Foata normal form. 3/710 useless extension candidates. Maximal degree in co-relation 2016. Up to 149 conditions per place. [2021-11-20 06:57:53,183 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 59 selfloop transitions, 5 changer transitions 33/253 dead transitions. [2021-11-20 06:57:53,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 253 transitions, 1568 flow [2021-11-20 06:57:53,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:57:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 06:57:53,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3076 transitions. [2021-11-20 06:57:53,186 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8137566137566138 [2021-11-20 06:57:53,187 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3076 transitions. [2021-11-20 06:57:53,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3076 transitions. [2021-11-20 06:57:53,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:53,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3076 transitions. [2021-11-20 06:57:53,191 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.88888888888889) internal successors, (3076), 18 states have internal predecessors, (3076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:53,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:53,196 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:53,196 INFO L186 Difference]: Start difference. First operand has 310 places, 236 transitions, 1232 flow. Second operand 18 states and 3076 transitions. [2021-11-20 06:57:53,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 253 transitions, 1568 flow [2021-11-20 06:57:53,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 253 transitions, 1451 flow, removed 24 selfloop flow, removed 18 redundant places. [2021-11-20 06:57:53,217 INFO L242 Difference]: Finished difference. Result has 297 places, 216 transitions, 903 flow [2021-11-20 06:57:53,217 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1133, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=903, PETRI_PLACES=297, PETRI_TRANSITIONS=216} [2021-11-20 06:57:53,218 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 110 predicate places. [2021-11-20 06:57:53,218 INFO L470 AbstractCegarLoop]: Abstraction has has 297 places, 216 transitions, 903 flow [2021-11-20 06:57:53,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:53,219 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:53,219 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] [2021-11-20 06:57:53,219 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-20 06:57:53,219 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:53,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:53,223 INFO L85 PathProgramCache]: Analyzing trace with hash -736329916, now seen corresponding path program 14 times [2021-11-20 06:57:53,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:53,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53925441] [2021-11-20 06:57:53,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:53,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:53,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:53,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:53,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53925441] [2021-11-20 06:57:53,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53925441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:53,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:53,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:53,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436231943] [2021-11-20 06:57:53,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:53,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:53,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:53,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:53,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:53,363 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:53,374 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 216 transitions, 903 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:53,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:53,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:53,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:53,714 INFO L129 PetriNetUnfolder]: 93/809 cut-off events. [2021-11-20 06:57:53,714 INFO L130 PetriNetUnfolder]: For 1869/1872 co-relation queries the response was YES. [2021-11-20 06:57:53,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2140 conditions, 809 events. 93/809 cut-off events. For 1869/1872 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5373 event pairs, 37 based on Foata normal form. 1/774 useless extension candidates. Maximal degree in co-relation 2073. Up to 128 conditions per place. [2021-11-20 06:57:53,722 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 54 selfloop transitions, 21 changer transitions 34/265 dead transitions. [2021-11-20 06:57:53,722 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 265 transitions, 1641 flow [2021-11-20 06:57:53,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-20 06:57:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2021-11-20 06:57:53,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 3764 transitions. [2021-11-20 06:57:53,732 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8147186147186147 [2021-11-20 06:57:53,732 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 3764 transitions. [2021-11-20 06:57:53,733 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 3764 transitions. [2021-11-20 06:57:53,734 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:53,734 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 3764 transitions. [2021-11-20 06:57:53,738 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 171.0909090909091) internal successors, (3764), 22 states have internal predecessors, (3764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:53,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:53,743 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 210.0) internal successors, (4830), 23 states have internal predecessors, (4830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:53,744 INFO L186 Difference]: Start difference. First operand has 297 places, 216 transitions, 903 flow. Second operand 22 states and 3764 transitions. [2021-11-20 06:57:53,744 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 265 transitions, 1641 flow [2021-11-20 06:57:53,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 265 transitions, 1498 flow, removed 27 selfloop flow, removed 20 redundant places. [2021-11-20 06:57:53,762 INFO L242 Difference]: Finished difference. Result has 284 places, 221 transitions, 972 flow [2021-11-20 06:57:53,762 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=972, PETRI_PLACES=284, PETRI_TRANSITIONS=221} [2021-11-20 06:57:53,762 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 97 predicate places. [2021-11-20 06:57:53,763 INFO L470 AbstractCegarLoop]: Abstraction has has 284 places, 221 transitions, 972 flow [2021-11-20 06:57:53,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:53,763 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:53,764 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] [2021-11-20 06:57:53,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-20 06:57:53,768 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:53,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:53,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1579020970, now seen corresponding path program 15 times [2021-11-20 06:57:53,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:53,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970215043] [2021-11-20 06:57:53,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:53,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:53,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:53,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:53,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:53,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970215043] [2021-11-20 06:57:53,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970215043] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:53,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:53,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:53,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266884927] [2021-11-20 06:57:53,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:53,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:53,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:53,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:53,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:53,880 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:53,889 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 221 transitions, 972 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:53,889 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:53,890 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:53,890 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:54,186 INFO L129 PetriNetUnfolder]: 94/810 cut-off events. [2021-11-20 06:57:54,186 INFO L130 PetriNetUnfolder]: For 2125/2128 co-relation queries the response was YES. [2021-11-20 06:57:54,191 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2195 conditions, 810 events. 94/810 cut-off events. For 2125/2128 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 5365 event pairs, 34 based on Foata normal form. 1/774 useless extension candidates. Maximal degree in co-relation 2130. Up to 134 conditions per place. [2021-11-20 06:57:54,194 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 55 selfloop transitions, 27 changer transitions 27/265 dead transitions. [2021-11-20 06:57:54,194 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 265 transitions, 1696 flow [2021-11-20 06:57:54,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:57:54,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-20 06:57:54,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2919 transitions. [2021-11-20 06:57:54,206 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8176470588235294 [2021-11-20 06:57:54,207 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2919 transitions. [2021-11-20 06:57:54,207 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2919 transitions. [2021-11-20 06:57:54,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:54,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2919 transitions. [2021-11-20 06:57:54,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.7058823529412) internal successors, (2919), 17 states have internal predecessors, (2919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:54,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:54,215 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:54,215 INFO L186 Difference]: Start difference. First operand has 284 places, 221 transitions, 972 flow. Second operand 17 states and 2919 transitions. [2021-11-20 06:57:54,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 265 transitions, 1696 flow [2021-11-20 06:57:54,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 265 transitions, 1610 flow, removed 30 selfloop flow, removed 13 redundant places. [2021-11-20 06:57:54,234 INFO L242 Difference]: Finished difference. Result has 283 places, 229 transitions, 1145 flow [2021-11-20 06:57:54,235 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1145, PETRI_PLACES=283, PETRI_TRANSITIONS=229} [2021-11-20 06:57:54,235 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 96 predicate places. [2021-11-20 06:57:54,236 INFO L470 AbstractCegarLoop]: Abstraction has has 283 places, 229 transitions, 1145 flow [2021-11-20 06:57:54,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:54,236 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:54,237 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] [2021-11-20 06:57:54,237 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-20 06:57:54,237 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:54,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:54,237 INFO L85 PathProgramCache]: Analyzing trace with hash 606626224, now seen corresponding path program 16 times [2021-11-20 06:57:54,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:54,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677489971] [2021-11-20 06:57:54,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:54,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:54,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:54,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:54,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:54,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677489971] [2021-11-20 06:57:54,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677489971] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:54,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:54,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:54,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033165384] [2021-11-20 06:57:54,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:54,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:54,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:54,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:54,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:54,365 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:54,366 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 283 places, 229 transitions, 1145 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:54,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:54,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:54,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:54,683 INFO L129 PetriNetUnfolder]: 85/759 cut-off events. [2021-11-20 06:57:54,683 INFO L130 PetriNetUnfolder]: For 1864/1867 co-relation queries the response was YES. [2021-11-20 06:57:54,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2039 conditions, 759 events. 85/759 cut-off events. For 1864/1867 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 4826 event pairs, 36 based on Foata normal form. 1/722 useless extension candidates. Maximal degree in co-relation 1975. Up to 130 conditions per place. [2021-11-20 06:57:54,689 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 52 selfloop transitions, 12 changer transitions 33/253 dead transitions. [2021-11-20 06:57:54,689 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 253 transitions, 1561 flow [2021-11-20 06:57:54,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:57:54,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 06:57:54,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3082 transitions. [2021-11-20 06:57:54,692 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8153439153439154 [2021-11-20 06:57:54,692 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3082 transitions. [2021-11-20 06:57:54,692 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3082 transitions. [2021-11-20 06:57:54,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:54,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3082 transitions. [2021-11-20 06:57:54,694 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.22222222222223) internal successors, (3082), 18 states have internal predecessors, (3082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:54,696 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:54,697 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:54,697 INFO L186 Difference]: Start difference. First operand has 283 places, 229 transitions, 1145 flow. Second operand 18 states and 3082 transitions. [2021-11-20 06:57:54,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 253 transitions, 1561 flow [2021-11-20 06:57:54,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 283 places, 253 transitions, 1449 flow, removed 34 selfloop flow, removed 9 redundant places. [2021-11-20 06:57:54,709 INFO L242 Difference]: Finished difference. Result has 290 places, 214 transitions, 898 flow [2021-11-20 06:57:54,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1052, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=898, PETRI_PLACES=290, PETRI_TRANSITIONS=214} [2021-11-20 06:57:54,710 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 103 predicate places. [2021-11-20 06:57:54,710 INFO L470 AbstractCegarLoop]: Abstraction has has 290 places, 214 transitions, 898 flow [2021-11-20 06:57:54,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:54,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:54,711 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] [2021-11-20 06:57:54,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-20 06:57:54,712 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:54,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:54,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1561129080, now seen corresponding path program 17 times [2021-11-20 06:57:54,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:54,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760049064] [2021-11-20 06:57:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:54,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:54,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:54,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760049064] [2021-11-20 06:57:54,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760049064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:54,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:54,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:54,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897665757] [2021-11-20 06:57:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:54,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:54,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:54,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:54,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:54,821 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:54,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 290 places, 214 transitions, 898 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:54,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:54,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:54,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:55,164 INFO L129 PetriNetUnfolder]: 85/751 cut-off events. [2021-11-20 06:57:55,164 INFO L130 PetriNetUnfolder]: For 1912/1917 co-relation queries the response was YES. [2021-11-20 06:57:55,169 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1998 conditions, 751 events. 85/751 cut-off events. For 1912/1917 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 4746 event pairs, 36 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 1933. Up to 120 conditions per place. [2021-11-20 06:57:55,171 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 48 selfloop transitions, 19 changer transitions 34/257 dead transitions. [2021-11-20 06:57:55,171 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 287 places, 257 transitions, 1654 flow [2021-11-20 06:57:55,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-11-20 06:57:55,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2021-11-20 06:57:55,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 3593 transitions. [2021-11-20 06:57:55,173 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8147392290249433 [2021-11-20 06:57:55,174 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 3593 transitions. [2021-11-20 06:57:55,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 3593 transitions. [2021-11-20 06:57:55,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:55,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 3593 transitions. [2021-11-20 06:57:55,179 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 171.0952380952381) internal successors, (3593), 21 states have internal predecessors, (3593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:55,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:55,184 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 210.0) internal successors, (4620), 22 states have internal predecessors, (4620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:55,184 INFO L186 Difference]: Start difference. First operand has 290 places, 214 transitions, 898 flow. Second operand 21 states and 3593 transitions. [2021-11-20 06:57:55,185 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 287 places, 257 transitions, 1654 flow [2021-11-20 06:57:55,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 257 transitions, 1460 flow, removed 59 selfloop flow, removed 19 redundant places. [2021-11-20 06:57:55,202 INFO L242 Difference]: Finished difference. Result has 282 places, 218 transitions, 972 flow [2021-11-20 06:57:55,202 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=820, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=972, PETRI_PLACES=282, PETRI_TRANSITIONS=218} [2021-11-20 06:57:55,203 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 95 predicate places. [2021-11-20 06:57:55,203 INFO L470 AbstractCegarLoop]: Abstraction has has 282 places, 218 transitions, 972 flow [2021-11-20 06:57:55,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:55,204 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:55,204 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] [2021-11-20 06:57:55,204 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-20 06:57:55,204 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:55,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:55,205 INFO L85 PathProgramCache]: Analyzing trace with hash 700856562, now seen corresponding path program 18 times [2021-11-20 06:57:55,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:55,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586364392] [2021-11-20 06:57:55,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:55,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:55,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:55,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:55,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:55,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586364392] [2021-11-20 06:57:55,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586364392] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:55,319 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:55,319 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:55,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243560242] [2021-11-20 06:57:55,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:55,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:55,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:55,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:55,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:55,322 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:55,324 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 218 transitions, 972 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:55,324 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:55,324 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:55,324 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:55,617 INFO L129 PetriNetUnfolder]: 78/711 cut-off events. [2021-11-20 06:57:55,617 INFO L130 PetriNetUnfolder]: For 1654/1659 co-relation queries the response was YES. [2021-11-20 06:57:55,622 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1842 conditions, 711 events. 78/711 cut-off events. For 1654/1659 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 4403 event pairs, 34 based on Foata normal form. 2/675 useless extension candidates. Maximal degree in co-relation 1777. Up to 125 conditions per place. [2021-11-20 06:57:55,623 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 45 selfloop transitions, 12 changer transitions 32/245 dead transitions. [2021-11-20 06:57:55,623 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 245 transitions, 1381 flow [2021-11-20 06:57:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:57:55,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 06:57:55,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3083 transitions. [2021-11-20 06:57:55,628 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8156084656084656 [2021-11-20 06:57:55,628 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3083 transitions. [2021-11-20 06:57:55,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3083 transitions. [2021-11-20 06:57:55,628 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:55,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3083 transitions. [2021-11-20 06:57:55,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 171.27777777777777) internal successors, (3083), 18 states have internal predecessors, (3083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:55,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:55,633 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:55,633 INFO L186 Difference]: Start difference. First operand has 282 places, 218 transitions, 972 flow. Second operand 18 states and 3083 transitions. [2021-11-20 06:57:55,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 245 transitions, 1381 flow [2021-11-20 06:57:55,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 245 transitions, 1302 flow, removed 25 selfloop flow, removed 15 redundant places. [2021-11-20 06:57:55,646 INFO L242 Difference]: Finished difference. Result has 279 places, 210 transitions, 850 flow [2021-11-20 06:57:55,647 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=917, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=850, PETRI_PLACES=279, PETRI_TRANSITIONS=210} [2021-11-20 06:57:55,647 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 92 predicate places. [2021-11-20 06:57:55,647 INFO L470 AbstractCegarLoop]: Abstraction has has 279 places, 210 transitions, 850 flow [2021-11-20 06:57:55,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:55,648 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:55,648 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] [2021-11-20 06:57:55,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-20 06:57:55,648 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:55,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:55,649 INFO L85 PathProgramCache]: Analyzing trace with hash 573347122, now seen corresponding path program 19 times [2021-11-20 06:57:55,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:55,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632760491] [2021-11-20 06:57:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:55,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:55,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:55,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:55,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:55,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632760491] [2021-11-20 06:57:55,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632760491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:55,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:55,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:55,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894375158] [2021-11-20 06:57:55,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:55,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:55,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:55,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:55,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:55,784 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:55,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 210 transitions, 850 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:55,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:55,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:55,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:56,098 INFO L129 PetriNetUnfolder]: 74/690 cut-off events. [2021-11-20 06:57:56,098 INFO L130 PetriNetUnfolder]: For 1368/1371 co-relation queries the response was YES. [2021-11-20 06:57:56,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 690 events. 74/690 cut-off events. For 1368/1371 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 4211 event pairs, 33 based on Foata normal form. 1/652 useless extension candidates. Maximal degree in co-relation 1662. Up to 126 conditions per place. [2021-11-20 06:57:56,104 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 40 selfloop transitions, 17 changer transitions 32/245 dead transitions. [2021-11-20 06:57:56,104 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 245 transitions, 1417 flow [2021-11-20 06:57:56,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-20 06:57:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2021-11-20 06:57:56,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2917 transitions. [2021-11-20 06:57:56,106 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8170868347338935 [2021-11-20 06:57:56,106 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2917 transitions. [2021-11-20 06:57:56,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2917 transitions. [2021-11-20 06:57:56,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:56,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2917 transitions. [2021-11-20 06:57:56,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 171.58823529411765) internal successors, (2917), 17 states have internal predecessors, (2917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:56,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:56,113 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 210.0) internal successors, (3780), 18 states have internal predecessors, (3780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:56,113 INFO L186 Difference]: Start difference. First operand has 279 places, 210 transitions, 850 flow. Second operand 17 states and 2917 transitions. [2021-11-20 06:57:56,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 245 transitions, 1417 flow [2021-11-20 06:57:56,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 245 transitions, 1290 flow, removed 38 selfloop flow, removed 17 redundant places. [2021-11-20 06:57:56,128 INFO L242 Difference]: Finished difference. Result has 269 places, 211 transitions, 877 flow [2021-11-20 06:57:56,129 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=792, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=877, PETRI_PLACES=269, PETRI_TRANSITIONS=211} [2021-11-20 06:57:56,129 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 82 predicate places. [2021-11-20 06:57:56,130 INFO L470 AbstractCegarLoop]: Abstraction has has 269 places, 211 transitions, 877 flow [2021-11-20 06:57:56,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:56,130 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:56,130 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] [2021-11-20 06:57:56,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-20 06:57:56,131 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:56,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:56,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1433308642, now seen corresponding path program 20 times [2021-11-20 06:57:56,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:56,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396358276] [2021-11-20 06:57:56,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:56,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:56,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:56,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:56,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396358276] [2021-11-20 06:57:56,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396358276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:56,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:56,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-20 06:57:56,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179807784] [2021-11-20 06:57:56,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:56,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 06:57:56,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:56,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 06:57:56,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-20 06:57:56,269 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 210 [2021-11-20 06:57:56,270 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 211 transitions, 877 flow. Second operand has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:56,270 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:56,270 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 210 [2021-11-20 06:57:56,270 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:56,550 INFO L129 PetriNetUnfolder]: 62/591 cut-off events. [2021-11-20 06:57:56,551 INFO L130 PetriNetUnfolder]: For 911/914 co-relation queries the response was YES. [2021-11-20 06:57:56,554 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 591 events. 62/591 cut-off events. For 911/914 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 3367 event pairs, 32 based on Foata normal form. 1/556 useless extension candidates. Maximal degree in co-relation 1318. Up to 103 conditions per place. [2021-11-20 06:57:56,555 INFO L132 encePairwiseOnDemand]: 197/210 looper letters, 29 selfloop transitions, 0 changer transitions 43/222 dead transitions. [2021-11-20 06:57:56,555 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 222 transitions, 1049 flow [2021-11-20 06:57:56,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-20 06:57:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2021-11-20 06:57:56,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 3071 transitions. [2021-11-20 06:57:56,557 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8124338624338624 [2021-11-20 06:57:56,557 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 3071 transitions. [2021-11-20 06:57:56,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 3071 transitions. [2021-11-20 06:57:56,558 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:56,558 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 3071 transitions. [2021-11-20 06:57:56,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 170.61111111111111) internal successors, (3071), 18 states have internal predecessors, (3071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:56,581 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:56,582 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 210.0) internal successors, (3990), 19 states have internal predecessors, (3990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:56,582 INFO L186 Difference]: Start difference. First operand has 269 places, 211 transitions, 877 flow. Second operand 18 states and 3071 transitions. [2021-11-20 06:57:56,582 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 222 transitions, 1049 flow [2021-11-20 06:57:56,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 222 transitions, 939 flow, removed 35 selfloop flow, removed 12 redundant places. [2021-11-20 06:57:56,590 INFO L242 Difference]: Finished difference. Result has 269 places, 179 transitions, 468 flow [2021-11-20 06:57:56,591 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=468, PETRI_PLACES=269, PETRI_TRANSITIONS=179} [2021-11-20 06:57:56,591 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 82 predicate places. [2021-11-20 06:57:56,592 INFO L470 AbstractCegarLoop]: Abstraction has has 269 places, 179 transitions, 468 flow [2021-11-20 06:57:56,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 169.8) internal successors, (1698), 10 states have internal predecessors, (1698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:56,592 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:56,592 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:57:56,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-20 06:57:56,593 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:56,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:56,594 INFO L85 PathProgramCache]: Analyzing trace with hash 105124182, now seen corresponding path program 1 times [2021-11-20 06:57:56,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:56,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223895717] [2021-11-20 06:57:56,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:56,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:56,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:56,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:56,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223895717] [2021-11-20 06:57:56,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223895717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:56,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:56,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:57:56,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716912514] [2021-11-20 06:57:56,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:56,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:57:56,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:56,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:57:56,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:57:56,754 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:57:56,755 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 179 transitions, 468 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:56,756 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:56,756 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:57:56,756 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:57,502 INFO L129 PetriNetUnfolder]: 327/1114 cut-off events. [2021-11-20 06:57:57,502 INFO L130 PetriNetUnfolder]: For 1981/1982 co-relation queries the response was YES. [2021-11-20 06:57:57,508 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2873 conditions, 1114 events. 327/1114 cut-off events. For 1981/1982 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 7175 event pairs, 99 based on Foata normal form. 1/1067 useless extension candidates. Maximal degree in co-relation 2822. Up to 307 conditions per place. [2021-11-20 06:57:57,511 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 113 selfloop transitions, 28 changer transitions 56/334 dead transitions. [2021-11-20 06:57:57,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 334 transitions, 1777 flow [2021-11-20 06:57:57,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 06:57:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 06:57:57,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2021-11-20 06:57:57,514 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2021-11-20 06:57:57,515 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2021-11-20 06:57:57,515 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2021-11-20 06:57:57,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:57,516 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2021-11-20 06:57:57,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:57,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:57,525 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:57,525 INFO L186 Difference]: Start difference. First operand has 269 places, 179 transitions, 468 flow. Second operand 38 states and 6077 transitions. [2021-11-20 06:57:57,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 334 transitions, 1777 flow [2021-11-20 06:57:57,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 334 transitions, 1623 flow, removed 77 selfloop flow, removed 11 redundant places. [2021-11-20 06:57:57,534 INFO L242 Difference]: Finished difference. Result has 276 places, 210 transitions, 810 flow [2021-11-20 06:57:57,534 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=810, PETRI_PLACES=276, PETRI_TRANSITIONS=210} [2021-11-20 06:57:57,534 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 89 predicate places. [2021-11-20 06:57:57,534 INFO L470 AbstractCegarLoop]: Abstraction has has 276 places, 210 transitions, 810 flow [2021-11-20 06:57:57,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:57,535 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:57,535 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] [2021-11-20 06:57:57,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-20 06:57:57,535 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:57,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:57,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1170278634, now seen corresponding path program 2 times [2021-11-20 06:57:57,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:57,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178904584] [2021-11-20 06:57:57,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:57,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:57,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:57,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:57,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:57,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178904584] [2021-11-20 06:57:57,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178904584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:57,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:57,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:57:57,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200383061] [2021-11-20 06:57:57,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:57,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:57:57,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:57,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:57:57,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:57:57,699 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:57:57,700 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 210 transitions, 810 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:57,701 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:57,701 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:57:57,701 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:58,297 INFO L129 PetriNetUnfolder]: 504/1512 cut-off events. [2021-11-20 06:57:58,297 INFO L130 PetriNetUnfolder]: For 7265/7265 co-relation queries the response was YES. [2021-11-20 06:57:58,308 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5661 conditions, 1512 events. 504/1512 cut-off events. For 7265/7265 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 10484 event pairs, 166 based on Foata normal form. 1/1436 useless extension candidates. Maximal degree in co-relation 5593. Up to 495 conditions per place. [2021-11-20 06:57:58,313 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 153 selfloop transitions, 41 changer transitions 48/379 dead transitions. [2021-11-20 06:57:58,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 379 transitions, 2724 flow [2021-11-20 06:57:58,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 06:57:58,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-20 06:57:58,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4191 transitions. [2021-11-20 06:57:58,316 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7675824175824176 [2021-11-20 06:57:58,316 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4191 transitions. [2021-11-20 06:57:58,316 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4191 transitions. [2021-11-20 06:57:58,317 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:58,317 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4191 transitions. [2021-11-20 06:57:58,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 161.19230769230768) internal successors, (4191), 26 states have internal predecessors, (4191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:58,322 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:58,323 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:58,323 INFO L186 Difference]: Start difference. First operand has 276 places, 210 transitions, 810 flow. Second operand 26 states and 4191 transitions. [2021-11-20 06:57:58,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 379 transitions, 2724 flow [2021-11-20 06:57:58,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 379 transitions, 2312 flow, removed 206 selfloop flow, removed 16 redundant places. [2021-11-20 06:57:58,344 INFO L242 Difference]: Finished difference. Result has 284 places, 239 transitions, 1161 flow [2021-11-20 06:57:58,344 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=698, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1161, PETRI_PLACES=284, PETRI_TRANSITIONS=239} [2021-11-20 06:57:58,344 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 97 predicate places. [2021-11-20 06:57:58,345 INFO L470 AbstractCegarLoop]: Abstraction has has 284 places, 239 transitions, 1161 flow [2021-11-20 06:57:58,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:58,345 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:58,345 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] [2021-11-20 06:57:58,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-20 06:57:58,346 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:58,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:58,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1345994234, now seen corresponding path program 3 times [2021-11-20 06:57:58,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:58,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416522558] [2021-11-20 06:57:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:58,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:58,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:58,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:58,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:58,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416522558] [2021-11-20 06:57:58,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416522558] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:58,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:58,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:57:58,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335000095] [2021-11-20 06:57:58,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:58,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:57:58,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:58,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:57:58,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:57:58,517 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:57:58,519 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 284 places, 239 transitions, 1161 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:58,519 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:58,519 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:57:58,519 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:57:59,746 INFO L129 PetriNetUnfolder]: 538/1718 cut-off events. [2021-11-20 06:57:59,746 INFO L130 PetriNetUnfolder]: For 7737/7741 co-relation queries the response was YES. [2021-11-20 06:57:59,760 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6609 conditions, 1718 events. 538/1718 cut-off events. For 7737/7741 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 12794 event pairs, 186 based on Foata normal form. 5/1647 useless extension candidates. Maximal degree in co-relation 6533. Up to 490 conditions per place. [2021-11-20 06:57:59,766 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 252 selfloop transitions, 28 changer transitions 94/511 dead transitions. [2021-11-20 06:57:59,766 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 511 transitions, 4269 flow [2021-11-20 06:57:59,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-20 06:57:59,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-11-20 06:57:59,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9250 transitions. [2021-11-20 06:57:59,770 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7594417077175698 [2021-11-20 06:57:59,770 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9250 transitions. [2021-11-20 06:57:59,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9250 transitions. [2021-11-20 06:57:59,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:57:59,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9250 transitions. [2021-11-20 06:57:59,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.48275862068965) internal successors, (9250), 58 states have internal predecessors, (9250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:59,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:59,787 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:59,787 INFO L186 Difference]: Start difference. First operand has 284 places, 239 transitions, 1161 flow. Second operand 58 states and 9250 transitions. [2021-11-20 06:57:59,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 511 transitions, 4269 flow [2021-11-20 06:57:59,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 511 transitions, 3937 flow, removed 165 selfloop flow, removed 11 redundant places. [2021-11-20 06:57:59,821 INFO L242 Difference]: Finished difference. Result has 368 places, 241 transitions, 1250 flow [2021-11-20 06:57:59,821 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1033, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=1250, PETRI_PLACES=368, PETRI_TRANSITIONS=241} [2021-11-20 06:57:59,821 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 181 predicate places. [2021-11-20 06:57:59,822 INFO L470 AbstractCegarLoop]: Abstraction has has 368 places, 241 transitions, 1250 flow [2021-11-20 06:57:59,822 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:59,822 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:57:59,822 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] [2021-11-20 06:57:59,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-20 06:57:59,822 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:57:59,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:57:59,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1216258016, now seen corresponding path program 4 times [2021-11-20 06:57:59,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:57:59,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816025097] [2021-11-20 06:57:59,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:57:59,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:57:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:57:59,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:57:59,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:57:59,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816025097] [2021-11-20 06:57:59,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816025097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:57:59,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:57:59,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:57:59,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511390585] [2021-11-20 06:57:59,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:57:59,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:57:59,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:57:59,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:57:59,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:57:59,988 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:57:59,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 241 transitions, 1250 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:57:59,990 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:57:59,990 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:57:59,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:01,030 INFO L129 PetriNetUnfolder]: 565/1712 cut-off events. [2021-11-20 06:58:01,030 INFO L130 PetriNetUnfolder]: For 16944/16944 co-relation queries the response was YES. [2021-11-20 06:58:01,046 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8354 conditions, 1712 events. 565/1712 cut-off events. For 16944/16944 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 12443 event pairs, 196 based on Foata normal form. 1/1626 useless extension candidates. Maximal degree in co-relation 8239. Up to 541 conditions per place. [2021-11-20 06:58:01,052 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 170 selfloop transitions, 48 changer transitions 47/402 dead transitions. [2021-11-20 06:58:01,052 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 402 transitions, 3738 flow [2021-11-20 06:58:01,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 06:58:01,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-20 06:58:01,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4354 transitions. [2021-11-20 06:58:01,055 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7679012345679013 [2021-11-20 06:58:01,055 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4354 transitions. [2021-11-20 06:58:01,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4354 transitions. [2021-11-20 06:58:01,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:01,057 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4354 transitions. [2021-11-20 06:58:01,061 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 161.25925925925927) internal successors, (4354), 27 states have internal predecessors, (4354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:01,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:01,067 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:01,068 INFO L186 Difference]: Start difference. First operand has 368 places, 241 transitions, 1250 flow. Second operand 27 states and 4354 transitions. [2021-11-20 06:58:01,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 402 transitions, 3738 flow [2021-11-20 06:58:01,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 402 transitions, 3377 flow, removed 178 selfloop flow, removed 44 redundant places. [2021-11-20 06:58:01,112 INFO L242 Difference]: Finished difference. Result has 322 places, 266 transitions, 1684 flow [2021-11-20 06:58:01,112 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=277, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1684, PETRI_PLACES=322, PETRI_TRANSITIONS=266} [2021-11-20 06:58:01,113 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 135 predicate places. [2021-11-20 06:58:01,113 INFO L470 AbstractCegarLoop]: Abstraction has has 322 places, 266 transitions, 1684 flow [2021-11-20 06:58:01,113 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:01,113 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:01,113 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] [2021-11-20 06:58:01,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-20 06:58:01,114 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:01,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:01,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1779093400, now seen corresponding path program 1 times [2021-11-20 06:58:01,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:01,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903983987] [2021-11-20 06:58:01,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:01,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:01,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:01,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:01,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:01,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903983987] [2021-11-20 06:58:01,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903983987] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:01,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:01,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:58:01,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153306883] [2021-11-20 06:58:01,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:01,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:58:01,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:01,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:58:01,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:58:01,136 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-11-20 06:58:01,137 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 266 transitions, 1684 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:01,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:01,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-11-20 06:58:01,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:01,372 INFO L129 PetriNetUnfolder]: 255/1433 cut-off events. [2021-11-20 06:58:01,372 INFO L130 PetriNetUnfolder]: For 9544/9625 co-relation queries the response was YES. [2021-11-20 06:58:01,386 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5267 conditions, 1433 events. 255/1433 cut-off events. For 9544/9625 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10441 event pairs, 102 based on Foata normal form. 6/1352 useless extension candidates. Maximal degree in co-relation 5176. Up to 136 conditions per place. [2021-11-20 06:58:01,390 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 15 selfloop transitions, 3 changer transitions 0/272 dead transitions. [2021-11-20 06:58:01,390 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 272 transitions, 1735 flow [2021-11-20 06:58:01,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:58:01,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:58:01,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2021-11-20 06:58:01,391 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2021-11-20 06:58:01,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2021-11-20 06:58:01,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2021-11-20 06:58:01,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:01,391 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2021-11-20 06:58:01,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:01,392 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:01,392 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:01,392 INFO L186 Difference]: Start difference. First operand has 322 places, 266 transitions, 1684 flow. Second operand 3 states and 591 transitions. [2021-11-20 06:58:01,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 272 transitions, 1735 flow [2021-11-20 06:58:01,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 272 transitions, 1576 flow, removed 62 selfloop flow, removed 12 redundant places. [2021-11-20 06:58:01,426 INFO L242 Difference]: Finished difference. Result has 302 places, 269 transitions, 1555 flow [2021-11-20 06:58:01,426 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1525, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=263, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1555, PETRI_PLACES=302, PETRI_TRANSITIONS=269} [2021-11-20 06:58:01,427 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 115 predicate places. [2021-11-20 06:58:01,427 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 269 transitions, 1555 flow [2021-11-20 06:58:01,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:01,427 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:01,428 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] [2021-11-20 06:58:01,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-20 06:58:01,428 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:01,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash 572958224, now seen corresponding path program 5 times [2021-11-20 06:58:01,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:01,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829951104] [2021-11-20 06:58:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:01,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:01,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:01,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:01,582 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:01,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829951104] [2021-11-20 06:58:01,582 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829951104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:01,582 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:01,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:01,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767246479] [2021-11-20 06:58:01,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:01,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:01,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:01,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:01,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:01,586 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:01,587 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 269 transitions, 1555 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:01,588 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:01,588 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:01,588 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:02,830 INFO L129 PetriNetUnfolder]: 918/2807 cut-off events. [2021-11-20 06:58:02,830 INFO L130 PetriNetUnfolder]: For 20836/20836 co-relation queries the response was YES. [2021-11-20 06:58:02,861 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12549 conditions, 2807 events. 918/2807 cut-off events. For 20836/20836 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 21557 event pairs, 361 based on Foata normal form. 1/2680 useless extension candidates. Maximal degree in co-relation 12466. Up to 1064 conditions per place. [2021-11-20 06:58:02,872 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 205 selfloop transitions, 47 changer transitions 70/462 dead transitions. [2021-11-20 06:58:02,872 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 462 transitions, 4672 flow [2021-11-20 06:58:02,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-20 06:58:02,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-11-20 06:58:02,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6711 transitions. [2021-11-20 06:58:02,876 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7608843537414965 [2021-11-20 06:58:02,876 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6711 transitions. [2021-11-20 06:58:02,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6711 transitions. [2021-11-20 06:58:02,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:02,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6711 transitions. [2021-11-20 06:58:02,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.78571428571428) internal successors, (6711), 42 states have internal predecessors, (6711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:02,886 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:02,888 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:02,888 INFO L186 Difference]: Start difference. First operand has 302 places, 269 transitions, 1555 flow. Second operand 42 states and 6711 transitions. [2021-11-20 06:58:02,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 462 transitions, 4672 flow [2021-11-20 06:58:02,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 462 transitions, 4669 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-20 06:58:02,952 INFO L242 Difference]: Finished difference. Result has 379 places, 288 transitions, 2056 flow [2021-11-20 06:58:02,953 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=301, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=269, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=2056, PETRI_PLACES=379, PETRI_TRANSITIONS=288} [2021-11-20 06:58:02,953 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 192 predicate places. [2021-11-20 06:58:02,953 INFO L470 AbstractCegarLoop]: Abstraction has has 379 places, 288 transitions, 2056 flow [2021-11-20 06:58:02,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:02,954 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:02,954 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] [2021-11-20 06:58:02,954 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-20 06:58:02,954 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:02,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:02,954 INFO L85 PathProgramCache]: Analyzing trace with hash 3618918, now seen corresponding path program 1 times [2021-11-20 06:58:02,955 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:02,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896952485] [2021-11-20 06:58:02,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:02,955 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:02,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:02,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:02,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:02,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896952485] [2021-11-20 06:58:02,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896952485] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:02,979 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:02,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:58:02,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973695644] [2021-11-20 06:58:02,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:02,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:58:02,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:02,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:58:02,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:58:02,982 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-11-20 06:58:02,983 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 288 transitions, 2056 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:02,983 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:02,983 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-11-20 06:58:02,983 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:03,272 INFO L129 PetriNetUnfolder]: 240/1365 cut-off events. [2021-11-20 06:58:03,272 INFO L130 PetriNetUnfolder]: For 16326/16427 co-relation queries the response was YES. [2021-11-20 06:58:03,289 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6019 conditions, 1365 events. 240/1365 cut-off events. For 16326/16427 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 9430 event pairs, 94 based on Foata normal form. 7/1304 useless extension candidates. Maximal degree in co-relation 5899. Up to 113 conditions per place. [2021-11-20 06:58:03,294 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 16 selfloop transitions, 5 changer transitions 0/294 dead transitions. [2021-11-20 06:58:03,294 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 294 transitions, 2119 flow [2021-11-20 06:58:03,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:58:03,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:58:03,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2021-11-20 06:58:03,297 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2021-11-20 06:58:03,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2021-11-20 06:58:03,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2021-11-20 06:58:03,297 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:03,297 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2021-11-20 06:58:03,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:03,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:03,298 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:03,298 INFO L186 Difference]: Start difference. First operand has 379 places, 288 transitions, 2056 flow. Second operand 3 states and 591 transitions. [2021-11-20 06:58:03,298 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 294 transitions, 2119 flow [2021-11-20 06:58:03,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 294 transitions, 2000 flow, removed 49 selfloop flow, removed 24 redundant places. [2021-11-20 06:58:03,354 INFO L242 Difference]: Finished difference. Result has 330 places, 291 transitions, 1981 flow [2021-11-20 06:58:03,354 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=283, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1981, PETRI_PLACES=330, PETRI_TRANSITIONS=291} [2021-11-20 06:58:03,354 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 143 predicate places. [2021-11-20 06:58:03,354 INFO L470 AbstractCegarLoop]: Abstraction has has 330 places, 291 transitions, 1981 flow [2021-11-20 06:58:03,355 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:03,355 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:03,355 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:58:03,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-20 06:58:03,355 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:03,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:03,355 INFO L85 PathProgramCache]: Analyzing trace with hash -2058948806, now seen corresponding path program 1 times [2021-11-20 06:58:03,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:03,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887497501] [2021-11-20 06:58:03,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:03,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:03,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:03,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:03,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:03,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887497501] [2021-11-20 06:58:03,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887497501] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:03,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:03,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:03,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433395809] [2021-11-20 06:58:03,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:03,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:03,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:03,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:03,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:03,485 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:03,486 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 291 transitions, 1981 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:03,486 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:03,486 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:03,486 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:04,756 INFO L129 PetriNetUnfolder]: 857/2807 cut-off events. [2021-11-20 06:58:04,756 INFO L130 PetriNetUnfolder]: For 22286/22326 co-relation queries the response was YES. [2021-11-20 06:58:04,813 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12242 conditions, 2807 events. 857/2807 cut-off events. For 22286/22326 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 21671 event pairs, 252 based on Foata normal form. 6/2707 useless extension candidates. Maximal degree in co-relation 12143. Up to 850 conditions per place. [2021-11-20 06:58:04,825 INFO L132 encePairwiseOnDemand]: 187/210 looper letters, 242 selfloop transitions, 55 changer transitions 98/548 dead transitions. [2021-11-20 06:58:04,825 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 548 transitions, 4645 flow [2021-11-20 06:58:04,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 06:58:04,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-11-20 06:58:04,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5513 transitions. [2021-11-20 06:58:04,830 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7721288515406163 [2021-11-20 06:58:04,830 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5513 transitions. [2021-11-20 06:58:04,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5513 transitions. [2021-11-20 06:58:04,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:04,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5513 transitions. [2021-11-20 06:58:04,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 162.14705882352942) internal successors, (5513), 34 states have internal predecessors, (5513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:04,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:04,844 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:04,844 INFO L186 Difference]: Start difference. First operand has 330 places, 291 transitions, 1981 flow. Second operand 34 states and 5513 transitions. [2021-11-20 06:58:04,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 548 transitions, 4645 flow [2021-11-20 06:58:04,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 548 transitions, 4629 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-11-20 06:58:04,936 INFO L242 Difference]: Finished difference. Result has 391 places, 335 transitions, 2666 flow [2021-11-20 06:58:04,936 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=1965, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=2666, PETRI_PLACES=391, PETRI_TRANSITIONS=335} [2021-11-20 06:58:04,937 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 204 predicate places. [2021-11-20 06:58:04,937 INFO L470 AbstractCegarLoop]: Abstraction has has 391 places, 335 transitions, 2666 flow [2021-11-20 06:58:04,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:04,938 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:04,938 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:58:04,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-20 06:58:04,939 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:04,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:04,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1411943334, now seen corresponding path program 1 times [2021-11-20 06:58:04,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:04,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543178574] [2021-11-20 06:58:04,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:04,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:04,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:04,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:04,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543178574] [2021-11-20 06:58:04,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543178574] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:04,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:04,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:58:04,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997449688] [2021-11-20 06:58:04,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:04,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:58:04,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:04,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:58:04,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:58:04,968 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-11-20 06:58:04,968 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 335 transitions, 2666 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:04,968 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:04,969 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-11-20 06:58:04,969 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:05,419 INFO L129 PetriNetUnfolder]: 306/1934 cut-off events. [2021-11-20 06:58:05,420 INFO L130 PetriNetUnfolder]: For 20600/20839 co-relation queries the response was YES. [2021-11-20 06:58:05,446 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8601 conditions, 1934 events. 306/1934 cut-off events. For 20600/20839 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 15574 event pairs, 133 based on Foata normal form. 49/1898 useless extension candidates. Maximal degree in co-relation 8472. Up to 184 conditions per place. [2021-11-20 06:58:05,452 INFO L132 encePairwiseOnDemand]: 202/210 looper letters, 13 selfloop transitions, 5 changer transitions 2/341 dead transitions. [2021-11-20 06:58:05,452 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 341 transitions, 2717 flow [2021-11-20 06:58:05,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:58:05,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:58:05,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2021-11-20 06:58:05,453 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2021-11-20 06:58:05,453 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2021-11-20 06:58:05,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2021-11-20 06:58:05,454 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:05,454 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2021-11-20 06:58:05,454 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:05,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:05,455 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:05,455 INFO L186 Difference]: Start difference. First operand has 391 places, 335 transitions, 2666 flow. Second operand 3 states and 591 transitions. [2021-11-20 06:58:05,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 341 transitions, 2717 flow [2021-11-20 06:58:05,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 341 transitions, 2469 flow, removed 124 selfloop flow, removed 6 redundant places. [2021-11-20 06:58:05,551 INFO L242 Difference]: Finished difference. Result has 371 places, 336 transitions, 2452 flow [2021-11-20 06:58:05,552 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2418, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2452, PETRI_PLACES=371, PETRI_TRANSITIONS=336} [2021-11-20 06:58:05,552 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 184 predicate places. [2021-11-20 06:58:05,552 INFO L470 AbstractCegarLoop]: Abstraction has has 371 places, 336 transitions, 2452 flow [2021-11-20 06:58:05,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:05,553 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:05,553 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] [2021-11-20 06:58:05,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-20 06:58:05,553 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:05,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:05,553 INFO L85 PathProgramCache]: Analyzing trace with hash 403277614, now seen corresponding path program 2 times [2021-11-20 06:58:05,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:05,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746867244] [2021-11-20 06:58:05,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:05,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:05,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:05,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:05,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:05,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746867244] [2021-11-20 06:58:05,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746867244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:05,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:05,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-20 06:58:05,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757610999] [2021-11-20 06:58:05,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:05,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 06:58:05,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:05,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 06:58:05,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-20 06:58:05,589 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 190 out of 210 [2021-11-20 06:58:05,589 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 336 transitions, 2452 flow. Second operand has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:05,590 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:05,590 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 190 of 210 [2021-11-20 06:58:05,590 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:05,903 INFO L129 PetriNetUnfolder]: 225/1545 cut-off events. [2021-11-20 06:58:05,904 INFO L130 PetriNetUnfolder]: For 13271/13324 co-relation queries the response was YES. [2021-11-20 06:58:05,922 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6609 conditions, 1545 events. 225/1545 cut-off events. For 13271/13324 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 11580 event pairs, 105 based on Foata normal form. 14/1505 useless extension candidates. Maximal degree in co-relation 6484. Up to 135 conditions per place. [2021-11-20 06:58:05,926 INFO L132 encePairwiseOnDemand]: 204/210 looper letters, 17 selfloop transitions, 2 changer transitions 12/309 dead transitions. [2021-11-20 06:58:05,926 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 309 transitions, 2261 flow [2021-11-20 06:58:05,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 06:58:05,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-20 06:58:05,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2021-11-20 06:58:05,927 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9380952380952381 [2021-11-20 06:58:05,927 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2021-11-20 06:58:05,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2021-11-20 06:58:05,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:05,928 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2021-11-20 06:58:05,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:05,929 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:05,929 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 210.0) internal successors, (840), 4 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:05,929 INFO L186 Difference]: Start difference. First operand has 371 places, 336 transitions, 2452 flow. Second operand 3 states and 591 transitions. [2021-11-20 06:58:05,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 309 transitions, 2261 flow [2021-11-20 06:58:05,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 309 transitions, 2215 flow, removed 3 selfloop flow, removed 9 redundant places. [2021-11-20 06:58:05,996 INFO L242 Difference]: Finished difference. Result has 360 places, 294 transitions, 2121 flow [2021-11-20 06:58:05,996 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2152, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=301, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2121, PETRI_PLACES=360, PETRI_TRANSITIONS=294} [2021-11-20 06:58:05,996 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 173 predicate places. [2021-11-20 06:58:05,996 INFO L470 AbstractCegarLoop]: Abstraction has has 360 places, 294 transitions, 2121 flow [2021-11-20 06:58:05,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:05,997 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:05,997 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:58:05,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-20 06:58:05,997 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:05,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:05,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1019898054, now seen corresponding path program 1 times [2021-11-20 06:58:05,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:05,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146487619] [2021-11-20 06:58:05,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:05,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:06,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:06,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:06,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:06,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146487619] [2021-11-20 06:58:06,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146487619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:06,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:06,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:06,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858112844] [2021-11-20 06:58:06,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:06,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:06,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:06,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:06,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:06,154 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:06,155 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 294 transitions, 2121 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:06,155 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:06,156 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:06,156 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:07,636 INFO L129 PetriNetUnfolder]: 509/2064 cut-off events. [2021-11-20 06:58:07,637 INFO L130 PetriNetUnfolder]: For 21101/21126 co-relation queries the response was YES. [2021-11-20 06:58:07,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10064 conditions, 2064 events. 509/2064 cut-off events. For 21101/21126 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 15109 event pairs, 221 based on Foata normal form. 3/2019 useless extension candidates. Maximal degree in co-relation 9944. Up to 893 conditions per place. [2021-11-20 06:58:07,739 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 228 selfloop transitions, 10 changer transitions 103/499 dead transitions. [2021-11-20 06:58:07,739 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 499 transitions, 4803 flow [2021-11-20 06:58:07,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-20 06:58:07,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-11-20 06:58:07,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9234 transitions. [2021-11-20 06:58:07,744 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.758128078817734 [2021-11-20 06:58:07,744 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9234 transitions. [2021-11-20 06:58:07,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9234 transitions. [2021-11-20 06:58:07,746 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:07,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9234 transitions. [2021-11-20 06:58:07,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.20689655172413) internal successors, (9234), 58 states have internal predecessors, (9234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:07,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:07,761 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:07,761 INFO L186 Difference]: Start difference. First operand has 360 places, 294 transitions, 2121 flow. Second operand 58 states and 9234 transitions. [2021-11-20 06:58:07,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 499 transitions, 4803 flow [2021-11-20 06:58:07,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 499 transitions, 4785 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-11-20 06:58:07,841 INFO L242 Difference]: Finished difference. Result has 463 places, 302 transitions, 2407 flow [2021-11-20 06:58:07,842 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2107, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=284, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=2407, PETRI_PLACES=463, PETRI_TRANSITIONS=302} [2021-11-20 06:58:07,842 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 276 predicate places. [2021-11-20 06:58:07,842 INFO L470 AbstractCegarLoop]: Abstraction has has 463 places, 302 transitions, 2407 flow [2021-11-20 06:58:07,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:07,843 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:07,843 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] [2021-11-20 06:58:07,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-20 06:58:07,844 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:07,844 INFO L85 PathProgramCache]: Analyzing trace with hash 598962764, now seen corresponding path program 2 times [2021-11-20 06:58:07,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:07,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549844798] [2021-11-20 06:58:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:07,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:08,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:08,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:08,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549844798] [2021-11-20 06:58:08,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549844798] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:08,001 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:08,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:08,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549842825] [2021-11-20 06:58:08,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:08,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:08,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:08,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:08,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:08,005 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:08,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 302 transitions, 2407 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:08,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:08,007 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:08,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:09,224 INFO L129 PetriNetUnfolder]: 533/2120 cut-off events. [2021-11-20 06:58:09,224 INFO L130 PetriNetUnfolder]: For 41916/41938 co-relation queries the response was YES. [2021-11-20 06:58:09,293 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13384 conditions, 2120 events. 533/2120 cut-off events. For 41916/41938 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 15481 event pairs, 246 based on Foata normal form. 5/2063 useless extension candidates. Maximal degree in co-relation 13212. Up to 947 conditions per place. [2021-11-20 06:58:09,302 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 189 selfloop transitions, 30 changer transitions 47/424 dead transitions. [2021-11-20 06:58:09,302 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 424 transitions, 5138 flow [2021-11-20 06:58:09,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 06:58:09,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-11-20 06:58:09,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4655 transitions. [2021-11-20 06:58:09,305 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764367816091954 [2021-11-20 06:58:09,305 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4655 transitions. [2021-11-20 06:58:09,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4655 transitions. [2021-11-20 06:58:09,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:09,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4655 transitions. [2021-11-20 06:58:09,309 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.51724137931035) internal successors, (4655), 29 states have internal predecessors, (4655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:09,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:09,313 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:09,313 INFO L186 Difference]: Start difference. First operand has 463 places, 302 transitions, 2407 flow. Second operand 29 states and 4655 transitions. [2021-11-20 06:58:09,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 424 transitions, 5138 flow [2021-11-20 06:58:09,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 418 places, 424 transitions, 4705 flow, removed 215 selfloop flow, removed 26 redundant places. [2021-11-20 06:58:09,514 INFO L242 Difference]: Finished difference. Result has 436 places, 329 transitions, 2985 flow [2021-11-20 06:58:09,515 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2326, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=285, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=2985, PETRI_PLACES=436, PETRI_TRANSITIONS=329} [2021-11-20 06:58:09,515 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 249 predicate places. [2021-11-20 06:58:09,515 INFO L470 AbstractCegarLoop]: Abstraction has has 436 places, 329 transitions, 2985 flow [2021-11-20 06:58:09,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:09,516 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:09,516 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] [2021-11-20 06:58:09,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-20 06:58:09,516 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:09,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:09,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1211303048, now seen corresponding path program 3 times [2021-11-20 06:58:09,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:09,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558874064] [2021-11-20 06:58:09,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:09,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:09,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:09,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:09,674 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:09,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558874064] [2021-11-20 06:58:09,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558874064] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:09,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:09,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:09,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775672872] [2021-11-20 06:58:09,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:09,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:09,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:09,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:09,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:09,677 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:09,678 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 436 places, 329 transitions, 2985 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:09,678 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:09,678 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:09,678 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:11,322 INFO L129 PetriNetUnfolder]: 684/2520 cut-off events. [2021-11-20 06:58:11,322 INFO L130 PetriNetUnfolder]: For 50613/50638 co-relation queries the response was YES. [2021-11-20 06:58:11,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16603 conditions, 2520 events. 684/2520 cut-off events. For 50613/50638 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 19310 event pairs, 294 based on Foata normal form. 5/2460 useless extension candidates. Maximal degree in co-relation 16437. Up to 959 conditions per place. [2021-11-20 06:58:11,414 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 244 selfloop transitions, 25 changer transitions 88/515 dead transitions. [2021-11-20 06:58:11,414 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 515 transitions, 7213 flow [2021-11-20 06:58:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-11-20 06:58:11,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-11-20 06:58:11,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 8133 transitions. [2021-11-20 06:58:11,421 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593837535014005 [2021-11-20 06:58:11,421 INFO L72 ComplementDD]: Start complementDD. Operand 51 states and 8133 transitions. [2021-11-20 06:58:11,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 51 states and 8133 transitions. [2021-11-20 06:58:11,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:11,424 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 51 states and 8133 transitions. [2021-11-20 06:58:11,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 52 states, 51 states have (on average 159.47058823529412) internal successors, (8133), 51 states have internal predecessors, (8133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:11,440 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:11,443 INFO L81 ComplementDD]: Finished complementDD. Result has 52 states, 52 states have (on average 210.0) internal successors, (10920), 52 states have internal predecessors, (10920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:11,443 INFO L186 Difference]: Start difference. First operand has 436 places, 329 transitions, 2985 flow. Second operand 51 states and 8133 transitions. [2021-11-20 06:58:11,443 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 515 transitions, 7213 flow [2021-11-20 06:58:11,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 515 transitions, 6328 flow, removed 437 selfloop flow, removed 12 redundant places. [2021-11-20 06:58:11,678 INFO L242 Difference]: Finished difference. Result has 506 places, 350 transitions, 3096 flow [2021-11-20 06:58:11,679 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2592, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=314, PETRI_DIFFERENCE_SUBTRAHEND_STATES=51, PETRI_FLOW=3096, PETRI_PLACES=506, PETRI_TRANSITIONS=350} [2021-11-20 06:58:11,679 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 319 predicate places. [2021-11-20 06:58:11,679 INFO L470 AbstractCegarLoop]: Abstraction has has 506 places, 350 transitions, 3096 flow [2021-11-20 06:58:11,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:11,679 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:11,680 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] [2021-11-20 06:58:11,680 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-20 06:58:11,680 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:11,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:11,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1316732516, now seen corresponding path program 4 times [2021-11-20 06:58:11,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:11,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920702965] [2021-11-20 06:58:11,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:11,680 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:11,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:11,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:11,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:11,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920702965] [2021-11-20 06:58:11,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920702965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:11,857 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:11,857 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:11,857 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96006949] [2021-11-20 06:58:11,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:11,858 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:11,858 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:11,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:11,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:11,860 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:11,862 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 506 places, 350 transitions, 3096 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:11,862 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:11,862 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:11,862 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:13,222 INFO L129 PetriNetUnfolder]: 682/2465 cut-off events. [2021-11-20 06:58:13,223 INFO L130 PetriNetUnfolder]: For 69188/69226 co-relation queries the response was YES. [2021-11-20 06:58:13,277 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17980 conditions, 2465 events. 682/2465 cut-off events. For 69188/69226 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 18790 event pairs, 244 based on Foata normal form. 3/2412 useless extension candidates. Maximal degree in co-relation 17779. Up to 929 conditions per place. [2021-11-20 06:58:13,288 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 241 selfloop transitions, 54 changer transitions 50/503 dead transitions. [2021-11-20 06:58:13,289 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 503 transitions, 6574 flow [2021-11-20 06:58:13,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 06:58:13,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-20 06:58:13,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4186 transitions. [2021-11-20 06:58:13,291 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2021-11-20 06:58:13,291 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4186 transitions. [2021-11-20 06:58:13,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4186 transitions. [2021-11-20 06:58:13,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:13,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4186 transitions. [2021-11-20 06:58:13,295 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 161.0) internal successors, (4186), 26 states have internal predecessors, (4186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:13,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:13,299 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:13,299 INFO L186 Difference]: Start difference. First operand has 506 places, 350 transitions, 3096 flow. Second operand 26 states and 4186 transitions. [2021-11-20 06:58:13,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 503 transitions, 6574 flow [2021-11-20 06:58:13,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 503 transitions, 5996 flow, removed 289 selfloop flow, removed 27 redundant places. [2021-11-20 06:58:13,646 INFO L242 Difference]: Finished difference. Result has 488 places, 375 transitions, 3611 flow [2021-11-20 06:58:13,646 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=2926, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=350, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=305, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=3611, PETRI_PLACES=488, PETRI_TRANSITIONS=375} [2021-11-20 06:58:13,646 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 301 predicate places. [2021-11-20 06:58:13,647 INFO L470 AbstractCegarLoop]: Abstraction has has 488 places, 375 transitions, 3611 flow [2021-11-20 06:58:13,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:13,647 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:13,647 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] [2021-11-20 06:58:13,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-20 06:58:13,647 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:13,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:13,648 INFO L85 PathProgramCache]: Analyzing trace with hash -676437436, now seen corresponding path program 5 times [2021-11-20 06:58:13,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:13,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93357346] [2021-11-20 06:58:13,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:13,648 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:13,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:13,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:13,818 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:13,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93357346] [2021-11-20 06:58:13,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93357346] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:13,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:13,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:13,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514989957] [2021-11-20 06:58:13,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:13,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:13,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:13,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:13,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:13,822 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:13,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 375 transitions, 3611 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:13,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:13,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:13,824 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:15,916 INFO L129 PetriNetUnfolder]: 698/2514 cut-off events. [2021-11-20 06:58:15,916 INFO L130 PetriNetUnfolder]: For 65498/65533 co-relation queries the response was YES. [2021-11-20 06:58:15,972 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18284 conditions, 2514 events. 698/2514 cut-off events. For 65498/65533 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 19317 event pairs, 239 based on Foata normal form. 3/2459 useless extension candidates. Maximal degree in co-relation 18086. Up to 870 conditions per place. [2021-11-20 06:58:15,983 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 47 changer transitions 104/637 dead transitions. [2021-11-20 06:58:15,984 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 534 places, 637 transitions, 9102 flow [2021-11-20 06:58:15,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2021-11-20 06:58:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2021-11-20 06:58:15,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 9230 transitions. [2021-11-20 06:58:15,988 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7577996715927751 [2021-11-20 06:58:15,988 INFO L72 ComplementDD]: Start complementDD. Operand 58 states and 9230 transitions. [2021-11-20 06:58:15,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 9230 transitions. [2021-11-20 06:58:15,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:15,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 58 states and 9230 transitions. [2021-11-20 06:58:15,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 59 states, 58 states have (on average 159.13793103448276) internal successors, (9230), 58 states have internal predecessors, (9230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:16,003 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:16,005 INFO L81 ComplementDD]: Finished complementDD. Result has 59 states, 59 states have (on average 210.0) internal successors, (12390), 59 states have internal predecessors, (12390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:16,005 INFO L186 Difference]: Start difference. First operand has 488 places, 375 transitions, 3611 flow. Second operand 58 states and 9230 transitions. [2021-11-20 06:58:16,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 534 places, 637 transitions, 9102 flow [2021-11-20 06:58:16,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 523 places, 637 transitions, 8362 flow, removed 368 selfloop flow, removed 11 redundant places. [2021-11-20 06:58:16,486 INFO L242 Difference]: Finished difference. Result has 572 places, 377 transitions, 3652 flow [2021-11-20 06:58:16,487 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3341, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=375, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=58, PETRI_FLOW=3652, PETRI_PLACES=572, PETRI_TRANSITIONS=377} [2021-11-20 06:58:16,487 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 385 predicate places. [2021-11-20 06:58:16,487 INFO L470 AbstractCegarLoop]: Abstraction has has 572 places, 377 transitions, 3652 flow [2021-11-20 06:58:16,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:16,488 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:16,488 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] [2021-11-20 06:58:16,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-20 06:58:16,488 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:16,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:16,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1088495388, now seen corresponding path program 6 times [2021-11-20 06:58:16,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:16,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746780885] [2021-11-20 06:58:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:16,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:16,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:16,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:16,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746780885] [2021-11-20 06:58:16,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746780885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:16,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:16,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:16,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253242038] [2021-11-20 06:58:16,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:16,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:16,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:16,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:16,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:16,661 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:16,663 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 572 places, 377 transitions, 3652 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:16,663 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:16,663 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:16,663 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:18,724 INFO L129 PetriNetUnfolder]: 740/2672 cut-off events. [2021-11-20 06:58:18,724 INFO L130 PetriNetUnfolder]: For 64722/64765 co-relation queries the response was YES. [2021-11-20 06:58:18,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19308 conditions, 2672 events. 740/2672 cut-off events. For 64722/64765 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 21083 event pairs, 265 based on Foata normal form. 13/2615 useless extension candidates. Maximal degree in co-relation 19071. Up to 988 conditions per place. [2021-11-20 06:58:18,800 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 271 selfloop transitions, 49 changer transitions 88/566 dead transitions. [2021-11-20 06:58:18,800 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 578 places, 566 transitions, 8117 flow [2021-11-20 06:58:18,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2021-11-20 06:58:18,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-11-20 06:58:18,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 8594 transitions. [2021-11-20 06:58:18,805 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7578483245149912 [2021-11-20 06:58:18,805 INFO L72 ComplementDD]: Start complementDD. Operand 54 states and 8594 transitions. [2021-11-20 06:58:18,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 8594 transitions. [2021-11-20 06:58:18,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:18,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 54 states and 8594 transitions. [2021-11-20 06:58:18,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 55 states, 54 states have (on average 159.14814814814815) internal successors, (8594), 54 states have internal predecessors, (8594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:18,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:18,820 INFO L81 ComplementDD]: Finished complementDD. Result has 55 states, 55 states have (on average 210.0) internal successors, (11550), 55 states have internal predecessors, (11550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:18,820 INFO L186 Difference]: Start difference. First operand has 572 places, 377 transitions, 3652 flow. Second operand 54 states and 8594 transitions. [2021-11-20 06:58:18,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 578 places, 566 transitions, 8117 flow [2021-11-20 06:58:19,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 531 places, 566 transitions, 7394 flow, removed 249 selfloop flow, removed 47 redundant places. [2021-11-20 06:58:19,225 INFO L242 Difference]: Finished difference. Result has 574 places, 394 transitions, 3999 flow [2021-11-20 06:58:19,226 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3494, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=377, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=338, PETRI_DIFFERENCE_SUBTRAHEND_STATES=54, PETRI_FLOW=3999, PETRI_PLACES=574, PETRI_TRANSITIONS=394} [2021-11-20 06:58:19,226 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 387 predicate places. [2021-11-20 06:58:19,227 INFO L470 AbstractCegarLoop]: Abstraction has has 574 places, 394 transitions, 3999 flow [2021-11-20 06:58:19,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:19,227 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:19,227 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] [2021-11-20 06:58:19,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-20 06:58:19,228 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:19,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:19,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1996031714, now seen corresponding path program 7 times [2021-11-20 06:58:19,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:19,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174798733] [2021-11-20 06:58:19,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:19,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:19,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:19,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:19,372 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:19,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174798733] [2021-11-20 06:58:19,372 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174798733] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:19,372 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:19,372 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:19,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47160930] [2021-11-20 06:58:19,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:19,373 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:19,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:19,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:19,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:19,375 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:19,376 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 574 places, 394 transitions, 3999 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:19,376 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:19,377 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:19,377 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:21,362 INFO L129 PetriNetUnfolder]: 742/2722 cut-off events. [2021-11-20 06:58:21,362 INFO L130 PetriNetUnfolder]: For 64710/64759 co-relation queries the response was YES. [2021-11-20 06:58:21,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19621 conditions, 2722 events. 742/2722 cut-off events. For 64710/64759 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 21712 event pairs, 370 based on Foata normal form. 3/2650 useless extension candidates. Maximal degree in co-relation 19384. Up to 937 conditions per place. [2021-11-20 06:58:21,444 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 270 selfloop transitions, 50 changer transitions 89/567 dead transitions. [2021-11-20 06:58:21,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 581 places, 567 transitions, 8570 flow [2021-11-20 06:58:21,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-20 06:58:21,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-11-20 06:58:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7972 transitions. [2021-11-20 06:58:21,449 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592380952380953 [2021-11-20 06:58:21,449 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7972 transitions. [2021-11-20 06:58:21,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7972 transitions. [2021-11-20 06:58:21,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:21,450 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7972 transitions. [2021-11-20 06:58:21,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.44) internal successors, (7972), 50 states have internal predecessors, (7972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:21,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:21,463 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:21,463 INFO L186 Difference]: Start difference. First operand has 574 places, 394 transitions, 3999 flow. Second operand 50 states and 7972 transitions. [2021-11-20 06:58:21,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 581 places, 567 transitions, 8570 flow [2021-11-20 06:58:21,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 544 places, 567 transitions, 7988 flow, removed 282 selfloop flow, removed 37 redundant places. [2021-11-20 06:58:21,922 INFO L242 Difference]: Finished difference. Result has 591 places, 412 transitions, 4523 flow [2021-11-20 06:58:21,923 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3887, PETRI_DIFFERENCE_MINUEND_PLACES=495, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=352, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=4523, PETRI_PLACES=591, PETRI_TRANSITIONS=412} [2021-11-20 06:58:21,923 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 404 predicate places. [2021-11-20 06:58:21,923 INFO L470 AbstractCegarLoop]: Abstraction has has 591 places, 412 transitions, 4523 flow [2021-11-20 06:58:21,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:21,923 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:21,924 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] [2021-11-20 06:58:21,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-20 06:58:21,924 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:21,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:21,924 INFO L85 PathProgramCache]: Analyzing trace with hash 459389038, now seen corresponding path program 8 times [2021-11-20 06:58:21,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:21,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141915230] [2021-11-20 06:58:21,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:21,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:22,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:22,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:22,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141915230] [2021-11-20 06:58:22,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141915230] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:22,087 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:22,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:22,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323903036] [2021-11-20 06:58:22,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:22,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:22,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:22,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:22,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:22,091 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:22,092 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 591 places, 412 transitions, 4523 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:22,092 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:22,092 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:22,092 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:24,164 INFO L129 PetriNetUnfolder]: 736/2701 cut-off events. [2021-11-20 06:58:24,164 INFO L130 PetriNetUnfolder]: For 77673/77740 co-relation queries the response was YES. [2021-11-20 06:58:24,215 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20655 conditions, 2701 events. 736/2701 cut-off events. For 77673/77740 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21544 event pairs, 293 based on Foata normal form. 7/2623 useless extension candidates. Maximal degree in co-relation 20407. Up to 1041 conditions per place. [2021-11-20 06:58:24,228 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 341 selfloop transitions, 69 changer transitions 92/660 dead transitions. [2021-11-20 06:58:24,228 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 602 places, 660 transitions, 11305 flow [2021-11-20 06:58:24,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2021-11-20 06:58:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-11-20 06:58:24,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 7963 transitions. [2021-11-20 06:58:24,232 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7583809523809524 [2021-11-20 06:58:24,232 INFO L72 ComplementDD]: Start complementDD. Operand 50 states and 7963 transitions. [2021-11-20 06:58:24,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 50 states and 7963 transitions. [2021-11-20 06:58:24,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:24,234 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 50 states and 7963 transitions. [2021-11-20 06:58:24,239 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 51 states, 50 states have (on average 159.26) internal successors, (7963), 50 states have internal predecessors, (7963), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:24,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:24,246 INFO L81 ComplementDD]: Finished complementDD. Result has 51 states, 51 states have (on average 210.0) internal successors, (10710), 51 states have internal predecessors, (10710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:24,246 INFO L186 Difference]: Start difference. First operand has 591 places, 412 transitions, 4523 flow. Second operand 50 states and 7963 transitions. [2021-11-20 06:58:24,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 602 places, 660 transitions, 11305 flow [2021-11-20 06:58:24,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 568 places, 660 transitions, 10294 flow, removed 486 selfloop flow, removed 34 redundant places. [2021-11-20 06:58:24,959 INFO L242 Difference]: Finished difference. Result has 613 places, 442 transitions, 5193 flow [2021-11-20 06:58:24,959 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4310, PETRI_DIFFERENCE_MINUEND_PLACES=519, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=412, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=363, PETRI_DIFFERENCE_SUBTRAHEND_STATES=50, PETRI_FLOW=5193, PETRI_PLACES=613, PETRI_TRANSITIONS=442} [2021-11-20 06:58:24,959 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 426 predicate places. [2021-11-20 06:58:24,960 INFO L470 AbstractCegarLoop]: Abstraction has has 613 places, 442 transitions, 5193 flow [2021-11-20 06:58:24,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:24,960 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:24,961 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] [2021-11-20 06:58:24,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-20 06:58:24,961 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:24,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:24,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1557791354, now seen corresponding path program 9 times [2021-11-20 06:58:24,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:24,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669848160] [2021-11-20 06:58:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:24,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:25,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:25,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:25,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669848160] [2021-11-20 06:58:25,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669848160] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:25,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:25,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:25,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670976215] [2021-11-20 06:58:25,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:25,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:25,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:25,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:25,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:25,138 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:25,140 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 613 places, 442 transitions, 5193 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:25,140 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:25,140 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:25,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:27,091 INFO L129 PetriNetUnfolder]: 726/2721 cut-off events. [2021-11-20 06:58:27,091 INFO L130 PetriNetUnfolder]: For 70682/70737 co-relation queries the response was YES. [2021-11-20 06:58:27,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20303 conditions, 2721 events. 726/2721 cut-off events. For 70682/70737 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 21899 event pairs, 272 based on Foata normal form. 15/2664 useless extension candidates. Maximal degree in co-relation 20043. Up to 1014 conditions per place. [2021-11-20 06:58:27,184 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 302 selfloop transitions, 81 changer transitions 80/621 dead transitions. [2021-11-20 06:58:27,184 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 620 places, 621 transitions, 10002 flow [2021-11-20 06:58:27,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-20 06:58:27,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-11-20 06:58:27,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7332 transitions. [2021-11-20 06:58:27,188 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7590062111801242 [2021-11-20 06:58:27,188 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7332 transitions. [2021-11-20 06:58:27,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7332 transitions. [2021-11-20 06:58:27,189 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:27,189 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7332 transitions. [2021-11-20 06:58:27,193 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.3913043478261) internal successors, (7332), 46 states have internal predecessors, (7332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:27,198 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:27,200 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:27,200 INFO L186 Difference]: Start difference. First operand has 613 places, 442 transitions, 5193 flow. Second operand 46 states and 7332 transitions. [2021-11-20 06:58:27,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 620 places, 621 transitions, 10002 flow [2021-11-20 06:58:27,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 621 transitions, 9543 flow, removed 190 selfloop flow, removed 39 redundant places. [2021-11-20 06:58:27,850 INFO L242 Difference]: Finished difference. Result has 614 places, 452 transitions, 5481 flow [2021-11-20 06:58:27,851 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4990, PETRI_DIFFERENCE_MINUEND_PLACES=536, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=442, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=366, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=5481, PETRI_PLACES=614, PETRI_TRANSITIONS=452} [2021-11-20 06:58:27,853 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 427 predicate places. [2021-11-20 06:58:27,854 INFO L470 AbstractCegarLoop]: Abstraction has has 614 places, 452 transitions, 5481 flow [2021-11-20 06:58:27,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:27,854 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:27,855 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] [2021-11-20 06:58:27,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-20 06:58:27,855 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:27,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:27,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1351277932, now seen corresponding path program 10 times [2021-11-20 06:58:27,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:27,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842561203] [2021-11-20 06:58:27,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:27,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:28,025 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:28,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842561203] [2021-11-20 06:58:28,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842561203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:28,025 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:28,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:28,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078132450] [2021-11-20 06:58:28,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:28,026 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:28,026 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:28,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:28,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:28,028 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:28,030 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 614 places, 452 transitions, 5481 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:28,030 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:28,030 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:28,030 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:30,379 INFO L129 PetriNetUnfolder]: 749/2759 cut-off events. [2021-11-20 06:58:30,379 INFO L130 PetriNetUnfolder]: For 72973/73021 co-relation queries the response was YES. [2021-11-20 06:58:30,451 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20999 conditions, 2759 events. 749/2759 cut-off events. For 72973/73021 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 22204 event pairs, 304 based on Foata normal form. 9/2685 useless extension candidates. Maximal degree in co-relation 20743. Up to 1035 conditions per place. [2021-11-20 06:58:30,464 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 324 selfloop transitions, 72 changer transitions 91/645 dead transitions. [2021-11-20 06:58:30,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 632 places, 645 transitions, 11141 flow [2021-11-20 06:58:30,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-11-20 06:58:30,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-11-20 06:58:30,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 8287 transitions. [2021-11-20 06:58:30,469 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7588827838827839 [2021-11-20 06:58:30,469 INFO L72 ComplementDD]: Start complementDD. Operand 52 states and 8287 transitions. [2021-11-20 06:58:30,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 8287 transitions. [2021-11-20 06:58:30,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:30,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 52 states and 8287 transitions. [2021-11-20 06:58:30,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 53 states, 52 states have (on average 159.3653846153846) internal successors, (8287), 52 states have internal predecessors, (8287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:30,481 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:30,483 INFO L81 ComplementDD]: Finished complementDD. Result has 53 states, 53 states have (on average 210.0) internal successors, (11130), 53 states have internal predecessors, (11130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:30,484 INFO L186 Difference]: Start difference. First operand has 614 places, 452 transitions, 5481 flow. Second operand 52 states and 8287 transitions. [2021-11-20 06:58:30,484 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 632 places, 645 transitions, 11141 flow [2021-11-20 06:58:31,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 599 places, 645 transitions, 10581 flow, removed 253 selfloop flow, removed 33 redundant places. [2021-11-20 06:58:31,119 INFO L242 Difference]: Finished difference. Result has 644 places, 476 transitions, 6163 flow [2021-11-20 06:58:31,120 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5295, PETRI_DIFFERENCE_MINUEND_PLACES=548, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=452, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=395, PETRI_DIFFERENCE_SUBTRAHEND_STATES=52, PETRI_FLOW=6163, PETRI_PLACES=644, PETRI_TRANSITIONS=476} [2021-11-20 06:58:31,121 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 457 predicate places. [2021-11-20 06:58:31,121 INFO L470 AbstractCegarLoop]: Abstraction has has 644 places, 476 transitions, 6163 flow [2021-11-20 06:58:31,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:31,121 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:31,122 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] [2021-11-20 06:58:31,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-20 06:58:31,122 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:31,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:31,122 INFO L85 PathProgramCache]: Analyzing trace with hash 136741500, now seen corresponding path program 11 times [2021-11-20 06:58:31,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:31,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553878967] [2021-11-20 06:58:31,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:31,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:31,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:31,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:31,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553878967] [2021-11-20 06:58:31,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553878967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:31,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:31,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:31,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368298299] [2021-11-20 06:58:31,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:31,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:31,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:31,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:31,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:31,284 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:31,286 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 644 places, 476 transitions, 6163 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:31,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:31,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:31,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:33,101 INFO L129 PetriNetUnfolder]: 735/2726 cut-off events. [2021-11-20 06:58:33,101 INFO L130 PetriNetUnfolder]: For 76800/76878 co-relation queries the response was YES. [2021-11-20 06:58:33,330 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21030 conditions, 2726 events. 735/2726 cut-off events. For 76800/76878 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 21921 event pairs, 277 based on Foata normal form. 19/2663 useless extension candidates. Maximal degree in co-relation 20761. Up to 1048 conditions per place. [2021-11-20 06:58:33,347 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 302 selfloop transitions, 98 changer transitions 69/627 dead transitions. [2021-11-20 06:58:33,347 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 641 places, 627 transitions, 10555 flow [2021-11-20 06:58:33,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 06:58:33,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 06:58:33,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6070 transitions. [2021-11-20 06:58:33,350 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7606516290726817 [2021-11-20 06:58:33,350 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6070 transitions. [2021-11-20 06:58:33,350 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6070 transitions. [2021-11-20 06:58:33,351 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:33,351 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6070 transitions. [2021-11-20 06:58:33,355 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.73684210526315) internal successors, (6070), 38 states have internal predecessors, (6070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:33,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:33,361 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:33,361 INFO L186 Difference]: Start difference. First operand has 644 places, 476 transitions, 6163 flow. Second operand 38 states and 6070 transitions. [2021-11-20 06:58:33,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 641 places, 627 transitions, 10555 flow [2021-11-20 06:58:33,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 604 places, 627 transitions, 9997 flow, removed 261 selfloop flow, removed 37 redundant places. [2021-11-20 06:58:33,921 INFO L242 Difference]: Finished difference. Result has 627 places, 486 transitions, 6471 flow [2021-11-20 06:58:33,921 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5951, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6471, PETRI_PLACES=627, PETRI_TRANSITIONS=486} [2021-11-20 06:58:33,922 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 440 predicate places. [2021-11-20 06:58:33,922 INFO L470 AbstractCegarLoop]: Abstraction has has 627 places, 486 transitions, 6471 flow [2021-11-20 06:58:33,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:33,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:33,922 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] [2021-11-20 06:58:33,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-20 06:58:33,923 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:33,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:33,923 INFO L85 PathProgramCache]: Analyzing trace with hash -396830188, now seen corresponding path program 12 times [2021-11-20 06:58:33,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:33,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021692258] [2021-11-20 06:58:33,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:33,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:34,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:34,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:34,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021692258] [2021-11-20 06:58:34,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021692258] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:34,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:34,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:34,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672983460] [2021-11-20 06:58:34,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:34,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:34,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:34,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:34,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:34,094 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:34,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 627 places, 486 transitions, 6471 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:34,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:34,096 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:34,096 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:36,284 INFO L129 PetriNetUnfolder]: 737/2751 cut-off events. [2021-11-20 06:58:36,284 INFO L130 PetriNetUnfolder]: For 72983/73059 co-relation queries the response was YES. [2021-11-20 06:58:36,358 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20974 conditions, 2751 events. 737/2751 cut-off events. For 72983/73059 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 22248 event pairs, 283 based on Foata normal form. 15/2685 useless extension candidates. Maximal degree in co-relation 20718. Up to 1023 conditions per place. [2021-11-20 06:58:36,372 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 323 selfloop transitions, 86 changer transitions 92/659 dead transitions. [2021-11-20 06:58:36,372 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 659 transitions, 11522 flow [2021-11-20 06:58:36,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-11-20 06:58:36,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2021-11-20 06:58:36,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 8441 transitions. [2021-11-20 06:58:36,376 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7584007187780772 [2021-11-20 06:58:36,376 INFO L72 ComplementDD]: Start complementDD. Operand 53 states and 8441 transitions. [2021-11-20 06:58:36,376 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 8441 transitions. [2021-11-20 06:58:36,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:36,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 53 states and 8441 transitions. [2021-11-20 06:58:36,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 54 states, 53 states have (on average 159.26415094339623) internal successors, (8441), 53 states have internal predecessors, (8441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:36,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:36,391 INFO L81 ComplementDD]: Finished complementDD. Result has 54 states, 54 states have (on average 210.0) internal successors, (11340), 54 states have internal predecessors, (11340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:36,394 INFO L186 Difference]: Start difference. First operand has 627 places, 486 transitions, 6471 flow. Second operand 53 states and 8441 transitions. [2021-11-20 06:58:36,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 659 transitions, 11522 flow [2021-11-20 06:58:36,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 635 places, 659 transitions, 11094 flow, removed 184 selfloop flow, removed 20 redundant places. [2021-11-20 06:58:36,989 INFO L242 Difference]: Finished difference. Result has 678 places, 492 transitions, 6785 flow [2021-11-20 06:58:36,990 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6281, PETRI_DIFFERENCE_MINUEND_PLACES=583, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=79, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=402, PETRI_DIFFERENCE_SUBTRAHEND_STATES=53, PETRI_FLOW=6785, PETRI_PLACES=678, PETRI_TRANSITIONS=492} [2021-11-20 06:58:36,990 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 491 predicate places. [2021-11-20 06:58:36,990 INFO L470 AbstractCegarLoop]: Abstraction has has 678 places, 492 transitions, 6785 flow [2021-11-20 06:58:36,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:36,991 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:36,991 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] [2021-11-20 06:58:36,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-20 06:58:36,991 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:36,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:36,991 INFO L85 PathProgramCache]: Analyzing trace with hash 597657638, now seen corresponding path program 13 times [2021-11-20 06:58:36,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:36,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891079596] [2021-11-20 06:58:36,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:36,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:37,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:37,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:37,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:37,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891079596] [2021-11-20 06:58:37,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891079596] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:37,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:37,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:37,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064528008] [2021-11-20 06:58:37,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:37,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:37,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:37,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:37,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:37,133 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:37,135 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 678 places, 492 transitions, 6785 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:37,135 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:37,135 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:37,135 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:38,970 INFO L129 PetriNetUnfolder]: 715/2645 cut-off events. [2021-11-20 06:58:38,970 INFO L130 PetriNetUnfolder]: For 73486/73544 co-relation queries the response was YES. [2021-11-20 06:58:39,080 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20587 conditions, 2645 events. 715/2645 cut-off events. For 73486/73544 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 20900 event pairs, 278 based on Foata normal form. 15/2578 useless extension candidates. Maximal degree in co-relation 20306. Up to 1048 conditions per place. [2021-11-20 06:58:39,099 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 300 selfloop transitions, 102 changer transitions 59/619 dead transitions. [2021-11-20 06:58:39,100 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 619 transitions, 10570 flow [2021-11-20 06:58:39,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 06:58:39,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 06:58:39,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4808 transitions. [2021-11-20 06:58:39,104 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631746031746032 [2021-11-20 06:58:39,104 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4808 transitions. [2021-11-20 06:58:39,105 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4808 transitions. [2021-11-20 06:58:39,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:39,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4808 transitions. [2021-11-20 06:58:39,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.26666666666668) internal successors, (4808), 30 states have internal predecessors, (4808), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:39,116 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:39,118 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:39,118 INFO L186 Difference]: Start difference. First operand has 678 places, 492 transitions, 6785 flow. Second operand 30 states and 4808 transitions. [2021-11-20 06:58:39,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 619 transitions, 10570 flow [2021-11-20 06:58:39,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 627 places, 619 transitions, 10014 flow, removed 208 selfloop flow, removed 39 redundant places. [2021-11-20 06:58:39,854 INFO L242 Difference]: Finished difference. Result has 640 places, 501 transitions, 6936 flow [2021-11-20 06:58:39,855 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6481, PETRI_DIFFERENCE_MINUEND_PLACES=598, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=492, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=394, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6936, PETRI_PLACES=640, PETRI_TRANSITIONS=501} [2021-11-20 06:58:39,855 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 453 predicate places. [2021-11-20 06:58:39,855 INFO L470 AbstractCegarLoop]: Abstraction has has 640 places, 501 transitions, 6936 flow [2021-11-20 06:58:39,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:39,855 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:39,856 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] [2021-11-20 06:58:39,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-20 06:58:39,856 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:39,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:39,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1879909750, now seen corresponding path program 14 times [2021-11-20 06:58:39,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:39,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005070785] [2021-11-20 06:58:39,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:39,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:39,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:40,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:40,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:40,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005070785] [2021-11-20 06:58:40,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005070785] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:40,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:40,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:40,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730555056] [2021-11-20 06:58:40,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:40,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:40,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:40,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:40,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:40,025 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:40,026 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 640 places, 501 transitions, 6936 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:40,026 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:40,026 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:40,026 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:41,857 INFO L129 PetriNetUnfolder]: 709/2644 cut-off events. [2021-11-20 06:58:41,857 INFO L130 PetriNetUnfolder]: For 68426/68484 co-relation queries the response was YES. [2021-11-20 06:58:41,920 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20217 conditions, 2644 events. 709/2644 cut-off events. For 68426/68484 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 20938 event pairs, 282 based on Foata normal form. 11/2571 useless extension candidates. Maximal degree in co-relation 19960. Up to 1046 conditions per place. [2021-11-20 06:58:41,932 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 295 selfloop transitions, 105 changer transitions 66/624 dead transitions. [2021-11-20 06:58:41,932 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 624 transitions, 10683 flow [2021-11-20 06:58:41,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-11-20 06:58:41,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2021-11-20 06:58:41,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 5441 transitions. [2021-11-20 06:58:41,935 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620448179271708 [2021-11-20 06:58:41,935 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 5441 transitions. [2021-11-20 06:58:41,935 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 5441 transitions. [2021-11-20 06:58:41,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:41,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 5441 transitions. [2021-11-20 06:58:41,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 160.02941176470588) internal successors, (5441), 34 states have internal predecessors, (5441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:41,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:41,944 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 210.0) internal successors, (7350), 35 states have internal predecessors, (7350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:41,944 INFO L186 Difference]: Start difference. First operand has 640 places, 501 transitions, 6936 flow. Second operand 34 states and 5441 transitions. [2021-11-20 06:58:41,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 624 transitions, 10683 flow [2021-11-20 06:58:42,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 642 places, 624 transitions, 10382 flow, removed 98 selfloop flow, removed 16 redundant places. [2021-11-20 06:58:42,500 INFO L242 Difference]: Finished difference. Result has 661 places, 506 transitions, 7161 flow [2021-11-20 06:58:42,501 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6718, PETRI_DIFFERENCE_MINUEND_PLACES=609, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=501, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=7161, PETRI_PLACES=661, PETRI_TRANSITIONS=506} [2021-11-20 06:58:42,502 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 474 predicate places. [2021-11-20 06:58:42,502 INFO L470 AbstractCegarLoop]: Abstraction has has 661 places, 506 transitions, 7161 flow [2021-11-20 06:58:42,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:42,503 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:42,503 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] [2021-11-20 06:58:42,503 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-20 06:58:42,503 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:42,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:42,504 INFO L85 PathProgramCache]: Analyzing trace with hash 455651138, now seen corresponding path program 15 times [2021-11-20 06:58:42,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:42,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956930114] [2021-11-20 06:58:42,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:42,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:42,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:42,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956930114] [2021-11-20 06:58:42,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956930114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:42,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:42,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:42,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641499986] [2021-11-20 06:58:42,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:42,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:42,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:42,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:42,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:42,662 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:42,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 661 places, 506 transitions, 7161 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:42,664 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:42,664 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:42,664 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:44,166 INFO L129 PetriNetUnfolder]: 676/2543 cut-off events. [2021-11-20 06:58:44,167 INFO L130 PetriNetUnfolder]: For 66632/66724 co-relation queries the response was YES. [2021-11-20 06:58:44,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19500 conditions, 2543 events. 676/2543 cut-off events. For 66632/66724 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 19954 event pairs, 275 based on Foata normal form. 23/2487 useless extension candidates. Maximal degree in co-relation 19236. Up to 1029 conditions per place. [2021-11-20 06:58:44,239 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 284 selfloop transitions, 73 changer transitions 66/581 dead transitions. [2021-11-20 06:58:44,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 581 transitions, 9565 flow [2021-11-20 06:58:44,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-20 06:58:44,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2021-11-20 06:58:44,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 4167 transitions. [2021-11-20 06:58:44,242 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7631868131868131 [2021-11-20 06:58:44,242 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 4167 transitions. [2021-11-20 06:58:44,242 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 4167 transitions. [2021-11-20 06:58:44,243 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:44,243 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 4167 transitions. [2021-11-20 06:58:44,245 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 160.26923076923077) internal successors, (4167), 26 states have internal predecessors, (4167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:44,248 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:44,248 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 210.0) internal successors, (5670), 27 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:44,248 INFO L186 Difference]: Start difference. First operand has 661 places, 506 transitions, 7161 flow. Second operand 26 states and 4167 transitions. [2021-11-20 06:58:44,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 581 transitions, 9565 flow [2021-11-20 06:58:45,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 581 transitions, 9243 flow, removed 60 selfloop flow, removed 21 redundant places. [2021-11-20 06:58:45,031 INFO L242 Difference]: Finished difference. Result has 650 places, 458 transitions, 6049 flow [2021-11-20 06:58:45,032 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6894, PETRI_DIFFERENCE_MINUEND_PLACES=620, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=506, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=6049, PETRI_PLACES=650, PETRI_TRANSITIONS=458} [2021-11-20 06:58:45,033 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 463 predicate places. [2021-11-20 06:58:45,033 INFO L470 AbstractCegarLoop]: Abstraction has has 650 places, 458 transitions, 6049 flow [2021-11-20 06:58:45,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:45,035 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:45,035 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] [2021-11-20 06:58:45,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-20 06:58:45,035 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:45,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:45,036 INFO L85 PathProgramCache]: Analyzing trace with hash 692461534, now seen corresponding path program 16 times [2021-11-20 06:58:45,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:45,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064060416] [2021-11-20 06:58:45,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:45,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:45,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:45,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:45,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:45,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064060416] [2021-11-20 06:58:45,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064060416] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:45,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:45,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:45,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380388724] [2021-11-20 06:58:45,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:45,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:45,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:45,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:45,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:45,211 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:45,213 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 650 places, 458 transitions, 6049 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:45,213 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:45,213 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:45,213 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:46,914 INFO L129 PetriNetUnfolder]: 678/2554 cut-off events. [2021-11-20 06:58:46,914 INFO L130 PetriNetUnfolder]: For 70045/70117 co-relation queries the response was YES. [2021-11-20 06:58:46,975 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19679 conditions, 2554 events. 678/2554 cut-off events. For 70045/70117 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20098 event pairs, 286 based on Foata normal form. 11/2480 useless extension candidates. Maximal degree in co-relation 19425. Up to 1029 conditions per place. [2021-11-20 06:58:46,986 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 299 selfloop transitions, 88 changer transitions 80/625 dead transitions. [2021-11-20 06:58:46,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 644 places, 625 transitions, 11500 flow [2021-11-20 06:58:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2021-11-20 06:58:46,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-11-20 06:58:46,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 6702 transitions. [2021-11-20 06:58:47,000 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598639455782313 [2021-11-20 06:58:47,000 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 6702 transitions. [2021-11-20 06:58:47,000 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 6702 transitions. [2021-11-20 06:58:47,002 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:47,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 6702 transitions. [2021-11-20 06:58:47,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 159.57142857142858) internal successors, (6702), 42 states have internal predecessors, (6702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:47,014 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:47,015 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 210.0) internal successors, (9030), 43 states have internal predecessors, (9030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:47,015 INFO L186 Difference]: Start difference. First operand has 650 places, 458 transitions, 6049 flow. Second operand 42 states and 6702 transitions. [2021-11-20 06:58:47,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 644 places, 625 transitions, 11500 flow [2021-11-20 06:58:47,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 610 places, 625 transitions, 10433 flow, removed 68 selfloop flow, removed 34 redundant places. [2021-11-20 06:58:47,690 INFO L242 Difference]: Finished difference. Result has 645 places, 479 transitions, 6436 flow [2021-11-20 06:58:47,690 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5550, PETRI_DIFFERENCE_MINUEND_PLACES=569, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=458, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=383, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=6436, PETRI_PLACES=645, PETRI_TRANSITIONS=479} [2021-11-20 06:58:47,691 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 458 predicate places. [2021-11-20 06:58:47,691 INFO L470 AbstractCegarLoop]: Abstraction has has 645 places, 479 transitions, 6436 flow [2021-11-20 06:58:47,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:47,692 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:47,692 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] [2021-11-20 06:58:47,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-20 06:58:47,692 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:47,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:47,693 INFO L85 PathProgramCache]: Analyzing trace with hash 1540544570, now seen corresponding path program 17 times [2021-11-20 06:58:47,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:47,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633659771] [2021-11-20 06:58:47,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:47,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:47,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:47,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:47,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633659771] [2021-11-20 06:58:47,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633659771] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:47,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:47,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:47,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157218155] [2021-11-20 06:58:47,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:47,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:47,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:47,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:47,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:47,862 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:47,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 645 places, 479 transitions, 6436 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:47,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:47,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:47,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:49,730 INFO L129 PetriNetUnfolder]: 714/2684 cut-off events. [2021-11-20 06:58:49,731 INFO L130 PetriNetUnfolder]: For 70557/70629 co-relation queries the response was YES. [2021-11-20 06:58:49,795 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20433 conditions, 2684 events. 714/2684 cut-off events. For 70557/70629 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21517 event pairs, 287 based on Foata normal form. 15/2614 useless extension candidates. Maximal degree in co-relation 20164. Up to 1031 conditions per place. [2021-11-20 06:58:49,807 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 313 selfloop transitions, 105 changer transitions 83/659 dead transitions. [2021-11-20 06:58:49,807 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 659 transitions, 11592 flow [2021-11-20 06:58:49,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-20 06:58:49,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-11-20 06:58:49,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7339 transitions. [2021-11-20 06:58:49,811 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7597308488612836 [2021-11-20 06:58:49,811 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7339 transitions. [2021-11-20 06:58:49,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7339 transitions. [2021-11-20 06:58:49,812 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:49,812 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7339 transitions. [2021-11-20 06:58:49,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.54347826086956) internal successors, (7339), 46 states have internal predecessors, (7339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:49,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:49,822 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:49,822 INFO L186 Difference]: Start difference. First operand has 645 places, 479 transitions, 6436 flow. Second operand 46 states and 7339 transitions. [2021-11-20 06:58:49,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 659 transitions, 11592 flow [2021-11-20 06:58:50,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 659 transitions, 10888 flow, removed 244 selfloop flow, removed 31 redundant places. [2021-11-20 06:58:50,409 INFO L242 Difference]: Finished difference. Result has 664 places, 504 transitions, 6924 flow [2021-11-20 06:58:50,410 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6060, PETRI_DIFFERENCE_MINUEND_PLACES=585, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=6924, PETRI_PLACES=664, PETRI_TRANSITIONS=504} [2021-11-20 06:58:50,411 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 477 predicate places. [2021-11-20 06:58:50,411 INFO L470 AbstractCegarLoop]: Abstraction has has 664 places, 504 transitions, 6924 flow [2021-11-20 06:58:50,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:50,412 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:50,412 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] [2021-11-20 06:58:50,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-20 06:58:50,412 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:50,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:50,413 INFO L85 PathProgramCache]: Analyzing trace with hash -2095416580, now seen corresponding path program 18 times [2021-11-20 06:58:50,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:50,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524103281] [2021-11-20 06:58:50,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:50,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:50,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:50,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:50,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:50,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524103281] [2021-11-20 06:58:50,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524103281] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:50,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:50,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:50,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939899813] [2021-11-20 06:58:50,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:50,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:50,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:50,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:50,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:50,563 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:50,564 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 504 transitions, 6924 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:50,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:50,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:50,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:52,472 INFO L129 PetriNetUnfolder]: 708/2683 cut-off events. [2021-11-20 06:58:52,472 INFO L130 PetriNetUnfolder]: For 69961/70034 co-relation queries the response was YES. [2021-11-20 06:58:52,532 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20439 conditions, 2683 events. 708/2683 cut-off events. For 69961/70034 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 21521 event pairs, 288 based on Foata normal form. 15/2617 useless extension candidates. Maximal degree in co-relation 20164. Up to 1023 conditions per place. [2021-11-20 06:58:52,544 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 313 selfloop transitions, 106 changer transitions 84/661 dead transitions. [2021-11-20 06:58:52,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 675 places, 661 transitions, 11615 flow [2021-11-20 06:58:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-20 06:58:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-11-20 06:58:52,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7179 transitions. [2021-11-20 06:58:52,548 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7596825396825397 [2021-11-20 06:58:52,548 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7179 transitions. [2021-11-20 06:58:52,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7179 transitions. [2021-11-20 06:58:52,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:52,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7179 transitions. [2021-11-20 06:58:52,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.53333333333333) internal successors, (7179), 45 states have internal predecessors, (7179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:52,559 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:52,560 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:52,561 INFO L186 Difference]: Start difference. First operand has 664 places, 504 transitions, 6924 flow. Second operand 45 states and 7179 transitions. [2021-11-20 06:58:52,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 675 places, 661 transitions, 11615 flow [2021-11-20 06:58:53,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 645 places, 661 transitions, 11204 flow, removed 178 selfloop flow, removed 30 redundant places. [2021-11-20 06:58:53,138 INFO L242 Difference]: Finished difference. Result has 679 places, 508 transitions, 7246 flow [2021-11-20 06:58:53,138 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6755, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=504, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=399, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=7246, PETRI_PLACES=679, PETRI_TRANSITIONS=508} [2021-11-20 06:58:53,138 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 492 predicate places. [2021-11-20 06:58:53,139 INFO L470 AbstractCegarLoop]: Abstraction has has 679 places, 508 transitions, 7246 flow [2021-11-20 06:58:53,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:53,139 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:53,139 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] [2021-11-20 06:58:53,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-20 06:58:53,139 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:53,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:53,140 INFO L85 PathProgramCache]: Analyzing trace with hash 698593400, now seen corresponding path program 19 times [2021-11-20 06:58:53,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:53,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473226867] [2021-11-20 06:58:53,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:53,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:53,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:53,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:53,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473226867] [2021-11-20 06:58:53,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473226867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:53,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:53,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:53,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759557698] [2021-11-20 06:58:53,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:53,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:53,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:53,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:53,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:53,290 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:53,291 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 508 transitions, 7246 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:53,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:53,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:53,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:55,044 INFO L129 PetriNetUnfolder]: 697/2633 cut-off events. [2021-11-20 06:58:55,044 INFO L130 PetriNetUnfolder]: For 69723/69798 co-relation queries the response was YES. [2021-11-20 06:58:55,110 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20209 conditions, 2633 events. 697/2633 cut-off events. For 69723/69798 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 20995 event pairs, 285 based on Foata normal form. 15/2565 useless extension candidates. Maximal degree in co-relation 19928. Up to 1032 conditions per place. [2021-11-20 06:58:55,123 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 311 selfloop transitions, 105 changer transitions 73/647 dead transitions. [2021-11-20 06:58:55,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 684 places, 647 transitions, 11501 flow [2021-11-20 06:58:55,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 06:58:55,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 06:58:55,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2021-11-20 06:58:55,136 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2021-11-20 06:58:55,136 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2021-11-20 06:58:55,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2021-11-20 06:58:55,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:55,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2021-11-20 06:58:55,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:55,145 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:55,146 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:55,146 INFO L186 Difference]: Start difference. First operand has 679 places, 508 transitions, 7246 flow. Second operand 38 states and 6077 transitions. [2021-11-20 06:58:55,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 684 places, 647 transitions, 11501 flow [2021-11-20 06:58:55,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 647 transitions, 11057 flow, removed 153 selfloop flow, removed 32 redundant places. [2021-11-20 06:58:55,755 INFO L242 Difference]: Finished difference. Result has 676 places, 514 transitions, 7490 flow [2021-11-20 06:58:55,756 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7010, PETRI_DIFFERENCE_MINUEND_PLACES=615, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=508, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=405, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=7490, PETRI_PLACES=676, PETRI_TRANSITIONS=514} [2021-11-20 06:58:55,756 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 489 predicate places. [2021-11-20 06:58:55,756 INFO L470 AbstractCegarLoop]: Abstraction has has 676 places, 514 transitions, 7490 flow [2021-11-20 06:58:55,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:55,757 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:55,757 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] [2021-11-20 06:58:55,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-20 06:58:55,758 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:55,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:55,758 INFO L85 PathProgramCache]: Analyzing trace with hash 544269010, now seen corresponding path program 20 times [2021-11-20 06:58:55,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:55,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369390374] [2021-11-20 06:58:55,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:55,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:55,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:55,916 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:55,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369390374] [2021-11-20 06:58:55,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369390374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:55,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:55,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:55,916 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213608000] [2021-11-20 06:58:55,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:55,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:55,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:55,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:55,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:55,919 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:55,921 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 514 transitions, 7490 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:55,921 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:55,921 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:55,921 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:58:57,855 INFO L129 PetriNetUnfolder]: 722/2716 cut-off events. [2021-11-20 06:58:57,856 INFO L130 PetriNetUnfolder]: For 72660/72707 co-relation queries the response was YES. [2021-11-20 06:58:57,921 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21024 conditions, 2716 events. 722/2716 cut-off events. For 72660/72707 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 21869 event pairs, 293 based on Foata normal form. 9/2639 useless extension candidates. Maximal degree in co-relation 20747. Up to 1041 conditions per place. [2021-11-20 06:58:57,933 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 312 selfloop transitions, 122 changer transitions 72/664 dead transitions. [2021-11-20 06:58:57,933 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 688 places, 664 transitions, 12095 flow [2021-11-20 06:58:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 06:58:57,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-20 06:58:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5917 transitions. [2021-11-20 06:58:57,937 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615186615186615 [2021-11-20 06:58:57,937 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5917 transitions. [2021-11-20 06:58:57,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5917 transitions. [2021-11-20 06:58:57,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:58:57,938 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5917 transitions. [2021-11-20 06:58:57,941 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.9189189189189) internal successors, (5917), 37 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:57,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:57,946 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:57,946 INFO L186 Difference]: Start difference. First operand has 676 places, 514 transitions, 7490 flow. Second operand 37 states and 5917 transitions. [2021-11-20 06:58:57,946 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 688 places, 664 transitions, 12095 flow [2021-11-20 06:58:58,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 664 transitions, 11645 flow, removed 150 selfloop flow, removed 24 redundant places. [2021-11-20 06:58:58,561 INFO L242 Difference]: Finished difference. Result has 688 places, 533 transitions, 8100 flow [2021-11-20 06:58:58,561 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7227, PETRI_DIFFERENCE_MINUEND_PLACES=628, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=514, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=8100, PETRI_PLACES=688, PETRI_TRANSITIONS=533} [2021-11-20 06:58:58,562 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 501 predicate places. [2021-11-20 06:58:58,562 INFO L470 AbstractCegarLoop]: Abstraction has has 688 places, 533 transitions, 8100 flow [2021-11-20 06:58:58,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:58,562 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:58:58,562 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] [2021-11-20 06:58:58,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-20 06:58:58,563 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:58:58,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:58:58,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1674609692, now seen corresponding path program 21 times [2021-11-20 06:58:58,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:58:58,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609822279] [2021-11-20 06:58:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:58:58,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:58:58,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:58:58,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:58:58,738 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:58:58,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609822279] [2021-11-20 06:58:58,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609822279] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:58:58,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:58:58,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:58:58,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465755425] [2021-11-20 06:58:58,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:58:58,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:58:58,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:58:58,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:58:58,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:58:58,741 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:58:58,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 688 places, 533 transitions, 8100 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:58:58,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:58:58,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:58:58,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:00,685 INFO L129 PetriNetUnfolder]: 717/2703 cut-off events. [2021-11-20 06:59:00,685 INFO L130 PetriNetUnfolder]: For 73038/73113 co-relation queries the response was YES. [2021-11-20 06:59:00,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21030 conditions, 2703 events. 717/2703 cut-off events. For 73038/73113 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 21745 event pairs, 287 based on Foata normal form. 15/2634 useless extension candidates. Maximal degree in co-relation 20749. Up to 1042 conditions per place. [2021-11-20 06:59:00,767 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 325 selfloop transitions, 115 changer transitions 73/671 dead transitions. [2021-11-20 06:59:00,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 702 places, 671 transitions, 12480 flow [2021-11-20 06:59:00,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 06:59:00,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 06:59:00,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6077 transitions. [2021-11-20 06:59:00,773 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615288220551378 [2021-11-20 06:59:00,773 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6077 transitions. [2021-11-20 06:59:00,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6077 transitions. [2021-11-20 06:59:00,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:00,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6077 transitions. [2021-11-20 06:59:00,778 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.92105263157896) internal successors, (6077), 38 states have internal predecessors, (6077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:00,782 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:00,783 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:00,783 INFO L186 Difference]: Start difference. First operand has 688 places, 533 transitions, 8100 flow. Second operand 38 states and 6077 transitions. [2021-11-20 06:59:00,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 702 places, 671 transitions, 12480 flow [2021-11-20 06:59:01,427 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 671 transitions, 12043 flow, removed 154 selfloop flow, removed 22 redundant places. [2021-11-20 06:59:01,440 INFO L242 Difference]: Finished difference. Result has 703 places, 537 transitions, 8299 flow [2021-11-20 06:59:01,441 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7854, PETRI_DIFFERENCE_MINUEND_PLACES=643, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=533, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=108, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=420, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8299, PETRI_PLACES=703, PETRI_TRANSITIONS=537} [2021-11-20 06:59:01,441 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 516 predicate places. [2021-11-20 06:59:01,441 INFO L470 AbstractCegarLoop]: Abstraction has has 703 places, 537 transitions, 8299 flow [2021-11-20 06:59:01,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:01,442 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:01,442 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] [2021-11-20 06:59:01,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-20 06:59:01,442 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:01,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:01,442 INFO L85 PathProgramCache]: Analyzing trace with hash 966926234, now seen corresponding path program 22 times [2021-11-20 06:59:01,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:01,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686393311] [2021-11-20 06:59:01,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:01,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:01,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:01,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:01,595 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:01,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686393311] [2021-11-20 06:59:01,595 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686393311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:01,595 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:01,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:01,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54611297] [2021-11-20 06:59:01,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:01,596 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:01,596 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:01,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:01,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:01,599 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:01,601 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 703 places, 537 transitions, 8299 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:01,601 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:01,601 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:01,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:03,314 INFO L129 PetriNetUnfolder]: 705/2674 cut-off events. [2021-11-20 06:59:03,315 INFO L130 PetriNetUnfolder]: For 71126/71173 co-relation queries the response was YES. [2021-11-20 06:59:03,382 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20687 conditions, 2674 events. 705/2674 cut-off events. For 71126/71173 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 21387 event pairs, 291 based on Foata normal form. 9/2597 useless extension candidates. Maximal degree in co-relation 20400. Up to 1047 conditions per place. [2021-11-20 06:59:03,395 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 309 selfloop transitions, 121 changer transitions 62/650 dead transitions. [2021-11-20 06:59:03,395 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 650 transitions, 11900 flow [2021-11-20 06:59:03,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 06:59:03,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 06:59:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2021-11-20 06:59:03,398 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2021-11-20 06:59:03,398 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2021-11-20 06:59:03,398 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2021-11-20 06:59:03,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:03,399 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2021-11-20 06:59:03,401 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:03,405 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:03,405 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:03,406 INFO L186 Difference]: Start difference. First operand has 703 places, 537 transitions, 8299 flow. Second operand 30 states and 4813 transitions. [2021-11-20 06:59:03,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 650 transitions, 11900 flow [2021-11-20 06:59:04,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 650 transitions, 11576 flow, removed 104 selfloop flow, removed 21 redundant places. [2021-11-20 06:59:04,088 INFO L242 Difference]: Finished difference. Result has 701 places, 542 transitions, 8518 flow [2021-11-20 06:59:04,089 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8077, PETRI_DIFFERENCE_MINUEND_PLACES=658, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=418, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8518, PETRI_PLACES=701, PETRI_TRANSITIONS=542} [2021-11-20 06:59:04,089 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 514 predicate places. [2021-11-20 06:59:04,089 INFO L470 AbstractCegarLoop]: Abstraction has has 701 places, 542 transitions, 8518 flow [2021-11-20 06:59:04,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:04,089 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:04,089 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] [2021-11-20 06:59:04,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-20 06:59:04,090 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:04,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:04,090 INFO L85 PathProgramCache]: Analyzing trace with hash -1750997208, now seen corresponding path program 23 times [2021-11-20 06:59:04,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:04,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6090301] [2021-11-20 06:59:04,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:04,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:04,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:04,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:04,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6090301] [2021-11-20 06:59:04,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6090301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:04,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:04,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:04,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708772302] [2021-11-20 06:59:04,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:04,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:04,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:04,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:04,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:04,249 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:04,251 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 701 places, 542 transitions, 8518 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:04,251 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:04,251 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:04,251 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:05,822 INFO L129 PetriNetUnfolder]: 701/2671 cut-off events. [2021-11-20 06:59:05,822 INFO L130 PetriNetUnfolder]: For 70753/70800 co-relation queries the response was YES. [2021-11-20 06:59:05,888 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20585 conditions, 2671 events. 701/2671 cut-off events. For 70753/70800 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 21368 event pairs, 290 based on Foata normal form. 9/2596 useless extension candidates. Maximal degree in co-relation 20302. Up to 1049 conditions per place. [2021-11-20 06:59:05,900 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 322 selfloop transitions, 113 changer transitions 62/655 dead transitions. [2021-11-20 06:59:05,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 655 transitions, 12135 flow [2021-11-20 06:59:05,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 06:59:05,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 06:59:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2021-11-20 06:59:05,904 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2021-11-20 06:59:05,904 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2021-11-20 06:59:05,904 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2021-11-20 06:59:05,904 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:05,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2021-11-20 06:59:05,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:05,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:05,911 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:05,911 INFO L186 Difference]: Start difference. First operand has 701 places, 542 transitions, 8518 flow. Second operand 30 states and 4815 transitions. [2021-11-20 06:59:05,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 655 transitions, 12135 flow [2021-11-20 06:59:06,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 701 places, 655 transitions, 11784 flow, removed 92 selfloop flow, removed 14 redundant places. [2021-11-20 06:59:06,562 INFO L242 Difference]: Finished difference. Result has 715 places, 547 transitions, 8678 flow [2021-11-20 06:59:06,563 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8254, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=542, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=431, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8678, PETRI_PLACES=715, PETRI_TRANSITIONS=547} [2021-11-20 06:59:06,563 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 528 predicate places. [2021-11-20 06:59:06,563 INFO L470 AbstractCegarLoop]: Abstraction has has 715 places, 547 transitions, 8678 flow [2021-11-20 06:59:06,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:06,564 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:06,564 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] [2021-11-20 06:59:06,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-20 06:59:06,565 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:06,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:06,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1373450064, now seen corresponding path program 24 times [2021-11-20 06:59:06,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:06,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111404159] [2021-11-20 06:59:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:06,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:06,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:06,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:06,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111404159] [2021-11-20 06:59:06,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111404159] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:06,728 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:06,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:06,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173727291] [2021-11-20 06:59:06,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:06,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:06,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:06,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:06,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:06,731 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:06,733 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 715 places, 547 transitions, 8678 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:06,733 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:06,733 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:06,733 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:08,281 INFO L129 PetriNetUnfolder]: 693/2642 cut-off events. [2021-11-20 06:59:08,281 INFO L130 PetriNetUnfolder]: For 70023/70093 co-relation queries the response was YES. [2021-11-20 06:59:08,346 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20366 conditions, 2642 events. 693/2642 cut-off events. For 70023/70093 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 21101 event pairs, 286 based on Foata normal form. 15/2576 useless extension candidates. Maximal degree in co-relation 20078. Up to 1046 conditions per place. [2021-11-20 06:59:08,359 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 326 selfloop transitions, 110 changer transitions 64/658 dead transitions. [2021-11-20 06:59:08,359 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 729 places, 658 transitions, 12236 flow [2021-11-20 06:59:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 06:59:08,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 06:59:08,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2021-11-20 06:59:08,361 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2021-11-20 06:59:08,361 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2021-11-20 06:59:08,361 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2021-11-20 06:59:08,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:08,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2021-11-20 06:59:08,365 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:08,368 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:08,368 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:08,368 INFO L186 Difference]: Start difference. First operand has 715 places, 547 transitions, 8678 flow. Second operand 30 states and 4815 transitions. [2021-11-20 06:59:08,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 729 places, 658 transitions, 12236 flow [2021-11-20 06:59:09,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 658 transitions, 11948 flow, removed 95 selfloop flow, removed 14 redundant places. [2021-11-20 06:59:09,019 INFO L242 Difference]: Finished difference. Result has 726 places, 549 transitions, 8756 flow [2021-11-20 06:59:09,019 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8453, PETRI_DIFFERENCE_MINUEND_PLACES=686, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=547, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=439, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=8756, PETRI_PLACES=726, PETRI_TRANSITIONS=549} [2021-11-20 06:59:09,019 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 539 predicate places. [2021-11-20 06:59:09,019 INFO L470 AbstractCegarLoop]: Abstraction has has 726 places, 549 transitions, 8756 flow [2021-11-20 06:59:09,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:09,020 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:09,020 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 06:59:09,020 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-20 06:59:09,020 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:09,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:09,021 INFO L85 PathProgramCache]: Analyzing trace with hash 1441605454, now seen corresponding path program 25 times [2021-11-20 06:59:09,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:09,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626885129] [2021-11-20 06:59:09,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:09,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:09,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:09,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:09,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:09,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626885129] [2021-11-20 06:59:09,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626885129] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:09,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:09,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:09,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959197254] [2021-11-20 06:59:09,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:09,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:09,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:09,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:09,164 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:09,165 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 726 places, 549 transitions, 8756 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:09,165 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:09,165 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:09,166 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:10,676 INFO L129 PetriNetUnfolder]: 666/2578 cut-off events. [2021-11-20 06:59:10,676 INFO L130 PetriNetUnfolder]: For 67721/67791 co-relation queries the response was YES. [2021-11-20 06:59:10,742 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19750 conditions, 2578 events. 666/2578 cut-off events. For 67721/67791 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 20503 event pairs, 286 based on Foata normal form. 15/2516 useless extension candidates. Maximal degree in co-relation 19461. Up to 1032 conditions per place. [2021-11-20 06:59:10,754 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 314 selfloop transitions, 83 changer transitions 66/621 dead transitions. [2021-11-20 06:59:10,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 737 places, 621 transitions, 11224 flow [2021-11-20 06:59:10,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 06:59:10,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-20 06:59:10,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4332 transitions. [2021-11-20 06:59:10,757 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.764021164021164 [2021-11-20 06:59:10,757 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4332 transitions. [2021-11-20 06:59:10,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4332 transitions. [2021-11-20 06:59:10,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:10,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4332 transitions. [2021-11-20 06:59:10,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.44444444444446) internal successors, (4332), 27 states have internal predecessors, (4332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:10,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:10,766 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:10,766 INFO L186 Difference]: Start difference. First operand has 726 places, 549 transitions, 8756 flow. Second operand 27 states and 4332 transitions. [2021-11-20 06:59:10,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 737 places, 621 transitions, 11224 flow [2021-11-20 06:59:11,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 724 places, 621 transitions, 10946 flow, removed 93 selfloop flow, removed 13 redundant places. [2021-11-20 06:59:11,417 INFO L242 Difference]: Finished difference. Result has 731 places, 512 transitions, 7777 flow [2021-11-20 06:59:11,418 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8512, PETRI_DIFFERENCE_MINUEND_PLACES=698, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=549, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=466, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=7777, PETRI_PLACES=731, PETRI_TRANSITIONS=512} [2021-11-20 06:59:11,418 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 544 predicate places. [2021-11-20 06:59:11,418 INFO L470 AbstractCegarLoop]: Abstraction has has 731 places, 512 transitions, 7777 flow [2021-11-20 06:59:11,418 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:11,419 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:11,419 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] [2021-11-20 06:59:11,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-20 06:59:11,419 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:11,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:11,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1732399548, now seen corresponding path program 26 times [2021-11-20 06:59:11,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:11,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065772173] [2021-11-20 06:59:11,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:11,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:11,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:11,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065772173] [2021-11-20 06:59:11,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065772173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:11,576 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:11,577 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:11,577 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068401941] [2021-11-20 06:59:11,577 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:11,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:11,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:11,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:11,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:11,580 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:11,581 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 512 transitions, 7777 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:11,581 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:11,581 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:11,581 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:13,045 INFO L129 PetriNetUnfolder]: 648/2487 cut-off events. [2021-11-20 06:59:13,045 INFO L130 PetriNetUnfolder]: For 66464/66511 co-relation queries the response was YES. [2021-11-20 06:59:13,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19020 conditions, 2487 events. 648/2487 cut-off events. For 66464/66511 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 19484 event pairs, 281 based on Foata normal form. 9/2416 useless extension candidates. Maximal degree in co-relation 18735. Up to 1017 conditions per place. [2021-11-20 06:59:13,115 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 295 selfloop transitions, 77 changer transitions 65/595 dead transitions. [2021-11-20 06:59:13,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 595 transitions, 10454 flow [2021-11-20 06:59:13,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 06:59:13,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-20 06:59:13,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4488 transitions. [2021-11-20 06:59:13,117 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763265306122449 [2021-11-20 06:59:13,117 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4488 transitions. [2021-11-20 06:59:13,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4488 transitions. [2021-11-20 06:59:13,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:13,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4488 transitions. [2021-11-20 06:59:13,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.28571428571428) internal successors, (4488), 28 states have internal predecessors, (4488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:13,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:13,125 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:13,125 INFO L186 Difference]: Start difference. First operand has 731 places, 512 transitions, 7777 flow. Second operand 28 states and 4488 transitions. [2021-11-20 06:59:13,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 595 transitions, 10454 flow [2021-11-20 06:59:13,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 676 places, 595 transitions, 9669 flow, removed 42 selfloop flow, removed 41 redundant places. [2021-11-20 06:59:13,690 INFO L242 Difference]: Finished difference. Result has 685 places, 487 transitions, 6721 flow [2021-11-20 06:59:13,690 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7134, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=435, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6721, PETRI_PLACES=685, PETRI_TRANSITIONS=487} [2021-11-20 06:59:13,690 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 498 predicate places. [2021-11-20 06:59:13,691 INFO L470 AbstractCegarLoop]: Abstraction has has 685 places, 487 transitions, 6721 flow [2021-11-20 06:59:13,691 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:13,691 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:13,691 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] [2021-11-20 06:59:13,692 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-20 06:59:13,692 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:13,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:13,692 INFO L85 PathProgramCache]: Analyzing trace with hash 278991488, now seen corresponding path program 27 times [2021-11-20 06:59:13,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:13,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480613387] [2021-11-20 06:59:13,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:13,693 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:13,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:13,850 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:13,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480613387] [2021-11-20 06:59:13,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480613387] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:13,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:13,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:13,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018364389] [2021-11-20 06:59:13,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:13,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:13,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:13,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:13,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:13,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:13,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 487 transitions, 6721 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:13,855 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:13,855 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:13,855 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:15,306 INFO L129 PetriNetUnfolder]: 640/2479 cut-off events. [2021-11-20 06:59:15,307 INFO L130 PetriNetUnfolder]: For 59317/59362 co-relation queries the response was YES. [2021-11-20 06:59:15,366 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18306 conditions, 2479 events. 640/2479 cut-off events. For 59317/59362 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 19411 event pairs, 284 based on Foata normal form. 9/2410 useless extension candidates. Maximal degree in co-relation 18033. Up to 1017 conditions per place. [2021-11-20 06:59:15,377 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 284 selfloop transitions, 75 changer transitions 64/581 dead transitions. [2021-11-20 06:59:15,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 581 transitions, 9536 flow [2021-11-20 06:59:15,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 06:59:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-11-20 06:59:15,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4644 transitions. [2021-11-20 06:59:15,380 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625615763546798 [2021-11-20 06:59:15,380 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4644 transitions. [2021-11-20 06:59:15,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4644 transitions. [2021-11-20 06:59:15,381 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:15,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4644 transitions. [2021-11-20 06:59:15,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.13793103448276) internal successors, (4644), 29 states have internal predecessors, (4644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:15,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:15,387 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:15,387 INFO L186 Difference]: Start difference. First operand has 685 places, 487 transitions, 6721 flow. Second operand 29 states and 4644 transitions. [2021-11-20 06:59:15,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 581 transitions, 9536 flow [2021-11-20 06:59:15,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 646 places, 581 transitions, 9008 flow, removed 35 selfloop flow, removed 34 redundant places. [2021-11-20 06:59:15,921 INFO L242 Difference]: Finished difference. Result has 657 places, 474 transitions, 6194 flow [2021-11-20 06:59:15,921 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6315, PETRI_DIFFERENCE_MINUEND_PLACES=618, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=487, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=6194, PETRI_PLACES=657, PETRI_TRANSITIONS=474} [2021-11-20 06:59:15,922 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 470 predicate places. [2021-11-20 06:59:15,922 INFO L470 AbstractCegarLoop]: Abstraction has has 657 places, 474 transitions, 6194 flow [2021-11-20 06:59:15,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:15,922 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:15,922 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] [2021-11-20 06:59:15,923 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-20 06:59:15,923 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:15,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:15,923 INFO L85 PathProgramCache]: Analyzing trace with hash 1647824820, now seen corresponding path program 28 times [2021-11-20 06:59:15,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:15,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426826960] [2021-11-20 06:59:15,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:15,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:16,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:16,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:16,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426826960] [2021-11-20 06:59:16,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426826960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:16,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:16,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:16,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015856679] [2021-11-20 06:59:16,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:16,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:16,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:16,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:16,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:16,075 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:16,077 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 474 transitions, 6194 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:16,077 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:16,077 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:16,077 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:17,490 INFO L129 PetriNetUnfolder]: 610/2370 cut-off events. [2021-11-20 06:59:17,490 INFO L130 PetriNetUnfolder]: For 54670/54715 co-relation queries the response was YES. [2021-11-20 06:59:17,540 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17177 conditions, 2370 events. 610/2370 cut-off events. For 54670/54715 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 18241 event pairs, 276 based on Foata normal form. 9/2304 useless extension candidates. Maximal degree in co-relation 16912. Up to 996 conditions per place. [2021-11-20 06:59:17,550 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 260 selfloop transitions, 47 changer transitions 68/533 dead transitions. [2021-11-20 06:59:17,550 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 660 places, 533 transitions, 8099 flow [2021-11-20 06:59:17,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 06:59:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 06:59:17,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4783 transitions. [2021-11-20 06:59:17,553 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7592063492063492 [2021-11-20 06:59:17,553 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4783 transitions. [2021-11-20 06:59:17,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4783 transitions. [2021-11-20 06:59:17,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:17,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4783 transitions. [2021-11-20 06:59:17,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.43333333333334) internal successors, (4783), 30 states have internal predecessors, (4783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:17,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:17,562 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:17,562 INFO L186 Difference]: Start difference. First operand has 657 places, 474 transitions, 6194 flow. Second operand 30 states and 4783 transitions. [2021-11-20 06:59:17,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 660 places, 533 transitions, 8099 flow [2021-11-20 06:59:18,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 630 places, 533 transitions, 7795 flow, removed 23 selfloop flow, removed 30 redundant places. [2021-11-20 06:59:18,031 INFO L242 Difference]: Finished difference. Result has 635 places, 423 transitions, 5003 flow [2021-11-20 06:59:18,032 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5907, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=427, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5003, PETRI_PLACES=635, PETRI_TRANSITIONS=423} [2021-11-20 06:59:18,032 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 448 predicate places. [2021-11-20 06:59:18,032 INFO L470 AbstractCegarLoop]: Abstraction has has 635 places, 423 transitions, 5003 flow [2021-11-20 06:59:18,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:18,032 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:18,033 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] [2021-11-20 06:59:18,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-20 06:59:18,033 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:18,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:18,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1610324814, now seen corresponding path program 29 times [2021-11-20 06:59:18,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:18,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297523165] [2021-11-20 06:59:18,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:18,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:18,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:18,175 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:18,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297523165] [2021-11-20 06:59:18,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297523165] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:18,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:18,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:18,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054631649] [2021-11-20 06:59:18,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:18,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:18,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:18,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:18,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:18,178 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:18,179 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 423 transitions, 5003 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:18,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:18,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:18,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:19,681 INFO L129 PetriNetUnfolder]: 634/2420 cut-off events. [2021-11-20 06:59:19,681 INFO L130 PetriNetUnfolder]: For 57317/57349 co-relation queries the response was YES. [2021-11-20 06:59:19,734 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17753 conditions, 2420 events. 634/2420 cut-off events. For 57317/57349 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 18663 event pairs, 275 based on Foata normal form. 5/2348 useless extension candidates. Maximal degree in co-relation 17500. Up to 996 conditions per place. [2021-11-20 06:59:19,744 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 266 selfloop transitions, 65 changer transitions 66/555 dead transitions. [2021-11-20 06:59:19,744 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 613 places, 555 transitions, 8829 flow [2021-11-20 06:59:19,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 06:59:19,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 06:59:19,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6072 transitions. [2021-11-20 06:59:19,747 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7609022556390977 [2021-11-20 06:59:19,747 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6072 transitions. [2021-11-20 06:59:19,747 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6072 transitions. [2021-11-20 06:59:19,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:19,748 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6072 transitions. [2021-11-20 06:59:19,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.78947368421052) internal successors, (6072), 38 states have internal predecessors, (6072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:19,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:19,756 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:19,757 INFO L186 Difference]: Start difference. First operand has 635 places, 423 transitions, 5003 flow. Second operand 38 states and 6072 transitions. [2021-11-20 06:59:19,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 613 places, 555 transitions, 8829 flow [2021-11-20 06:59:20,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 581 places, 555 transitions, 8074 flow, removed 131 selfloop flow, removed 32 redundant places. [2021-11-20 06:59:20,174 INFO L242 Difference]: Finished difference. Result has 602 places, 441 transitions, 5287 flow [2021-11-20 06:59:20,175 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4602, PETRI_DIFFERENCE_MINUEND_PLACES=544, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=423, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=368, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=5287, PETRI_PLACES=602, PETRI_TRANSITIONS=441} [2021-11-20 06:59:20,175 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 415 predicate places. [2021-11-20 06:59:20,175 INFO L470 AbstractCegarLoop]: Abstraction has has 602 places, 441 transitions, 5287 flow [2021-11-20 06:59:20,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:20,175 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:20,176 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] [2021-11-20 06:59:20,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-20 06:59:20,176 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:20,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:20,176 INFO L85 PathProgramCache]: Analyzing trace with hash -853020034, now seen corresponding path program 30 times [2021-11-20 06:59:20,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:20,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628982268] [2021-11-20 06:59:20,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:20,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:20,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:20,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:20,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:20,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628982268] [2021-11-20 06:59:20,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628982268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:20,348 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:20,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:20,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041889976] [2021-11-20 06:59:20,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:20,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:20,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:20,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:20,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:20,352 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:20,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 602 places, 441 transitions, 5287 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:20,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:20,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:20,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:22,044 INFO L129 PetriNetUnfolder]: 661/2505 cut-off events. [2021-11-20 06:59:22,044 INFO L130 PetriNetUnfolder]: For 57129/57180 co-relation queries the response was YES. [2021-11-20 06:59:22,090 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18213 conditions, 2505 events. 661/2505 cut-off events. For 57129/57180 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 19555 event pairs, 294 based on Foata normal form. 9/2435 useless extension candidates. Maximal degree in co-relation 17960. Up to 996 conditions per place. [2021-11-20 06:59:22,100 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 272 selfloop transitions, 76 changer transitions 66/572 dead transitions. [2021-11-20 06:59:22,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 572 transitions, 9123 flow [2021-11-20 06:59:22,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 06:59:22,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-20 06:59:22,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5604 transitions. [2021-11-20 06:59:22,104 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624489795918368 [2021-11-20 06:59:22,104 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5604 transitions. [2021-11-20 06:59:22,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5604 transitions. [2021-11-20 06:59:22,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:22,105 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5604 transitions. [2021-11-20 06:59:22,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.11428571428573) internal successors, (5604), 35 states have internal predecessors, (5604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:22,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:22,112 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:22,112 INFO L186 Difference]: Start difference. First operand has 602 places, 441 transitions, 5287 flow. Second operand 35 states and 5604 transitions. [2021-11-20 06:59:22,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 572 transitions, 9123 flow [2021-11-20 06:59:22,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 596 places, 572 transitions, 8566 flow, removed 242 selfloop flow, removed 16 redundant places. [2021-11-20 06:59:22,539 INFO L242 Difference]: Finished difference. Result has 622 places, 460 transitions, 5765 flow [2021-11-20 06:59:22,539 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5049, PETRI_DIFFERENCE_MINUEND_PLACES=562, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=441, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=375, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=5765, PETRI_PLACES=622, PETRI_TRANSITIONS=460} [2021-11-20 06:59:22,540 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 435 predicate places. [2021-11-20 06:59:22,540 INFO L470 AbstractCegarLoop]: Abstraction has has 622 places, 460 transitions, 5765 flow [2021-11-20 06:59:22,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:22,540 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:22,540 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] [2021-11-20 06:59:22,541 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-20 06:59:22,541 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:22,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:22,541 INFO L85 PathProgramCache]: Analyzing trace with hash 418332166, now seen corresponding path program 31 times [2021-11-20 06:59:22,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:22,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796265356] [2021-11-20 06:59:22,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:22,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:22,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:22,683 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:22,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796265356] [2021-11-20 06:59:22,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796265356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:22,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:22,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:22,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622872001] [2021-11-20 06:59:22,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:22,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:22,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:22,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:22,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:22,686 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:22,687 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 622 places, 460 transitions, 5765 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:22,687 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:22,687 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:22,687 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:24,288 INFO L129 PetriNetUnfolder]: 684/2580 cut-off events. [2021-11-20 06:59:24,289 INFO L130 PetriNetUnfolder]: For 62191/62224 co-relation queries the response was YES. [2021-11-20 06:59:24,348 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19235 conditions, 2580 events. 684/2580 cut-off events. For 62191/62224 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 20338 event pairs, 292 based on Foata normal form. 5/2504 useless extension candidates. Maximal degree in co-relation 18970. Up to 996 conditions per place. [2021-11-20 06:59:24,360 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 286 selfloop transitions, 80 changer transitions 66/590 dead transitions. [2021-11-20 06:59:24,360 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 590 transitions, 9755 flow [2021-11-20 06:59:24,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 06:59:24,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-20 06:59:24,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5918 transitions. [2021-11-20 06:59:24,363 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616473616473617 [2021-11-20 06:59:24,364 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5918 transitions. [2021-11-20 06:59:24,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5918 transitions. [2021-11-20 06:59:24,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:24,365 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5918 transitions. [2021-11-20 06:59:24,368 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 159.94594594594594) internal successors, (5918), 37 states have internal predecessors, (5918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:24,372 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:24,373 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:24,373 INFO L186 Difference]: Start difference. First operand has 622 places, 460 transitions, 5765 flow. Second operand 37 states and 5918 transitions. [2021-11-20 06:59:24,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 590 transitions, 9755 flow [2021-11-20 06:59:24,894 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 618 places, 590 transitions, 9260 flow, removed 189 selfloop flow, removed 19 redundant places. [2021-11-20 06:59:24,902 INFO L242 Difference]: Finished difference. Result has 643 places, 477 transitions, 6287 flow [2021-11-20 06:59:24,902 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5564, PETRI_DIFFERENCE_MINUEND_PLACES=582, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=460, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=387, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=6287, PETRI_PLACES=643, PETRI_TRANSITIONS=477} [2021-11-20 06:59:24,903 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 456 predicate places. [2021-11-20 06:59:24,903 INFO L470 AbstractCegarLoop]: Abstraction has has 643 places, 477 transitions, 6287 flow [2021-11-20 06:59:24,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:24,903 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:24,903 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] [2021-11-20 06:59:24,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-20 06:59:24,903 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:24,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:24,904 INFO L85 PathProgramCache]: Analyzing trace with hash -975128430, now seen corresponding path program 32 times [2021-11-20 06:59:24,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:24,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812657062] [2021-11-20 06:59:24,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:24,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:25,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:25,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:25,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812657062] [2021-11-20 06:59:25,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812657062] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:25,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:25,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:25,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735777725] [2021-11-20 06:59:25,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:25,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:25,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:25,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:25,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:25,070 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:25,072 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 643 places, 477 transitions, 6287 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:25,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:25,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:25,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:26,741 INFO L129 PetriNetUnfolder]: 678/2564 cut-off events. [2021-11-20 06:59:26,741 INFO L130 PetriNetUnfolder]: For 62819/62871 co-relation queries the response was YES. [2021-11-20 06:59:26,801 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19164 conditions, 2564 events. 678/2564 cut-off events. For 62819/62871 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 20201 event pairs, 306 based on Foata normal form. 9/2490 useless extension candidates. Maximal degree in co-relation 18890. Up to 996 conditions per place. [2021-11-20 06:59:26,962 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 289 selfloop transitions, 84 changer transitions 68/599 dead transitions. [2021-11-20 06:59:26,962 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 655 places, 599 transitions, 10164 flow [2021-11-20 06:59:26,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 06:59:26,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-11-20 06:59:26,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2021-11-20 06:59:26,965 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2021-11-20 06:59:26,965 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2021-11-20 06:59:26,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2021-11-20 06:59:26,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:26,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2021-11-20 06:59:26,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:26,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:26,974 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:26,974 INFO L186 Difference]: Start difference. First operand has 643 places, 477 transitions, 6287 flow. Second operand 36 states and 5763 transitions. [2021-11-20 06:59:26,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 655 places, 599 transitions, 10164 flow [2021-11-20 06:59:27,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 636 places, 599 transitions, 9753 flow, removed 169 selfloop flow, removed 19 redundant places. [2021-11-20 06:59:27,488 INFO L242 Difference]: Finished difference. Result has 660 places, 486 transitions, 6666 flow [2021-11-20 06:59:27,488 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6111, PETRI_DIFFERENCE_MINUEND_PLACES=601, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=477, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=6666, PETRI_PLACES=660, PETRI_TRANSITIONS=486} [2021-11-20 06:59:27,488 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 473 predicate places. [2021-11-20 06:59:27,489 INFO L470 AbstractCegarLoop]: Abstraction has has 660 places, 486 transitions, 6666 flow [2021-11-20 06:59:27,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:27,489 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:27,489 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] [2021-11-20 06:59:27,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-20 06:59:27,489 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:27,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:27,490 INFO L85 PathProgramCache]: Analyzing trace with hash 472831676, now seen corresponding path program 33 times [2021-11-20 06:59:27,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:27,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227203786] [2021-11-20 06:59:27,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:27,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:27,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:27,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:27,637 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:27,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227203786] [2021-11-20 06:59:27,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227203786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:27,637 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:27,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:27,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457307171] [2021-11-20 06:59:27,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:27,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:27,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:27,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:27,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:27,640 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:27,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 486 transitions, 6666 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:27,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:27,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:27,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:29,495 INFO L129 PetriNetUnfolder]: 719/2727 cut-off events. [2021-11-20 06:59:29,496 INFO L130 PetriNetUnfolder]: For 68660/68712 co-relation queries the response was YES. [2021-11-20 06:59:29,563 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20511 conditions, 2727 events. 719/2727 cut-off events. For 68660/68712 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 21985 event pairs, 290 based on Foata normal form. 9/2660 useless extension candidates. Maximal degree in co-relation 20230. Up to 998 conditions per place. [2021-11-20 06:59:29,575 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 315 selfloop transitions, 107 changer transitions 85/665 dead transitions. [2021-11-20 06:59:29,575 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 665 transitions, 11716 flow [2021-11-20 06:59:29,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-20 06:59:29,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-11-20 06:59:29,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7340 transitions. [2021-11-20 06:59:29,578 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598343685300207 [2021-11-20 06:59:29,579 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7340 transitions. [2021-11-20 06:59:29,579 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7340 transitions. [2021-11-20 06:59:29,580 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:29,580 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7340 transitions. [2021-11-20 06:59:29,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.56521739130434) internal successors, (7340), 46 states have internal predecessors, (7340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:29,588 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:29,590 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:29,590 INFO L186 Difference]: Start difference. First operand has 660 places, 486 transitions, 6666 flow. Second operand 46 states and 7340 transitions. [2021-11-20 06:59:29,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 665 transitions, 11716 flow [2021-11-20 06:59:30,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 664 places, 665 transitions, 11223 flow, removed 152 selfloop flow, removed 19 redundant places. [2021-11-20 06:59:30,170 INFO L242 Difference]: Finished difference. Result has 697 places, 512 transitions, 7287 flow [2021-11-20 06:59:30,170 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6386, PETRI_DIFFERENCE_MINUEND_PLACES=619, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=486, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=397, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=7287, PETRI_PLACES=697, PETRI_TRANSITIONS=512} [2021-11-20 06:59:30,171 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 510 predicate places. [2021-11-20 06:59:30,171 INFO L470 AbstractCegarLoop]: Abstraction has has 697 places, 512 transitions, 7287 flow [2021-11-20 06:59:30,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:30,171 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:30,171 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] [2021-11-20 06:59:30,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-20 06:59:30,172 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:30,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:30,172 INFO L85 PathProgramCache]: Analyzing trace with hash 597195852, now seen corresponding path program 34 times [2021-11-20 06:59:30,172 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:30,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140855586] [2021-11-20 06:59:30,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:30,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:30,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:30,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140855586] [2021-11-20 06:59:30,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140855586] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:30,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:30,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:30,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812773731] [2021-11-20 06:59:30,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:30,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:30,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:30,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:30,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:30,331 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:30,332 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 697 places, 512 transitions, 7287 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:30,333 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:30,333 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:30,333 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:32,346 INFO L129 PetriNetUnfolder]: 732/2780 cut-off events. [2021-11-20 06:59:32,346 INFO L130 PetriNetUnfolder]: For 69022/69055 co-relation queries the response was YES. [2021-11-20 06:59:32,409 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20983 conditions, 2780 events. 732/2780 cut-off events. For 69022/69055 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 22601 event pairs, 313 based on Foata normal form. 5/2701 useless extension candidates. Maximal degree in co-relation 20686. Up to 1019 conditions per place. [2021-11-20 06:59:32,422 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 300 selfloop transitions, 119 changer transitions 82/659 dead transitions. [2021-11-20 06:59:32,422 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 708 places, 659 transitions, 11648 flow [2021-11-20 06:59:32,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-20 06:59:32,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-11-20 06:59:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7186 transitions. [2021-11-20 06:59:32,425 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604232804232804 [2021-11-20 06:59:32,425 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7186 transitions. [2021-11-20 06:59:32,425 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7186 transitions. [2021-11-20 06:59:32,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:32,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7186 transitions. [2021-11-20 06:59:32,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.6888888888889) internal successors, (7186), 45 states have internal predecessors, (7186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:32,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:32,437 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:32,437 INFO L186 Difference]: Start difference. First operand has 697 places, 512 transitions, 7287 flow. Second operand 45 states and 7186 transitions. [2021-11-20 06:59:32,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 708 places, 659 transitions, 11648 flow [2021-11-20 06:59:33,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 659 transitions, 11286 flow, removed 150 selfloop flow, removed 28 redundant places. [2021-11-20 06:59:33,092 INFO L242 Difference]: Finished difference. Result has 714 places, 529 transitions, 7921 flow [2021-11-20 06:59:33,093 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7134, PETRI_DIFFERENCE_MINUEND_PLACES=636, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=512, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=404, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=7921, PETRI_PLACES=714, PETRI_TRANSITIONS=529} [2021-11-20 06:59:33,093 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 527 predicate places. [2021-11-20 06:59:33,093 INFO L470 AbstractCegarLoop]: Abstraction has has 714 places, 529 transitions, 7921 flow [2021-11-20 06:59:33,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:33,093 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:33,093 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] [2021-11-20 06:59:33,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-20 06:59:33,094 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:33,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:33,094 INFO L85 PathProgramCache]: Analyzing trace with hash -2120455794, now seen corresponding path program 35 times [2021-11-20 06:59:33,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:33,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872861613] [2021-11-20 06:59:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:33,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:33,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:33,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:33,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:33,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872861613] [2021-11-20 06:59:33,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872861613] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:33,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:33,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:33,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861509240] [2021-11-20 06:59:33,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:33,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:33,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:33,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:33,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:33,240 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:33,241 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 714 places, 529 transitions, 7921 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:33,241 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:33,241 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:33,241 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:35,369 INFO L129 PetriNetUnfolder]: 726/2757 cut-off events. [2021-11-20 06:59:35,369 INFO L130 PetriNetUnfolder]: For 73004/73037 co-relation queries the response was YES. [2021-11-20 06:59:35,450 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21114 conditions, 2757 events. 726/2757 cut-off events. For 73004/73037 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 22356 event pairs, 293 based on Foata normal form. 5/2681 useless extension candidates. Maximal degree in co-relation 20809. Up to 1015 conditions per place. [2021-11-20 06:59:35,463 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 323 selfloop transitions, 113 changer transitions 94/688 dead transitions. [2021-11-20 06:59:35,464 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 725 places, 688 transitions, 12784 flow [2021-11-20 06:59:35,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-20 06:59:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-11-20 06:59:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7025 transitions. [2021-11-20 06:59:35,467 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602813852813853 [2021-11-20 06:59:35,467 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7025 transitions. [2021-11-20 06:59:35,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7025 transitions. [2021-11-20 06:59:35,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:35,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7025 transitions. [2021-11-20 06:59:35,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6590909090909) internal successors, (7025), 44 states have internal predecessors, (7025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:35,477 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:35,478 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:35,478 INFO L186 Difference]: Start difference. First operand has 714 places, 529 transitions, 7921 flow. Second operand 44 states and 7025 transitions. [2021-11-20 06:59:35,478 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 725 places, 688 transitions, 12784 flow [2021-11-20 06:59:36,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 694 places, 688 transitions, 12338 flow, removed 162 selfloop flow, removed 31 redundant places. [2021-11-20 06:59:36,138 INFO L242 Difference]: Finished difference. Result has 727 places, 537 transitions, 8287 flow [2021-11-20 06:59:36,139 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7664, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=529, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=422, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=8287, PETRI_PLACES=727, PETRI_TRANSITIONS=537} [2021-11-20 06:59:36,139 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 540 predicate places. [2021-11-20 06:59:36,139 INFO L470 AbstractCegarLoop]: Abstraction has has 727 places, 537 transitions, 8287 flow [2021-11-20 06:59:36,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:36,139 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:36,139 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] [2021-11-20 06:59:36,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-20 06:59:36,140 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:36,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:36,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1738553676, now seen corresponding path program 36 times [2021-11-20 06:59:36,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:36,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902223665] [2021-11-20 06:59:36,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:36,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:36,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:36,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:36,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:36,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902223665] [2021-11-20 06:59:36,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902223665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:36,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:36,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:36,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674042654] [2021-11-20 06:59:36,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:36,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:36,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:36,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:36,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:36,316 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:36,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 537 transitions, 8287 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:36,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:36,318 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:36,318 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:38,493 INFO L129 PetriNetUnfolder]: 744/2787 cut-off events. [2021-11-20 06:59:38,493 INFO L130 PetriNetUnfolder]: For 72718/72751 co-relation queries the response was YES. [2021-11-20 06:59:38,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21477 conditions, 2787 events. 744/2787 cut-off events. For 72718/72751 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 22576 event pairs, 322 based on Foata normal form. 5/2700 useless extension candidates. Maximal degree in co-relation 21167. Up to 1037 conditions per place. [2021-11-20 06:59:38,586 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 309 selfloop transitions, 130 changer transitions 70/667 dead transitions. [2021-11-20 06:59:38,586 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 667 transitions, 12273 flow [2021-11-20 06:59:38,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 06:59:38,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 06:59:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6084 transitions. [2021-11-20 06:59:38,589 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762406015037594 [2021-11-20 06:59:38,589 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6084 transitions. [2021-11-20 06:59:38,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6084 transitions. [2021-11-20 06:59:38,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:38,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6084 transitions. [2021-11-20 06:59:38,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.10526315789474) internal successors, (6084), 38 states have internal predecessors, (6084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:38,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:38,599 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:38,599 INFO L186 Difference]: Start difference. First operand has 727 places, 537 transitions, 8287 flow. Second operand 38 states and 6084 transitions. [2021-11-20 06:59:38,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 733 places, 667 transitions, 12273 flow [2021-11-20 06:59:39,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 697 places, 667 transitions, 11744 flow, removed 144 selfloop flow, removed 36 redundant places. [2021-11-20 06:59:39,325 INFO L242 Difference]: Finished difference. Result has 720 places, 557 transitions, 8782 flow [2021-11-20 06:59:39,326 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7901, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=537, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=419, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=8782, PETRI_PLACES=720, PETRI_TRANSITIONS=557} [2021-11-20 06:59:39,326 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 533 predicate places. [2021-11-20 06:59:39,326 INFO L470 AbstractCegarLoop]: Abstraction has has 720 places, 557 transitions, 8782 flow [2021-11-20 06:59:39,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:39,327 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:39,327 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] [2021-11-20 06:59:39,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-20 06:59:39,327 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:39,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:39,327 INFO L85 PathProgramCache]: Analyzing trace with hash -337173780, now seen corresponding path program 37 times [2021-11-20 06:59:39,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:39,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965945466] [2021-11-20 06:59:39,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:39,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:39,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:39,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:39,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:39,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965945466] [2021-11-20 06:59:39,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965945466] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:39,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:39,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:39,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707644987] [2021-11-20 06:59:39,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:39,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:39,481 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:39,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:39,483 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:39,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 557 transitions, 8782 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:39,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:39,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:39,484 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:41,460 INFO L129 PetriNetUnfolder]: 739/2797 cut-off events. [2021-11-20 06:59:41,460 INFO L130 PetriNetUnfolder]: For 71578/71630 co-relation queries the response was YES. [2021-11-20 06:59:41,543 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21439 conditions, 2797 events. 739/2797 cut-off events. For 71578/71630 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 22791 event pairs, 287 based on Foata normal form. 9/2724 useless extension candidates. Maximal degree in co-relation 21138. Up to 1033 conditions per place. [2021-11-20 06:59:41,557 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 128 changer transitions 75/689 dead transitions. [2021-11-20 06:59:41,557 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 733 places, 689 transitions, 12931 flow [2021-11-20 06:59:41,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 06:59:41,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 06:59:41,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6078 transitions. [2021-11-20 06:59:41,560 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7616541353383459 [2021-11-20 06:59:41,560 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6078 transitions. [2021-11-20 06:59:41,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6078 transitions. [2021-11-20 06:59:41,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:41,562 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6078 transitions. [2021-11-20 06:59:41,565 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.94736842105263) internal successors, (6078), 38 states have internal predecessors, (6078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:41,569 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:41,570 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:41,570 INFO L186 Difference]: Start difference. First operand has 720 places, 557 transitions, 8782 flow. Second operand 38 states and 6078 transitions. [2021-11-20 06:59:41,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 733 places, 689 transitions, 12931 flow [2021-11-20 06:59:42,255 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 713 places, 689 transitions, 12572 flow, removed 124 selfloop flow, removed 20 redundant places. [2021-11-20 06:59:42,266 INFO L242 Difference]: Finished difference. Result has 736 places, 563 transitions, 9088 flow [2021-11-20 06:59:42,266 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8554, PETRI_DIFFERENCE_MINUEND_PLACES=676, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=557, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9088, PETRI_PLACES=736, PETRI_TRANSITIONS=563} [2021-11-20 06:59:42,267 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 549 predicate places. [2021-11-20 06:59:42,267 INFO L470 AbstractCegarLoop]: Abstraction has has 736 places, 563 transitions, 9088 flow [2021-11-20 06:59:42,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:42,267 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:42,268 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] [2021-11-20 06:59:42,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-20 06:59:42,268 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:42,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:42,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1271337862, now seen corresponding path program 38 times [2021-11-20 06:59:42,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:42,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711172930] [2021-11-20 06:59:42,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:42,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:42,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:42,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:42,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711172930] [2021-11-20 06:59:42,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711172930] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:42,439 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:42,439 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:42,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355237527] [2021-11-20 06:59:42,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:42,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:42,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:42,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:42,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:42,442 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:42,443 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 736 places, 563 transitions, 9088 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:42,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:42,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:42,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:44,573 INFO L129 PetriNetUnfolder]: 761/2847 cut-off events. [2021-11-20 06:59:44,573 INFO L130 PetriNetUnfolder]: For 73922/73955 co-relation queries the response was YES. [2021-11-20 06:59:44,654 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22066 conditions, 2847 events. 761/2847 cut-off events. For 73922/73955 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 23259 event pairs, 317 based on Foata normal form. 5/2758 useless extension candidates. Maximal degree in co-relation 21759. Up to 1046 conditions per place. [2021-11-20 06:59:44,668 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 331 selfloop transitions, 132 changer transitions 70/691 dead transitions. [2021-11-20 06:59:44,668 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 748 places, 691 transitions, 13162 flow [2021-11-20 06:59:44,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 06:59:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-20 06:59:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5926 transitions. [2021-11-20 06:59:44,672 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626769626769627 [2021-11-20 06:59:44,672 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5926 transitions. [2021-11-20 06:59:44,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5926 transitions. [2021-11-20 06:59:44,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:44,673 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5926 transitions. [2021-11-20 06:59:44,676 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.16216216216216) internal successors, (5926), 37 states have internal predecessors, (5926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:44,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:44,681 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:44,681 INFO L186 Difference]: Start difference. First operand has 736 places, 563 transitions, 9088 flow. Second operand 37 states and 5926 transitions. [2021-11-20 06:59:44,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 748 places, 691 transitions, 13162 flow [2021-11-20 06:59:45,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 727 places, 691 transitions, 12845 flow, removed 105 selfloop flow, removed 21 redundant places. [2021-11-20 06:59:45,431 INFO L242 Difference]: Finished difference. Result has 751 places, 582 transitions, 9775 flow [2021-11-20 06:59:45,432 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8858, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=563, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9775, PETRI_PLACES=751, PETRI_TRANSITIONS=582} [2021-11-20 06:59:45,432 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 564 predicate places. [2021-11-20 06:59:45,432 INFO L470 AbstractCegarLoop]: Abstraction has has 751 places, 582 transitions, 9775 flow [2021-11-20 06:59:45,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:45,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:45,432 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] [2021-11-20 06:59:45,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-20 06:59:45,433 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:45,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:45,433 INFO L85 PathProgramCache]: Analyzing trace with hash -491498170, now seen corresponding path program 39 times [2021-11-20 06:59:45,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:45,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622560421] [2021-11-20 06:59:45,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:45,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:45,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:45,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:45,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:45,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622560421] [2021-11-20 06:59:45,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622560421] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:45,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:45,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:45,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816154010] [2021-11-20 06:59:45,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:45,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:45,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:45,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:45,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:45,583 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:45,584 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 751 places, 582 transitions, 9775 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:45,584 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:45,584 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:45,584 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:47,685 INFO L129 PetriNetUnfolder]: 755/2828 cut-off events. [2021-11-20 06:59:47,685 INFO L130 PetriNetUnfolder]: For 75162/75195 co-relation queries the response was YES. [2021-11-20 06:59:47,772 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22129 conditions, 2828 events. 755/2828 cut-off events. For 75162/75195 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 23035 event pairs, 315 based on Foata normal form. 5/2739 useless extension candidates. Maximal degree in co-relation 21816. Up to 1042 conditions per place. [2021-11-20 06:59:47,786 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 324 selfloop transitions, 140 changer transitions 72/694 dead transitions. [2021-11-20 06:59:47,786 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 764 places, 694 transitions, 13460 flow [2021-11-20 06:59:47,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 06:59:47,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-20 06:59:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5924 transitions. [2021-11-20 06:59:47,789 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7624195624195624 [2021-11-20 06:59:47,790 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5924 transitions. [2021-11-20 06:59:47,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5924 transitions. [2021-11-20 06:59:47,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:47,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5924 transitions. [2021-11-20 06:59:47,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.1081081081081) internal successors, (5924), 37 states have internal predecessors, (5924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:47,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:47,799 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:47,799 INFO L186 Difference]: Start difference. First operand has 751 places, 582 transitions, 9775 flow. Second operand 37 states and 5924 transitions. [2021-11-20 06:59:47,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 764 places, 694 transitions, 13460 flow [2021-11-20 06:59:48,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 743 places, 694 transitions, 13090 flow, removed 117 selfloop flow, removed 21 redundant places. [2021-11-20 06:59:48,571 INFO L242 Difference]: Finished difference. Result has 767 places, 586 transitions, 10011 flow [2021-11-20 06:59:48,572 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9498, PETRI_DIFFERENCE_MINUEND_PLACES=707, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=582, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=10011, PETRI_PLACES=767, PETRI_TRANSITIONS=586} [2021-11-20 06:59:48,572 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 580 predicate places. [2021-11-20 06:59:48,572 INFO L470 AbstractCegarLoop]: Abstraction has has 767 places, 586 transitions, 10011 flow [2021-11-20 06:59:48,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:48,572 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:48,572 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] [2021-11-20 06:59:48,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-20 06:59:48,573 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:48,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:48,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1495044838, now seen corresponding path program 40 times [2021-11-20 06:59:48,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:48,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533224658] [2021-11-20 06:59:48,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:48,574 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:48,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:48,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:48,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533224658] [2021-11-20 06:59:48,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533224658] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:48,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:48,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:48,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901074177] [2021-11-20 06:59:48,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:48,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:48,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:48,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:48,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:48,739 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:48,740 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 767 places, 586 transitions, 10011 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:48,741 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:48,741 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:48,741 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:50,912 INFO L129 PetriNetUnfolder]: 762/2884 cut-off events. [2021-11-20 06:59:50,912 INFO L130 PetriNetUnfolder]: For 76547/76599 co-relation queries the response was YES. [2021-11-20 06:59:51,016 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22553 conditions, 2884 events. 762/2884 cut-off events. For 76547/76599 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23739 event pairs, 316 based on Foata normal form. 9/2803 useless extension candidates. Maximal degree in co-relation 22233. Up to 1055 conditions per place. [2021-11-20 06:59:51,031 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 334 selfloop transitions, 148 changer transitions 77/717 dead transitions. [2021-11-20 06:59:51,032 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 779 places, 717 transitions, 14330 flow [2021-11-20 06:59:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 06:59:51,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-11-20 06:59:51,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5763 transitions. [2021-11-20 06:59:51,035 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623015873015873 [2021-11-20 06:59:51,035 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5763 transitions. [2021-11-20 06:59:51,035 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5763 transitions. [2021-11-20 06:59:51,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:51,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5763 transitions. [2021-11-20 06:59:51,040 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.08333333333334) internal successors, (5763), 36 states have internal predecessors, (5763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:51,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:51,045 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:51,045 INFO L186 Difference]: Start difference. First operand has 767 places, 586 transitions, 10011 flow. Second operand 36 states and 5763 transitions. [2021-11-20 06:59:51,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 779 places, 717 transitions, 14330 flow [2021-11-20 06:59:51,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 717 transitions, 13955 flow, removed 102 selfloop flow, removed 23 redundant places. [2021-11-20 06:59:51,835 INFO L242 Difference]: Finished difference. Result has 779 places, 602 transitions, 10598 flow [2021-11-20 06:59:51,836 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9721, PETRI_DIFFERENCE_MINUEND_PLACES=721, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=586, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=449, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=10598, PETRI_PLACES=779, PETRI_TRANSITIONS=602} [2021-11-20 06:59:51,836 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 592 predicate places. [2021-11-20 06:59:51,836 INFO L470 AbstractCegarLoop]: Abstraction has has 779 places, 602 transitions, 10598 flow [2021-11-20 06:59:51,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:51,837 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:51,837 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] [2021-11-20 06:59:51,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-20 06:59:51,837 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:51,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:51,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1839589416, now seen corresponding path program 41 times [2021-11-20 06:59:51,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:51,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366925169] [2021-11-20 06:59:51,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:51,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:52,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:52,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366925169] [2021-11-20 06:59:52,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366925169] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:52,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:52,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:52,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540806961] [2021-11-20 06:59:52,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:52,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:52,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:52,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:52,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:52,022 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:52,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 779 places, 602 transitions, 10598 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:52,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:52,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:52,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:54,572 INFO L129 PetriNetUnfolder]: 758/2890 cut-off events. [2021-11-20 06:59:54,573 INFO L130 PetriNetUnfolder]: For 77688/77721 co-relation queries the response was YES. [2021-11-20 06:59:54,644 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22604 conditions, 2890 events. 758/2890 cut-off events. For 77688/77721 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23864 event pairs, 298 based on Foata normal form. 5/2811 useless extension candidates. Maximal degree in co-relation 22280. Up to 1051 conditions per place. [2021-11-20 06:59:54,658 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 356 selfloop transitions, 136 changer transitions 75/725 dead transitions. [2021-11-20 06:59:54,658 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 794 places, 725 transitions, 14770 flow [2021-11-20 06:59:54,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 06:59:54,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 06:59:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6080 transitions. [2021-11-20 06:59:54,661 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7619047619047619 [2021-11-20 06:59:54,661 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6080 transitions. [2021-11-20 06:59:54,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6080 transitions. [2021-11-20 06:59:54,662 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:54,662 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6080 transitions. [2021-11-20 06:59:54,666 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.0) internal successors, (6080), 38 states have internal predecessors, (6080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:54,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:54,671 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:54,671 INFO L186 Difference]: Start difference. First operand has 779 places, 602 transitions, 10598 flow. Second operand 38 states and 6080 transitions. [2021-11-20 06:59:54,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 794 places, 725 transitions, 14770 flow [2021-11-20 06:59:55,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 770 places, 725 transitions, 14221 flow, removed 144 selfloop flow, removed 24 redundant places. [2021-11-20 06:59:55,473 INFO L242 Difference]: Finished difference. Result has 792 places, 606 transitions, 10676 flow [2021-11-20 06:59:55,473 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10185, PETRI_DIFFERENCE_MINUEND_PLACES=733, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=602, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10676, PETRI_PLACES=792, PETRI_TRANSITIONS=606} [2021-11-20 06:59:55,474 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 605 predicate places. [2021-11-20 06:59:55,474 INFO L470 AbstractCegarLoop]: Abstraction has has 792 places, 606 transitions, 10676 flow [2021-11-20 06:59:55,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:55,474 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:55,474 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] [2021-11-20 06:59:55,474 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-20 06:59:55,474 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:55,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:55,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1439662436, now seen corresponding path program 42 times [2021-11-20 06:59:55,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:55,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396790113] [2021-11-20 06:59:55,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:55,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:55,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:55,611 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:55,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396790113] [2021-11-20 06:59:55,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396790113] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:55,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:55,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:55,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078995197] [2021-11-20 06:59:55,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:55,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:55,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:55,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:55,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:55,613 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:55,614 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 792 places, 606 transitions, 10676 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:55,614 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:55,615 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:55,615 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 06:59:57,715 INFO L129 PetriNetUnfolder]: 758/2865 cut-off events. [2021-11-20 06:59:57,715 INFO L130 PetriNetUnfolder]: For 75595/75647 co-relation queries the response was YES. [2021-11-20 06:59:57,816 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22444 conditions, 2865 events. 758/2865 cut-off events. For 75595/75647 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23573 event pairs, 315 based on Foata normal form. 9/2779 useless extension candidates. Maximal degree in co-relation 22117. Up to 1063 conditions per place. [2021-11-20 06:59:57,832 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 330 selfloop transitions, 157 changer transitions 60/705 dead transitions. [2021-11-20 06:59:57,832 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 796 places, 705 transitions, 14114 flow [2021-11-20 06:59:57,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 06:59:57,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-11-20 06:59:57,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2021-11-20 06:59:57,835 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2021-11-20 06:59:57,835 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2021-11-20 06:59:57,835 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2021-11-20 06:59:57,836 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 06:59:57,836 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2021-11-20 06:59:57,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:57,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:57,844 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:57,844 INFO L186 Difference]: Start difference. First operand has 792 places, 606 transitions, 10676 flow. Second operand 29 states and 4662 transitions. [2021-11-20 06:59:57,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 796 places, 705 transitions, 14114 flow [2021-11-20 06:59:58,655 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 771 places, 705 transitions, 13701 flow, removed 112 selfloop flow, removed 25 redundant places. [2021-11-20 06:59:58,667 INFO L242 Difference]: Finished difference. Result has 785 places, 618 transitions, 11060 flow [2021-11-20 06:59:58,668 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10342, PETRI_DIFFERENCE_MINUEND_PLACES=743, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=145, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11060, PETRI_PLACES=785, PETRI_TRANSITIONS=618} [2021-11-20 06:59:58,668 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 598 predicate places. [2021-11-20 06:59:58,668 INFO L470 AbstractCegarLoop]: Abstraction has has 785 places, 618 transitions, 11060 flow [2021-11-20 06:59:58,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:58,669 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 06:59:58,669 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] [2021-11-20 06:59:58,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-20 06:59:58,669 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 06:59:58,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:59:58,669 INFO L85 PathProgramCache]: Analyzing trace with hash 284897118, now seen corresponding path program 43 times [2021-11-20 06:59:58,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:59:58,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628992124] [2021-11-20 06:59:58,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:59:58,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:59:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 06:59:58,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 06:59:58,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 06:59:58,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628992124] [2021-11-20 06:59:58,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628992124] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 06:59:58,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 06:59:58,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 06:59:58,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076381505] [2021-11-20 06:59:58,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 06:59:58,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 06:59:58,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 06:59:58,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 06:59:58,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 06:59:58,813 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 06:59:58,814 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 785 places, 618 transitions, 11060 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 06:59:58,814 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 06:59:58,814 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 06:59:58,814 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:00,961 INFO L129 PetriNetUnfolder]: 754/2882 cut-off events. [2021-11-20 07:00:00,961 INFO L130 PetriNetUnfolder]: For 75037/75070 co-relation queries the response was YES. [2021-11-20 07:00:01,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22411 conditions, 2882 events. 754/2882 cut-off events. For 75037/75070 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 23760 event pairs, 304 based on Foata normal form. 5/2800 useless extension candidates. Maximal degree in co-relation 22092. Up to 1060 conditions per place. [2021-11-20 07:00:01,064 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 356 selfloop transitions, 141 changer transitions 64/719 dead transitions. [2021-11-20 07:00:01,064 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 800 places, 719 transitions, 14525 flow [2021-11-20 07:00:01,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:00:01,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:00:01,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4818 transitions. [2021-11-20 07:00:01,068 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7647619047619048 [2021-11-20 07:00:01,068 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4818 transitions. [2021-11-20 07:00:01,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4818 transitions. [2021-11-20 07:00:01,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:01,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4818 transitions. [2021-11-20 07:00:01,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.6) internal successors, (4818), 30 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:01,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:01,078 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:01,078 INFO L186 Difference]: Start difference. First operand has 785 places, 618 transitions, 11060 flow. Second operand 30 states and 4818 transitions. [2021-11-20 07:00:01,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 800 places, 719 transitions, 14525 flow [2021-11-20 07:00:01,941 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 787 places, 719 transitions, 14185 flow, removed 71 selfloop flow, removed 13 redundant places. [2021-11-20 07:00:01,957 INFO L242 Difference]: Finished difference. Result has 800 places, 624 transitions, 11269 flow [2021-11-20 07:00:01,958 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10787, PETRI_DIFFERENCE_MINUEND_PLACES=758, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=133, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11269, PETRI_PLACES=800, PETRI_TRANSITIONS=624} [2021-11-20 07:00:01,958 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 613 predicate places. [2021-11-20 07:00:01,958 INFO L470 AbstractCegarLoop]: Abstraction has has 800 places, 624 transitions, 11269 flow [2021-11-20 07:00:01,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:01,959 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:01,959 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] [2021-11-20 07:00:01,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-20 07:00:01,959 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:01,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:01,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2019422598, now seen corresponding path program 44 times [2021-11-20 07:00:01,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:01,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289890805] [2021-11-20 07:00:01,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:01,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:02,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:02,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:02,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289890805] [2021-11-20 07:00:02,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [289890805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:02,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:02,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:02,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146668633] [2021-11-20 07:00:02,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:02,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:02,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:02,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:02,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:02,137 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:02,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 800 places, 624 transitions, 11269 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:02,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:02,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:02,140 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:04,296 INFO L129 PetriNetUnfolder]: 760/2873 cut-off events. [2021-11-20 07:00:04,296 INFO L130 PetriNetUnfolder]: For 76474/76526 co-relation queries the response was YES. [2021-11-20 07:00:04,405 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22520 conditions, 2873 events. 760/2873 cut-off events. For 76474/76526 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23584 event pairs, 318 based on Foata normal form. 9/2792 useless extension candidates. Maximal degree in co-relation 22196. Up to 1065 conditions per place. [2021-11-20 07:00:04,422 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 357 selfloop transitions, 147 changer transitions 61/723 dead transitions. [2021-11-20 07:00:04,423 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 813 places, 723 transitions, 14792 flow [2021-11-20 07:00:04,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 07:00:04,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-11-20 07:00:04,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2021-11-20 07:00:04,426 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2021-11-20 07:00:04,426 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2021-11-20 07:00:04,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2021-11-20 07:00:04,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:04,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2021-11-20 07:00:04,430 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:04,434 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:04,434 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:04,434 INFO L186 Difference]: Start difference. First operand has 800 places, 624 transitions, 11269 flow. Second operand 29 states and 4664 transitions. [2021-11-20 07:00:04,434 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 813 places, 723 transitions, 14792 flow [2021-11-20 07:00:05,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 799 places, 723 transitions, 14499 flow, removed 70 selfloop flow, removed 14 redundant places. [2021-11-20 07:00:05,410 INFO L242 Difference]: Finished difference. Result has 813 places, 636 transitions, 11761 flow [2021-11-20 07:00:05,410 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11037, PETRI_DIFFERENCE_MINUEND_PLACES=771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=624, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11761, PETRI_PLACES=813, PETRI_TRANSITIONS=636} [2021-11-20 07:00:05,411 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 626 predicate places. [2021-11-20 07:00:05,411 INFO L470 AbstractCegarLoop]: Abstraction has has 813 places, 636 transitions, 11761 flow [2021-11-20 07:00:05,411 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:05,411 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:05,411 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] [2021-11-20 07:00:05,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-20 07:00:05,412 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:05,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:05,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1045811600, now seen corresponding path program 45 times [2021-11-20 07:00:05,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:05,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460787721] [2021-11-20 07:00:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:05,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:05,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:05,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:05,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460787721] [2021-11-20 07:00:05,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460787721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:05,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:05,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:05,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142120084] [2021-11-20 07:00:05,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:05,582 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:05,582 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:05,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:05,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:05,584 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:05,585 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 813 places, 636 transitions, 11761 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:05,585 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:05,585 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:05,585 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:07,898 INFO L129 PetriNetUnfolder]: 761/2877 cut-off events. [2021-11-20 07:00:07,899 INFO L130 PetriNetUnfolder]: For 77735/77768 co-relation queries the response was YES. [2021-11-20 07:00:07,993 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22697 conditions, 2877 events. 761/2877 cut-off events. For 77735/77768 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 23584 event pairs, 308 based on Foata normal form. 5/2792 useless extension candidates. Maximal degree in co-relation 22369. Up to 1066 conditions per place. [2021-11-20 07:00:08,009 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 353 selfloop transitions, 162 changer transitions 61/734 dead transitions. [2021-11-20 07:00:08,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 827 places, 734 transitions, 15309 flow [2021-11-20 07:00:08,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 07:00:08,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-11-20 07:00:08,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4658 transitions. [2021-11-20 07:00:08,013 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7648604269293925 [2021-11-20 07:00:08,013 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4658 transitions. [2021-11-20 07:00:08,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4658 transitions. [2021-11-20 07:00:08,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:08,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4658 transitions. [2021-11-20 07:00:08,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.6206896551724) internal successors, (4658), 29 states have internal predecessors, (4658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:08,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:08,022 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:08,022 INFO L186 Difference]: Start difference. First operand has 813 places, 636 transitions, 11761 flow. Second operand 29 states and 4658 transitions. [2021-11-20 07:00:08,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 827 places, 734 transitions, 15309 flow [2021-11-20 07:00:08,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 814 places, 734 transitions, 15021 flow, removed 55 selfloop flow, removed 13 redundant places. [2021-11-20 07:00:09,011 INFO L242 Difference]: Finished difference. Result has 828 places, 648 transitions, 12281 flow [2021-11-20 07:00:09,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11518, PETRI_DIFFERENCE_MINUEND_PLACES=786, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=480, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12281, PETRI_PLACES=828, PETRI_TRANSITIONS=648} [2021-11-20 07:00:09,012 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 641 predicate places. [2021-11-20 07:00:09,012 INFO L470 AbstractCegarLoop]: Abstraction has has 828 places, 648 transitions, 12281 flow [2021-11-20 07:00:09,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:09,013 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:09,013 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] [2021-11-20 07:00:09,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-20 07:00:09,014 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:09,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:09,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1264568034, now seen corresponding path program 46 times [2021-11-20 07:00:09,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:09,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875860530] [2021-11-20 07:00:09,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:09,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:09,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:09,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:09,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875860530] [2021-11-20 07:00:09,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875860530] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:09,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:09,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:09,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868026838] [2021-11-20 07:00:09,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:09,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:09,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:09,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:09,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:09,189 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:09,190 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 828 places, 648 transitions, 12281 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:09,190 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:09,190 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:09,190 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:11,400 INFO L129 PetriNetUnfolder]: 752/2859 cut-off events. [2021-11-20 07:00:11,400 INFO L130 PetriNetUnfolder]: For 78155/78188 co-relation queries the response was YES. [2021-11-20 07:00:11,503 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22489 conditions, 2859 events. 752/2859 cut-off events. For 78155/78188 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23462 event pairs, 312 based on Foata normal form. 5/2772 useless extension candidates. Maximal degree in co-relation 22155. Up to 1066 conditions per place. [2021-11-20 07:00:11,520 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 350 selfloop transitions, 148 changer transitions 66/722 dead transitions. [2021-11-20 07:00:11,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 843 places, 722 transitions, 15051 flow [2021-11-20 07:00:11,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:00:11,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:00:11,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4809 transitions. [2021-11-20 07:00:11,525 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7633333333333333 [2021-11-20 07:00:11,525 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4809 transitions. [2021-11-20 07:00:11,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4809 transitions. [2021-11-20 07:00:11,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:11,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4809 transitions. [2021-11-20 07:00:11,529 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.3) internal successors, (4809), 30 states have internal predecessors, (4809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:11,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:11,533 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:11,533 INFO L186 Difference]: Start difference. First operand has 828 places, 648 transitions, 12281 flow. Second operand 30 states and 4809 transitions. [2021-11-20 07:00:11,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 843 places, 722 transitions, 15051 flow [2021-11-20 07:00:12,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 830 places, 722 transitions, 14683 flow, removed 67 selfloop flow, removed 13 redundant places. [2021-11-20 07:00:12,508 INFO L242 Difference]: Finished difference. Result has 840 places, 632 transitions, 11809 flow [2021-11-20 07:00:12,509 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11949, PETRI_DIFFERENCE_MINUEND_PLACES=801, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=648, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=148, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11809, PETRI_PLACES=840, PETRI_TRANSITIONS=632} [2021-11-20 07:00:12,509 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 653 predicate places. [2021-11-20 07:00:12,509 INFO L470 AbstractCegarLoop]: Abstraction has has 840 places, 632 transitions, 11809 flow [2021-11-20 07:00:12,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:12,510 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:12,510 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] [2021-11-20 07:00:12,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-20 07:00:12,511 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:12,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:12,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1080206450, now seen corresponding path program 47 times [2021-11-20 07:00:12,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:12,511 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874003999] [2021-11-20 07:00:12,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:12,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:12,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:12,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:12,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:12,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874003999] [2021-11-20 07:00:12,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874003999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:12,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:12,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:12,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084809553] [2021-11-20 07:00:12,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:12,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:12,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:12,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:12,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:12,669 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:12,671 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 840 places, 632 transitions, 11809 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:12,671 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:12,671 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:12,671 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:14,644 INFO L129 PetriNetUnfolder]: 750/2862 cut-off events. [2021-11-20 07:00:14,645 INFO L130 PetriNetUnfolder]: For 78845/78897 co-relation queries the response was YES. [2021-11-20 07:00:14,731 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22496 conditions, 2862 events. 750/2862 cut-off events. For 78845/78897 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 23535 event pairs, 290 based on Foata normal form. 9/2789 useless extension candidates. Maximal degree in co-relation 22160. Up to 1061 conditions per place. [2021-11-20 07:00:14,745 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 341 selfloop transitions, 167 changer transitions 68/734 dead transitions. [2021-11-20 07:00:14,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 840 places, 734 transitions, 15446 flow [2021-11-20 07:00:14,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 07:00:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-20 07:00:14,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4501 transitions. [2021-11-20 07:00:14,748 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654761904761904 [2021-11-20 07:00:14,748 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4501 transitions. [2021-11-20 07:00:14,748 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4501 transitions. [2021-11-20 07:00:14,749 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:14,749 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4501 transitions. [2021-11-20 07:00:14,752 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.75) internal successors, (4501), 28 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:14,755 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:14,756 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:14,756 INFO L186 Difference]: Start difference. First operand has 840 places, 632 transitions, 11809 flow. Second operand 28 states and 4501 transitions. [2021-11-20 07:00:14,756 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 840 places, 734 transitions, 15446 flow [2021-11-20 07:00:15,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 813 places, 734 transitions, 14895 flow, removed 38 selfloop flow, removed 27 redundant places. [2021-11-20 07:00:15,647 INFO L242 Difference]: Finished difference. Result has 824 places, 634 transitions, 11760 flow [2021-11-20 07:00:15,647 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11367, PETRI_DIFFERENCE_MINUEND_PLACES=786, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=11760, PETRI_PLACES=824, PETRI_TRANSITIONS=634} [2021-11-20 07:00:15,647 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 637 predicate places. [2021-11-20 07:00:15,647 INFO L470 AbstractCegarLoop]: Abstraction has has 824 places, 634 transitions, 11760 flow [2021-11-20 07:00:15,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:15,648 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:15,648 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] [2021-11-20 07:00:15,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-20 07:00:15,648 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:15,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:15,648 INFO L85 PathProgramCache]: Analyzing trace with hash 1810257994, now seen corresponding path program 48 times [2021-11-20 07:00:15,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:15,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010085524] [2021-11-20 07:00:15,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:15,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:15,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:15,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010085524] [2021-11-20 07:00:15,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010085524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:15,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:15,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:15,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646776420] [2021-11-20 07:00:15,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:15,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:15,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:15,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:15,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:15,804 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:15,805 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 824 places, 634 transitions, 11760 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:15,805 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:15,805 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:15,805 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:17,811 INFO L129 PetriNetUnfolder]: 747/2863 cut-off events. [2021-11-20 07:00:17,811 INFO L130 PetriNetUnfolder]: For 77371/77404 co-relation queries the response was YES. [2021-11-20 07:00:17,901 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22409 conditions, 2863 events. 747/2863 cut-off events. For 77371/77404 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 23572 event pairs, 298 based on Foata normal form. 5/2784 useless extension candidates. Maximal degree in co-relation 22078. Up to 1066 conditions per place. [2021-11-20 07:00:17,915 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 368 selfloop transitions, 142 changer transitions 60/728 dead transitions. [2021-11-20 07:00:17,916 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 839 places, 728 transitions, 15230 flow [2021-11-20 07:00:17,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 07:00:17,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-11-20 07:00:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4664 transitions. [2021-11-20 07:00:17,918 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7658456486042693 [2021-11-20 07:00:17,918 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4664 transitions. [2021-11-20 07:00:17,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4664 transitions. [2021-11-20 07:00:17,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:17,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4664 transitions. [2021-11-20 07:00:17,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.82758620689654) internal successors, (4664), 29 states have internal predecessors, (4664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:17,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:17,927 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:17,927 INFO L186 Difference]: Start difference. First operand has 824 places, 634 transitions, 11760 flow. Second operand 29 states and 4664 transitions. [2021-11-20 07:00:17,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 839 places, 728 transitions, 15230 flow [2021-11-20 07:00:18,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 820 places, 728 transitions, 14758 flow, removed 68 selfloop flow, removed 19 redundant places. [2021-11-20 07:00:18,785 INFO L242 Difference]: Finished difference. Result has 833 places, 645 transitions, 12040 flow [2021-11-20 07:00:18,786 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11350, PETRI_DIFFERENCE_MINUEND_PLACES=792, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12040, PETRI_PLACES=833, PETRI_TRANSITIONS=645} [2021-11-20 07:00:18,786 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 646 predicate places. [2021-11-20 07:00:18,786 INFO L470 AbstractCegarLoop]: Abstraction has has 833 places, 645 transitions, 12040 flow [2021-11-20 07:00:18,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:18,786 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:18,787 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] [2021-11-20 07:00:18,787 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-20 07:00:18,787 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:18,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:18,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1887466430, now seen corresponding path program 49 times [2021-11-20 07:00:18,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:18,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046637257] [2021-11-20 07:00:18,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:18,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:18,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:18,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:18,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046637257] [2021-11-20 07:00:18,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046637257] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:18,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:18,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:18,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507964627] [2021-11-20 07:00:18,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:18,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:18,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:18,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:18,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:18,945 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:18,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 833 places, 645 transitions, 12040 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:18,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:18,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:18,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:20,954 INFO L129 PetriNetUnfolder]: 733/2847 cut-off events. [2021-11-20 07:00:20,954 INFO L130 PetriNetUnfolder]: For 75822/75855 co-relation queries the response was YES. [2021-11-20 07:00:21,031 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21937 conditions, 2847 events. 733/2847 cut-off events. For 75822/75855 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 23452 event pairs, 310 based on Foata normal form. 5/2767 useless extension candidates. Maximal degree in co-relation 21605. Up to 1063 conditions per place. [2021-11-20 07:00:21,044 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 365 selfloop transitions, 123 changer transitions 66/712 dead transitions. [2021-11-20 07:00:21,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 848 places, 712 transitions, 14555 flow [2021-11-20 07:00:21,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:00:21,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:00:21,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2021-11-20 07:00:21,047 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2021-11-20 07:00:21,047 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2021-11-20 07:00:21,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2021-11-20 07:00:21,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:21,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2021-11-20 07:00:21,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:21,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:21,054 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:21,054 INFO L186 Difference]: Start difference. First operand has 833 places, 645 transitions, 12040 flow. Second operand 30 states and 4815 transitions. [2021-11-20 07:00:21,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 848 places, 712 transitions, 14555 flow [2021-11-20 07:00:21,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 835 places, 712 transitions, 14176 flow, removed 78 selfloop flow, removed 13 redundant places. [2021-11-20 07:00:21,878 INFO L242 Difference]: Finished difference. Result has 844 places, 623 transitions, 11290 flow [2021-11-20 07:00:21,879 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11691, PETRI_DIFFERENCE_MINUEND_PLACES=806, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=645, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=123, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11290, PETRI_PLACES=844, PETRI_TRANSITIONS=623} [2021-11-20 07:00:21,879 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 657 predicate places. [2021-11-20 07:00:21,879 INFO L470 AbstractCegarLoop]: Abstraction has has 844 places, 623 transitions, 11290 flow [2021-11-20 07:00:21,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:21,879 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:21,880 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] [2021-11-20 07:00:21,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-20 07:00:21,880 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:21,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:21,880 INFO L85 PathProgramCache]: Analyzing trace with hash 186909800, now seen corresponding path program 50 times [2021-11-20 07:00:21,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:21,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358882838] [2021-11-20 07:00:21,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:21,880 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:21,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:22,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:22,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:22,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358882838] [2021-11-20 07:00:22,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358882838] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:22,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:22,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:22,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740768687] [2021-11-20 07:00:22,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:22,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:22,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:22,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:22,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:22,021 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:22,022 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 844 places, 623 transitions, 11290 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:22,022 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:22,022 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:22,022 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:24,114 INFO L129 PetriNetUnfolder]: 728/2807 cut-off events. [2021-11-20 07:00:24,114 INFO L130 PetriNetUnfolder]: For 75252/75285 co-relation queries the response was YES. [2021-11-20 07:00:24,223 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21550 conditions, 2807 events. 728/2807 cut-off events. For 75252/75285 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 22989 event pairs, 301 based on Foata normal form. 5/2728 useless extension candidates. Maximal degree in co-relation 21217. Up to 1057 conditions per place. [2021-11-20 07:00:24,239 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 369 selfloop transitions, 129 changer transitions 61/717 dead transitions. [2021-11-20 07:00:24,239 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 846 places, 717 transitions, 14638 flow [2021-11-20 07:00:24,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:00:24,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:00:24,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4822 transitions. [2021-11-20 07:00:24,243 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7653968253968254 [2021-11-20 07:00:24,243 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4822 transitions. [2021-11-20 07:00:24,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4822 transitions. [2021-11-20 07:00:24,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:24,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4822 transitions. [2021-11-20 07:00:24,247 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.73333333333332) internal successors, (4822), 30 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:24,251 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:24,252 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:24,252 INFO L186 Difference]: Start difference. First operand has 844 places, 623 transitions, 11290 flow. Second operand 30 states and 4822 transitions. [2021-11-20 07:00:24,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 846 places, 717 transitions, 14638 flow [2021-11-20 07:00:25,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 816 places, 717 transitions, 14145 flow, removed 49 selfloop flow, removed 30 redundant places. [2021-11-20 07:00:25,220 INFO L242 Difference]: Finished difference. Result has 829 places, 629 transitions, 11346 flow [2021-11-20 07:00:25,221 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10870, PETRI_DIFFERENCE_MINUEND_PLACES=787, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=623, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11346, PETRI_PLACES=829, PETRI_TRANSITIONS=629} [2021-11-20 07:00:25,221 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 642 predicate places. [2021-11-20 07:00:25,221 INFO L470 AbstractCegarLoop]: Abstraction has has 829 places, 629 transitions, 11346 flow [2021-11-20 07:00:25,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:25,222 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:25,222 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] [2021-11-20 07:00:25,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-20 07:00:25,222 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:25,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:25,222 INFO L85 PathProgramCache]: Analyzing trace with hash -103220040, now seen corresponding path program 51 times [2021-11-20 07:00:25,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:25,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18308911] [2021-11-20 07:00:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:25,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:25,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:25,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:25,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:25,365 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18308911] [2021-11-20 07:00:25,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18308911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:25,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:25,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:25,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127206459] [2021-11-20 07:00:25,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:25,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:25,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:25,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:25,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:25,368 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:25,369 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 829 places, 629 transitions, 11346 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:25,369 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:25,369 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:25,369 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:27,581 INFO L129 PetriNetUnfolder]: 737/2860 cut-off events. [2021-11-20 07:00:27,581 INFO L130 PetriNetUnfolder]: For 76279/76331 co-relation queries the response was YES. [2021-11-20 07:00:27,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21969 conditions, 2860 events. 737/2860 cut-off events. For 76279/76331 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 23554 event pairs, 299 based on Foata normal form. 9/2792 useless extension candidates. Maximal degree in co-relation 21641. Up to 1063 conditions per place. [2021-11-20 07:00:27,671 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 368 selfloop transitions, 143 changer transitions 62/731 dead transitions. [2021-11-20 07:00:27,671 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 842 places, 731 transitions, 15011 flow [2021-11-20 07:00:27,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 07:00:27,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-11-20 07:00:27,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2021-11-20 07:00:27,674 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2021-11-20 07:00:27,674 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2021-11-20 07:00:27,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2021-11-20 07:00:27,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:27,674 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2021-11-20 07:00:27,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:27,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:27,681 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:27,681 INFO L186 Difference]: Start difference. First operand has 829 places, 629 transitions, 11346 flow. Second operand 29 states and 4662 transitions. [2021-11-20 07:00:27,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 842 places, 731 transitions, 15011 flow [2021-11-20 07:00:28,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 828 places, 731 transitions, 14676 flow, removed 96 selfloop flow, removed 14 redundant places. [2021-11-20 07:00:28,545 INFO L242 Difference]: Finished difference. Result has 842 places, 641 transitions, 11818 flow [2021-11-20 07:00:28,546 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11092, PETRI_DIFFERENCE_MINUEND_PLACES=800, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=629, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=492, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=11818, PETRI_PLACES=842, PETRI_TRANSITIONS=641} [2021-11-20 07:00:28,546 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 655 predicate places. [2021-11-20 07:00:28,546 INFO L470 AbstractCegarLoop]: Abstraction has has 842 places, 641 transitions, 11818 flow [2021-11-20 07:00:28,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:28,546 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:28,546 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] [2021-11-20 07:00:28,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-20 07:00:28,547 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:28,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:28,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1608858408, now seen corresponding path program 52 times [2021-11-20 07:00:28,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:28,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844554614] [2021-11-20 07:00:28,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:28,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:28,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:28,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:28,709 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:28,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844554614] [2021-11-20 07:00:28,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844554614] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:28,709 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:28,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:28,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477560644] [2021-11-20 07:00:28,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:28,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:28,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:28,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:28,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:28,712 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:28,713 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 842 places, 641 transitions, 11818 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:28,713 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:28,713 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:28,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:30,832 INFO L129 PetriNetUnfolder]: 735/2853 cut-off events. [2021-11-20 07:00:30,832 INFO L130 PetriNetUnfolder]: For 77204/77256 co-relation queries the response was YES. [2021-11-20 07:00:30,928 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22047 conditions, 2853 events. 735/2853 cut-off events. For 77204/77256 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 23534 event pairs, 302 based on Foata normal form. 9/2781 useless extension candidates. Maximal degree in co-relation 21715. Up to 1065 conditions per place. [2021-11-20 07:00:30,942 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 374 selfloop transitions, 143 changer transitions 60/735 dead transitions. [2021-11-20 07:00:30,942 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 856 places, 735 transitions, 15334 flow [2021-11-20 07:00:30,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 07:00:30,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-11-20 07:00:30,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2021-11-20 07:00:30,945 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2021-11-20 07:00:30,945 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2021-11-20 07:00:30,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2021-11-20 07:00:30,946 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:30,946 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2021-11-20 07:00:30,949 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:30,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:30,953 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:30,953 INFO L186 Difference]: Start difference. First operand has 842 places, 641 transitions, 11818 flow. Second operand 29 states and 4662 transitions. [2021-11-20 07:00:30,953 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 856 places, 735 transitions, 15334 flow [2021-11-20 07:00:31,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 843 places, 735 transitions, 15017 flow, removed 67 selfloop flow, removed 13 redundant places. [2021-11-20 07:00:31,830 INFO L242 Difference]: Finished difference. Result has 856 places, 652 transitions, 12260 flow [2021-11-20 07:00:31,831 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11570, PETRI_DIFFERENCE_MINUEND_PLACES=815, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=641, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=12260, PETRI_PLACES=856, PETRI_TRANSITIONS=652} [2021-11-20 07:00:31,831 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 669 predicate places. [2021-11-20 07:00:31,831 INFO L470 AbstractCegarLoop]: Abstraction has has 856 places, 652 transitions, 12260 flow [2021-11-20 07:00:31,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:31,831 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:31,831 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] [2021-11-20 07:00:31,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-20 07:00:31,832 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:31,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash -279356562, now seen corresponding path program 53 times [2021-11-20 07:00:31,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:31,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026279105] [2021-11-20 07:00:31,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:31,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:31,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:31,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:31,987 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:31,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026279105] [2021-11-20 07:00:31,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026279105] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:31,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:31,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:31,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624382693] [2021-11-20 07:00:31,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:31,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:31,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:31,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:31,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:31,990 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:31,990 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 856 places, 652 transitions, 12260 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:31,991 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:31,991 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:31,991 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:34,120 INFO L129 PetriNetUnfolder]: 721/2810 cut-off events. [2021-11-20 07:00:34,120 INFO L130 PetriNetUnfolder]: For 75472/75505 co-relation queries the response was YES. [2021-11-20 07:00:34,210 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21568 conditions, 2810 events. 721/2810 cut-off events. For 75472/75505 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 23062 event pairs, 293 based on Foata normal form. 5/2736 useless extension candidates. Maximal degree in co-relation 21231. Up to 1060 conditions per place. [2021-11-20 07:00:34,225 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 373 selfloop transitions, 124 changer transitions 65/720 dead transitions. [2021-11-20 07:00:34,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 871 places, 720 transitions, 14848 flow [2021-11-20 07:00:34,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:00:34,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:00:34,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2021-11-20 07:00:34,228 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2021-11-20 07:00:34,228 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2021-11-20 07:00:34,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2021-11-20 07:00:34,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:34,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2021-11-20 07:00:34,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:34,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:34,240 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:34,240 INFO L186 Difference]: Start difference. First operand has 856 places, 652 transitions, 12260 flow. Second operand 30 states and 4813 transitions. [2021-11-20 07:00:34,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 871 places, 720 transitions, 14848 flow [2021-11-20 07:00:35,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 858 places, 720 transitions, 14493 flow, removed 63 selfloop flow, removed 13 redundant places. [2021-11-20 07:00:35,187 INFO L242 Difference]: Finished difference. Result has 869 places, 632 transitions, 11590 flow [2021-11-20 07:00:35,188 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11933, PETRI_DIFFERENCE_MINUEND_PLACES=829, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=652, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=528, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=11590, PETRI_PLACES=869, PETRI_TRANSITIONS=632} [2021-11-20 07:00:35,188 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 682 predicate places. [2021-11-20 07:00:35,188 INFO L470 AbstractCegarLoop]: Abstraction has has 869 places, 632 transitions, 11590 flow [2021-11-20 07:00:35,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:35,189 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:35,189 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] [2021-11-20 07:00:35,189 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-20 07:00:35,189 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:35,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:35,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1281718676, now seen corresponding path program 54 times [2021-11-20 07:00:35,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:35,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901269777] [2021-11-20 07:00:35,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:35,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:35,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:35,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:35,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901269777] [2021-11-20 07:00:35,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901269777] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:35,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:35,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:35,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145543605] [2021-11-20 07:00:35,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:35,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:35,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:35,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:35,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:35,350 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:35,352 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 869 places, 632 transitions, 11590 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:35,352 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:35,352 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:35,352 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:37,558 INFO L129 PetriNetUnfolder]: 719/2792 cut-off events. [2021-11-20 07:00:37,558 INFO L130 PetriNetUnfolder]: For 75162/75214 co-relation queries the response was YES. [2021-11-20 07:00:37,648 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21431 conditions, 2792 events. 719/2792 cut-off events. For 75162/75214 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 22903 event pairs, 285 based on Foata normal form. 9/2725 useless extension candidates. Maximal degree in co-relation 21091. Up to 1060 conditions per place. [2021-11-20 07:00:37,662 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 364 selfloop transitions, 136 changer transitions 65/723 dead transitions. [2021-11-20 07:00:37,662 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 868 places, 723 transitions, 14969 flow [2021-11-20 07:00:37,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 07:00:37,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-20 07:00:37,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4342 transitions. [2021-11-20 07:00:37,664 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7657848324514991 [2021-11-20 07:00:37,664 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4342 transitions. [2021-11-20 07:00:37,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4342 transitions. [2021-11-20 07:00:37,665 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:37,665 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4342 transitions. [2021-11-20 07:00:37,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.8148148148148) internal successors, (4342), 27 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:37,670 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:37,671 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:37,671 INFO L186 Difference]: Start difference. First operand has 869 places, 632 transitions, 11590 flow. Second operand 27 states and 4342 transitions. [2021-11-20 07:00:37,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 868 places, 723 transitions, 14969 flow [2021-11-20 07:00:38,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 838 places, 723 transitions, 14429 flow, removed 62 selfloop flow, removed 30 redundant places. [2021-11-20 07:00:38,529 INFO L242 Difference]: Finished difference. Result has 848 places, 636 transitions, 11597 flow [2021-11-20 07:00:38,529 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11173, PETRI_DIFFERENCE_MINUEND_PLACES=812, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=632, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=500, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=11597, PETRI_PLACES=848, PETRI_TRANSITIONS=636} [2021-11-20 07:00:38,530 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 661 predicate places. [2021-11-20 07:00:38,530 INFO L470 AbstractCegarLoop]: Abstraction has has 848 places, 636 transitions, 11597 flow [2021-11-20 07:00:38,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:38,530 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:38,531 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] [2021-11-20 07:00:38,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-20 07:00:38,531 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:38,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:38,531 INFO L85 PathProgramCache]: Analyzing trace with hash 672964448, now seen corresponding path program 55 times [2021-11-20 07:00:38,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:38,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763353894] [2021-11-20 07:00:38,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:38,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:38,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:38,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:38,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:38,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763353894] [2021-11-20 07:00:38,673 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763353894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:38,673 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:38,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:38,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103948269] [2021-11-20 07:00:38,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:38,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:38,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:38,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:38,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:38,675 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:38,676 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 848 places, 636 transitions, 11597 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:38,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:38,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:38,676 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:40,621 INFO L129 PetriNetUnfolder]: 689/2712 cut-off events. [2021-11-20 07:00:40,621 INFO L130 PetriNetUnfolder]: For 70697/70749 co-relation queries the response was YES. [2021-11-20 07:00:40,693 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20480 conditions, 2712 events. 689/2712 cut-off events. For 70697/70749 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 22054 event pairs, 280 based on Foata normal form. 9/2648 useless extension candidates. Maximal degree in co-relation 20148. Up to 1041 conditions per place. [2021-11-20 07:00:40,706 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 351 selfloop transitions, 109 changer transitions 72/690 dead transitions. [2021-11-20 07:00:40,706 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 865 places, 690 transitions, 13698 flow [2021-11-20 07:00:40,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:00:40,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:00:40,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4803 transitions. [2021-11-20 07:00:40,716 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623809523809524 [2021-11-20 07:00:40,716 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4803 transitions. [2021-11-20 07:00:40,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4803 transitions. [2021-11-20 07:00:40,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:40,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4803 transitions. [2021-11-20 07:00:40,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.1) internal successors, (4803), 30 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:40,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:40,724 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:40,724 INFO L186 Difference]: Start difference. First operand has 848 places, 636 transitions, 11597 flow. Second operand 30 states and 4803 transitions. [2021-11-20 07:00:40,724 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 865 places, 690 transitions, 13698 flow [2021-11-20 07:00:41,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 847 places, 690 transitions, 13289 flow, removed 55 selfloop flow, removed 18 redundant places. [2021-11-20 07:00:41,553 INFO L242 Difference]: Finished difference. Result has 854 places, 596 transitions, 10320 flow [2021-11-20 07:00:41,554 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11214, PETRI_DIFFERENCE_MINUEND_PLACES=818, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=109, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=527, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=10320, PETRI_PLACES=854, PETRI_TRANSITIONS=596} [2021-11-20 07:00:41,554 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 667 predicate places. [2021-11-20 07:00:41,554 INFO L470 AbstractCegarLoop]: Abstraction has has 854 places, 596 transitions, 10320 flow [2021-11-20 07:00:41,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:41,554 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:41,555 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] [2021-11-20 07:00:41,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-20 07:00:41,555 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:41,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:41,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1600871906, now seen corresponding path program 56 times [2021-11-20 07:00:41,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:41,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911977240] [2021-11-20 07:00:41,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:41,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:41,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:41,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:41,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911977240] [2021-11-20 07:00:41,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911977240] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:41,715 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:41,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:41,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149924210] [2021-11-20 07:00:41,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:41,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:41,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:41,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:41,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:41,718 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:41,720 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 854 places, 596 transitions, 10320 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:41,720 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:41,720 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:41,720 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:43,545 INFO L129 PetriNetUnfolder]: 670/2664 cut-off events. [2021-11-20 07:00:43,545 INFO L130 PetriNetUnfolder]: For 68755/68788 co-relation queries the response was YES. [2021-11-20 07:00:43,636 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19905 conditions, 2664 events. 670/2664 cut-off events. For 68755/68788 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 21542 event pairs, 290 based on Foata normal form. 5/2597 useless extension candidates. Maximal degree in co-relation 19575. Up to 1030 conditions per place. [2021-11-20 07:00:43,650 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 340 selfloop transitions, 95 changer transitions 63/656 dead transitions. [2021-11-20 07:00:43,650 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 842 places, 656 transitions, 12596 flow [2021-11-20 07:00:43,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:00:43,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:00:43,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4807 transitions. [2021-11-20 07:00:43,654 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763015873015873 [2021-11-20 07:00:43,654 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4807 transitions. [2021-11-20 07:00:43,654 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4807 transitions. [2021-11-20 07:00:43,655 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:43,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4807 transitions. [2021-11-20 07:00:43,659 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.23333333333332) internal successors, (4807), 30 states have internal predecessors, (4807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:43,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:43,663 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:43,663 INFO L186 Difference]: Start difference. First operand has 854 places, 596 transitions, 10320 flow. Second operand 30 states and 4807 transitions. [2021-11-20 07:00:43,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 842 places, 656 transitions, 12596 flow [2021-11-20 07:00:44,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 800 places, 656 transitions, 11785 flow, removed 46 selfloop flow, removed 42 redundant places. [2021-11-20 07:00:44,399 INFO L242 Difference]: Finished difference. Result has 810 places, 571 transitions, 9203 flow [2021-11-20 07:00:44,400 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9618, PETRI_DIFFERENCE_MINUEND_PLACES=771, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=596, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=501, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=9203, PETRI_PLACES=810, PETRI_TRANSITIONS=571} [2021-11-20 07:00:44,400 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 623 predicate places. [2021-11-20 07:00:44,400 INFO L470 AbstractCegarLoop]: Abstraction has has 810 places, 571 transitions, 9203 flow [2021-11-20 07:00:44,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:44,400 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:44,401 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] [2021-11-20 07:00:44,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-20 07:00:44,401 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:44,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:44,401 INFO L85 PathProgramCache]: Analyzing trace with hash 498509034, now seen corresponding path program 57 times [2021-11-20 07:00:44,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:44,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385956893] [2021-11-20 07:00:44,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:44,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:44,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:44,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:44,550 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:44,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385956893] [2021-11-20 07:00:44,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385956893] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:44,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:44,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:44,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643472710] [2021-11-20 07:00:44,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:44,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:44,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:44,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:44,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:44,554 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:44,555 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 810 places, 571 transitions, 9203 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:44,555 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:44,555 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:44,556 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:46,375 INFO L129 PetriNetUnfolder]: 642/2534 cut-off events. [2021-11-20 07:00:46,375 INFO L130 PetriNetUnfolder]: For 59838/59890 co-relation queries the response was YES. [2021-11-20 07:00:46,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18475 conditions, 2534 events. 642/2534 cut-off events. For 59838/59890 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 20098 event pairs, 272 based on Foata normal form. 9/2474 useless extension candidates. Maximal degree in co-relation 18161. Up to 1014 conditions per place. [2021-11-20 07:00:46,445 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 322 selfloop transitions, 69 changer transitions 65/614 dead transitions. [2021-11-20 07:00:46,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 804 places, 614 transitions, 10886 flow [2021-11-20 07:00:46,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 07:00:46,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-20 07:00:46,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4481 transitions. [2021-11-20 07:00:46,447 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7620748299319728 [2021-11-20 07:00:46,447 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4481 transitions. [2021-11-20 07:00:46,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4481 transitions. [2021-11-20 07:00:46,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:46,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4481 transitions. [2021-11-20 07:00:46,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.03571428571428) internal successors, (4481), 28 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:46,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:46,454 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:46,454 INFO L186 Difference]: Start difference. First operand has 810 places, 571 transitions, 9203 flow. Second operand 28 states and 4481 transitions. [2021-11-20 07:00:46,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 804 places, 614 transitions, 10886 flow [2021-11-20 07:00:47,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 771 places, 614 transitions, 10420 flow, removed 29 selfloop flow, removed 33 redundant places. [2021-11-20 07:00:47,054 INFO L242 Difference]: Finished difference. Result has 778 places, 527 transitions, 7884 flow [2021-11-20 07:00:47,054 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8777, PETRI_DIFFERENCE_MINUEND_PLACES=744, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=571, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=7884, PETRI_PLACES=778, PETRI_TRANSITIONS=527} [2021-11-20 07:00:47,055 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 591 predicate places. [2021-11-20 07:00:47,055 INFO L470 AbstractCegarLoop]: Abstraction has has 778 places, 527 transitions, 7884 flow [2021-11-20 07:00:47,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:47,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:47,056 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] [2021-11-20 07:00:47,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-20 07:00:47,056 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:47,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:47,056 INFO L85 PathProgramCache]: Analyzing trace with hash 2035546974, now seen corresponding path program 58 times [2021-11-20 07:00:47,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:47,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098827343] [2021-11-20 07:00:47,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:47,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:47,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:47,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098827343] [2021-11-20 07:00:47,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098827343] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:47,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:47,177 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:47,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783416634] [2021-11-20 07:00:47,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:47,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:47,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:47,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:47,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:47,179 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:47,180 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 778 places, 527 transitions, 7884 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:47,180 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:47,180 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:47,180 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:49,017 INFO L129 PetriNetUnfolder]: 622/2483 cut-off events. [2021-11-20 07:00:49,017 INFO L130 PetriNetUnfolder]: For 56391/56443 co-relation queries the response was YES. [2021-11-20 07:00:49,101 INFO L84 FinitePrefix]: Finished finitePrefix Result has 17738 conditions, 2483 events. 622/2483 cut-off events. For 56391/56443 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 19609 event pairs, 283 based on Foata normal form. 9/2423 useless extension candidates. Maximal degree in co-relation 17437. Up to 1010 conditions per place. [2021-11-20 07:00:49,114 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 290 selfloop transitions, 73 changer transitions 64/585 dead transitions. [2021-11-20 07:00:49,114 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 754 places, 585 transitions, 9846 flow [2021-11-20 07:00:49,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:00:49,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:00:49,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4803 transitions. [2021-11-20 07:00:49,118 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7623809523809524 [2021-11-20 07:00:49,118 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4803 transitions. [2021-11-20 07:00:49,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4803 transitions. [2021-11-20 07:00:49,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:49,119 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4803 transitions. [2021-11-20 07:00:49,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.1) internal successors, (4803), 30 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:49,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:49,127 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:49,127 INFO L186 Difference]: Start difference. First operand has 778 places, 527 transitions, 7884 flow. Second operand 30 states and 4803 transitions. [2021-11-20 07:00:49,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 754 places, 585 transitions, 9846 flow [2021-11-20 07:00:49,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 720 places, 585 transitions, 9276 flow, removed 33 selfloop flow, removed 34 redundant places. [2021-11-20 07:00:49,766 INFO L242 Difference]: Finished difference. Result has 731 places, 499 transitions, 6902 flow [2021-11-20 07:00:49,766 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7401, PETRI_DIFFERENCE_MINUEND_PLACES=691, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=527, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=454, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=6902, PETRI_PLACES=731, PETRI_TRANSITIONS=499} [2021-11-20 07:00:49,766 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 544 predicate places. [2021-11-20 07:00:49,766 INFO L470 AbstractCegarLoop]: Abstraction has has 731 places, 499 transitions, 6902 flow [2021-11-20 07:00:49,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:49,767 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:49,767 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] [2021-11-20 07:00:49,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-20 07:00:49,767 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:49,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:49,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1985879204, now seen corresponding path program 59 times [2021-11-20 07:00:49,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:49,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176590009] [2021-11-20 07:00:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:49,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:49,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:49,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:49,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:49,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176590009] [2021-11-20 07:00:49,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176590009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:49,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:49,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:49,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752504995] [2021-11-20 07:00:49,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:49,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:49,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:49,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:49,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:49,895 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:49,896 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 731 places, 499 transitions, 6902 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:49,896 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:49,896 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:49,896 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:51,406 INFO L129 PetriNetUnfolder]: 604/2417 cut-off events. [2021-11-20 07:00:51,407 INFO L130 PetriNetUnfolder]: For 51540/51592 co-relation queries the response was YES. [2021-11-20 07:00:51,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16883 conditions, 2417 events. 604/2417 cut-off events. For 51540/51592 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 18925 event pairs, 273 based on Foata normal form. 9/2357 useless extension candidates. Maximal degree in co-relation 16591. Up to 999 conditions per place. [2021-11-20 07:00:51,485 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 272 selfloop transitions, 66 changer transitions 65/561 dead transitions. [2021-11-20 07:00:51,485 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 723 places, 561 transitions, 8859 flow [2021-11-20 07:00:51,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 07:00:51,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-20 07:00:51,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4486 transitions. [2021-11-20 07:00:51,487 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7629251700680272 [2021-11-20 07:00:51,487 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4486 transitions. [2021-11-20 07:00:51,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4486 transitions. [2021-11-20 07:00:51,488 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:51,488 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4486 transitions. [2021-11-20 07:00:51,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.21428571428572) internal successors, (4486), 28 states have internal predecessors, (4486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:51,493 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:51,494 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:51,494 INFO L186 Difference]: Start difference. First operand has 731 places, 499 transitions, 6902 flow. Second operand 28 states and 4486 transitions. [2021-11-20 07:00:51,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 723 places, 561 transitions, 8859 flow [2021-11-20 07:00:52,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 690 places, 561 transitions, 8441 flow, removed 28 selfloop flow, removed 33 redundant places. [2021-11-20 07:00:52,048 INFO L242 Difference]: Finished difference. Result has 699 places, 474 transitions, 6128 flow [2021-11-20 07:00:52,048 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6553, PETRI_DIFFERENCE_MINUEND_PLACES=663, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=433, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=6128, PETRI_PLACES=699, PETRI_TRANSITIONS=474} [2021-11-20 07:00:52,048 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 512 predicate places. [2021-11-20 07:00:52,048 INFO L470 AbstractCegarLoop]: Abstraction has has 699 places, 474 transitions, 6128 flow [2021-11-20 07:00:52,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:52,049 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:52,049 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] [2021-11-20 07:00:52,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-20 07:00:52,049 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:52,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:52,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1980764918, now seen corresponding path program 60 times [2021-11-20 07:00:52,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:52,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131755899] [2021-11-20 07:00:52,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:52,050 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:52,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:52,234 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:52,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131755899] [2021-11-20 07:00:52,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131755899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:52,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:52,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:52,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461222811] [2021-11-20 07:00:52,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:52,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:52,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:52,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:52,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:52,238 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:52,239 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 699 places, 474 transitions, 6128 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:52,239 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:52,239 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:52,240 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:53,774 INFO L129 PetriNetUnfolder]: 580/2322 cut-off events. [2021-11-20 07:00:53,774 INFO L130 PetriNetUnfolder]: For 48139/48191 co-relation queries the response was YES. [2021-11-20 07:00:53,830 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15987 conditions, 2322 events. 580/2322 cut-off events. For 48139/48191 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 17834 event pairs, 278 based on Foata normal form. 9/2262 useless extension candidates. Maximal degree in co-relation 15705. Up to 988 conditions per place. [2021-11-20 07:00:53,840 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 251 selfloop transitions, 51 changer transitions 65/525 dead transitions. [2021-11-20 07:00:53,840 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 525 transitions, 7743 flow [2021-11-20 07:00:53,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:00:53,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:00:53,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4798 transitions. [2021-11-20 07:00:53,842 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7615873015873016 [2021-11-20 07:00:53,842 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4798 transitions. [2021-11-20 07:00:53,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4798 transitions. [2021-11-20 07:00:53,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:53,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4798 transitions. [2021-11-20 07:00:53,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.93333333333334) internal successors, (4798), 30 states have internal predecessors, (4798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:53,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:53,849 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:53,850 INFO L186 Difference]: Start difference. First operand has 699 places, 474 transitions, 6128 flow. Second operand 30 states and 4798 transitions. [2021-11-20 07:00:53,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 525 transitions, 7743 flow [2021-11-20 07:00:54,286 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 662 places, 525 transitions, 7349 flow, removed 30 selfloop flow, removed 33 redundant places. [2021-11-20 07:00:54,296 INFO L242 Difference]: Finished difference. Result has 671 places, 438 transitions, 5168 flow [2021-11-20 07:00:54,297 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5794, PETRI_DIFFERENCE_MINUEND_PLACES=633, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=474, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=423, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5168, PETRI_PLACES=671, PETRI_TRANSITIONS=438} [2021-11-20 07:00:54,298 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 484 predicate places. [2021-11-20 07:00:54,298 INFO L470 AbstractCegarLoop]: Abstraction has has 671 places, 438 transitions, 5168 flow [2021-11-20 07:00:54,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:54,299 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:54,299 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] [2021-11-20 07:00:54,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-20 07:00:54,299 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:54,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:54,300 INFO L85 PathProgramCache]: Analyzing trace with hash -381265290, now seen corresponding path program 61 times [2021-11-20 07:00:54,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:54,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116145347] [2021-11-20 07:00:54,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:54,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:54,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:54,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:54,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:54,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116145347] [2021-11-20 07:00:54,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116145347] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:54,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:54,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:54,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525632079] [2021-11-20 07:00:54,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:54,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:54,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:54,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:54,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:54,440 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:54,441 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 671 places, 438 transitions, 5168 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:54,441 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:54,441 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:54,442 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:55,777 INFO L129 PetriNetUnfolder]: 550/2191 cut-off events. [2021-11-20 07:00:55,777 INFO L130 PetriNetUnfolder]: For 44101/44153 co-relation queries the response was YES. [2021-11-20 07:00:55,834 INFO L84 FinitePrefix]: Finished finitePrefix Result has 14881 conditions, 2191 events. 550/2191 cut-off events. For 44101/44153 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 16377 event pairs, 271 based on Foata normal form. 9/2133 useless extension candidates. Maximal degree in co-relation 14608. Up to 967 conditions per place. [2021-11-20 07:00:55,844 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 226 selfloop transitions, 22 changer transitions 68/474 dead transitions. [2021-11-20 07:00:55,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 659 places, 474 transitions, 6359 flow [2021-11-20 07:00:55,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:00:55,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:00:55,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4775 transitions. [2021-11-20 07:00:55,847 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7579365079365079 [2021-11-20 07:00:55,847 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4775 transitions. [2021-11-20 07:00:55,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4775 transitions. [2021-11-20 07:00:55,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:55,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4775 transitions. [2021-11-20 07:00:55,851 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 159.16666666666666) internal successors, (4775), 30 states have internal predecessors, (4775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:55,855 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:55,856 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:55,856 INFO L186 Difference]: Start difference. First operand has 671 places, 438 transitions, 5168 flow. Second operand 30 states and 4775 transitions. [2021-11-20 07:00:55,856 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 659 places, 474 transitions, 6359 flow [2021-11-20 07:00:56,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 624 places, 474 transitions, 6073 flow, removed 25 selfloop flow, removed 35 redundant places. [2021-11-20 07:00:56,254 INFO L242 Difference]: Finished difference. Result has 629 places, 385 transitions, 3976 flow [2021-11-20 07:00:56,254 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4900, PETRI_DIFFERENCE_MINUEND_PLACES=595, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=438, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=416, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3976, PETRI_PLACES=629, PETRI_TRANSITIONS=385} [2021-11-20 07:00:56,254 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 442 predicate places. [2021-11-20 07:00:56,255 INFO L470 AbstractCegarLoop]: Abstraction has has 629 places, 385 transitions, 3976 flow [2021-11-20 07:00:56,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:56,255 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:56,255 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] [2021-11-20 07:00:56,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-20 07:00:56,255 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:56,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:56,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1866222696, now seen corresponding path program 62 times [2021-11-20 07:00:56,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:56,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140425477] [2021-11-20 07:00:56,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:56,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:56,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:56,401 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:56,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140425477] [2021-11-20 07:00:56,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140425477] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:56,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:56,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:56,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805669567] [2021-11-20 07:00:56,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:56,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:56,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:56,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:56,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:56,404 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:56,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 629 places, 385 transitions, 3976 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:56,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:56,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:56,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:00:57,992 INFO L129 PetriNetUnfolder]: 590/2297 cut-off events. [2021-11-20 07:00:57,992 INFO L130 PetriNetUnfolder]: For 45770/45789 co-relation queries the response was YES. [2021-11-20 07:00:58,056 INFO L84 FinitePrefix]: Finished finitePrefix Result has 15614 conditions, 2297 events. 590/2297 cut-off events. For 45770/45789 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 17435 event pairs, 273 based on Foata normal form. 3/2234 useless extension candidates. Maximal degree in co-relation 15355. Up to 967 conditions per place. [2021-11-20 07:00:58,067 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 252 selfloop transitions, 48 changer transitions 74/532 dead transitions. [2021-11-20 07:00:58,067 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 606 places, 532 transitions, 7584 flow [2021-11-20 07:00:58,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-20 07:00:58,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-11-20 07:00:58,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7335 transitions. [2021-11-20 07:00:58,071 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7593167701863354 [2021-11-20 07:00:58,071 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7335 transitions. [2021-11-20 07:00:58,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7335 transitions. [2021-11-20 07:00:58,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:00:58,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7335 transitions. [2021-11-20 07:00:58,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.45652173913044) internal successors, (7335), 46 states have internal predecessors, (7335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:58,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:58,084 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:58,085 INFO L186 Difference]: Start difference. First operand has 629 places, 385 transitions, 3976 flow. Second operand 46 states and 7335 transitions. [2021-11-20 07:00:58,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 606 places, 532 transitions, 7584 flow [2021-11-20 07:00:58,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 572 places, 532 transitions, 7100 flow, removed 85 selfloop flow, removed 34 redundant places. [2021-11-20 07:00:58,468 INFO L242 Difference]: Finished difference. Result has 603 places, 406 transitions, 4355 flow [2021-11-20 07:00:58,468 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=3776, PETRI_DIFFERENCE_MINUEND_PLACES=527, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=350, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=4355, PETRI_PLACES=603, PETRI_TRANSITIONS=406} [2021-11-20 07:00:58,468 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 416 predicate places. [2021-11-20 07:00:58,468 INFO L470 AbstractCegarLoop]: Abstraction has has 603 places, 406 transitions, 4355 flow [2021-11-20 07:00:58,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:58,469 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:00:58,469 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] [2021-11-20 07:00:58,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-11-20 07:00:58,470 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:00:58,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:00:58,470 INFO L85 PathProgramCache]: Analyzing trace with hash -912240368, now seen corresponding path program 63 times [2021-11-20 07:00:58,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:00:58,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901634100] [2021-11-20 07:00:58,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:00:58,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:00:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:00:58,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:00:58,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:00:58,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901634100] [2021-11-20 07:00:58,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901634100] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:00:58,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:00:58,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:00:58,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207029147] [2021-11-20 07:00:58,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:00:58,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:00:58,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:00:58,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:00:58,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:00:58,650 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:00:58,651 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 603 places, 406 transitions, 4355 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:00:58,651 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:00:58,651 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:00:58,651 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:00,340 INFO L129 PetriNetUnfolder]: 632/2404 cut-off events. [2021-11-20 07:01:00,340 INFO L130 PetriNetUnfolder]: For 50955/50992 co-relation queries the response was YES. [2021-11-20 07:01:00,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 16942 conditions, 2404 events. 632/2404 cut-off events. For 50955/50992 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 18417 event pairs, 303 based on Foata normal form. 5/2336 useless extension candidates. Maximal degree in co-relation 16677. Up to 967 conditions per place. [2021-11-20 07:01:00,409 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 258 selfloop transitions, 60 changer transitions 74/550 dead transitions. [2021-11-20 07:01:00,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 612 places, 550 transitions, 8184 flow [2021-11-20 07:01:00,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-20 07:01:00,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-11-20 07:01:00,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6865 transitions. [2021-11-20 07:01:00,413 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7602436323366556 [2021-11-20 07:01:00,413 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6865 transitions. [2021-11-20 07:01:00,413 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6865 transitions. [2021-11-20 07:01:00,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:00,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6865 transitions. [2021-11-20 07:01:00,419 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.65116279069767) internal successors, (6865), 43 states have internal predecessors, (6865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:00,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:00,425 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:00,425 INFO L186 Difference]: Start difference. First operand has 603 places, 406 transitions, 4355 flow. Second operand 43 states and 6865 transitions. [2021-11-20 07:01:00,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 612 places, 550 transitions, 8184 flow [2021-11-20 07:01:00,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 587 places, 550 transitions, 7733 flow, removed 216 selfloop flow, removed 25 redundant places. [2021-11-20 07:01:00,805 INFO L242 Difference]: Finished difference. Result has 623 places, 428 transitions, 4977 flow [2021-11-20 07:01:00,805 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4263, PETRI_DIFFERENCE_MINUEND_PLACES=545, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=406, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=4977, PETRI_PLACES=623, PETRI_TRANSITIONS=428} [2021-11-20 07:01:00,805 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 436 predicate places. [2021-11-20 07:01:00,805 INFO L470 AbstractCegarLoop]: Abstraction has has 623 places, 428 transitions, 4977 flow [2021-11-20 07:01:00,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:00,806 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:00,806 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] [2021-11-20 07:01:00,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-20 07:01:00,806 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:00,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:00,806 INFO L85 PathProgramCache]: Analyzing trace with hash 979581782, now seen corresponding path program 64 times [2021-11-20 07:01:00,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:00,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723632556] [2021-11-20 07:01:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:00,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:00,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:00,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:00,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723632556] [2021-11-20 07:01:00,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723632556] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:00,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:00,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:00,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886532018] [2021-11-20 07:01:00,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:00,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:00,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:00,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:00,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:00,936 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:00,937 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 623 places, 428 transitions, 4977 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:00,937 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:00,937 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:00,937 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:02,667 INFO L129 PetriNetUnfolder]: 668/2503 cut-off events. [2021-11-20 07:01:02,667 INFO L130 PetriNetUnfolder]: For 60292/60329 co-relation queries the response was YES. [2021-11-20 07:01:02,736 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18640 conditions, 2503 events. 668/2503 cut-off events. For 60292/60329 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 19472 event pairs, 287 based on Foata normal form. 5/2435 useless extension candidates. Maximal degree in co-relation 18363. Up to 967 conditions per place. [2021-11-20 07:01:02,748 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 275 selfloop transitions, 66 changer transitions 74/573 dead transitions. [2021-11-20 07:01:02,748 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 573 transitions, 9306 flow [2021-11-20 07:01:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-20 07:01:02,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-11-20 07:01:02,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7181 transitions. [2021-11-20 07:01:02,752 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7598941798941798 [2021-11-20 07:01:02,752 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7181 transitions. [2021-11-20 07:01:02,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7181 transitions. [2021-11-20 07:01:02,753 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:02,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7181 transitions. [2021-11-20 07:01:02,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.57777777777778) internal successors, (7181), 45 states have internal predecessors, (7181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:02,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:02,764 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:02,764 INFO L186 Difference]: Start difference. First operand has 623 places, 428 transitions, 4977 flow. Second operand 45 states and 7181 transitions. [2021-11-20 07:01:02,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 573 transitions, 9306 flow [2021-11-20 07:01:03,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 611 places, 573 transitions, 8659 flow, removed 292 selfloop flow, removed 26 redundant places. [2021-11-20 07:01:03,256 INFO L242 Difference]: Finished difference. Result has 646 places, 448 transitions, 5555 flow [2021-11-20 07:01:03,256 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=4826, PETRI_DIFFERENCE_MINUEND_PLACES=567, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=428, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=371, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=5555, PETRI_PLACES=646, PETRI_TRANSITIONS=448} [2021-11-20 07:01:03,257 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 459 predicate places. [2021-11-20 07:01:03,257 INFO L470 AbstractCegarLoop]: Abstraction has has 646 places, 448 transitions, 5555 flow [2021-11-20 07:01:03,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:03,257 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:03,257 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] [2021-11-20 07:01:03,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-11-20 07:01:03,258 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:03,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:03,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1362929174, now seen corresponding path program 65 times [2021-11-20 07:01:03,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:03,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697431006] [2021-11-20 07:01:03,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:03,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:03,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:03,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697431006] [2021-11-20 07:01:03,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697431006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:03,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:03,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:03,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768241899] [2021-11-20 07:01:03,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:03,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:03,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:03,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:03,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:03,415 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:03,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 646 places, 448 transitions, 5555 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:03,416 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:03,416 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:03,416 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:05,174 INFO L129 PetriNetUnfolder]: 662/2478 cut-off events. [2021-11-20 07:01:05,174 INFO L130 PetriNetUnfolder]: For 60880/60917 co-relation queries the response was YES. [2021-11-20 07:01:05,244 INFO L84 FinitePrefix]: Finished finitePrefix Result has 18656 conditions, 2478 events. 662/2478 cut-off events. For 60880/60917 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 19179 event pairs, 314 based on Foata normal form. 5/2408 useless extension candidates. Maximal degree in co-relation 18368. Up to 967 conditions per place. [2021-11-20 07:01:05,256 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 278 selfloop transitions, 70 changer transitions 76/582 dead transitions. [2021-11-20 07:01:05,256 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 657 places, 582 transitions, 9763 flow [2021-11-20 07:01:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-20 07:01:05,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-11-20 07:01:05,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7026 transitions. [2021-11-20 07:01:05,260 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7603896103896104 [2021-11-20 07:01:05,260 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7026 transitions. [2021-11-20 07:01:05,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7026 transitions. [2021-11-20 07:01:05,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:05,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7026 transitions. [2021-11-20 07:01:05,266 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.6818181818182) internal successors, (7026), 44 states have internal predecessors, (7026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:05,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:05,271 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:05,271 INFO L186 Difference]: Start difference. First operand has 646 places, 448 transitions, 5555 flow. Second operand 44 states and 7026 transitions. [2021-11-20 07:01:05,271 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 657 places, 582 transitions, 9763 flow [2021-11-20 07:01:05,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 629 places, 582 transitions, 9186 flow, removed 279 selfloop flow, removed 28 redundant places. [2021-11-20 07:01:05,951 INFO L242 Difference]: Finished difference. Result has 663 places, 457 transitions, 5950 flow [2021-11-20 07:01:05,951 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5419, PETRI_DIFFERENCE_MINUEND_PLACES=586, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=448, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=382, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=5950, PETRI_PLACES=663, PETRI_TRANSITIONS=457} [2021-11-20 07:01:05,951 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 476 predicate places. [2021-11-20 07:01:05,952 INFO L470 AbstractCegarLoop]: Abstraction has has 663 places, 457 transitions, 5950 flow [2021-11-20 07:01:05,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:05,952 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:05,952 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] [2021-11-20 07:01:05,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-11-20 07:01:05,952 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:05,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:05,953 INFO L85 PathProgramCache]: Analyzing trace with hash 466590036, now seen corresponding path program 66 times [2021-11-20 07:01:05,953 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:05,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411855268] [2021-11-20 07:01:05,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:05,953 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:06,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:06,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:06,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411855268] [2021-11-20 07:01:06,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411855268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:06,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:06,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:06,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679483880] [2021-11-20 07:01:06,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:06,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:06,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:06,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:06,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:06,113 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:06,114 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 663 places, 457 transitions, 5950 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:06,114 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:06,115 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:06,115 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:08,042 INFO L129 PetriNetUnfolder]: 684/2549 cut-off events. [2021-11-20 07:01:08,042 INFO L130 PetriNetUnfolder]: For 65228/65269 co-relation queries the response was YES. [2021-11-20 07:01:08,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 19514 conditions, 2549 events. 684/2549 cut-off events. For 65228/65269 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 19820 event pairs, 325 based on Foata normal form. 5/2478 useless extension candidates. Maximal degree in co-relation 19219. Up to 967 conditions per place. [2021-11-20 07:01:08,133 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 276 selfloop transitions, 86 changer transitions 68/588 dead transitions. [2021-11-20 07:01:08,133 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 666 places, 588 transitions, 9874 flow [2021-11-20 07:01:08,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 07:01:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-20 07:01:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5605 transitions. [2021-11-20 07:01:08,136 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625850340136054 [2021-11-20 07:01:08,136 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5605 transitions. [2021-11-20 07:01:08,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5605 transitions. [2021-11-20 07:01:08,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:08,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5605 transitions. [2021-11-20 07:01:08,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.14285714285714) internal successors, (5605), 35 states have internal predecessors, (5605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:08,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:08,145 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:08,145 INFO L186 Difference]: Start difference. First operand has 663 places, 457 transitions, 5950 flow. Second operand 35 states and 5605 transitions. [2021-11-20 07:01:08,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 666 places, 588 transitions, 9874 flow [2021-11-20 07:01:08,662 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 638 places, 588 transitions, 9230 flow, removed 268 selfloop flow, removed 28 redundant places. [2021-11-20 07:01:08,670 INFO L242 Difference]: Finished difference. Result has 664 places, 476 transitions, 6452 flow [2021-11-20 07:01:08,671 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=5700, PETRI_DIFFERENCE_MINUEND_PLACES=604, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=457, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=6452, PETRI_PLACES=664, PETRI_TRANSITIONS=476} [2021-11-20 07:01:08,671 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 477 predicate places. [2021-11-20 07:01:08,671 INFO L470 AbstractCegarLoop]: Abstraction has has 664 places, 476 transitions, 6452 flow [2021-11-20 07:01:08,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:08,671 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:08,672 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] [2021-11-20 07:01:08,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-11-20 07:01:08,672 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:08,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:08,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1922201906, now seen corresponding path program 67 times [2021-11-20 07:01:08,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:08,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [153118497] [2021-11-20 07:01:08,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:08,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:08,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:08,821 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:08,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [153118497] [2021-11-20 07:01:08,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [153118497] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:08,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:08,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:08,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605705475] [2021-11-20 07:01:08,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:08,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:08,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:08,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:08,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:08,823 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:08,824 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 664 places, 476 transitions, 6452 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:08,824 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:08,824 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:08,825 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:10,650 INFO L129 PetriNetUnfolder]: 703/2612 cut-off events. [2021-11-20 07:01:10,650 INFO L130 PetriNetUnfolder]: For 67305/67324 co-relation queries the response was YES. [2021-11-20 07:01:10,732 INFO L84 FinitePrefix]: Finished finitePrefix Result has 20226 conditions, 2612 events. 703/2612 cut-off events. For 67305/67324 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 20507 event pairs, 337 based on Foata normal form. 3/2538 useless extension candidates. Maximal degree in co-relation 19932. Up to 967 conditions per place. [2021-11-20 07:01:10,746 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 275 selfloop transitions, 96 changer transitions 64/593 dead transitions. [2021-11-20 07:01:10,746 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 680 places, 593 transitions, 10201 flow [2021-11-20 07:01:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 07:01:10,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 07:01:10,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2021-11-20 07:01:10,749 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2021-11-20 07:01:10,749 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2021-11-20 07:01:10,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2021-11-20 07:01:10,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:10,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2021-11-20 07:01:10,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:10,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:10,760 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:10,760 INFO L186 Difference]: Start difference. First operand has 664 places, 476 transitions, 6452 flow. Second operand 38 states and 6079 transitions. [2021-11-20 07:01:10,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 680 places, 593 transitions, 10201 flow [2021-11-20 07:01:11,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 661 places, 593 transitions, 9701 flow, removed 166 selfloop flow, removed 19 redundant places. [2021-11-20 07:01:11,341 INFO L242 Difference]: Finished difference. Result has 682 places, 494 transitions, 6994 flow [2021-11-20 07:01:11,341 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6216, PETRI_DIFFERENCE_MINUEND_PLACES=624, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=476, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=390, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=6994, PETRI_PLACES=682, PETRI_TRANSITIONS=494} [2021-11-20 07:01:11,341 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 495 predicate places. [2021-11-20 07:01:11,341 INFO L470 AbstractCegarLoop]: Abstraction has has 682 places, 494 transitions, 6994 flow [2021-11-20 07:01:11,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:11,342 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:11,342 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] [2021-11-20 07:01:11,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-11-20 07:01:11,342 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:11,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:11,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1986573346, now seen corresponding path program 68 times [2021-11-20 07:01:11,342 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:11,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551475443] [2021-11-20 07:01:11,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:11,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:11,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:11,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:11,498 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:11,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551475443] [2021-11-20 07:01:11,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551475443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:11,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:11,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:11,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516884757] [2021-11-20 07:01:11,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:11,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:11,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:11,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:11,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:11,500 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:11,501 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 682 places, 494 transitions, 6994 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:11,501 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:11,501 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:11,501 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:13,348 INFO L129 PetriNetUnfolder]: 726/2680 cut-off events. [2021-11-20 07:01:13,348 INFO L130 PetriNetUnfolder]: For 74284/74325 co-relation queries the response was YES. [2021-11-20 07:01:13,421 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21306 conditions, 2680 events. 726/2680 cut-off events. For 74284/74325 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 21221 event pairs, 355 based on Foata normal form. 5/2605 useless extension candidates. Maximal degree in co-relation 21006. Up to 967 conditions per place. [2021-11-20 07:01:13,435 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 287 selfloop transitions, 103 changer transitions 65/613 dead transitions. [2021-11-20 07:01:13,436 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 613 transitions, 10896 flow [2021-11-20 07:01:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 07:01:13,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-11-20 07:01:13,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2021-11-20 07:01:13,439 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2021-11-20 07:01:13,439 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2021-11-20 07:01:13,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2021-11-20 07:01:13,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:13,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2021-11-20 07:01:13,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:13,447 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:13,448 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:13,448 INFO L186 Difference]: Start difference. First operand has 682 places, 494 transitions, 6994 flow. Second operand 36 states and 5770 transitions. [2021-11-20 07:01:13,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 613 transitions, 10896 flow [2021-11-20 07:01:14,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 676 places, 613 transitions, 10411 flow, removed 188 selfloop flow, removed 17 redundant places. [2021-11-20 07:01:14,101 INFO L242 Difference]: Finished difference. Result has 702 places, 513 transitions, 7645 flow [2021-11-20 07:01:14,102 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=6763, PETRI_DIFFERENCE_MINUEND_PLACES=641, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=494, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=401, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=7645, PETRI_PLACES=702, PETRI_TRANSITIONS=513} [2021-11-20 07:01:14,102 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 515 predicate places. [2021-11-20 07:01:14,102 INFO L470 AbstractCegarLoop]: Abstraction has has 702 places, 513 transitions, 7645 flow [2021-11-20 07:01:14,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:14,103 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:14,103 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] [2021-11-20 07:01:14,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-11-20 07:01:14,103 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:14,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:14,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1817930050, now seen corresponding path program 69 times [2021-11-20 07:01:14,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:14,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878243395] [2021-11-20 07:01:14,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:14,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:14,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:14,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:14,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878243395] [2021-11-20 07:01:14,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878243395] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:14,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:14,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:14,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560485326] [2021-11-20 07:01:14,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:14,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:14,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:14,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:14,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:14,271 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:14,273 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 513 transitions, 7645 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:14,273 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:14,273 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:14,273 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:16,245 INFO L129 PetriNetUnfolder]: 720/2680 cut-off events. [2021-11-20 07:01:16,245 INFO L130 PetriNetUnfolder]: For 78981/79021 co-relation queries the response was YES. [2021-11-20 07:01:16,329 INFO L84 FinitePrefix]: Finished finitePrefix Result has 21558 conditions, 2680 events. 720/2680 cut-off events. For 78981/79021 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 21293 event pairs, 336 based on Foata normal form. 5/2605 useless extension candidates. Maximal degree in co-relation 21246. Up to 967 conditions per place. [2021-11-20 07:01:16,344 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 292 selfloop transitions, 104 changer transitions 65/619 dead transitions. [2021-11-20 07:01:16,344 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 716 places, 619 transitions, 11354 flow [2021-11-20 07:01:16,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 07:01:16,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-20 07:01:16,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2021-11-20 07:01:16,347 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2021-11-20 07:01:16,347 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2021-11-20 07:01:16,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2021-11-20 07:01:16,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:16,348 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2021-11-20 07:01:16,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:16,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:16,361 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:16,361 INFO L186 Difference]: Start difference. First operand has 702 places, 513 transitions, 7645 flow. Second operand 37 states and 5925 transitions. [2021-11-20 07:01:16,362 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 716 places, 619 transitions, 11354 flow [2021-11-20 07:01:17,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 696 places, 619 transitions, 10812 flow, removed 217 selfloop flow, removed 20 redundant places. [2021-11-20 07:01:17,068 INFO L242 Difference]: Finished difference. Result has 720 places, 521 transitions, 7955 flow [2021-11-20 07:01:17,069 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7407, PETRI_DIFFERENCE_MINUEND_PLACES=660, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=513, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=412, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7955, PETRI_PLACES=720, PETRI_TRANSITIONS=521} [2021-11-20 07:01:17,069 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 533 predicate places. [2021-11-20 07:01:17,069 INFO L470 AbstractCegarLoop]: Abstraction has has 720 places, 521 transitions, 7955 flow [2021-11-20 07:01:17,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:17,070 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:17,070 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] [2021-11-20 07:01:17,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2021-11-20 07:01:17,071 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:17,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:17,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1415025188, now seen corresponding path program 70 times [2021-11-20 07:01:17,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:17,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106583990] [2021-11-20 07:01:17,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:17,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:17,213 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:17,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106583990] [2021-11-20 07:01:17,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106583990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:17,214 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:17,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:17,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080269870] [2021-11-20 07:01:17,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:17,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:17,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:17,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:17,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:17,217 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:17,219 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 720 places, 521 transitions, 7955 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:17,219 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:17,219 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:17,219 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:19,328 INFO L129 PetriNetUnfolder]: 743/2756 cut-off events. [2021-11-20 07:01:19,328 INFO L130 PetriNetUnfolder]: For 85038/85057 co-relation queries the response was YES. [2021-11-20 07:01:19,406 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22418 conditions, 2756 events. 743/2756 cut-off events. For 85038/85057 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 22092 event pairs, 345 based on Foata normal form. 3/2677 useless extension candidates. Maximal degree in co-relation 22099. Up to 967 conditions per place. [2021-11-20 07:01:19,421 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 328 selfloop transitions, 96 changer transitions 68/650 dead transitions. [2021-11-20 07:01:19,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 732 places, 650 transitions, 12299 flow [2021-11-20 07:01:19,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 07:01:19,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-11-20 07:01:19,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5766 transitions. [2021-11-20 07:01:19,426 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7626984126984127 [2021-11-20 07:01:19,426 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5766 transitions. [2021-11-20 07:01:19,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5766 transitions. [2021-11-20 07:01:19,427 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:19,427 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5766 transitions. [2021-11-20 07:01:19,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.16666666666666) internal successors, (5766), 36 states have internal predecessors, (5766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:19,438 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:19,440 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:19,440 INFO L186 Difference]: Start difference. First operand has 720 places, 521 transitions, 7955 flow. Second operand 36 states and 5766 transitions. [2021-11-20 07:01:19,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 732 places, 650 transitions, 12299 flow [2021-11-20 07:01:20,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 650 transitions, 11801 flow, removed 184 selfloop flow, removed 20 redundant places. [2021-11-20 07:01:20,225 INFO L242 Difference]: Finished difference. Result has 737 places, 543 transitions, 8667 flow [2021-11-20 07:01:20,225 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=7705, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=521, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=438, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=8667, PETRI_PLACES=737, PETRI_TRANSITIONS=543} [2021-11-20 07:01:20,225 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 550 predicate places. [2021-11-20 07:01:20,225 INFO L470 AbstractCegarLoop]: Abstraction has has 737 places, 543 transitions, 8667 flow [2021-11-20 07:01:20,226 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:20,226 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:20,226 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] [2021-11-20 07:01:20,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2021-11-20 07:01:20,226 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:20,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:20,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1883380732, now seen corresponding path program 71 times [2021-11-20 07:01:20,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:20,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925260183] [2021-11-20 07:01:20,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:20,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:20,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:20,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925260183] [2021-11-20 07:01:20,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925260183] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:20,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:20,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:20,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557954617] [2021-11-20 07:01:20,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:20,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:20,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:20,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:20,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:20,384 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:20,385 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 737 places, 543 transitions, 8667 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:20,385 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:20,385 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:20,386 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:22,595 INFO L129 PetriNetUnfolder]: 762/2787 cut-off events. [2021-11-20 07:01:22,596 INFO L130 PetriNetUnfolder]: For 93851/93892 co-relation queries the response was YES. [2021-11-20 07:01:22,698 INFO L84 FinitePrefix]: Finished finitePrefix Result has 23293 conditions, 2787 events. 762/2787 cut-off events. For 93851/93892 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 22427 event pairs, 308 based on Foata normal form. 5/2712 useless extension candidates. Maximal degree in co-relation 22966. Up to 967 conditions per place. [2021-11-20 07:01:22,713 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 335 selfloop transitions, 106 changer transitions 65/664 dead transitions. [2021-11-20 07:01:22,713 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 752 places, 664 transitions, 13090 flow [2021-11-20 07:01:22,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 07:01:22,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 07:01:22,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6081 transitions. [2021-11-20 07:01:22,716 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.76203007518797 [2021-11-20 07:01:22,716 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6081 transitions. [2021-11-20 07:01:22,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6081 transitions. [2021-11-20 07:01:22,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:22,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6081 transitions. [2021-11-20 07:01:22,721 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.02631578947367) internal successors, (6081), 38 states have internal predecessors, (6081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:22,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:22,726 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:22,726 INFO L186 Difference]: Start difference. First operand has 737 places, 543 transitions, 8667 flow. Second operand 38 states and 6081 transitions. [2021-11-20 07:01:22,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 752 places, 664 transitions, 13090 flow [2021-11-20 07:01:23,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 664 transitions, 12504 flow, removed 252 selfloop flow, removed 20 redundant places. [2021-11-20 07:01:23,527 INFO L242 Difference]: Finished difference. Result has 757 places, 558 transitions, 9172 flow [2021-11-20 07:01:23,528 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8416, PETRI_DIFFERENCE_MINUEND_PLACES=695, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=543, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=9172, PETRI_PLACES=757, PETRI_TRANSITIONS=558} [2021-11-20 07:01:23,528 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 570 predicate places. [2021-11-20 07:01:23,528 INFO L470 AbstractCegarLoop]: Abstraction has has 757 places, 558 transitions, 9172 flow [2021-11-20 07:01:23,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:23,528 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:23,529 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] [2021-11-20 07:01:23,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2021-11-20 07:01:23,529 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:23,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:23,529 INFO L85 PathProgramCache]: Analyzing trace with hash 649784412, now seen corresponding path program 72 times [2021-11-20 07:01:23,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:23,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601807675] [2021-11-20 07:01:23,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:23,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:23,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:23,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:23,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:23,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601807675] [2021-11-20 07:01:23,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601807675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:23,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:23,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:23,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806517996] [2021-11-20 07:01:23,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:23,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:23,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:23,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:23,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:23,681 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:23,682 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 757 places, 558 transitions, 9172 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:23,682 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:23,682 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:23,682 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:25,958 INFO L129 PetriNetUnfolder]: 781/2869 cut-off events. [2021-11-20 07:01:25,959 INFO L130 PetriNetUnfolder]: For 104581/104600 co-relation queries the response was YES. [2021-11-20 07:01:26,033 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24424 conditions, 2869 events. 781/2869 cut-off events. For 104581/104600 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 23283 event pairs, 354 based on Foata normal form. 3/2787 useless extension candidates. Maximal degree in co-relation 24090. Up to 967 conditions per place. [2021-11-20 07:01:26,048 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 348 selfloop transitions, 107 changer transitions 66/679 dead transitions. [2021-11-20 07:01:26,048 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 769 places, 679 transitions, 13734 flow [2021-11-20 07:01:26,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 07:01:26,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-20 07:01:26,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5929 transitions. [2021-11-20 07:01:26,051 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763063063063063 [2021-11-20 07:01:26,051 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5929 transitions. [2021-11-20 07:01:26,051 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5929 transitions. [2021-11-20 07:01:26,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:26,052 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5929 transitions. [2021-11-20 07:01:26,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.24324324324326) internal successors, (5929), 37 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:26,059 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:26,060 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:26,060 INFO L186 Difference]: Start difference. First operand has 757 places, 558 transitions, 9172 flow. Second operand 37 states and 5929 transitions. [2021-11-20 07:01:26,060 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 769 places, 679 transitions, 13734 flow [2021-11-20 07:01:26,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 749 places, 679 transitions, 13266 flow, removed 199 selfloop flow, removed 20 redundant places. [2021-11-20 07:01:26,978 INFO L242 Difference]: Finished difference. Result has 773 places, 576 transitions, 9906 flow [2021-11-20 07:01:26,978 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=8989, PETRI_DIFFERENCE_MINUEND_PLACES=713, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=9906, PETRI_PLACES=773, PETRI_TRANSITIONS=576} [2021-11-20 07:01:26,979 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 586 predicate places. [2021-11-20 07:01:26,979 INFO L470 AbstractCegarLoop]: Abstraction has has 773 places, 576 transitions, 9906 flow [2021-11-20 07:01:26,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:26,979 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:26,979 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] [2021-11-20 07:01:26,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2021-11-20 07:01:26,980 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:26,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:26,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1629108434, now seen corresponding path program 73 times [2021-11-20 07:01:26,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:26,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677021973] [2021-11-20 07:01:26,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:26,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:26,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:27,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:27,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:27,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677021973] [2021-11-20 07:01:27,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677021973] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:27,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:27,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:27,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486909350] [2021-11-20 07:01:27,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:27,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:27,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:27,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:27,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:27,122 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:27,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 773 places, 576 transitions, 9906 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:27,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:27,124 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:27,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:29,301 INFO L129 PetriNetUnfolder]: 775/2860 cut-off events. [2021-11-20 07:01:29,301 INFO L130 PetriNetUnfolder]: For 108217/108258 co-relation queries the response was YES. [2021-11-20 07:01:29,404 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24503 conditions, 2860 events. 775/2860 cut-off events. For 108217/108258 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 23283 event pairs, 347 based on Foata normal form. 5/2781 useless extension candidates. Maximal degree in co-relation 24163. Up to 967 conditions per place. [2021-11-20 07:01:29,421 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 351 selfloop transitions, 110 changer transitions 66/685 dead transitions. [2021-11-20 07:01:29,421 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 787 places, 685 transitions, 14238 flow [2021-11-20 07:01:29,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 07:01:29,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 07:01:29,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6083 transitions. [2021-11-20 07:01:29,426 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762280701754386 [2021-11-20 07:01:29,427 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6083 transitions. [2021-11-20 07:01:29,427 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6083 transitions. [2021-11-20 07:01:29,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:29,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6083 transitions. [2021-11-20 07:01:29,433 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.07894736842104) internal successors, (6083), 38 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:29,437 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:29,438 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:29,438 INFO L186 Difference]: Start difference. First operand has 773 places, 576 transitions, 9906 flow. Second operand 38 states and 6083 transitions. [2021-11-20 07:01:29,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 787 places, 685 transitions, 14238 flow [2021-11-20 07:01:30,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 768 places, 685 transitions, 13691 flow, removed 219 selfloop flow, removed 19 redundant places. [2021-11-20 07:01:30,480 INFO L242 Difference]: Finished difference. Result has 791 places, 583 transitions, 10210 flow [2021-11-20 07:01:30,480 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9645, PETRI_DIFFERENCE_MINUEND_PLACES=731, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10210, PETRI_PLACES=791, PETRI_TRANSITIONS=583} [2021-11-20 07:01:30,480 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 604 predicate places. [2021-11-20 07:01:30,480 INFO L470 AbstractCegarLoop]: Abstraction has has 791 places, 583 transitions, 10210 flow [2021-11-20 07:01:30,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:30,481 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:30,481 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] [2021-11-20 07:01:30,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2021-11-20 07:01:30,482 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:30,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:30,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1857037922, now seen corresponding path program 74 times [2021-11-20 07:01:30,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:30,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39845869] [2021-11-20 07:01:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:30,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:30,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:30,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39845869] [2021-11-20 07:01:30,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39845869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:30,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:30,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:30,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233176661] [2021-11-20 07:01:30,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:30,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:30,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:30,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:30,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:30,661 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:30,662 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 791 places, 583 transitions, 10210 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:30,662 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:30,662 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:30,662 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:32,942 INFO L129 PetriNetUnfolder]: 769/2852 cut-off events. [2021-11-20 07:01:32,942 INFO L130 PetriNetUnfolder]: For 109880/109899 co-relation queries the response was YES. [2021-11-20 07:01:33,029 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24308 conditions, 2852 events. 769/2852 cut-off events. For 109880/109899 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 23232 event pairs, 312 based on Foata normal form. 3/2769 useless extension candidates. Maximal degree in co-relation 23961. Up to 967 conditions per place. [2021-11-20 07:01:33,044 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 354 selfloop transitions, 115 changer transitions 67/694 dead transitions. [2021-11-20 07:01:33,044 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 803 places, 694 transitions, 14648 flow [2021-11-20 07:01:33,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 07:01:33,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-20 07:01:33,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5921 transitions. [2021-11-20 07:01:33,047 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762033462033462 [2021-11-20 07:01:33,047 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5921 transitions. [2021-11-20 07:01:33,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5921 transitions. [2021-11-20 07:01:33,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:33,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5921 transitions. [2021-11-20 07:01:33,052 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.02702702702703) internal successors, (5921), 37 states have internal predecessors, (5921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:33,056 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:33,056 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:33,056 INFO L186 Difference]: Start difference. First operand has 791 places, 583 transitions, 10210 flow. Second operand 37 states and 5921 transitions. [2021-11-20 07:01:33,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 803 places, 694 transitions, 14648 flow [2021-11-20 07:01:34,001 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 782 places, 694 transitions, 14110 flow, removed 203 selfloop flow, removed 21 redundant places. [2021-11-20 07:01:34,012 INFO L242 Difference]: Finished difference. Result has 805 places, 594 transitions, 10654 flow [2021-11-20 07:01:34,013 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=9918, PETRI_DIFFERENCE_MINUEND_PLACES=746, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=583, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=474, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=10654, PETRI_PLACES=805, PETRI_TRANSITIONS=594} [2021-11-20 07:01:34,013 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 618 predicate places. [2021-11-20 07:01:34,013 INFO L470 AbstractCegarLoop]: Abstraction has has 805 places, 594 transitions, 10654 flow [2021-11-20 07:01:34,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:34,013 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:34,014 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] [2021-11-20 07:01:34,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2021-11-20 07:01:34,014 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:34,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:34,014 INFO L85 PathProgramCache]: Analyzing trace with hash 60936440, now seen corresponding path program 75 times [2021-11-20 07:01:34,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:34,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436385363] [2021-11-20 07:01:34,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:34,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:34,173 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:34,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436385363] [2021-11-20 07:01:34,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436385363] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:34,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:34,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:34,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046763362] [2021-11-20 07:01:34,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:34,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:34,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:34,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:34,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:34,177 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:34,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 805 places, 594 transitions, 10654 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:34,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:34,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:34,179 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:36,624 INFO L129 PetriNetUnfolder]: 763/2890 cut-off events. [2021-11-20 07:01:36,625 INFO L130 PetriNetUnfolder]: For 112530/112549 co-relation queries the response was YES. [2021-11-20 07:01:36,730 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24418 conditions, 2890 events. 763/2890 cut-off events. For 112530/112549 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 23725 event pairs, 297 based on Foata normal form. 3/2817 useless extension candidates. Maximal degree in co-relation 24066. Up to 967 conditions per place. [2021-11-20 07:01:36,747 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 348 selfloop transitions, 126 changer transitions 67/699 dead transitions. [2021-11-20 07:01:36,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 819 places, 699 transitions, 15019 flow [2021-11-20 07:01:36,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 07:01:36,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 07:01:36,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6075 transitions. [2021-11-20 07:01:36,751 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7612781954887218 [2021-11-20 07:01:36,751 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6075 transitions. [2021-11-20 07:01:36,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6075 transitions. [2021-11-20 07:01:36,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:36,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6075 transitions. [2021-11-20 07:01:36,756 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.8684210526316) internal successors, (6075), 38 states have internal predecessors, (6075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:36,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:36,761 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:36,761 INFO L186 Difference]: Start difference. First operand has 805 places, 594 transitions, 10654 flow. Second operand 38 states and 6075 transitions. [2021-11-20 07:01:36,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 819 places, 699 transitions, 15019 flow [2021-11-20 07:01:37,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 798 places, 699 transitions, 14410 flow, removed 239 selfloop flow, removed 21 redundant places. [2021-11-20 07:01:37,869 INFO L242 Difference]: Finished difference. Result has 820 places, 600 transitions, 10879 flow [2021-11-20 07:01:37,870 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10311, PETRI_DIFFERENCE_MINUEND_PLACES=761, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=594, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=470, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=10879, PETRI_PLACES=820, PETRI_TRANSITIONS=600} [2021-11-20 07:01:37,870 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 633 predicate places. [2021-11-20 07:01:37,870 INFO L470 AbstractCegarLoop]: Abstraction has has 820 places, 600 transitions, 10879 flow [2021-11-20 07:01:37,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:37,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:37,870 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] [2021-11-20 07:01:37,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2021-11-20 07:01:37,870 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:37,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:37,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1247751312, now seen corresponding path program 76 times [2021-11-20 07:01:37,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:37,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645668566] [2021-11-20 07:01:37,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:37,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:38,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:38,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645668566] [2021-11-20 07:01:38,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645668566] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:38,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:38,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:38,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219333507] [2021-11-20 07:01:38,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:38,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:38,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:38,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:38,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:38,010 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:38,011 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 820 places, 600 transitions, 10879 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:38,011 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:38,011 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:38,012 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:40,498 INFO L129 PetriNetUnfolder]: 805/3072 cut-off events. [2021-11-20 07:01:40,498 INFO L130 PetriNetUnfolder]: For 118227/118246 co-relation queries the response was YES. [2021-11-20 07:01:40,598 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25950 conditions, 3072 events. 805/3072 cut-off events. For 118227/118246 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 25761 event pairs, 302 based on Foata normal form. 3/3006 useless extension candidates. Maximal degree in co-relation 25594. Up to 969 conditions per place. [2021-11-20 07:01:40,613 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 375 selfloop transitions, 175 changer transitions 90/798 dead transitions. [2021-11-20 07:01:40,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 841 places, 798 transitions, 17327 flow [2021-11-20 07:01:40,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2021-11-20 07:01:40,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2021-11-20 07:01:40,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 7341 transitions. [2021-11-20 07:01:40,617 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7599378881987577 [2021-11-20 07:01:40,617 INFO L72 ComplementDD]: Start complementDD. Operand 46 states and 7341 transitions. [2021-11-20 07:01:40,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 46 states and 7341 transitions. [2021-11-20 07:01:40,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:40,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 46 states and 7341 transitions. [2021-11-20 07:01:40,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 47 states, 46 states have (on average 159.58695652173913) internal successors, (7341), 46 states have internal predecessors, (7341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:40,627 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:40,628 INFO L81 ComplementDD]: Finished complementDD. Result has 47 states, 47 states have (on average 210.0) internal successors, (9870), 47 states have internal predecessors, (9870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:40,628 INFO L186 Difference]: Start difference. First operand has 820 places, 600 transitions, 10879 flow. Second operand 46 states and 7341 transitions. [2021-11-20 07:01:40,628 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 841 places, 798 transitions, 17327 flow [2021-11-20 07:01:41,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 819 places, 798 transitions, 16862 flow, removed 145 selfloop flow, removed 22 redundant places. [2021-11-20 07:01:41,747 INFO L242 Difference]: Finished difference. Result has 852 places, 626 transitions, 11754 flow [2021-11-20 07:01:41,748 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=10570, PETRI_DIFFERENCE_MINUEND_PLACES=774, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=600, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=46, PETRI_FLOW=11754, PETRI_PLACES=852, PETRI_TRANSITIONS=626} [2021-11-20 07:01:41,748 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 665 predicate places. [2021-11-20 07:01:41,748 INFO L470 AbstractCegarLoop]: Abstraction has has 852 places, 626 transitions, 11754 flow [2021-11-20 07:01:41,749 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:41,749 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:41,749 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] [2021-11-20 07:01:41,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2021-11-20 07:01:41,749 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:41,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:41,750 INFO L85 PathProgramCache]: Analyzing trace with hash -2041822450, now seen corresponding path program 77 times [2021-11-20 07:01:41,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:41,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196114941] [2021-11-20 07:01:41,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:41,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:41,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:41,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:41,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196114941] [2021-11-20 07:01:41,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196114941] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:41,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:41,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:41,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821762996] [2021-11-20 07:01:41,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:41,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:41,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:41,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:41,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:41,891 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:41,892 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 852 places, 626 transitions, 11754 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:41,892 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:41,892 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:41,892 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:44,448 INFO L129 PetriNetUnfolder]: 813/3031 cut-off events. [2021-11-20 07:01:44,448 INFO L130 PetriNetUnfolder]: For 113812/113831 co-relation queries the response was YES. [2021-11-20 07:01:44,568 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25627 conditions, 3031 events. 813/3031 cut-off events. For 113812/113831 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 25210 event pairs, 331 based on Foata normal form. 3/2951 useless extension candidates. Maximal degree in co-relation 25257. Up to 990 conditions per place. [2021-11-20 07:01:44,584 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 398 selfloop transitions, 153 changer transitions 105/814 dead transitions. [2021-11-20 07:01:44,584 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 861 places, 814 transitions, 18206 flow [2021-11-20 07:01:44,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-20 07:01:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2021-11-20 07:01:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 6867 transitions. [2021-11-20 07:01:44,588 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7604651162790698 [2021-11-20 07:01:44,588 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 6867 transitions. [2021-11-20 07:01:44,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 6867 transitions. [2021-11-20 07:01:44,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:44,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 6867 transitions. [2021-11-20 07:01:44,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 159.69767441860466) internal successors, (6867), 43 states have internal predecessors, (6867), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:44,598 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:44,599 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 210.0) internal successors, (9240), 44 states have internal predecessors, (9240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:44,600 INFO L186 Difference]: Start difference. First operand has 852 places, 626 transitions, 11754 flow. Second operand 43 states and 6867 transitions. [2021-11-20 07:01:44,600 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 861 places, 814 transitions, 18206 flow [2021-11-20 07:01:45,870 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 832 places, 814 transitions, 17953 flow, removed 83 selfloop flow, removed 29 redundant places. [2021-11-20 07:01:45,883 INFO L242 Difference]: Finished difference. Result has 864 places, 647 transitions, 12789 flow [2021-11-20 07:01:45,884 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=11590, PETRI_DIFFERENCE_MINUEND_PLACES=790, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=12789, PETRI_PLACES=864, PETRI_TRANSITIONS=647} [2021-11-20 07:01:45,884 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 677 predicate places. [2021-11-20 07:01:45,884 INFO L470 AbstractCegarLoop]: Abstraction has has 864 places, 647 transitions, 12789 flow [2021-11-20 07:01:45,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:45,884 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:45,884 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] [2021-11-20 07:01:45,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2021-11-20 07:01:45,885 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:45,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:45,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1123387136, now seen corresponding path program 78 times [2021-11-20 07:01:45,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:45,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633874084] [2021-11-20 07:01:45,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:45,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:45,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:46,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:46,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633874084] [2021-11-20 07:01:46,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633874084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:46,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:46,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:46,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675005552] [2021-11-20 07:01:46,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:46,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:46,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:46,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:46,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:46,023 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:46,024 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 864 places, 647 transitions, 12789 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:46,024 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:46,024 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:46,024 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:48,569 INFO L129 PetriNetUnfolder]: 824/3093 cut-off events. [2021-11-20 07:01:48,570 INFO L130 PetriNetUnfolder]: For 122096/122115 co-relation queries the response was YES. [2021-11-20 07:01:48,691 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26512 conditions, 3093 events. 824/3093 cut-off events. For 122096/122115 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 25908 event pairs, 368 based on Foata normal form. 3/3003 useless extension candidates. Maximal degree in co-relation 26137. Up to 1011 conditions per place. [2021-11-20 07:01:48,710 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 350 selfloop transitions, 190 changer transitions 81/779 dead transitions. [2021-11-20 07:01:48,710 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 878 places, 779 transitions, 17485 flow [2021-11-20 07:01:48,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2021-11-20 07:01:48,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-11-20 07:01:48,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 7187 transitions. [2021-11-20 07:01:48,714 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7605291005291005 [2021-11-20 07:01:48,714 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 7187 transitions. [2021-11-20 07:01:48,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 7187 transitions. [2021-11-20 07:01:48,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:48,716 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 7187 transitions. [2021-11-20 07:01:48,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 159.7111111111111) internal successors, (7187), 45 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:48,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:48,727 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 210.0) internal successors, (9660), 46 states have internal predecessors, (9660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:48,727 INFO L186 Difference]: Start difference. First operand has 864 places, 647 transitions, 12789 flow. Second operand 45 states and 7187 transitions. [2021-11-20 07:01:48,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 878 places, 779 transitions, 17485 flow [2021-11-20 07:01:50,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 838 places, 779 transitions, 16575 flow, removed 187 selfloop flow, removed 40 redundant places. [2021-11-20 07:01:50,099 INFO L242 Difference]: Finished difference. Result has 872 places, 664 transitions, 13127 flow [2021-11-20 07:01:50,100 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12092, PETRI_DIFFERENCE_MINUEND_PLACES=794, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=647, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=468, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=13127, PETRI_PLACES=872, PETRI_TRANSITIONS=664} [2021-11-20 07:01:50,101 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 685 predicate places. [2021-11-20 07:01:50,101 INFO L470 AbstractCegarLoop]: Abstraction has has 872 places, 664 transitions, 13127 flow [2021-11-20 07:01:50,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:50,101 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:50,102 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] [2021-11-20 07:01:50,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2021-11-20 07:01:50,102 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:50,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:50,102 INFO L85 PathProgramCache]: Analyzing trace with hash -873676812, now seen corresponding path program 79 times [2021-11-20 07:01:50,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:50,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719192850] [2021-11-20 07:01:50,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:50,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:50,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:50,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:50,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:50,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719192850] [2021-11-20 07:01:50,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719192850] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:50,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:50,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:50,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057643562] [2021-11-20 07:01:50,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:50,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:50,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:50,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:50,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:50,285 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:50,287 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 872 places, 664 transitions, 13127 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:50,287 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:50,287 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:50,287 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:53,226 INFO L129 PetriNetUnfolder]: 818/3057 cut-off events. [2021-11-20 07:01:53,226 INFO L130 PetriNetUnfolder]: For 110119/110160 co-relation queries the response was YES. [2021-11-20 07:01:53,311 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25929 conditions, 3057 events. 818/3057 cut-off events. For 110119/110160 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 25533 event pairs, 345 based on Foata normal form. 5/2972 useless extension candidates. Maximal degree in co-relation 25553. Up to 1007 conditions per place. [2021-11-20 07:01:53,327 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 411 selfloop transitions, 145 changer transitions 93/807 dead transitions. [2021-11-20 07:01:53,327 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 883 places, 807 transitions, 18408 flow [2021-11-20 07:01:53,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-11-20 07:01:53,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-11-20 07:01:53,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 7032 transitions. [2021-11-20 07:01:53,330 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7610389610389611 [2021-11-20 07:01:53,331 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 7032 transitions. [2021-11-20 07:01:53,331 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 7032 transitions. [2021-11-20 07:01:53,332 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:53,332 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 7032 transitions. [2021-11-20 07:01:53,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 159.8181818181818) internal successors, (7032), 44 states have internal predecessors, (7032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:53,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:53,342 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 210.0) internal successors, (9450), 45 states have internal predecessors, (9450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:53,342 INFO L186 Difference]: Start difference. First operand has 872 places, 664 transitions, 13127 flow. Second operand 44 states and 7032 transitions. [2021-11-20 07:01:53,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 883 places, 807 transitions, 18408 flow [2021-11-20 07:01:54,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 852 places, 807 transitions, 17846 flow, removed 182 selfloop flow, removed 31 redundant places. [2021-11-20 07:01:54,431 INFO L242 Difference]: Finished difference. Result has 884 places, 671 transitions, 13536 flow [2021-11-20 07:01:54,432 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12749, PETRI_DIFFERENCE_MINUEND_PLACES=809, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=13536, PETRI_PLACES=884, PETRI_TRANSITIONS=671} [2021-11-20 07:01:54,432 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 697 predicate places. [2021-11-20 07:01:54,432 INFO L470 AbstractCegarLoop]: Abstraction has has 884 places, 671 transitions, 13536 flow [2021-11-20 07:01:54,432 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:54,432 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:54,433 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] [2021-11-20 07:01:54,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2021-11-20 07:01:54,433 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:54,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:54,433 INFO L85 PathProgramCache]: Analyzing trace with hash 656550142, now seen corresponding path program 80 times [2021-11-20 07:01:54,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:54,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139050689] [2021-11-20 07:01:54,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:54,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:54,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:54,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139050689] [2021-11-20 07:01:54,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139050689] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:54,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:54,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:54,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474963848] [2021-11-20 07:01:54,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:54,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:54,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:54,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:54,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:54,604 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:54,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 884 places, 671 transitions, 13536 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:54,605 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:54,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:54,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:01:57,357 INFO L129 PetriNetUnfolder]: 810/3105 cut-off events. [2021-11-20 07:01:57,358 INFO L130 PetriNetUnfolder]: For 108070/108089 co-relation queries the response was YES. [2021-11-20 07:01:57,474 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25896 conditions, 3105 events. 810/3105 cut-off events. For 108070/108089 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 26199 event pairs, 309 based on Foata normal form. 3/3033 useless extension candidates. Maximal degree in co-relation 25516. Up to 1012 conditions per place. [2021-11-20 07:01:57,491 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 389 selfloop transitions, 191 changer transitions 80/818 dead transitions. [2021-11-20 07:01:57,491 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 890 places, 818 transitions, 18636 flow [2021-11-20 07:01:57,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 07:01:57,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 07:01:57,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6079 transitions. [2021-11-20 07:01:57,494 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7617794486215539 [2021-11-20 07:01:57,494 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6079 transitions. [2021-11-20 07:01:57,494 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6079 transitions. [2021-11-20 07:01:57,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:01:57,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6079 transitions. [2021-11-20 07:01:57,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 159.97368421052633) internal successors, (6079), 38 states have internal predecessors, (6079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:57,503 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:57,504 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:57,504 INFO L186 Difference]: Start difference. First operand has 884 places, 671 transitions, 13536 flow. Second operand 38 states and 6079 transitions. [2021-11-20 07:01:57,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 890 places, 818 transitions, 18636 flow [2021-11-20 07:01:58,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 849 places, 818 transitions, 17936 flow, removed 166 selfloop flow, removed 41 redundant places. [2021-11-20 07:01:58,709 INFO L242 Difference]: Finished difference. Result has 872 places, 678 transitions, 13713 flow [2021-11-20 07:01:58,710 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=12980, PETRI_DIFFERENCE_MINUEND_PLACES=812, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=671, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=483, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=13713, PETRI_PLACES=872, PETRI_TRANSITIONS=678} [2021-11-20 07:01:58,710 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 685 predicate places. [2021-11-20 07:01:58,710 INFO L470 AbstractCegarLoop]: Abstraction has has 872 places, 678 transitions, 13713 flow [2021-11-20 07:01:58,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:58,711 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:01:58,711 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] [2021-11-20 07:01:58,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2021-11-20 07:01:58,711 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:01:58,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:01:58,711 INFO L85 PathProgramCache]: Analyzing trace with hash 431153484, now seen corresponding path program 81 times [2021-11-20 07:01:58,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:01:58,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696663981] [2021-11-20 07:01:58,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:01:58,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:01:58,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:01:58,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:01:58,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:01:58,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696663981] [2021-11-20 07:01:58,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696663981] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:01:58,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:01:58,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:01:58,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064959428] [2021-11-20 07:01:58,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:01:58,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:01:58,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:01:58,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:01:58,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:01:58,843 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:01:58,844 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 872 places, 678 transitions, 13713 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:01:58,844 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:01:58,844 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:01:58,844 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:02:01,271 INFO L129 PetriNetUnfolder]: 830/3093 cut-off events. [2021-11-20 07:02:01,271 INFO L130 PetriNetUnfolder]: For 98942/98961 co-relation queries the response was YES. [2021-11-20 07:02:01,376 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25777 conditions, 3093 events. 830/3093 cut-off events. For 98942/98961 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 25845 event pairs, 369 based on Foata normal form. 3/2998 useless extension candidates. Maximal degree in co-relation 25411. Up to 1025 conditions per place. [2021-11-20 07:02:01,393 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 406 selfloop transitions, 158 changer transitions 69/791 dead transitions. [2021-11-20 07:02:01,393 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 884 places, 791 transitions, 17793 flow [2021-11-20 07:02:01,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 07:02:01,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-20 07:02:01,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5933 transitions. [2021-11-20 07:02:01,397 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7635778635778636 [2021-11-20 07:02:01,397 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5933 transitions. [2021-11-20 07:02:01,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5933 transitions. [2021-11-20 07:02:01,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:02:01,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5933 transitions. [2021-11-20 07:02:01,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.35135135135135) internal successors, (5933), 37 states have internal predecessors, (5933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:01,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:01,407 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:01,407 INFO L186 Difference]: Start difference. First operand has 872 places, 678 transitions, 13713 flow. Second operand 37 states and 5933 transitions. [2021-11-20 07:02:01,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 884 places, 791 transitions, 17793 flow [2021-11-20 07:02:02,529 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 860 places, 791 transitions, 17471 flow, removed 93 selfloop flow, removed 24 redundant places. [2021-11-20 07:02:02,547 INFO L242 Difference]: Finished difference. Result has 884 places, 697 transitions, 14465 flow [2021-11-20 07:02:02,548 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=13471, PETRI_DIFFERENCE_MINUEND_PLACES=824, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=678, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=532, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=14465, PETRI_PLACES=884, PETRI_TRANSITIONS=697} [2021-11-20 07:02:02,548 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 697 predicate places. [2021-11-20 07:02:02,548 INFO L470 AbstractCegarLoop]: Abstraction has has 884 places, 697 transitions, 14465 flow [2021-11-20 07:02:02,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:02,549 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:02:02,549 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] [2021-11-20 07:02:02,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2021-11-20 07:02:02,550 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:02:02,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:02,550 INFO L85 PathProgramCache]: Analyzing trace with hash 567309834, now seen corresponding path program 82 times [2021-11-20 07:02:02,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:02,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923264576] [2021-11-20 07:02:02,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:02,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:02,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:02,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:02,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923264576] [2021-11-20 07:02:02,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923264576] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:02,690 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:02,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:02:02,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219457536] [2021-11-20 07:02:02,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:02,691 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:02:02,691 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:02,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:02:02,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:02:02,693 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:02:02,693 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 884 places, 697 transitions, 14465 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:02,694 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:02:02,694 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:02:02,694 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:02:05,318 INFO L129 PetriNetUnfolder]: 838/3137 cut-off events. [2021-11-20 07:02:05,318 INFO L130 PetriNetUnfolder]: For 102873/102892 co-relation queries the response was YES. [2021-11-20 07:02:05,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26383 conditions, 3137 events. 838/3137 cut-off events. For 102873/102892 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 26386 event pairs, 354 based on Foata normal form. 3/3043 useless extension candidates. Maximal degree in co-relation 26014. Up to 1039 conditions per place. [2021-11-20 07:02:05,451 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 420 selfloop transitions, 165 changer transitions 73/816 dead transitions. [2021-11-20 07:02:05,451 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 898 places, 816 transitions, 18927 flow [2021-11-20 07:02:05,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 07:02:05,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 07:02:05,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6087 transitions. [2021-11-20 07:02:05,455 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762781954887218 [2021-11-20 07:02:05,455 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6087 transitions. [2021-11-20 07:02:05,455 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6087 transitions. [2021-11-20 07:02:05,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:02:05,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6087 transitions. [2021-11-20 07:02:05,463 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.18421052631578) internal successors, (6087), 38 states have internal predecessors, (6087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:05,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:05,468 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:05,468 INFO L186 Difference]: Start difference. First operand has 884 places, 697 transitions, 14465 flow. Second operand 38 states and 6087 transitions. [2021-11-20 07:02:05,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 898 places, 816 transitions, 18927 flow [2021-11-20 07:02:06,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 877 places, 816 transitions, 18459 flow, removed 131 selfloop flow, removed 21 redundant places. [2021-11-20 07:02:06,660 INFO L242 Difference]: Finished difference. Result has 900 places, 711 transitions, 15021 flow [2021-11-20 07:02:06,660 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14154, PETRI_DIFFERENCE_MINUEND_PLACES=840, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=697, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=150, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=541, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=15021, PETRI_PLACES=900, PETRI_TRANSITIONS=711} [2021-11-20 07:02:06,661 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 713 predicate places. [2021-11-20 07:02:06,661 INFO L470 AbstractCegarLoop]: Abstraction has has 900 places, 711 transitions, 15021 flow [2021-11-20 07:02:06,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:06,661 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:02:06,661 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] [2021-11-20 07:02:06,661 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2021-11-20 07:02:06,661 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:02:06,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:06,662 INFO L85 PathProgramCache]: Analyzing trace with hash 976809868, now seen corresponding path program 83 times [2021-11-20 07:02:06,662 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:06,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544525692] [2021-11-20 07:02:06,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:06,662 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:06,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:06,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:06,816 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:06,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544525692] [2021-11-20 07:02:06,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544525692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:06,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:06,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:02:06,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769828427] [2021-11-20 07:02:06,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:06,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:02:06,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:06,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:02:06,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:02:06,818 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:02:06,819 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 900 places, 711 transitions, 15021 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:06,819 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:02:06,819 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:02:06,819 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:02:09,376 INFO L129 PetriNetUnfolder]: 860/3202 cut-off events. [2021-11-20 07:02:09,376 INFO L130 PetriNetUnfolder]: For 104519/104538 co-relation queries the response was YES. [2021-11-20 07:02:09,509 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27033 conditions, 3202 events. 860/3202 cut-off events. For 104519/104538 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 27073 event pairs, 369 based on Foata normal form. 3/3102 useless extension candidates. Maximal degree in co-relation 26658. Up to 1051 conditions per place. [2021-11-20 07:02:09,527 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 386 selfloop transitions, 212 changer transitions 69/825 dead transitions. [2021-11-20 07:02:09,527 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 913 places, 825 transitions, 19286 flow [2021-11-20 07:02:09,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 07:02:09,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 07:02:09,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6085 transitions. [2021-11-20 07:02:09,530 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625313283208021 [2021-11-20 07:02:09,530 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6085 transitions. [2021-11-20 07:02:09,530 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6085 transitions. [2021-11-20 07:02:09,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:02:09,531 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6085 transitions. [2021-11-20 07:02:09,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.1315789473684) internal successors, (6085), 38 states have internal predecessors, (6085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:09,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:09,540 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:09,540 INFO L186 Difference]: Start difference. First operand has 900 places, 711 transitions, 15021 flow. Second operand 38 states and 6085 transitions. [2021-11-20 07:02:09,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 913 places, 825 transitions, 19286 flow [2021-11-20 07:02:10,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 893 places, 825 transitions, 18923 flow, removed 90 selfloop flow, removed 20 redundant places. [2021-11-20 07:02:10,752 INFO L242 Difference]: Finished difference. Result has 917 places, 730 transitions, 15856 flow [2021-11-20 07:02:10,752 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=14732, PETRI_DIFFERENCE_MINUEND_PLACES=856, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=711, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=194, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=510, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=15856, PETRI_PLACES=917, PETRI_TRANSITIONS=730} [2021-11-20 07:02:10,752 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 730 predicate places. [2021-11-20 07:02:10,752 INFO L470 AbstractCegarLoop]: Abstraction has has 917 places, 730 transitions, 15856 flow [2021-11-20 07:02:10,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:10,753 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:02:10,753 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] [2021-11-20 07:02:10,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2021-11-20 07:02:10,753 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:02:10,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:10,753 INFO L85 PathProgramCache]: Analyzing trace with hash -294510050, now seen corresponding path program 84 times [2021-11-20 07:02:10,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:10,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258627155] [2021-11-20 07:02:10,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:10,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:10,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:10,918 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:10,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258627155] [2021-11-20 07:02:10,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258627155] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:10,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:10,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:02:10,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954277173] [2021-11-20 07:02:10,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:10,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:02:10,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:10,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:02:10,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:02:10,921 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:02:10,923 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 917 places, 730 transitions, 15856 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:10,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:02:10,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:02:10,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:02:13,918 INFO L129 PetriNetUnfolder]: 854/3175 cut-off events. [2021-11-20 07:02:13,918 INFO L130 PetriNetUnfolder]: For 105411/105451 co-relation queries the response was YES. [2021-11-20 07:02:14,011 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27040 conditions, 3175 events. 854/3175 cut-off events. For 105411/105451 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 26821 event pairs, 366 based on Foata normal form. 5/3077 useless extension candidates. Maximal degree in co-relation 26658. Up to 1047 conditions per place. [2021-11-20 07:02:14,028 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 382 selfloop transitions, 216 changer transitions 71/827 dead transitions. [2021-11-20 07:02:14,028 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 929 places, 827 transitions, 19733 flow [2021-11-20 07:02:14,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 07:02:14,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-20 07:02:14,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5925 transitions. [2021-11-20 07:02:14,031 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7625482625482626 [2021-11-20 07:02:14,031 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5925 transitions. [2021-11-20 07:02:14,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5925 transitions. [2021-11-20 07:02:14,032 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:02:14,032 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5925 transitions. [2021-11-20 07:02:14,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.13513513513513) internal successors, (5925), 37 states have internal predecessors, (5925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:14,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:14,040 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:14,040 INFO L186 Difference]: Start difference. First operand has 917 places, 730 transitions, 15856 flow. Second operand 37 states and 5925 transitions. [2021-11-20 07:02:14,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 929 places, 827 transitions, 19733 flow [2021-11-20 07:02:15,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 909 places, 827 transitions, 19283 flow, removed 128 selfloop flow, removed 20 redundant places. [2021-11-20 07:02:15,310 INFO L242 Difference]: Finished difference. Result has 933 places, 734 transitions, 16218 flow [2021-11-20 07:02:15,311 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15536, PETRI_DIFFERENCE_MINUEND_PLACES=873, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=515, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=16218, PETRI_PLACES=933, PETRI_TRANSITIONS=734} [2021-11-20 07:02:15,312 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 746 predicate places. [2021-11-20 07:02:15,312 INFO L470 AbstractCegarLoop]: Abstraction has has 933 places, 734 transitions, 16218 flow [2021-11-20 07:02:15,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:15,312 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:02:15,313 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] [2021-11-20 07:02:15,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2021-11-20 07:02:15,313 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:02:15,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:15,313 INFO L85 PathProgramCache]: Analyzing trace with hash 957700574, now seen corresponding path program 85 times [2021-11-20 07:02:15,314 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:15,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155960275] [2021-11-20 07:02:15,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:15,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:15,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:15,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:15,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:15,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155960275] [2021-11-20 07:02:15,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155960275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:15,480 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:15,480 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:02:15,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301595338] [2021-11-20 07:02:15,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:15,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:02:15,480 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:15,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:02:15,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:02:15,483 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:02:15,484 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 933 places, 734 transitions, 16218 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:15,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:02:15,485 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:02:15,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:02:18,403 INFO L129 PetriNetUnfolder]: 848/3163 cut-off events. [2021-11-20 07:02:18,403 INFO L130 PetriNetUnfolder]: For 105010/105051 co-relation queries the response was YES. [2021-11-20 07:02:18,528 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27044 conditions, 3163 events. 848/3163 cut-off events. For 105010/105051 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 26710 event pairs, 358 based on Foata normal form. 5/3070 useless extension candidates. Maximal degree in co-relation 26655. Up to 1043 conditions per place. [2021-11-20 07:02:18,546 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 423 selfloop transitions, 181 changer transitions 76/838 dead transitions. [2021-11-20 07:02:18,546 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 945 places, 838 transitions, 20329 flow [2021-11-20 07:02:18,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 07:02:18,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-11-20 07:02:18,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5770 transitions. [2021-11-20 07:02:18,549 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7632275132275133 [2021-11-20 07:02:18,549 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5770 transitions. [2021-11-20 07:02:18,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5770 transitions. [2021-11-20 07:02:18,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:02:18,551 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5770 transitions. [2021-11-20 07:02:18,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.27777777777777) internal successors, (5770), 36 states have internal predecessors, (5770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:18,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:18,559 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:18,559 INFO L186 Difference]: Start difference. First operand has 933 places, 734 transitions, 16218 flow. Second operand 36 states and 5770 transitions. [2021-11-20 07:02:18,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 945 places, 838 transitions, 20329 flow [2021-11-20 07:02:19,874 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 922 places, 838 transitions, 19884 flow, removed 100 selfloop flow, removed 23 redundant places. [2021-11-20 07:02:19,890 INFO L242 Difference]: Finished difference. Result has 945 places, 740 transitions, 16511 flow [2021-11-20 07:02:19,890 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15841, PETRI_DIFFERENCE_MINUEND_PLACES=887, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=734, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=172, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=557, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=16511, PETRI_PLACES=945, PETRI_TRANSITIONS=740} [2021-11-20 07:02:19,891 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 758 predicate places. [2021-11-20 07:02:19,891 INFO L470 AbstractCegarLoop]: Abstraction has has 945 places, 740 transitions, 16511 flow [2021-11-20 07:02:19,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:19,891 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:02:19,891 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] [2021-11-20 07:02:19,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2021-11-20 07:02:19,891 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:02:19,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:19,892 INFO L85 PathProgramCache]: Analyzing trace with hash 515749322, now seen corresponding path program 86 times [2021-11-20 07:02:19,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:19,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074656512] [2021-11-20 07:02:19,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:19,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:20,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:20,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:20,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074656512] [2021-11-20 07:02:20,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074656512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:20,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:20,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:02:20,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079448296] [2021-11-20 07:02:20,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:20,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:02:20,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:20,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:02:20,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:02:20,016 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:02:20,018 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 945 places, 740 transitions, 16511 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:20,018 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:02:20,018 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:02:20,018 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:02:22,539 INFO L129 PetriNetUnfolder]: 852/3204 cut-off events. [2021-11-20 07:02:22,539 INFO L130 PetriNetUnfolder]: For 105287/105328 co-relation queries the response was YES. [2021-11-20 07:02:22,658 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27251 conditions, 3204 events. 852/3204 cut-off events. For 105287/105328 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 27245 event pairs, 343 based on Foata normal form. 5/3112 useless extension candidates. Maximal degree in co-relation 26858. Up to 1056 conditions per place. [2021-11-20 07:02:22,674 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 417 selfloop transitions, 204 changer transitions 79/858 dead transitions. [2021-11-20 07:02:22,675 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 957 places, 858 transitions, 20986 flow [2021-11-20 07:02:22,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-20 07:02:22,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-11-20 07:02:22,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5606 transitions. [2021-11-20 07:02:22,677 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7627210884353741 [2021-11-20 07:02:22,677 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5606 transitions. [2021-11-20 07:02:22,678 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5606 transitions. [2021-11-20 07:02:22,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:02:22,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5606 transitions. [2021-11-20 07:02:22,682 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 160.17142857142858) internal successors, (5606), 35 states have internal predecessors, (5606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:22,685 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:22,685 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 210.0) internal successors, (7560), 36 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:22,686 INFO L186 Difference]: Start difference. First operand has 945 places, 740 transitions, 16511 flow. Second operand 35 states and 5606 transitions. [2021-11-20 07:02:22,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 957 places, 858 transitions, 20986 flow [2021-11-20 07:02:23,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 927 places, 858 transitions, 20384 flow, removed 118 selfloop flow, removed 30 redundant places. [2021-11-20 07:02:23,986 INFO L242 Difference]: Finished difference. Result has 949 places, 753 transitions, 16870 flow [2021-11-20 07:02:23,986 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15970, PETRI_DIFFERENCE_MINUEND_PLACES=893, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=740, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=189, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=546, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=16870, PETRI_PLACES=949, PETRI_TRANSITIONS=753} [2021-11-20 07:02:23,986 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 762 predicate places. [2021-11-20 07:02:23,987 INFO L470 AbstractCegarLoop]: Abstraction has has 949 places, 753 transitions, 16870 flow [2021-11-20 07:02:23,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:23,987 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:02:23,987 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] [2021-11-20 07:02:23,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2021-11-20 07:02:23,987 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:02:23,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:23,987 INFO L85 PathProgramCache]: Analyzing trace with hash 215788368, now seen corresponding path program 87 times [2021-11-20 07:02:23,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:23,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860567185] [2021-11-20 07:02:23,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:23,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:24,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:24,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:24,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860567185] [2021-11-20 07:02:24,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860567185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:24,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:24,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:02:24,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670129839] [2021-11-20 07:02:24,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:24,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:02:24,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:24,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:02:24,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:02:24,161 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:02:24,163 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 949 places, 753 transitions, 16870 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:24,163 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:02:24,164 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:02:24,164 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:02:27,532 INFO L129 PetriNetUnfolder]: 876/3289 cut-off events. [2021-11-20 07:02:27,532 INFO L130 PetriNetUnfolder]: For 109460/109479 co-relation queries the response was YES. [2021-11-20 07:02:27,635 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28233 conditions, 3289 events. 876/3289 cut-off events. For 109460/109479 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 28141 event pairs, 340 based on Foata normal form. 3/3198 useless extension candidates. Maximal degree in co-relation 27843. Up to 1070 conditions per place. [2021-11-20 07:02:27,653 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 463 selfloop transitions, 191 changer transitions 75/887 dead transitions. [2021-11-20 07:02:27,653 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 965 places, 887 transitions, 21991 flow [2021-11-20 07:02:27,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-11-20 07:02:27,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-11-20 07:02:27,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 6083 transitions. [2021-11-20 07:02:27,657 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.762280701754386 [2021-11-20 07:02:27,657 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 6083 transitions. [2021-11-20 07:02:27,657 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 6083 transitions. [2021-11-20 07:02:27,658 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:02:27,658 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 6083 transitions. [2021-11-20 07:02:27,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 160.07894736842104) internal successors, (6083), 38 states have internal predecessors, (6083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:27,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:27,667 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 210.0) internal successors, (8190), 39 states have internal predecessors, (8190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:27,667 INFO L186 Difference]: Start difference. First operand has 949 places, 753 transitions, 16870 flow. Second operand 38 states and 6083 transitions. [2021-11-20 07:02:27,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 965 places, 887 transitions, 21991 flow [2021-11-20 07:02:28,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 940 places, 887 transitions, 21227 flow, removed 143 selfloop flow, removed 25 redundant places. [2021-11-20 07:02:28,979 INFO L242 Difference]: Finished difference. Result has 963 places, 773 transitions, 17432 flow [2021-11-20 07:02:28,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16240, PETRI_DIFFERENCE_MINUEND_PLACES=903, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=753, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=173, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=574, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=17432, PETRI_PLACES=963, PETRI_TRANSITIONS=773} [2021-11-20 07:02:28,979 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 776 predicate places. [2021-11-20 07:02:28,979 INFO L470 AbstractCegarLoop]: Abstraction has has 963 places, 773 transitions, 17432 flow [2021-11-20 07:02:28,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:28,980 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:02:28,980 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] [2021-11-20 07:02:28,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2021-11-20 07:02:28,980 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:02:28,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:28,980 INFO L85 PathProgramCache]: Analyzing trace with hash -736992154, now seen corresponding path program 88 times [2021-11-20 07:02:28,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:28,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339252008] [2021-11-20 07:02:28,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:28,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:29,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:29,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:29,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339252008] [2021-11-20 07:02:29,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339252008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:29,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:29,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:02:29,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860323255] [2021-11-20 07:02:29,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:29,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:02:29,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:29,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:02:29,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:02:29,111 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:02:29,112 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 963 places, 773 transitions, 17432 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:29,112 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:02:29,112 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:02:29,112 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:02:31,920 INFO L129 PetriNetUnfolder]: 881/3294 cut-off events. [2021-11-20 07:02:31,920 INFO L130 PetriNetUnfolder]: For 105869/105888 co-relation queries the response was YES. [2021-11-20 07:02:32,054 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28204 conditions, 3294 events. 881/3294 cut-off events. For 105869/105888 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 28240 event pairs, 362 based on Foata normal form. 3/3189 useless extension candidates. Maximal degree in co-relation 27810. Up to 1082 conditions per place. [2021-11-20 07:02:32,072 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 453 selfloop transitions, 197 changer transitions 70/878 dead transitions. [2021-11-20 07:02:32,072 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 975 places, 878 transitions, 21822 flow [2021-11-20 07:02:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-11-20 07:02:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-11-20 07:02:32,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 5929 transitions. [2021-11-20 07:02:32,076 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763063063063063 [2021-11-20 07:02:32,076 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 5929 transitions. [2021-11-20 07:02:32,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 5929 transitions. [2021-11-20 07:02:32,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:02:32,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 5929 transitions. [2021-11-20 07:02:32,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 160.24324324324326) internal successors, (5929), 37 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:32,084 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:32,085 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 210.0) internal successors, (7980), 38 states have internal predecessors, (7980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:32,085 INFO L186 Difference]: Start difference. First operand has 963 places, 773 transitions, 17432 flow. Second operand 37 states and 5929 transitions. [2021-11-20 07:02:32,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 975 places, 878 transitions, 21822 flow [2021-11-20 07:02:33,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 955 places, 878 transitions, 21396 flow, removed 115 selfloop flow, removed 20 redundant places. [2021-11-20 07:02:33,479 INFO L242 Difference]: Finished difference. Result has 979 places, 786 transitions, 18110 flow [2021-11-20 07:02:33,479 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17118, PETRI_DIFFERENCE_MINUEND_PLACES=919, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=183, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=583, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=18110, PETRI_PLACES=979, PETRI_TRANSITIONS=786} [2021-11-20 07:02:33,480 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 792 predicate places. [2021-11-20 07:02:33,480 INFO L470 AbstractCegarLoop]: Abstraction has has 979 places, 786 transitions, 18110 flow [2021-11-20 07:02:33,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:33,480 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:02:33,480 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] [2021-11-20 07:02:33,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2021-11-20 07:02:33,481 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:02:33,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:33,481 INFO L85 PathProgramCache]: Analyzing trace with hash 82472542, now seen corresponding path program 89 times [2021-11-20 07:02:33,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:33,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348162849] [2021-11-20 07:02:33,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:33,481 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:33,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:33,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:33,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:33,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348162849] [2021-11-20 07:02:33,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348162849] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:33,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:33,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:02:33,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122974723] [2021-11-20 07:02:33,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:33,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:02:33,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:33,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:02:33,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:02:33,624 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:02:33,625 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 979 places, 786 transitions, 18110 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:33,625 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:02:33,625 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:02:33,625 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:02:36,435 INFO L129 PetriNetUnfolder]: 875/3304 cut-off events. [2021-11-20 07:02:36,435 INFO L130 PetriNetUnfolder]: For 107457/107476 co-relation queries the response was YES. [2021-11-20 07:02:36,579 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28315 conditions, 3304 events. 875/3304 cut-off events. For 107457/107476 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 28406 event pairs, 353 based on Foata normal form. 3/3204 useless extension candidates. Maximal degree in co-relation 27914. Up to 1078 conditions per place. [2021-11-20 07:02:36,598 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 477 selfloop transitions, 178 changer transitions 76/889 dead transitions. [2021-11-20 07:02:36,599 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 991 places, 889 transitions, 22411 flow [2021-11-20 07:02:36,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2021-11-20 07:02:36,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2021-11-20 07:02:36,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 5774 transitions. [2021-11-20 07:02:36,602 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7637566137566137 [2021-11-20 07:02:36,602 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 5774 transitions. [2021-11-20 07:02:36,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 5774 transitions. [2021-11-20 07:02:36,603 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:02:36,603 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 5774 transitions. [2021-11-20 07:02:36,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 160.38888888888889) internal successors, (5774), 36 states have internal predecessors, (5774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:36,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:36,612 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 210.0) internal successors, (7770), 37 states have internal predecessors, (7770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:36,612 INFO L186 Difference]: Start difference. First operand has 979 places, 786 transitions, 18110 flow. Second operand 36 states and 5774 transitions. [2021-11-20 07:02:36,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 991 places, 889 transitions, 22411 flow [2021-11-20 07:02:38,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 969 places, 889 transitions, 21885 flow, removed 134 selfloop flow, removed 22 redundant places. [2021-11-20 07:02:38,037 INFO L242 Difference]: Finished difference. Result has 991 places, 791 transitions, 18318 flow [2021-11-20 07:02:38,037 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17690, PETRI_DIFFERENCE_MINUEND_PLACES=934, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=170, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=18318, PETRI_PLACES=991, PETRI_TRANSITIONS=791} [2021-11-20 07:02:38,038 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 804 predicate places. [2021-11-20 07:02:38,038 INFO L470 AbstractCegarLoop]: Abstraction has has 991 places, 791 transitions, 18318 flow [2021-11-20 07:02:38,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:38,039 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:02:38,039 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] [2021-11-20 07:02:38,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2021-11-20 07:02:38,039 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:02:38,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:38,040 INFO L85 PathProgramCache]: Analyzing trace with hash 1310976358, now seen corresponding path program 90 times [2021-11-20 07:02:38,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:38,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114558517] [2021-11-20 07:02:38,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:38,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:38,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:38,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:38,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:38,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114558517] [2021-11-20 07:02:38,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114558517] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:38,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:38,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:02:38,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565123204] [2021-11-20 07:02:38,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:38,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:02:38,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:38,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:02:38,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:02:38,179 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:02:38,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 991 places, 791 transitions, 18318 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:38,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:02:38,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:02:38,181 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:02:41,311 INFO L129 PetriNetUnfolder]: 875/3356 cut-off events. [2021-11-20 07:02:41,311 INFO L130 PetriNetUnfolder]: For 111254/111273 co-relation queries the response was YES. [2021-11-20 07:02:41,431 INFO L84 FinitePrefix]: Finished finitePrefix Result has 28636 conditions, 3356 events. 875/3356 cut-off events. For 111254/111273 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 28975 event pairs, 322 based on Foata normal form. 3/3275 useless extension candidates. Maximal degree in co-relation 28231. Up to 1098 conditions per place. [2021-11-20 07:02:41,449 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 438 selfloop transitions, 235 changer transitions 69/900 dead transitions. [2021-11-20 07:02:41,449 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 998 places, 900 transitions, 22678 flow [2021-11-20 07:02:41,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:02:41,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:02:41,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4815 transitions. [2021-11-20 07:02:41,452 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642857142857142 [2021-11-20 07:02:41,452 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4815 transitions. [2021-11-20 07:02:41,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4815 transitions. [2021-11-20 07:02:41,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:02:41,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4815 transitions. [2021-11-20 07:02:41,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.5) internal successors, (4815), 30 states have internal predecessors, (4815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:41,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:41,460 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:41,460 INFO L186 Difference]: Start difference. First operand has 991 places, 791 transitions, 18318 flow. Second operand 30 states and 4815 transitions. [2021-11-20 07:02:41,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 998 places, 900 transitions, 22678 flow [2021-11-20 07:02:42,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 961 places, 900 transitions, 21894 flow, removed 149 selfloop flow, removed 37 redundant places. [2021-11-20 07:02:42,913 INFO L242 Difference]: Finished difference. Result has 974 places, 797 transitions, 18361 flow [2021-11-20 07:02:42,914 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17646, PETRI_DIFFERENCE_MINUEND_PLACES=932, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=227, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=559, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18361, PETRI_PLACES=974, PETRI_TRANSITIONS=797} [2021-11-20 07:02:42,914 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 787 predicate places. [2021-11-20 07:02:42,914 INFO L470 AbstractCegarLoop]: Abstraction has has 974 places, 797 transitions, 18361 flow [2021-11-20 07:02:42,915 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:42,915 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:02:42,915 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] [2021-11-20 07:02:42,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2021-11-20 07:02:42,915 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:02:42,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:42,916 INFO L85 PathProgramCache]: Analyzing trace with hash 685479956, now seen corresponding path program 91 times [2021-11-20 07:02:42,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:42,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717948653] [2021-11-20 07:02:42,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:42,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:42,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:43,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:43,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:43,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717948653] [2021-11-20 07:02:43,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717948653] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:43,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:43,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:02:43,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806667764] [2021-11-20 07:02:43,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:43,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:02:43,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:43,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:02:43,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:02:43,080 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:02:43,081 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 974 places, 797 transitions, 18361 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:43,081 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:02:43,081 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:02:43,081 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:02:45,674 INFO L129 PetriNetUnfolder]: 865/3255 cut-off events. [2021-11-20 07:02:45,674 INFO L130 PetriNetUnfolder]: For 101765/101784 co-relation queries the response was YES. [2021-11-20 07:02:45,818 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27544 conditions, 3255 events. 865/3255 cut-off events. For 101765/101784 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 27830 event pairs, 354 based on Foata normal form. 3/3149 useless extension candidates. Maximal degree in co-relation 27158. Up to 1089 conditions per place. [2021-11-20 07:02:45,837 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 437 selfloop transitions, 222 changer transitions 60/877 dead transitions. [2021-11-20 07:02:45,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 986 places, 877 transitions, 21931 flow [2021-11-20 07:02:45,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 07:02:45,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-20 07:02:45,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4508 transitions. [2021-11-20 07:02:45,840 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2021-11-20 07:02:45,840 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4508 transitions. [2021-11-20 07:02:45,840 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4508 transitions. [2021-11-20 07:02:45,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:02:45,841 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4508 transitions. [2021-11-20 07:02:45,844 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 161.0) internal successors, (4508), 28 states have internal predecessors, (4508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:45,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:45,847 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:45,848 INFO L186 Difference]: Start difference. First operand has 974 places, 797 transitions, 18361 flow. Second operand 28 states and 4508 transitions. [2021-11-20 07:02:45,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 986 places, 877 transitions, 21931 flow [2021-11-20 07:02:47,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 974 places, 877 transitions, 21551 flow, removed 109 selfloop flow, removed 12 redundant places. [2021-11-20 07:02:47,460 INFO L242 Difference]: Finished difference. Result has 986 places, 805 transitions, 18789 flow [2021-11-20 07:02:47,461 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18028, PETRI_DIFFERENCE_MINUEND_PLACES=947, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=797, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=212, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=580, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=18789, PETRI_PLACES=986, PETRI_TRANSITIONS=805} [2021-11-20 07:02:47,461 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 799 predicate places. [2021-11-20 07:02:47,461 INFO L470 AbstractCegarLoop]: Abstraction has has 986 places, 805 transitions, 18789 flow [2021-11-20 07:02:47,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:47,462 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:02:47,462 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] [2021-11-20 07:02:47,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2021-11-20 07:02:47,462 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:02:47,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:47,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1864683516, now seen corresponding path program 92 times [2021-11-20 07:02:47,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:47,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418911959] [2021-11-20 07:02:47,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:47,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:47,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:47,600 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:47,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418911959] [2021-11-20 07:02:47,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418911959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:47,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:47,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:02:47,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612658874] [2021-11-20 07:02:47,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:47,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:02:47,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:47,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:02:47,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:02:47,603 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:02:47,604 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 986 places, 805 transitions, 18789 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:47,604 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:02:47,605 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:02:47,605 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:02:50,741 INFO L129 PetriNetUnfolder]: 860/3243 cut-off events. [2021-11-20 07:02:50,741 INFO L130 PetriNetUnfolder]: For 103381/103422 co-relation queries the response was YES. [2021-11-20 07:02:51,068 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27546 conditions, 3243 events. 860/3243 cut-off events. For 103381/103422 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 27735 event pairs, 354 based on Foata normal form. 5/3142 useless extension candidates. Maximal degree in co-relation 27157. Up to 1089 conditions per place. [2021-11-20 07:02:51,084 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 446 selfloop transitions, 218 changer transitions 59/881 dead transitions. [2021-11-20 07:02:51,085 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1002 places, 881 transitions, 22239 flow [2021-11-20 07:02:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:02:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:02:51,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4821 transitions. [2021-11-20 07:02:51,087 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7652380952380953 [2021-11-20 07:02:51,087 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4821 transitions. [2021-11-20 07:02:51,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4821 transitions. [2021-11-20 07:02:51,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:02:51,088 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4821 transitions. [2021-11-20 07:02:51,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.7) internal successors, (4821), 30 states have internal predecessors, (4821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:51,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:51,095 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:51,095 INFO L186 Difference]: Start difference. First operand has 986 places, 805 transitions, 18789 flow. Second operand 30 states and 4821 transitions. [2021-11-20 07:02:51,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1002 places, 881 transitions, 22239 flow [2021-11-20 07:02:52,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 986 places, 881 transitions, 21722 flow, removed 72 selfloop flow, removed 16 redundant places. [2021-11-20 07:02:52,408 INFO L242 Difference]: Finished difference. Result has 1000 places, 810 transitions, 18977 flow [2021-11-20 07:02:52,409 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18316, PETRI_DIFFERENCE_MINUEND_PLACES=957, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18977, PETRI_PLACES=1000, PETRI_TRANSITIONS=810} [2021-11-20 07:02:52,409 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 813 predicate places. [2021-11-20 07:02:52,410 INFO L470 AbstractCegarLoop]: Abstraction has has 1000 places, 810 transitions, 18977 flow [2021-11-20 07:02:52,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:52,410 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:02:52,410 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] [2021-11-20 07:02:52,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2021-11-20 07:02:52,411 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:02:52,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:52,411 INFO L85 PathProgramCache]: Analyzing trace with hash 339663270, now seen corresponding path program 93 times [2021-11-20 07:02:52,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:52,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518451411] [2021-11-20 07:02:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:52,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:52,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:52,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:52,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518451411] [2021-11-20 07:02:52,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518451411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:52,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:52,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:02:52,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665772738] [2021-11-20 07:02:52,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:52,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:02:52,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:02:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:02:52,559 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:02:52,561 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1000 places, 810 transitions, 18977 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:52,561 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:02:52,561 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:02:52,561 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:02:55,376 INFO L129 PetriNetUnfolder]: 845/3175 cut-off events. [2021-11-20 07:02:55,376 INFO L130 PetriNetUnfolder]: For 101406/101446 co-relation queries the response was YES. [2021-11-20 07:02:55,561 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26828 conditions, 3175 events. 845/3175 cut-off events. For 101406/101446 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 26928 event pairs, 350 based on Foata normal form. 5/3071 useless extension candidates. Maximal degree in co-relation 26435. Up to 1089 conditions per place. [2021-11-20 07:02:55,580 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 440 selfloop transitions, 198 changer transitions 64/860 dead transitions. [2021-11-20 07:02:55,581 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1012 places, 860 transitions, 21519 flow [2021-11-20 07:02:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 07:02:55,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-20 07:02:55,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4501 transitions. [2021-11-20 07:02:55,584 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7654761904761904 [2021-11-20 07:02:55,584 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4501 transitions. [2021-11-20 07:02:55,584 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4501 transitions. [2021-11-20 07:02:55,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:02:55,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4501 transitions. [2021-11-20 07:02:55,589 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.75) internal successors, (4501), 28 states have internal predecessors, (4501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:55,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:55,593 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:55,594 INFO L186 Difference]: Start difference. First operand has 1000 places, 810 transitions, 18977 flow. Second operand 28 states and 4501 transitions. [2021-11-20 07:02:55,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1012 places, 860 transitions, 21519 flow [2021-11-20 07:02:56,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1000 places, 860 transitions, 21127 flow, removed 89 selfloop flow, removed 12 redundant places. [2021-11-20 07:02:56,966 INFO L242 Difference]: Finished difference. Result has 1009 places, 785 transitions, 18249 flow [2021-11-20 07:02:56,966 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=18616, PETRI_DIFFERENCE_MINUEND_PLACES=973, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=810, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=612, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=18249, PETRI_PLACES=1009, PETRI_TRANSITIONS=785} [2021-11-20 07:02:56,967 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 822 predicate places. [2021-11-20 07:02:56,967 INFO L470 AbstractCegarLoop]: Abstraction has has 1009 places, 785 transitions, 18249 flow [2021-11-20 07:02:56,967 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:56,967 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:02:56,967 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] [2021-11-20 07:02:56,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2021-11-20 07:02:56,967 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:02:56,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:02:56,968 INFO L85 PathProgramCache]: Analyzing trace with hash 896433294, now seen corresponding path program 94 times [2021-11-20 07:02:56,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:02:56,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361156642] [2021-11-20 07:02:56,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:02:56,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:02:56,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:02:57,101 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:02:57,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:02:57,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361156642] [2021-11-20 07:02:57,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361156642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:02:57,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:02:57,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:02:57,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854967340] [2021-11-20 07:02:57,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:02:57,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:02:57,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:02:57,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:02:57,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:02:57,106 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:02:57,108 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1009 places, 785 transitions, 18249 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:02:57,108 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:02:57,108 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:02:57,108 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:03:00,173 INFO L129 PetriNetUnfolder]: 849/3239 cut-off events. [2021-11-20 07:03:00,173 INFO L130 PetriNetUnfolder]: For 106987/107028 co-relation queries the response was YES. [2021-11-20 07:03:00,270 INFO L84 FinitePrefix]: Finished finitePrefix Result has 27360 conditions, 3239 events. 849/3239 cut-off events. For 106987/107028 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 27722 event pairs, 311 based on Foata normal form. 5/3158 useless extension candidates. Maximal degree in co-relation 26966. Up to 1090 conditions per place. [2021-11-20 07:03:00,286 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 427 selfloop transitions, 237 changer transitions 68/890 dead transitions. [2021-11-20 07:03:00,287 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1005 places, 890 transitions, 22419 flow [2021-11-20 07:03:00,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:03:00,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:03:00,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4817 transitions. [2021-11-20 07:03:00,289 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7646031746031746 [2021-11-20 07:03:00,289 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4817 transitions. [2021-11-20 07:03:00,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4817 transitions. [2021-11-20 07:03:00,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:03:00,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4817 transitions. [2021-11-20 07:03:00,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.56666666666666) internal successors, (4817), 30 states have internal predecessors, (4817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:00,296 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:00,296 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:00,297 INFO L186 Difference]: Start difference. First operand has 1009 places, 785 transitions, 18249 flow. Second operand 30 states and 4817 transitions. [2021-11-20 07:03:00,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1005 places, 890 transitions, 22419 flow [2021-11-20 07:03:01,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 971 places, 890 transitions, 21433 flow, removed 33 selfloop flow, removed 34 redundant places. [2021-11-20 07:03:01,717 INFO L242 Difference]: Finished difference. Result has 984 places, 791 transitions, 18069 flow [2021-11-20 07:03:01,718 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17367, PETRI_DIFFERENCE_MINUEND_PLACES=942, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=785, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=229, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=18069, PETRI_PLACES=984, PETRI_TRANSITIONS=791} [2021-11-20 07:03:01,718 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 797 predicate places. [2021-11-20 07:03:01,718 INFO L470 AbstractCegarLoop]: Abstraction has has 984 places, 791 transitions, 18069 flow [2021-11-20 07:03:01,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:01,718 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:03:01,719 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] [2021-11-20 07:03:01,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2021-11-20 07:03:01,719 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:03:01,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:01,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1931358304, now seen corresponding path program 95 times [2021-11-20 07:03:01,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:03:01,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583342759] [2021-11-20 07:03:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:03:01,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:03:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:01,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:03:01,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:03:01,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583342759] [2021-11-20 07:03:01,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583342759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:03:01,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:03:01,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:03:01,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092334767] [2021-11-20 07:03:01,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:03:01,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:03:01,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:03:01,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:03:01,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:03:01,849 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:03:01,850 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 984 places, 791 transitions, 18069 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:01,850 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:03:01,850 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:03:01,850 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:03:04,733 INFO L129 PetriNetUnfolder]: 826/3206 cut-off events. [2021-11-20 07:03:04,733 INFO L130 PetriNetUnfolder]: For 101333/101352 co-relation queries the response was YES. [2021-11-20 07:03:04,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26545 conditions, 3206 events. 826/3206 cut-off events. For 101333/101352 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 27421 event pairs, 314 based on Foata normal form. 3/3125 useless extension candidates. Maximal degree in co-relation 26158. Up to 1092 conditions per place. [2021-11-20 07:03:04,843 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 419 selfloop transitions, 206 changer transitions 74/857 dead transitions. [2021-11-20 07:03:04,843 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 995 places, 857 transitions, 20909 flow [2021-11-20 07:03:04,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-20 07:03:04,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-11-20 07:03:04,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4336 transitions. [2021-11-20 07:03:04,846 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7647266313932981 [2021-11-20 07:03:04,846 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 4336 transitions. [2021-11-20 07:03:04,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 4336 transitions. [2021-11-20 07:03:04,847 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:03:04,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 4336 transitions. [2021-11-20 07:03:04,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 160.59259259259258) internal successors, (4336), 27 states have internal predecessors, (4336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:04,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:04,853 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 210.0) internal successors, (5880), 28 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:04,853 INFO L186 Difference]: Start difference. First operand has 984 places, 791 transitions, 18069 flow. Second operand 27 states and 4336 transitions. [2021-11-20 07:03:04,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 995 places, 857 transitions, 20909 flow [2021-11-20 07:03:06,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 982 places, 857 transitions, 20608 flow, removed 64 selfloop flow, removed 13 redundant places. [2021-11-20 07:03:06,268 INFO L242 Difference]: Finished difference. Result has 989 places, 754 transitions, 17036 flow [2021-11-20 07:03:06,268 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17803, PETRI_DIFFERENCE_MINUEND_PLACES=956, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=206, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=585, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=17036, PETRI_PLACES=989, PETRI_TRANSITIONS=754} [2021-11-20 07:03:06,269 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 802 predicate places. [2021-11-20 07:03:06,269 INFO L470 AbstractCegarLoop]: Abstraction has has 989 places, 754 transitions, 17036 flow [2021-11-20 07:03:06,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:06,269 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:03:06,269 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] [2021-11-20 07:03:06,269 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2021-11-20 07:03:06,269 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:03:06,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:06,270 INFO L85 PathProgramCache]: Analyzing trace with hash 242997852, now seen corresponding path program 96 times [2021-11-20 07:03:06,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:03:06,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566639377] [2021-11-20 07:03:06,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:03:06,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:03:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:03:06,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:03:06,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566639377] [2021-11-20 07:03:06,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566639377] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:03:06,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:03:06,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:03:06,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835805983] [2021-11-20 07:03:06,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:03:06,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:03:06,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:03:06,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:03:06,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:03:06,412 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:03:06,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 989 places, 754 transitions, 17036 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:06,413 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:03:06,413 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:03:06,413 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:03:09,328 INFO L129 PetriNetUnfolder]: 822/3153 cut-off events. [2021-11-20 07:03:09,328 INFO L130 PetriNetUnfolder]: For 100654/100695 co-relation queries the response was YES. [2021-11-20 07:03:09,422 INFO L84 FinitePrefix]: Finished finitePrefix Result has 26324 conditions, 3153 events. 822/3153 cut-off events. For 100654/100695 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 26808 event pairs, 327 based on Foata normal form. 5/3064 useless extension candidates. Maximal degree in co-relation 25940. Up to 1088 conditions per place. [2021-11-20 07:03:09,437 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 450 selfloop transitions, 173 changer transitions 64/845 dead transitions. [2021-11-20 07:03:09,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 975 places, 845 transitions, 20880 flow [2021-11-20 07:03:09,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-20 07:03:09,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2021-11-20 07:03:09,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 4506 transitions. [2021-11-20 07:03:09,439 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7663265306122449 [2021-11-20 07:03:09,439 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 4506 transitions. [2021-11-20 07:03:09,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 4506 transitions. [2021-11-20 07:03:09,440 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:03:09,440 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 4506 transitions. [2021-11-20 07:03:09,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 160.92857142857142) internal successors, (4506), 28 states have internal predecessors, (4506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:09,445 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:09,446 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 210.0) internal successors, (6090), 29 states have internal predecessors, (6090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:09,446 INFO L186 Difference]: Start difference. First operand has 989 places, 754 transitions, 17036 flow. Second operand 28 states and 4506 transitions. [2021-11-20 07:03:09,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 975 places, 845 transitions, 20880 flow [2021-11-20 07:03:10,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 939 places, 845 transitions, 19256 flow, removed 33 selfloop flow, removed 36 redundant places. [2021-11-20 07:03:10,604 INFO L242 Difference]: Finished difference. Result has 951 places, 762 transitions, 16290 flow [2021-11-20 07:03:10,605 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15651, PETRI_DIFFERENCE_MINUEND_PLACES=912, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=754, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=586, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=16290, PETRI_PLACES=951, PETRI_TRANSITIONS=762} [2021-11-20 07:03:10,605 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 764 predicate places. [2021-11-20 07:03:10,605 INFO L470 AbstractCegarLoop]: Abstraction has has 951 places, 762 transitions, 16290 flow [2021-11-20 07:03:10,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:10,605 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:03:10,605 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] [2021-11-20 07:03:10,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2021-11-20 07:03:10,605 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:03:10,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1006957926, now seen corresponding path program 97 times [2021-11-20 07:03:10,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:03:10,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173591495] [2021-11-20 07:03:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:03:10,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:03:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:10,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:03:10,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:03:10,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173591495] [2021-11-20 07:03:10,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173591495] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:03:10,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:03:10,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:03:10,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340827775] [2021-11-20 07:03:10,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:03:10,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:03:10,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:03:10,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:03:10,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:03:10,734 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:03:10,864 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 951 places, 762 transitions, 16290 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:10,864 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:03:10,864 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:03:10,864 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:03:13,698 INFO L129 PetriNetUnfolder]: 826/3161 cut-off events. [2021-11-20 07:03:13,698 INFO L130 PetriNetUnfolder]: For 91604/91623 co-relation queries the response was YES. [2021-11-20 07:03:13,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25498 conditions, 3161 events. 826/3161 cut-off events. For 91604/91623 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 26834 event pairs, 339 based on Foata normal form. 3/3064 useless extension candidates. Maximal degree in co-relation 25121. Up to 1088 conditions per place. [2021-11-20 07:03:13,804 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 452 selfloop transitions, 176 changer transitions 61/847 dead transitions. [2021-11-20 07:03:13,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 966 places, 847 transitions, 19842 flow [2021-11-20 07:03:13,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 07:03:13,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-11-20 07:03:13,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4667 transitions. [2021-11-20 07:03:13,807 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7663382594417077 [2021-11-20 07:03:13,807 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4667 transitions. [2021-11-20 07:03:13,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4667 transitions. [2021-11-20 07:03:13,808 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:03:13,808 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4667 transitions. [2021-11-20 07:03:13,811 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.93103448275863) internal successors, (4667), 29 states have internal predecessors, (4667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:13,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:13,815 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:13,815 INFO L186 Difference]: Start difference. First operand has 951 places, 762 transitions, 16290 flow. Second operand 29 states and 4667 transitions. [2021-11-20 07:03:13,815 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 966 places, 847 transitions, 19842 flow [2021-11-20 07:03:15,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 951 places, 847 transitions, 19389 flow, removed 65 selfloop flow, removed 15 redundant places. [2021-11-20 07:03:15,065 INFO L242 Difference]: Finished difference. Result has 965 places, 774 transitions, 16685 flow [2021-11-20 07:03:15,066 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15909, PETRI_DIFFERENCE_MINUEND_PLACES=923, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=164, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=592, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=16685, PETRI_PLACES=965, PETRI_TRANSITIONS=774} [2021-11-20 07:03:15,066 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 778 predicate places. [2021-11-20 07:03:15,066 INFO L470 AbstractCegarLoop]: Abstraction has has 965 places, 774 transitions, 16685 flow [2021-11-20 07:03:15,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:15,067 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:03:15,067 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] [2021-11-20 07:03:15,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2021-11-20 07:03:15,068 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:03:15,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:15,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1736293236, now seen corresponding path program 98 times [2021-11-20 07:03:15,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:03:15,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240672322] [2021-11-20 07:03:15,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:03:15,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:03:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:15,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:03:15,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:03:15,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240672322] [2021-11-20 07:03:15,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240672322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:03:15,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:03:15,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:03:15,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540750466] [2021-11-20 07:03:15,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:03:15,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:03:15,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:03:15,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:03:15,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:03:15,236 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:03:15,237 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 965 places, 774 transitions, 16685 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:15,237 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:03:15,237 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:03:15,237 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:03:18,166 INFO L129 PetriNetUnfolder]: 835/3148 cut-off events. [2021-11-20 07:03:18,166 INFO L130 PetriNetUnfolder]: For 92564/92605 co-relation queries the response was YES. [2021-11-20 07:03:18,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25637 conditions, 3148 events. 835/3148 cut-off events. For 92564/92605 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 26646 event pairs, 337 based on Foata normal form. 5/3052 useless extension candidates. Maximal degree in co-relation 25255. Up to 1092 conditions per place. [2021-11-20 07:03:18,282 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 431 selfloop transitions, 209 changer transitions 59/857 dead transitions. [2021-11-20 07:03:18,282 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 980 places, 857 transitions, 20147 flow [2021-11-20 07:03:18,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:03:18,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:03:18,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4820 transitions. [2021-11-20 07:03:18,285 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.765079365079365 [2021-11-20 07:03:18,285 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4820 transitions. [2021-11-20 07:03:18,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4820 transitions. [2021-11-20 07:03:18,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:03:18,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4820 transitions. [2021-11-20 07:03:18,288 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.66666666666666) internal successors, (4820), 30 states have internal predecessors, (4820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:18,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:18,292 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:18,292 INFO L186 Difference]: Start difference. First operand has 965 places, 774 transitions, 16685 flow. Second operand 30 states and 4820 transitions. [2021-11-20 07:03:18,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 980 places, 857 transitions, 20147 flow [2021-11-20 07:03:19,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 967 places, 857 transitions, 19816 flow, removed 50 selfloop flow, removed 13 redundant places. [2021-11-20 07:03:19,529 INFO L242 Difference]: Finished difference. Result has 981 places, 786 transitions, 17231 flow [2021-11-20 07:03:19,529 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16393, PETRI_DIFFERENCE_MINUEND_PLACES=938, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=774, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=570, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=17231, PETRI_PLACES=981, PETRI_TRANSITIONS=786} [2021-11-20 07:03:19,530 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 794 predicate places. [2021-11-20 07:03:19,530 INFO L470 AbstractCegarLoop]: Abstraction has has 981 places, 786 transitions, 17231 flow [2021-11-20 07:03:19,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:19,530 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:03:19,530 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] [2021-11-20 07:03:19,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2021-11-20 07:03:19,530 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:03:19,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:19,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1406133838, now seen corresponding path program 99 times [2021-11-20 07:03:19,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:03:19,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708762253] [2021-11-20 07:03:19,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:03:19,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:03:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:19,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:03:19,690 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:03:19,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708762253] [2021-11-20 07:03:19,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708762253] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:03:19,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:03:19,691 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:03:19,691 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556611659] [2021-11-20 07:03:19,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:03:19,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:03:19,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:03:19,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:03:19,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:03:19,694 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:03:19,696 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 981 places, 786 transitions, 17231 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:19,696 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:03:19,696 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:03:19,696 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:03:22,937 INFO L129 PetriNetUnfolder]: 826/3155 cut-off events. [2021-11-20 07:03:22,937 INFO L130 PetriNetUnfolder]: For 94661/94702 co-relation queries the response was YES. [2021-11-20 07:03:23,075 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25707 conditions, 3155 events. 826/3155 cut-off events. For 94661/94702 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 26825 event pairs, 335 based on Foata normal form. 5/3062 useless extension candidates. Maximal degree in co-relation 25319. Up to 1089 conditions per place. [2021-11-20 07:03:23,094 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 426 selfloop transitions, 216 changer transitions 61/861 dead transitions. [2021-11-20 07:03:23,095 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 994 places, 861 transitions, 20508 flow [2021-11-20 07:03:23,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 07:03:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-11-20 07:03:23,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4662 transitions. [2021-11-20 07:03:23,098 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7655172413793103 [2021-11-20 07:03:23,098 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4662 transitions. [2021-11-20 07:03:23,098 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4662 transitions. [2021-11-20 07:03:23,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:03:23,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4662 transitions. [2021-11-20 07:03:23,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 160.75862068965517) internal successors, (4662), 29 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:23,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:23,107 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:23,107 INFO L186 Difference]: Start difference. First operand has 981 places, 786 transitions, 17231 flow. Second operand 29 states and 4662 transitions. [2021-11-20 07:03:23,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 994 places, 861 transitions, 20508 flow [2021-11-20 07:03:24,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 981 places, 861 transitions, 20125 flow, removed 84 selfloop flow, removed 13 redundant places. [2021-11-20 07:03:24,838 INFO L242 Difference]: Finished difference. Result has 995 places, 790 transitions, 17520 flow [2021-11-20 07:03:24,839 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16926, PETRI_DIFFERENCE_MINUEND_PLACES=953, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=786, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=208, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=572, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=17520, PETRI_PLACES=995, PETRI_TRANSITIONS=790} [2021-11-20 07:03:24,839 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 808 predicate places. [2021-11-20 07:03:24,839 INFO L470 AbstractCegarLoop]: Abstraction has has 995 places, 790 transitions, 17520 flow [2021-11-20 07:03:24,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:24,840 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:03:24,840 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] [2021-11-20 07:03:24,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2021-11-20 07:03:24,840 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:03:24,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:24,841 INFO L85 PathProgramCache]: Analyzing trace with hash 994316744, now seen corresponding path program 100 times [2021-11-20 07:03:24,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:03:24,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760410663] [2021-11-20 07:03:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:03:24,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:03:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:03:24,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:03:24,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760410663] [2021-11-20 07:03:24,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760410663] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:03:24,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:03:24,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:03:24,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593313811] [2021-11-20 07:03:24,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:03:24,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:03:24,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:03:24,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:03:24,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:03:24,987 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:03:24,988 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 995 places, 790 transitions, 17520 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:24,988 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:03:24,988 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:03:24,988 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:03:28,305 INFO L129 PetriNetUnfolder]: 802/3059 cut-off events. [2021-11-20 07:03:28,306 INFO L130 PetriNetUnfolder]: For 91359/91400 co-relation queries the response was YES. [2021-11-20 07:03:28,417 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24936 conditions, 3059 events. 802/3059 cut-off events. For 91359/91400 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 25761 event pairs, 330 based on Foata normal form. 5/2966 useless extension candidates. Maximal degree in co-relation 24543. Up to 1075 conditions per place. [2021-11-20 07:03:28,437 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 432 selfloop transitions, 179 changer transitions 66/835 dead transitions. [2021-11-20 07:03:28,437 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1010 places, 835 transitions, 19811 flow [2021-11-20 07:03:28,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:03:28,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:03:28,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4813 transitions. [2021-11-20 07:03:28,441 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.763968253968254 [2021-11-20 07:03:28,442 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4813 transitions. [2021-11-20 07:03:28,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4813 transitions. [2021-11-20 07:03:28,443 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:03:28,443 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4813 transitions. [2021-11-20 07:03:28,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.43333333333334) internal successors, (4813), 30 states have internal predecessors, (4813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:28,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:28,453 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:28,453 INFO L186 Difference]: Start difference. First operand has 995 places, 790 transitions, 17520 flow. Second operand 30 states and 4813 transitions. [2021-11-20 07:03:28,453 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1010 places, 835 transitions, 19811 flow [2021-11-20 07:03:29,883 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 996 places, 835 transitions, 19433 flow, removed 69 selfloop flow, removed 14 redundant places. [2021-11-20 07:03:29,903 INFO L242 Difference]: Finished difference. Result has 1005 places, 760 transitions, 16662 flow [2021-11-20 07:03:29,903 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=17177, PETRI_DIFFERENCE_MINUEND_PLACES=967, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=790, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=179, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=611, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16662, PETRI_PLACES=1005, PETRI_TRANSITIONS=760} [2021-11-20 07:03:29,904 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 818 predicate places. [2021-11-20 07:03:29,904 INFO L470 AbstractCegarLoop]: Abstraction has has 1005 places, 760 transitions, 16662 flow [2021-11-20 07:03:29,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:29,904 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:03:29,904 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] [2021-11-20 07:03:29,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2021-11-20 07:03:29,905 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:03:29,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:29,905 INFO L85 PathProgramCache]: Analyzing trace with hash -336067928, now seen corresponding path program 101 times [2021-11-20 07:03:29,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:03:29,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157872879] [2021-11-20 07:03:29,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:03:29,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:03:29,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:30,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:03:30,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:03:30,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157872879] [2021-11-20 07:03:30,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157872879] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:03:30,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:03:30,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:03:30,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671515208] [2021-11-20 07:03:30,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:03:30,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:03:30,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:03:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:03:30,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:03:30,080 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:03:30,082 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1005 places, 760 transitions, 16662 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:30,082 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:03:30,082 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:03:30,082 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:03:33,630 INFO L129 PetriNetUnfolder]: 811/3103 cut-off events. [2021-11-20 07:03:33,631 INFO L130 PetriNetUnfolder]: For 94010/94029 co-relation queries the response was YES. [2021-11-20 07:03:33,741 INFO L84 FinitePrefix]: Finished finitePrefix Result has 25314 conditions, 3103 events. 811/3103 cut-off events. For 94010/94029 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 26221 event pairs, 328 based on Foata normal form. 3/3011 useless extension candidates. Maximal degree in co-relation 24921. Up to 1083 conditions per place. [2021-11-20 07:03:33,759 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 459 selfloop transitions, 168 changer transitions 60/845 dead transitions. [2021-11-20 07:03:33,759 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 999 places, 845 transitions, 20282 flow [2021-11-20 07:03:33,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-20 07:03:33,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-11-20 07:03:33,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 4824 transitions. [2021-11-20 07:03:33,776 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7657142857142857 [2021-11-20 07:03:33,776 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 4824 transitions. [2021-11-20 07:03:33,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 4824 transitions. [2021-11-20 07:03:33,778 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:03:33,778 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 4824 transitions. [2021-11-20 07:03:33,784 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 160.8) internal successors, (4824), 30 states have internal predecessors, (4824), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:33,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:33,791 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 210.0) internal successors, (6510), 31 states have internal predecessors, (6510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:33,791 INFO L186 Difference]: Start difference. First operand has 1005 places, 760 transitions, 16662 flow. Second operand 30 states and 4824 transitions. [2021-11-20 07:03:33,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 999 places, 845 transitions, 20282 flow [2021-11-20 07:03:35,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 966 places, 845 transitions, 19453 flow, removed 37 selfloop flow, removed 33 redundant places. [2021-11-20 07:03:35,150 INFO L242 Difference]: Finished difference. Result has 979 places, 773 transitions, 16730 flow [2021-11-20 07:03:35,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=15919, PETRI_DIFFERENCE_MINUEND_PLACES=937, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=157, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=16730, PETRI_PLACES=979, PETRI_TRANSITIONS=773} [2021-11-20 07:03:35,151 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 792 predicate places. [2021-11-20 07:03:35,151 INFO L470 AbstractCegarLoop]: Abstraction has has 979 places, 773 transitions, 16730 flow [2021-11-20 07:03:35,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:35,151 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:03:35,151 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] [2021-11-20 07:03:35,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2021-11-20 07:03:35,151 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:03:35,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:35,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1132454924, now seen corresponding path program 102 times [2021-11-20 07:03:35,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:03:35,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507751296] [2021-11-20 07:03:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:03:35,152 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:03:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:35,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:03:35,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:03:35,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507751296] [2021-11-20 07:03:35,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507751296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:03:35,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:03:35,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:03:35,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325907493] [2021-11-20 07:03:35,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:03:35,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:03:35,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:03:35,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:03:35,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:03:35,291 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:03:35,292 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 979 places, 773 transitions, 16730 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:35,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:03:35,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:03:35,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-20 07:03:38,482 INFO L129 PetriNetUnfolder]: 806/3070 cut-off events. [2021-11-20 07:03:38,482 INFO L130 PetriNetUnfolder]: For 89487/89528 co-relation queries the response was YES. [2021-11-20 07:03:38,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24984 conditions, 3070 events. 806/3070 cut-off events. For 89487/89528 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 25866 event pairs, 325 based on Foata normal form. 5/2977 useless extension candidates. Maximal degree in co-relation 24598. Up to 1075 conditions per place. [2021-11-20 07:03:38,606 INFO L132 encePairwiseOnDemand]: 189/210 looper letters, 459 selfloop transitions, 172 changer transitions 59/848 dead transitions. [2021-11-20 07:03:38,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 992 places, 848 transitions, 20121 flow [2021-11-20 07:03:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-20 07:03:38,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-11-20 07:03:38,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 4670 transitions. [2021-11-20 07:03:38,610 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7668308702791461 [2021-11-20 07:03:38,610 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 4670 transitions. [2021-11-20 07:03:38,610 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 4670 transitions. [2021-11-20 07:03:38,611 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-20 07:03:38,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 4670 transitions. [2021-11-20 07:03:38,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 161.0344827586207) internal successors, (4670), 29 states have internal predecessors, (4670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:38,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:38,621 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 210.0) internal successors, (6300), 30 states have internal predecessors, (6300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:38,621 INFO L186 Difference]: Start difference. First operand has 979 places, 773 transitions, 16730 flow. Second operand 29 states and 4670 transitions. [2021-11-20 07:03:38,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 992 places, 848 transitions, 20121 flow [2021-11-20 07:03:39,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 979 places, 848 transitions, 19752 flow, removed 66 selfloop flow, removed 13 redundant places. [2021-11-20 07:03:39,979 INFO L242 Difference]: Finished difference. Result has 992 places, 780 transitions, 17063 flow [2021-11-20 07:03:39,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=210, PETRI_DIFFERENCE_MINUEND_FLOW=16415, PETRI_DIFFERENCE_MINUEND_PLACES=951, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=773, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=17063, PETRI_PLACES=992, PETRI_TRANSITIONS=780} [2021-11-20 07:03:39,981 INFO L334 CegarLoopForPetriNet]: 187 programPoint places, 805 predicate places. [2021-11-20 07:03:39,981 INFO L470 AbstractCegarLoop]: Abstraction has has 992 places, 780 transitions, 17063 flow [2021-11-20 07:03:39,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:39,981 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-20 07:03:39,982 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] [2021-11-20 07:03:39,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2021-11-20 07:03:39,982 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-20 07:03:39,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:03:39,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1301603282, now seen corresponding path program 103 times [2021-11-20 07:03:39,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:03:39,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680937760] [2021-11-20 07:03:39,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:03:39,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:03:39,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:03:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:03:40,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:03:40,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680937760] [2021-11-20 07:03:40,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680937760] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:03:40,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:03:40,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-20 07:03:40,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706869171] [2021-11-20 07:03:40,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:03:40,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 07:03:40,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:03:40,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 07:03:40,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-11-20 07:03:40,166 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 210 [2021-11-20 07:03:40,168 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 992 places, 780 transitions, 17063 flow. Second operand has 14 states, 14 states have (on average 157.57142857142858) internal successors, (2206), 14 states have internal predecessors, (2206), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-20 07:03:40,169 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-20 07:03:40,169 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 210 [2021-11-20 07:03:40,169 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand