./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 57096758 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3 --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 3dcfb71b16f6783353008d1be8597dab2a9bd20e ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:28:15,893 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:28:15,896 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:28:15,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:28:15,948 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:28:15,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:28:15,952 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:28:15,955 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:28:15,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:28:15,959 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:28:15,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:28:15,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:28:15,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:28:15,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:28:15,967 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:28:15,969 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:28:15,970 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:28:15,972 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:28:15,974 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:28:15,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:28:15,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:28:15,984 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:28:15,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:28:15,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:28:16,004 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:28:16,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:28:16,007 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:28:16,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:28:16,011 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:28:16,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:28:16,014 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:28:16,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:28:16,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:28:16,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:28:16,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:28:16,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:28:16,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:28:16,023 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:28:16,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:28:16,025 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:28:16,025 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:28:16,026 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:28:16,069 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:28:16,074 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:28:16,075 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:28:16,075 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:28:16,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:28:16,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:28:16,081 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:28:16,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:28:16,082 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:28:16,082 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:28:16,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:28:16,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:28:16,084 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:28:16,084 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:28:16,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:28:16,085 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:28:16,085 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:28:16,085 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:28:16,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:28:16,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:28:16,086 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:28:16,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:28:16,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:28:16,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:28:16,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:28:16,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:28:16,088 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:28:16,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:28:16,089 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:28:16,090 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:28:16,091 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:28:16,091 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:28:16,092 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_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3dcfb71b16f6783353008d1be8597dab2a9bd20e [2021-10-15 19:28:16,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:28:16,400 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:28:16,403 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:28:16,404 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:28:16,405 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:28:16,406 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c [2021-10-15 19:28:16,506 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/data/9f2dcb840/a8c11085fb344ca79eb3991e6eb46a1c/FLAG9531637bc [2021-10-15 19:28:17,111 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:28:17,113 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c [2021-10-15 19:28:17,150 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/data/9f2dcb840/a8c11085fb344ca79eb3991e6eb46a1c/FLAG9531637bc [2021-10-15 19:28:17,392 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/data/9f2dcb840/a8c11085fb344ca79eb3991e6eb46a1c [2021-10-15 19:28:17,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:28:17,401 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:28:17,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:28:17,403 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:28:17,407 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:28:17,408 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:28:17" (1/1) ... [2021-10-15 19:28:17,409 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4569370e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:17, skipping insertion in model container [2021-10-15 19:28:17,410 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:28:17" (1/1) ... [2021-10-15 19:28:17,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:28:17,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:28:17,891 WARN L228 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_d3641427-3462-4c5b-a695-3813aa558ff1/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c[48585,48598] [2021-10-15 19:28:17,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:28:17,905 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:28:18,033 WARN L228 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_d3641427-3462-4c5b-a695-3813aa558ff1/sv-benchmarks/c/ntdrivers-simplified/floppy_simpl4.cil-2.c[48585,48598] [2021-10-15 19:28:18,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:28:18,069 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:28:18,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:18 WrapperNode [2021-10-15 19:28:18,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:28:18,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:28:18,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:28:18,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:28:18,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:18" (1/1) ... [2021-10-15 19:28:18,116 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:18" (1/1) ... [2021-10-15 19:28:18,246 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:28:18,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:28:18,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:28:18,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:28:18,258 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:18" (1/1) ... [2021-10-15 19:28:18,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:18" (1/1) ... [2021-10-15 19:28:18,267 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:18" (1/1) ... [2021-10-15 19:28:18,268 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:18" (1/1) ... [2021-10-15 19:28:18,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:18" (1/1) ... [2021-10-15 19:28:18,356 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:18" (1/1) ... [2021-10-15 19:28:18,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:18" (1/1) ... [2021-10-15 19:28:18,389 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:28:18,390 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:28:18,390 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:28:18,390 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:28:18,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:18" (1/1) ... [2021-10-15 19:28:18,403 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:28:18,413 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:28:18,425 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:28:18,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:28:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:28:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:28:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:28:18,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:28:18,763 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,783 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,790 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,807 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,810 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,812 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,826 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,840 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,865 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,871 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,874 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,878 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,882 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,886 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,888 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,889 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,894 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,897 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,898 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,899 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,902 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,906 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,911 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,916 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,919 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,922 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,926 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,932 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,933 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:18,935 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-15 19:28:20,298 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##658: assume !false; [2021-10-15 19:28:20,299 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##657: assume false; [2021-10-15 19:28:20,299 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##665: assume !false; [2021-10-15 19:28:20,299 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##664: assume false; [2021-10-15 19:28:20,299 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##683: assume false; [2021-10-15 19:28:20,300 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##684: assume !false; [2021-10-15 19:28:20,300 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##609: assume false; [2021-10-15 19:28:20,300 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##610: assume !false; [2021-10-15 19:28:20,300 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##639: assume false; [2021-10-15 19:28:20,301 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##640: assume !false; [2021-10-15 19:28:20,301 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##249: assume false; [2021-10-15 19:28:20,301 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##250: assume !false; [2021-10-15 19:28:20,301 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##279: assume false; [2021-10-15 19:28:20,302 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##280: assume !false; [2021-10-15 19:28:20,302 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##285: assume !false; [2021-10-15 19:28:20,302 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##284: assume false; [2021-10-15 19:28:20,302 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##229: assume !false; [2021-10-15 19:28:20,302 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##228: assume false; [2021-10-15 19:28:20,302 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##302: assume !false; [2021-10-15 19:28:20,303 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##301: assume false; [2021-10-15 19:28:20,303 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##369: assume !false; [2021-10-15 19:28:20,303 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##375: assume !false; [2021-10-15 19:28:20,303 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##374: assume false; [2021-10-15 19:28:20,304 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##331: assume false; [2021-10-15 19:28:20,304 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##332: assume !false; [2021-10-15 19:28:20,304 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##357: assume false; [2021-10-15 19:28:20,305 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##358: assume !false; [2021-10-15 19:28:20,305 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##368: assume false; [2021-10-15 19:28:20,306 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##404: assume !false; [2021-10-15 19:28:20,306 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##403: assume false; [2021-10-15 19:28:20,306 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##427: assume !false; [2021-10-15 19:28:20,306 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##426: assume false; [2021-10-15 19:28:20,306 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##436: assume !false; [2021-10-15 19:28:20,306 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##435: assume false; [2021-10-15 19:28:20,307 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##439: assume false; [2021-10-15 19:28:20,307 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##440: assume !false; [2021-10-15 19:28:20,307 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##463: assume false; [2021-10-15 19:28:20,307 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##464: assume !false; [2021-10-15 19:28:20,307 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##485: assume !false; [2021-10-15 19:28:20,309 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##484: assume false; [2021-10-15 19:28:20,309 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##524: assume !false; [2021-10-15 19:28:20,309 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##523: assume false; [2021-10-15 19:28:20,309 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##558: assume !false; [2021-10-15 19:28:20,309 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##557: assume false; [2021-10-15 19:28:20,309 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##187: assume !false; [2021-10-15 19:28:20,310 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##186: assume false; [2021-10-15 19:28:20,310 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##68: assume !false; [2021-10-15 19:28:20,310 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##67: assume false; [2021-10-15 19:28:20,310 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##144: assume false; [2021-10-15 19:28:20,310 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##145: assume !false; [2021-10-15 19:28:20,311 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume !false; [2021-10-15 19:28:20,311 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##16: assume false; [2021-10-15 19:28:20,311 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##154: assume !false; [2021-10-15 19:28:20,312 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##153: assume false; [2021-10-15 19:28:20,312 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##158: assume !false; [2021-10-15 19:28:20,312 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##157: assume false; [2021-10-15 19:28:20,312 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##588: assume !false; [2021-10-15 19:28:20,312 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##587: assume false; [2021-10-15 19:28:20,313 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##106: assume !false; [2021-10-15 19:28:20,313 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##105: assume false; [2021-10-15 19:28:20,344 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:28:20,345 INFO L299 CfgBuilder]: Removed 275 assume(true) statements. [2021-10-15 19:28:20,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:28:20 BoogieIcfgContainer [2021-10-15 19:28:20,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:28:20,353 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:28:20,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:28:20,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:28:20,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:28:17" (1/3) ... [2021-10-15 19:28:20,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ce7293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:28:20, skipping insertion in model container [2021-10-15 19:28:20,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:28:18" (2/3) ... [2021-10-15 19:28:20,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29ce7293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:28:20, skipping insertion in model container [2021-10-15 19:28:20,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:28:20" (3/3) ... [2021-10-15 19:28:20,362 INFO L111 eAbstractionObserver]: Analyzing ICFG floppy_simpl4.cil-2.c [2021-10-15 19:28:20,372 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:28:20,372 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 53 error locations. [2021-10-15 19:28:20,435 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:28:20,443 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, mConcurrency=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 [2021-10-15 19:28:20,443 INFO L340 AbstractCegarLoop]: Starting to check reachability of 53 error locations. [2021-10-15 19:28:20,476 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 570 places, 827 transitions, 1654 flow [2021-10-15 19:28:20,662 INFO L129 PetriNetUnfolder]: 258/827 cut-off events. [2021-10-15 19:28:20,662 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:28:20,674 INFO L84 FinitePrefix]: Finished finitePrefix Result has 828 conditions, 827 events. 258/827 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4289 event pairs, 0 based on Foata normal form. 0/516 useless extension candidates. Maximal degree in co-relation 0. Up to 17 conditions per place. [2021-10-15 19:28:20,677 INFO L82 GeneralOperation]: Start removeDead. Operand has 570 places, 827 transitions, 1654 flow [2021-10-15 19:28:20,708 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 564 places, 809 transitions, 1618 flow [2021-10-15 19:28:20,716 INFO L129 PetriNetUnfolder]: 8/41 cut-off events. [2021-10-15 19:28:20,720 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:28:20,720 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:20,721 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:20,722 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:20,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:20,746 INFO L82 PathProgramCache]: Analyzing trace with hash 538056098, now seen corresponding path program 1 times [2021-10-15 19:28:20,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:20,759 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31206619] [2021-10-15 19:28:20,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:20,769 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:21,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:21,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:21,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31206619] [2021-10-15 19:28:21,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31206619] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:21,005 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:21,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:21,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789231795] [2021-10-15 19:28:21,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:21,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:21,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:21,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:21,045 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:21,055 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 564 places, 809 transitions, 1618 flow. Second operand has 3 states, 3 states have (on average 583.6666666666666) internal successors, (1751), 3 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:21,055 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:21,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:21,057 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:21,591 INFO L129 PetriNetUnfolder]: 239/925 cut-off events. [2021-10-15 19:28:21,592 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:28:21,596 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1129 conditions, 925 events. 239/925 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5284 event pairs, 0 based on Foata normal form. 37/698 useless extension candidates. Maximal degree in co-relation 198. Up to 147 conditions per place. [2021-10-15 19:28:21,609 INFO L132 encePairwiseOnDemand]: 725/827 looper letters, 159 selfloop transitions, 43 changer transitions 0/753 dead transitions. [2021-10-15 19:28:21,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 528 places, 753 transitions, 1910 flow [2021-10-15 19:28:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:21,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:21,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2012 transitions. [2021-10-15 19:28:21,643 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8109633212414349 [2021-10-15 19:28:21,644 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2012 transitions. [2021-10-15 19:28:21,645 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2012 transitions. [2021-10-15 19:28:21,652 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:21,656 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2012 transitions. [2021-10-15 19:28:21,670 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 670.6666666666666) internal successors, (2012), 3 states have internal predecessors, (2012), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:21,698 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:21,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:21,705 INFO L186 Difference]: Start difference. First operand has 564 places, 809 transitions, 1618 flow. Second operand 3 states and 2012 transitions. [2021-10-15 19:28:21,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 528 places, 753 transitions, 1910 flow [2021-10-15 19:28:21,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 528 places, 753 transitions, 1910 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:28:21,747 INFO L242 Difference]: Finished difference. Result has 530 places, 731 transitions, 1672 flow [2021-10-15 19:28:21,751 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1438, PETRI_DIFFERENCE_MINUEND_PLACES=526, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=719, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=676, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1672, PETRI_PLACES=530, PETRI_TRANSITIONS=731} [2021-10-15 19:28:21,752 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -34 predicate places. [2021-10-15 19:28:21,752 INFO L470 AbstractCegarLoop]: Abstraction has has 530 places, 731 transitions, 1672 flow [2021-10-15 19:28:21,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 583.6666666666666) internal successors, (1751), 3 states have internal predecessors, (1751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:21,755 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:21,755 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:21,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:28:21,756 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:21,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:21,757 INFO L82 PathProgramCache]: Analyzing trace with hash 369677969, now seen corresponding path program 1 times [2021-10-15 19:28:21,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:21,757 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274846248] [2021-10-15 19:28:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:21,758 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:21,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:21,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:21,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:21,859 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274846248] [2021-10-15 19:28:21,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274846248] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:21,860 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:21,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:21,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221859968] [2021-10-15 19:28:21,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:21,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:21,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:21,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:21,871 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 754 out of 827 [2021-10-15 19:28:21,877 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 731 transitions, 1672 flow. Second operand has 3 states, 3 states have (on average 755.0) internal successors, (2265), 3 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:21,877 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:21,877 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 754 of 827 [2021-10-15 19:28:21,877 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:21,979 INFO L129 PetriNetUnfolder]: 238/924 cut-off events. [2021-10-15 19:28:21,979 INFO L130 PetriNetUnfolder]: For 40/40 co-relation queries the response was YES. [2021-10-15 19:28:21,981 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1048 conditions, 924 events. 238/924 cut-off events. For 40/40 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 5372 event pairs, 0 based on Foata normal form. 1/670 useless extension candidates. Maximal degree in co-relation 966. Up to 38 conditions per place. [2021-10-15 19:28:21,986 INFO L132 encePairwiseOnDemand]: 821/827 looper letters, 5 selfloop transitions, 5 changer transitions 0/730 dead transitions. [2021-10-15 19:28:21,987 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 532 places, 730 transitions, 1690 flow [2021-10-15 19:28:21,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:21,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:21,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2273 transitions. [2021-10-15 19:28:21,997 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9161628375654978 [2021-10-15 19:28:21,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2273 transitions. [2021-10-15 19:28:21,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2273 transitions. [2021-10-15 19:28:22,000 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:22,000 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2273 transitions. [2021-10-15 19:28:22,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 757.6666666666666) internal successors, (2273), 3 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,024 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,024 INFO L186 Difference]: Start difference. First operand has 530 places, 731 transitions, 1672 flow. Second operand 3 states and 2273 transitions. [2021-10-15 19:28:22,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 532 places, 730 transitions, 1690 flow [2021-10-15 19:28:22,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 530 places, 730 transitions, 1604 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:22,051 INFO L242 Difference]: Finished difference. Result has 530 places, 730 transitions, 1594 flow [2021-10-15 19:28:22,052 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=528, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=730, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=725, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1594, PETRI_PLACES=530, PETRI_TRANSITIONS=730} [2021-10-15 19:28:22,053 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -34 predicate places. [2021-10-15 19:28:22,053 INFO L470 AbstractCegarLoop]: Abstraction has has 530 places, 730 transitions, 1594 flow [2021-10-15 19:28:22,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 755.0) internal successors, (2265), 3 states have internal predecessors, (2265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,056 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:22,056 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:22,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:28:22,057 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:22,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1535636839, now seen corresponding path program 1 times [2021-10-15 19:28:22,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:22,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196944026] [2021-10-15 19:28:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:22,058 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:22,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:22,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:22,143 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196944026] [2021-10-15 19:28:22,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196944026] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:22,144 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:22,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:22,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370737513] [2021-10-15 19:28:22,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:22,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:22,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:22,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:22,150 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 756 out of 827 [2021-10-15 19:28:22,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 530 places, 730 transitions, 1594 flow. Second operand has 3 states, 3 states have (on average 757.6666666666666) internal successors, (2273), 3 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:22,181 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 756 of 827 [2021-10-15 19:28:22,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:22,272 INFO L129 PetriNetUnfolder]: 256/1027 cut-off events. [2021-10-15 19:28:22,272 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:28:22,273 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 1027 events. 256/1027 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 6318 event pairs, 0 based on Foata normal form. 0/749 useless extension candidates. Maximal degree in co-relation 1004. Up to 41 conditions per place. [2021-10-15 19:28:22,278 INFO L132 encePairwiseOnDemand]: 818/827 looper letters, 11 selfloop transitions, 4 changer transitions 0/727 dead transitions. [2021-10-15 19:28:22,278 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 526 places, 727 transitions, 1618 flow [2021-10-15 19:28:22,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:22,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:22,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2288 transitions. [2021-10-15 19:28:22,289 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9222087867795243 [2021-10-15 19:28:22,289 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2288 transitions. [2021-10-15 19:28:22,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2288 transitions. [2021-10-15 19:28:22,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:22,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2288 transitions. [2021-10-15 19:28:22,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 762.6666666666666) internal successors, (2288), 3 states have internal predecessors, (2288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,310 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,311 INFO L186 Difference]: Start difference. First operand has 530 places, 730 transitions, 1594 flow. Second operand 3 states and 2288 transitions. [2021-10-15 19:28:22,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 526 places, 727 transitions, 1618 flow [2021-10-15 19:28:22,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 524 places, 727 transitions, 1608 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:22,331 INFO L242 Difference]: Finished difference. Result has 525 places, 724 transitions, 1588 flow [2021-10-15 19:28:22,332 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=522, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1588, PETRI_PLACES=525, PETRI_TRANSITIONS=724} [2021-10-15 19:28:22,333 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -39 predicate places. [2021-10-15 19:28:22,333 INFO L470 AbstractCegarLoop]: Abstraction has has 525 places, 724 transitions, 1588 flow [2021-10-15 19:28:22,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 757.6666666666666) internal successors, (2273), 3 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,336 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:22,336 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:22,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:28:22,337 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:22,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:22,338 INFO L82 PathProgramCache]: Analyzing trace with hash 107438083, now seen corresponding path program 1 times [2021-10-15 19:28:22,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:22,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969678485] [2021-10-15 19:28:22,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:22,339 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:22,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:22,435 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:22,435 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:22,436 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969678485] [2021-10-15 19:28:22,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969678485] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:22,436 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:22,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:22,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344914523] [2021-10-15 19:28:22,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:22,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:22,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:22,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:22,450 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:22,453 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 525 places, 724 transitions, 1588 flow. Second operand has 3 states, 3 states have (on average 585.0) internal successors, (1755), 3 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,453 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:22,453 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:22,454 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:22,756 INFO L129 PetriNetUnfolder]: 264/1068 cut-off events. [2021-10-15 19:28:22,757 INFO L130 PetriNetUnfolder]: For 34/34 co-relation queries the response was YES. [2021-10-15 19:28:22,761 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1410 conditions, 1068 events. 264/1068 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6609 event pairs, 0 based on Foata normal form. 0/792 useless extension candidates. Maximal degree in co-relation 1187. Up to 218 conditions per place. [2021-10-15 19:28:22,767 INFO L132 encePairwiseOnDemand]: 812/827 looper letters, 174 selfloop transitions, 15 changer transitions 0/733 dead transitions. [2021-10-15 19:28:22,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 527 places, 733 transitions, 1986 flow [2021-10-15 19:28:22,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:22,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:22,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1925 transitions. [2021-10-15 19:28:22,777 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7758968158000806 [2021-10-15 19:28:22,777 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1925 transitions. [2021-10-15 19:28:22,777 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1925 transitions. [2021-10-15 19:28:22,779 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:22,780 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1925 transitions. [2021-10-15 19:28:22,787 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 641.6666666666666) internal successors, (1925), 3 states have internal predecessors, (1925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,797 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,801 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,801 INFO L186 Difference]: Start difference. First operand has 525 places, 724 transitions, 1588 flow. Second operand 3 states and 1925 transitions. [2021-10-15 19:28:22,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 527 places, 733 transitions, 1986 flow [2021-10-15 19:28:22,810 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 525 places, 733 transitions, 1978 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:22,826 INFO L242 Difference]: Finished difference. Result has 527 places, 726 transitions, 1652 flow [2021-10-15 19:28:22,828 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=523, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=709, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1652, PETRI_PLACES=527, PETRI_TRANSITIONS=726} [2021-10-15 19:28:22,828 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -37 predicate places. [2021-10-15 19:28:22,829 INFO L470 AbstractCegarLoop]: Abstraction has has 527 places, 726 transitions, 1652 flow [2021-10-15 19:28:22,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 585.0) internal successors, (1755), 3 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,831 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:22,831 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:22,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:28:22,832 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:22,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:22,832 INFO L82 PathProgramCache]: Analyzing trace with hash -710882736, now seen corresponding path program 1 times [2021-10-15 19:28:22,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:22,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373480799] [2021-10-15 19:28:22,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:22,834 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:22,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:22,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:22,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373480799] [2021-10-15 19:28:22,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373480799] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:22,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:22,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:22,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355764775] [2021-10-15 19:28:22,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:22,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:22,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:22,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:22,970 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 742 out of 827 [2021-10-15 19:28:22,975 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 527 places, 726 transitions, 1652 flow. Second operand has 3 states, 3 states have (on average 743.6666666666666) internal successors, (2231), 3 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:22,975 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:22,975 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 742 of 827 [2021-10-15 19:28:22,976 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:23,101 INFO L129 PetriNetUnfolder]: 311/1258 cut-off events. [2021-10-15 19:28:23,102 INFO L130 PetriNetUnfolder]: For 59/59 co-relation queries the response was YES. [2021-10-15 19:28:23,104 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1455 conditions, 1258 events. 311/1258 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8038 event pairs, 0 based on Foata normal form. 0/955 useless extension candidates. Maximal degree in co-relation 1250. Up to 53 conditions per place. [2021-10-15 19:28:23,111 INFO L132 encePairwiseOnDemand]: 810/827 looper letters, 15 selfloop transitions, 6 changer transitions 0/659 dead transitions. [2021-10-15 19:28:23,111 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 659 transitions, 1560 flow [2021-10-15 19:28:23,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:23,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2258 transitions. [2021-10-15 19:28:23,121 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9101168883514712 [2021-10-15 19:28:23,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2258 transitions. [2021-10-15 19:28:23,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2258 transitions. [2021-10-15 19:28:23,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:23,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2258 transitions. [2021-10-15 19:28:23,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 752.6666666666666) internal successors, (2258), 3 states have internal predecessors, (2258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:23,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:23,148 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:23,148 INFO L186 Difference]: Start difference. First operand has 527 places, 726 transitions, 1652 flow. Second operand 3 states and 2258 transitions. [2021-10-15 19:28:23,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 659 transitions, 1560 flow [2021-10-15 19:28:23,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 659 transitions, 1530 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:23,170 INFO L242 Difference]: Finished difference. Result has 477 places, 659 transitions, 1516 flow [2021-10-15 19:28:23,172 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1486, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=652, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1516, PETRI_PLACES=477, PETRI_TRANSITIONS=659} [2021-10-15 19:28:23,172 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -87 predicate places. [2021-10-15 19:28:23,173 INFO L470 AbstractCegarLoop]: Abstraction has has 477 places, 659 transitions, 1516 flow [2021-10-15 19:28:23,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 743.6666666666666) internal successors, (2231), 3 states have internal predecessors, (2231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:23,194 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:23,194 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:23,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:28:23,195 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:23,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:23,196 INFO L82 PathProgramCache]: Analyzing trace with hash -946930085, now seen corresponding path program 1 times [2021-10-15 19:28:23,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:23,196 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298319428] [2021-10-15 19:28:23,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:23,197 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:23,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:23,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:23,303 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298319428] [2021-10-15 19:28:23,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298319428] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:23,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:23,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:23,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440678417] [2021-10-15 19:28:23,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:23,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:23,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:23,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:23,312 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:23,316 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 659 transitions, 1516 flow. Second operand has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:23,316 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:23,316 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:23,317 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:23,662 INFO L129 PetriNetUnfolder]: 308/1255 cut-off events. [2021-10-15 19:28:23,663 INFO L130 PetriNetUnfolder]: For 95/95 co-relation queries the response was YES. [2021-10-15 19:28:23,665 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1703 conditions, 1255 events. 308/1255 cut-off events. For 95/95 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8042 event pairs, 0 based on Foata normal form. 0/955 useless extension candidates. Maximal degree in co-relation 1442. Up to 236 conditions per place. [2021-10-15 19:28:23,672 INFO L132 encePairwiseOnDemand]: 814/827 looper letters, 158 selfloop transitions, 14 changer transitions 0/665 dead transitions. [2021-10-15 19:28:23,672 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 665 transitions, 1874 flow [2021-10-15 19:28:23,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:23,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:23,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2489 transitions. [2021-10-15 19:28:23,684 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7524183796856106 [2021-10-15 19:28:23,684 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2489 transitions. [2021-10-15 19:28:23,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2489 transitions. [2021-10-15 19:28:23,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:23,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2489 transitions. [2021-10-15 19:28:23,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 622.25) internal successors, (2489), 4 states have internal predecessors, (2489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:23,705 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:23,707 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:23,707 INFO L186 Difference]: Start difference. First operand has 477 places, 659 transitions, 1516 flow. Second operand 4 states and 2489 transitions. [2021-10-15 19:28:23,708 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 665 transitions, 1874 flow [2021-10-15 19:28:23,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 665 transitions, 1862 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:23,757 INFO L242 Difference]: Finished difference. Result has 479 places, 659 transitions, 1547 flow [2021-10-15 19:28:23,759 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1547, PETRI_PLACES=479, PETRI_TRANSITIONS=659} [2021-10-15 19:28:23,759 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -85 predicate places. [2021-10-15 19:28:23,759 INFO L470 AbstractCegarLoop]: Abstraction has has 479 places, 659 transitions, 1547 flow [2021-10-15 19:28:23,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:23,761 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:23,761 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] [2021-10-15 19:28:23,761 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 19:28:23,761 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:23,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:23,762 INFO L82 PathProgramCache]: Analyzing trace with hash 180670674, now seen corresponding path program 1 times [2021-10-15 19:28:23,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:23,762 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649506995] [2021-10-15 19:28:23,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:23,762 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:23,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:23,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:23,839 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649506995] [2021-10-15 19:28:23,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649506995] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:23,839 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:23,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:23,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003465317] [2021-10-15 19:28:23,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:23,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:23,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:23,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:23,854 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:23,857 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 659 transitions, 1547 flow. Second operand has 4 states, 4 states have (on average 584.25) internal successors, (2337), 4 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:23,857 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:23,858 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:23,858 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:24,195 INFO L129 PetriNetUnfolder]: 305/1252 cut-off events. [2021-10-15 19:28:24,195 INFO L130 PetriNetUnfolder]: For 248/248 co-relation queries the response was YES. [2021-10-15 19:28:24,197 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1721 conditions, 1252 events. 305/1252 cut-off events. For 248/248 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8031 event pairs, 0 based on Foata normal form. 0/965 useless extension candidates. Maximal degree in co-relation 1476. Up to 236 conditions per place. [2021-10-15 19:28:24,204 INFO L132 encePairwiseOnDemand]: 814/827 looper letters, 157 selfloop transitions, 14 changer transitions 0/664 dead transitions. [2021-10-15 19:28:24,205 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 664 transitions, 1901 flow [2021-10-15 19:28:24,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:24,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:24,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2488 transitions. [2021-10-15 19:28:24,216 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7521160822249093 [2021-10-15 19:28:24,216 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2488 transitions. [2021-10-15 19:28:24,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2488 transitions. [2021-10-15 19:28:24,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:24,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2488 transitions. [2021-10-15 19:28:24,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 622.0) internal successors, (2488), 4 states have internal predecessors, (2488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,239 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,240 INFO L186 Difference]: Start difference. First operand has 479 places, 659 transitions, 1547 flow. Second operand 4 states and 2488 transitions. [2021-10-15 19:28:24,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 664 transitions, 1901 flow [2021-10-15 19:28:24,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 481 places, 664 transitions, 1900 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:24,264 INFO L242 Difference]: Finished difference. Result has 482 places, 659 transitions, 1589 flow [2021-10-15 19:28:24,265 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1546, PETRI_DIFFERENCE_MINUEND_PLACES=478, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=645, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1589, PETRI_PLACES=482, PETRI_TRANSITIONS=659} [2021-10-15 19:28:24,266 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -82 predicate places. [2021-10-15 19:28:24,266 INFO L470 AbstractCegarLoop]: Abstraction has has 482 places, 659 transitions, 1589 flow [2021-10-15 19:28:24,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 584.25) internal successors, (2337), 4 states have internal predecessors, (2337), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,267 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:24,267 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] [2021-10-15 19:28:24,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 19:28:24,268 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:24,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:24,268 INFO L82 PathProgramCache]: Analyzing trace with hash 945560178, now seen corresponding path program 1 times [2021-10-15 19:28:24,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:24,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262632247] [2021-10-15 19:28:24,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:24,270 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:24,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:24,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:24,337 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262632247] [2021-10-15 19:28:24,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262632247] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:24,338 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:24,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:24,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214839459] [2021-10-15 19:28:24,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:24,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:24,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:24,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:24,349 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 750 out of 827 [2021-10-15 19:28:24,353 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 482 places, 659 transitions, 1589 flow. Second operand has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,353 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:24,353 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 750 of 827 [2021-10-15 19:28:24,353 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:24,503 INFO L129 PetriNetUnfolder]: 304/1261 cut-off events. [2021-10-15 19:28:24,504 INFO L130 PetriNetUnfolder]: For 336/336 co-relation queries the response was YES. [2021-10-15 19:28:24,506 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1520 conditions, 1261 events. 304/1261 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 8139 event pairs, 0 based on Foata normal form. 1/975 useless extension candidates. Maximal degree in co-relation 1266. Up to 53 conditions per place. [2021-10-15 19:28:24,511 INFO L132 encePairwiseOnDemand]: 821/827 looper letters, 5 selfloop transitions, 3 changer transitions 11/660 dead transitions. [2021-10-15 19:28:24,511 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 660 transitions, 1621 flow [2021-10-15 19:28:24,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:24,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:24,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3016 transitions. [2021-10-15 19:28:24,521 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9117291414752116 [2021-10-15 19:28:24,522 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3016 transitions. [2021-10-15 19:28:24,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3016 transitions. [2021-10-15 19:28:24,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:24,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3016 transitions. [2021-10-15 19:28:24,533 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 754.0) internal successors, (3016), 4 states have internal predecessors, (3016), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,543 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,543 INFO L186 Difference]: Start difference. First operand has 482 places, 659 transitions, 1589 flow. Second operand 4 states and 3016 transitions. [2021-10-15 19:28:24,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 660 transitions, 1621 flow [2021-10-15 19:28:24,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 660 transitions, 1606 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:24,564 INFO L242 Difference]: Finished difference. Result has 484 places, 649 transitions, 1544 flow [2021-10-15 19:28:24,565 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1574, PETRI_DIFFERENCE_MINUEND_PLACES=480, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=659, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=656, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1544, PETRI_PLACES=484, PETRI_TRANSITIONS=649} [2021-10-15 19:28:24,565 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -80 predicate places. [2021-10-15 19:28:24,566 INFO L470 AbstractCegarLoop]: Abstraction has has 484 places, 649 transitions, 1544 flow [2021-10-15 19:28:24,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,567 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:24,567 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] [2021-10-15 19:28:24,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 19:28:24,568 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:24,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:24,569 INFO L82 PathProgramCache]: Analyzing trace with hash 2136813194, now seen corresponding path program 1 times [2021-10-15 19:28:24,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:24,569 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313508374] [2021-10-15 19:28:24,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:24,570 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:24,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:24,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:24,623 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313508374] [2021-10-15 19:28:24,623 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313508374] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:24,623 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:24,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:24,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501152800] [2021-10-15 19:28:24,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:24,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:24,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:24,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:24,628 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:24,630 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 649 transitions, 1544 flow. Second operand has 3 states, 3 states have (on average 584.6666666666666) internal successors, (1754), 3 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,631 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:24,631 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:24,631 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:24,872 INFO L129 PetriNetUnfolder]: 303/1224 cut-off events. [2021-10-15 19:28:24,872 INFO L130 PetriNetUnfolder]: For 331/331 co-relation queries the response was YES. [2021-10-15 19:28:24,875 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 1224 events. 303/1224 cut-off events. For 331/331 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 7779 event pairs, 0 based on Foata normal form. 0/952 useless extension candidates. Maximal degree in co-relation 1698. Up to 234 conditions per place. [2021-10-15 19:28:24,881 INFO L132 encePairwiseOnDemand]: 777/827 looper letters, 114 selfloop transitions, 42 changer transitions 0/633 dead transitions. [2021-10-15 19:28:24,881 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 633 transitions, 1824 flow [2021-10-15 19:28:24,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:24,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:24,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1896 transitions. [2021-10-15 19:28:24,888 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7642079806529625 [2021-10-15 19:28:24,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1896 transitions. [2021-10-15 19:28:24,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1896 transitions. [2021-10-15 19:28:24,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:24,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1896 transitions. [2021-10-15 19:28:24,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 632.0) internal successors, (1896), 3 states have internal predecessors, (1896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,903 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,904 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,904 INFO L186 Difference]: Start difference. First operand has 484 places, 649 transitions, 1544 flow. Second operand 3 states and 1896 transitions. [2021-10-15 19:28:24,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 633 transitions, 1824 flow [2021-10-15 19:28:24,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 633 transitions, 1816 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-10-15 19:28:24,931 INFO L242 Difference]: Finished difference. Result has 458 places, 633 transitions, 1588 flow [2021-10-15 19:28:24,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=591, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1588, PETRI_PLACES=458, PETRI_TRANSITIONS=633} [2021-10-15 19:28:24,932 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -106 predicate places. [2021-10-15 19:28:24,933 INFO L470 AbstractCegarLoop]: Abstraction has has 458 places, 633 transitions, 1588 flow [2021-10-15 19:28:24,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 584.6666666666666) internal successors, (1754), 3 states have internal predecessors, (1754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:24,934 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:24,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 19:28:24,935 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:24,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:24,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1702819901, now seen corresponding path program 1 times [2021-10-15 19:28:24,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:24,936 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567046513] [2021-10-15 19:28:24,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:24,936 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:24,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:24,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:24,985 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567046513] [2021-10-15 19:28:24,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567046513] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:24,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:24,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:24,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450185558] [2021-10-15 19:28:24,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:24,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:24,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:24,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:24,993 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 753 out of 827 [2021-10-15 19:28:24,997 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 458 places, 633 transitions, 1588 flow. Second operand has 3 states, 3 states have (on average 754.3333333333334) internal successors, (2263), 3 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:24,997 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:24,997 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 753 of 827 [2021-10-15 19:28:24,997 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:25,193 INFO L129 PetriNetUnfolder]: 355/1503 cut-off events. [2021-10-15 19:28:25,193 INFO L130 PetriNetUnfolder]: For 290/290 co-relation queries the response was YES. [2021-10-15 19:28:25,196 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1864 conditions, 1503 events. 355/1503 cut-off events. For 290/290 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 10404 event pairs, 0 based on Foata normal form. 0/1197 useless extension candidates. Maximal degree in co-relation 1556. Up to 58 conditions per place. [2021-10-15 19:28:25,203 INFO L132 encePairwiseOnDemand]: 824/827 looper letters, 18 selfloop transitions, 2 changer transitions 0/634 dead transitions. [2021-10-15 19:28:25,203 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 634 transitions, 1630 flow [2021-10-15 19:28:25,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:25,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:25,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2280 transitions. [2021-10-15 19:28:25,213 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9189842805320435 [2021-10-15 19:28:25,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2280 transitions. [2021-10-15 19:28:25,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2280 transitions. [2021-10-15 19:28:25,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:25,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2280 transitions. [2021-10-15 19:28:25,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 760.0) internal successors, (2280), 3 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,233 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,234 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,235 INFO L186 Difference]: Start difference. First operand has 458 places, 633 transitions, 1588 flow. Second operand 3 states and 2280 transitions. [2021-10-15 19:28:25,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 634 transitions, 1630 flow [2021-10-15 19:28:25,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 634 transitions, 1546 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:25,266 INFO L242 Difference]: Finished difference. Result has 460 places, 634 transitions, 1518 flow [2021-10-15 19:28:25,268 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=631, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1518, PETRI_PLACES=460, PETRI_TRANSITIONS=634} [2021-10-15 19:28:25,269 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -104 predicate places. [2021-10-15 19:28:25,269 INFO L470 AbstractCegarLoop]: Abstraction has has 460 places, 634 transitions, 1518 flow [2021-10-15 19:28:25,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 754.3333333333334) internal successors, (2263), 3 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,270 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:25,271 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] [2021-10-15 19:28:25,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 19:28:25,271 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:25,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:25,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1912089025, now seen corresponding path program 1 times [2021-10-15 19:28:25,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:25,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912198349] [2021-10-15 19:28:25,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:25,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:25,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:25,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:25,338 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912198349] [2021-10-15 19:28:25,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912198349] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:25,339 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:25,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:25,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465819306] [2021-10-15 19:28:25,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:25,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:25,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:25,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:25,351 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 757 out of 827 [2021-10-15 19:28:25,356 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 460 places, 634 transitions, 1518 flow. Second operand has 4 states, 4 states have (on average 758.25) internal successors, (3033), 4 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,356 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:25,356 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 757 of 827 [2021-10-15 19:28:25,356 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:25,560 INFO L129 PetriNetUnfolder]: 355/1620 cut-off events. [2021-10-15 19:28:25,560 INFO L130 PetriNetUnfolder]: For 310/310 co-relation queries the response was YES. [2021-10-15 19:28:25,564 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1979 conditions, 1620 events. 355/1620 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 11778 event pairs, 0 based on Foata normal form. 0/1308 useless extension candidates. Maximal degree in co-relation 1566. Up to 66 conditions per place. [2021-10-15 19:28:25,571 INFO L132 encePairwiseOnDemand]: 820/827 looper letters, 12 selfloop transitions, 6 changer transitions 0/637 dead transitions. [2021-10-15 19:28:25,571 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 637 transitions, 1560 flow [2021-10-15 19:28:25,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:28:25,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:28:25,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3804 transitions. [2021-10-15 19:28:25,586 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9199516324062877 [2021-10-15 19:28:25,586 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3804 transitions. [2021-10-15 19:28:25,586 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3804 transitions. [2021-10-15 19:28:25,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:25,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3804 transitions. [2021-10-15 19:28:25,602 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 760.8) internal successors, (3804), 5 states have internal predecessors, (3804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,616 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,617 INFO L186 Difference]: Start difference. First operand has 460 places, 634 transitions, 1518 flow. Second operand 5 states and 3804 transitions. [2021-10-15 19:28:25,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 637 transitions, 1560 flow [2021-10-15 19:28:25,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 463 places, 637 transitions, 1558 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:25,647 INFO L242 Difference]: Finished difference. Result has 466 places, 636 transitions, 1549 flow [2021-10-15 19:28:25,649 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1516, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=628, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1549, PETRI_PLACES=466, PETRI_TRANSITIONS=636} [2021-10-15 19:28:25,649 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -98 predicate places. [2021-10-15 19:28:25,649 INFO L470 AbstractCegarLoop]: Abstraction has has 466 places, 636 transitions, 1549 flow [2021-10-15 19:28:25,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 758.25) internal successors, (3033), 4 states have internal predecessors, (3033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,652 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:25,652 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] [2021-10-15 19:28:25,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 19:28:25,653 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:25,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:25,653 INFO L82 PathProgramCache]: Analyzing trace with hash 458221239, now seen corresponding path program 1 times [2021-10-15 19:28:25,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:25,654 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389027462] [2021-10-15 19:28:25,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:25,654 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:25,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:25,730 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:25,730 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389027462] [2021-10-15 19:28:25,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389027462] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:25,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:25,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:25,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871176762] [2021-10-15 19:28:25,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:25,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:25,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:25,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:25,739 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 748 out of 827 [2021-10-15 19:28:25,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 636 transitions, 1549 flow. Second operand has 4 states, 4 states have (on average 750.0) internal successors, (3000), 4 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:25,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 748 of 827 [2021-10-15 19:28:25,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:25,906 INFO L129 PetriNetUnfolder]: 354/1630 cut-off events. [2021-10-15 19:28:25,907 INFO L130 PetriNetUnfolder]: For 314/314 co-relation queries the response was YES. [2021-10-15 19:28:25,911 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2079 conditions, 1630 events. 354/1630 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 11921 event pairs, 0 based on Foata normal form. 1/1320 useless extension candidates. Maximal degree in co-relation 1791. Up to 85 conditions per place. [2021-10-15 19:28:25,919 INFO L132 encePairwiseOnDemand]: 824/827 looper letters, 13 selfloop transitions, 0 changer transitions 5/638 dead transitions. [2021-10-15 19:28:25,919 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 638 transitions, 1585 flow [2021-10-15 19:28:25,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:25,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:25,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3009 transitions. [2021-10-15 19:28:25,930 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9096130592503023 [2021-10-15 19:28:25,931 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3009 transitions. [2021-10-15 19:28:25,931 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3009 transitions. [2021-10-15 19:28:25,934 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:25,934 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3009 transitions. [2021-10-15 19:28:25,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 752.25) internal successors, (3009), 4 states have internal predecessors, (3009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,952 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,954 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,954 INFO L186 Difference]: Start difference. First operand has 466 places, 636 transitions, 1549 flow. Second operand 4 states and 3009 transitions. [2021-10-15 19:28:25,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 638 transitions, 1585 flow [2021-10-15 19:28:25,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 638 transitions, 1585 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:28:25,977 INFO L242 Difference]: Finished difference. Result has 471 places, 633 transitions, 1538 flow [2021-10-15 19:28:25,979 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1549, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=636, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=636, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1538, PETRI_PLACES=471, PETRI_TRANSITIONS=633} [2021-10-15 19:28:25,979 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -93 predicate places. [2021-10-15 19:28:25,979 INFO L470 AbstractCegarLoop]: Abstraction has has 471 places, 633 transitions, 1538 flow [2021-10-15 19:28:25,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 750.0) internal successors, (3000), 4 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:25,981 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:25,982 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] [2021-10-15 19:28:25,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-15 19:28:25,982 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:25,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:25,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2044140679, now seen corresponding path program 1 times [2021-10-15 19:28:25,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:25,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309450149] [2021-10-15 19:28:25,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:25,984 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:26,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:26,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:26,070 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:26,070 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309450149] [2021-10-15 19:28:26,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [309450149] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:26,070 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:26,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:26,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552940237] [2021-10-15 19:28:26,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:26,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:26,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:26,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:26,080 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 748 out of 827 [2021-10-15 19:28:26,084 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 633 transitions, 1538 flow. Second operand has 4 states, 4 states have (on average 749.25) internal successors, (2997), 4 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,084 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:26,084 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 748 of 827 [2021-10-15 19:28:26,084 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:26,258 INFO L129 PetriNetUnfolder]: 353/1633 cut-off events. [2021-10-15 19:28:26,258 INFO L130 PetriNetUnfolder]: For 314/314 co-relation queries the response was YES. [2021-10-15 19:28:26,264 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2066 conditions, 1633 events. 353/1633 cut-off events. For 314/314 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 11994 event pairs, 0 based on Foata normal form. 0/1333 useless extension candidates. Maximal degree in co-relation 2051. Up to 68 conditions per place. [2021-10-15 19:28:26,272 INFO L132 encePairwiseOnDemand]: 813/827 looper letters, 14 selfloop transitions, 13 changer transitions 0/636 dead transitions. [2021-10-15 19:28:26,272 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 636 transitions, 1598 flow [2021-10-15 19:28:26,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:26,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:26,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3020 transitions. [2021-10-15 19:28:26,283 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9129383313180169 [2021-10-15 19:28:26,283 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3020 transitions. [2021-10-15 19:28:26,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3020 transitions. [2021-10-15 19:28:26,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:26,287 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3020 transitions. [2021-10-15 19:28:26,299 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 755.0) internal successors, (3020), 4 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,311 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,311 INFO L186 Difference]: Start difference. First operand has 471 places, 633 transitions, 1538 flow. Second operand 4 states and 3020 transitions. [2021-10-15 19:28:26,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 636 transitions, 1598 flow [2021-10-15 19:28:26,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 636 transitions, 1594 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:26,339 INFO L242 Difference]: Finished difference. Result has 470 places, 634 transitions, 1580 flow [2021-10-15 19:28:26,340 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1534, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=633, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1580, PETRI_PLACES=470, PETRI_TRANSITIONS=634} [2021-10-15 19:28:26,341 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -94 predicate places. [2021-10-15 19:28:26,341 INFO L470 AbstractCegarLoop]: Abstraction has has 470 places, 634 transitions, 1580 flow [2021-10-15 19:28:26,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 749.25) internal successors, (2997), 4 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,343 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:26,343 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] [2021-10-15 19:28:26,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-15 19:28:26,343 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:26,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:26,344 INFO L82 PathProgramCache]: Analyzing trace with hash -1890850171, now seen corresponding path program 1 times [2021-10-15 19:28:26,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:26,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812072170] [2021-10-15 19:28:26,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:26,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:26,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:26,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:26,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:26,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812072170] [2021-10-15 19:28:26,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812072170] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:26,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:26,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:26,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151234104] [2021-10-15 19:28:26,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:26,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:26,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:26,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:26,412 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 756 out of 827 [2021-10-15 19:28:26,416 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 634 transitions, 1580 flow. Second operand has 3 states, 3 states have (on average 758.3333333333334) internal successors, (2275), 3 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,417 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:26,417 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 756 of 827 [2021-10-15 19:28:26,417 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:26,567 INFO L129 PetriNetUnfolder]: 335/1553 cut-off events. [2021-10-15 19:28:26,567 INFO L130 PetriNetUnfolder]: For 302/302 co-relation queries the response was YES. [2021-10-15 19:28:26,571 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1966 conditions, 1553 events. 335/1553 cut-off events. For 302/302 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 11356 event pairs, 0 based on Foata normal form. 18/1276 useless extension candidates. Maximal degree in co-relation 1950. Up to 62 conditions per place. [2021-10-15 19:28:26,579 INFO L132 encePairwiseOnDemand]: 821/827 looper letters, 9 selfloop transitions, 1 changer transitions 7/634 dead transitions. [2021-10-15 19:28:26,579 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 472 places, 634 transitions, 1604 flow [2021-10-15 19:28:26,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:26,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:26,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2283 transitions. [2021-10-15 19:28:26,588 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9201934703748489 [2021-10-15 19:28:26,588 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2283 transitions. [2021-10-15 19:28:26,588 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2283 transitions. [2021-10-15 19:28:26,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:26,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2283 transitions. [2021-10-15 19:28:26,595 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,603 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,604 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,605 INFO L186 Difference]: Start difference. First operand has 470 places, 634 transitions, 1580 flow. Second operand 3 states and 2283 transitions. [2021-10-15 19:28:26,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 472 places, 634 transitions, 1604 flow [2021-10-15 19:28:26,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 634 transitions, 1592 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:26,632 INFO L242 Difference]: Finished difference. Result has 472 places, 627 transitions, 1561 flow [2021-10-15 19:28:26,633 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1568, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=634, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=633, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1561, PETRI_PLACES=472, PETRI_TRANSITIONS=627} [2021-10-15 19:28:26,633 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -92 predicate places. [2021-10-15 19:28:26,634 INFO L470 AbstractCegarLoop]: Abstraction has has 472 places, 627 transitions, 1561 flow [2021-10-15 19:28:26,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 758.3333333333334) internal successors, (2275), 3 states have internal predecessors, (2275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,635 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:26,635 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] [2021-10-15 19:28:26,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-15 19:28:26,636 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:26,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:26,636 INFO L82 PathProgramCache]: Analyzing trace with hash -1636712997, now seen corresponding path program 1 times [2021-10-15 19:28:26,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:26,637 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074798966] [2021-10-15 19:28:26,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:26,637 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:26,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:26,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:26,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:26,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074798966] [2021-10-15 19:28:26,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074798966] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:26,691 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:26,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:26,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56459005] [2021-10-15 19:28:26,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:26,692 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:26,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:26,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:26,700 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 748 out of 827 [2021-10-15 19:28:26,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 627 transitions, 1561 flow. Second operand has 4 states, 4 states have (on average 749.25) internal successors, (2997), 4 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,704 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:26,704 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 748 of 827 [2021-10-15 19:28:26,704 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:26,900 INFO L129 PetriNetUnfolder]: 330/1542 cut-off events. [2021-10-15 19:28:26,900 INFO L130 PetriNetUnfolder]: For 291/291 co-relation queries the response was YES. [2021-10-15 19:28:26,904 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1974 conditions, 1542 events. 330/1542 cut-off events. For 291/291 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 11290 event pairs, 0 based on Foata normal form. 1/1250 useless extension candidates. Maximal degree in co-relation 1957. Up to 61 conditions per place. [2021-10-15 19:28:26,911 INFO L132 encePairwiseOnDemand]: 821/827 looper letters, 23 selfloop transitions, 5 changer transitions 0/630 dead transitions. [2021-10-15 19:28:26,911 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 630 transitions, 1625 flow [2021-10-15 19:28:26,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:26,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3020 transitions. [2021-10-15 19:28:26,922 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9129383313180169 [2021-10-15 19:28:26,922 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3020 transitions. [2021-10-15 19:28:26,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3020 transitions. [2021-10-15 19:28:26,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:26,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3020 transitions. [2021-10-15 19:28:26,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 755.0) internal successors, (3020), 4 states have internal predecessors, (3020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,940 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,942 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,942 INFO L186 Difference]: Start difference. First operand has 472 places, 627 transitions, 1561 flow. Second operand 4 states and 3020 transitions. [2021-10-15 19:28:26,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 630 transitions, 1625 flow [2021-10-15 19:28:26,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 630 transitions, 1624 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:26,969 INFO L242 Difference]: Finished difference. Result has 472 places, 628 transitions, 1584 flow [2021-10-15 19:28:26,970 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1560, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=622, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1584, PETRI_PLACES=472, PETRI_TRANSITIONS=628} [2021-10-15 19:28:26,971 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -92 predicate places. [2021-10-15 19:28:26,971 INFO L470 AbstractCegarLoop]: Abstraction has has 472 places, 628 transitions, 1584 flow [2021-10-15 19:28:26,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 749.25) internal successors, (2997), 4 states have internal predecessors, (2997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:26,973 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:26,973 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] [2021-10-15 19:28:26,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-15 19:28:26,975 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:26,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:26,976 INFO L82 PathProgramCache]: Analyzing trace with hash -757555065, now seen corresponding path program 1 times [2021-10-15 19:28:26,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:26,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224504310] [2021-10-15 19:28:26,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:26,977 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:26,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:27,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:27,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:27,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224504310] [2021-10-15 19:28:27,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224504310] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:27,024 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:27,025 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:27,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900734524] [2021-10-15 19:28:27,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:27,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:27,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:27,031 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:27,033 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 628 transitions, 1584 flow. Second operand has 3 states, 3 states have (on average 584.0) internal successors, (1752), 3 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:27,034 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:27,034 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:27,034 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:27,369 INFO L129 PetriNetUnfolder]: 432/1931 cut-off events. [2021-10-15 19:28:27,370 INFO L130 PetriNetUnfolder]: For 594/594 co-relation queries the response was YES. [2021-10-15 19:28:27,375 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2841 conditions, 1931 events. 432/1931 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 14475 event pairs, 0 based on Foata normal form. 0/1558 useless extension candidates. Maximal degree in co-relation 2822. Up to 360 conditions per place. [2021-10-15 19:28:27,384 INFO L132 encePairwiseOnDemand]: 800/827 looper letters, 159 selfloop transitions, 30 changer transitions 4/666 dead transitions. [2021-10-15 19:28:27,384 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 666 transitions, 2129 flow [2021-10-15 19:28:27,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:27,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:27,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1921 transitions. [2021-10-15 19:28:27,391 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7742845626763402 [2021-10-15 19:28:27,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1921 transitions. [2021-10-15 19:28:27,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1921 transitions. [2021-10-15 19:28:27,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:27,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1921 transitions. [2021-10-15 19:28:27,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 640.3333333333334) internal successors, (1921), 3 states have internal predecessors, (1921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:27,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:27,404 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:27,404 INFO L186 Difference]: Start difference. First operand has 472 places, 628 transitions, 1584 flow. Second operand 3 states and 1921 transitions. [2021-10-15 19:28:27,405 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 666 transitions, 2129 flow [2021-10-15 19:28:27,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 666 transitions, 2123 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:27,430 INFO L242 Difference]: Finished difference. Result has 475 places, 651 transitions, 1858 flow [2021-10-15 19:28:27,431 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1578, PETRI_DIFFERENCE_MINUEND_PLACES=471, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=628, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1858, PETRI_PLACES=475, PETRI_TRANSITIONS=651} [2021-10-15 19:28:27,431 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -89 predicate places. [2021-10-15 19:28:27,432 INFO L470 AbstractCegarLoop]: Abstraction has has 475 places, 651 transitions, 1858 flow [2021-10-15 19:28:27,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 584.0) internal successors, (1752), 3 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:27,433 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:27,433 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] [2021-10-15 19:28:27,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-15 19:28:27,433 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:27,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:27,434 INFO L82 PathProgramCache]: Analyzing trace with hash 118473869, now seen corresponding path program 1 times [2021-10-15 19:28:27,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:27,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398741365] [2021-10-15 19:28:27,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:27,435 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:27,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:27,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:27,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398741365] [2021-10-15 19:28:27,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398741365] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:27,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:27,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:27,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250415777] [2021-10-15 19:28:27,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:27,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:27,493 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 750 out of 827 [2021-10-15 19:28:27,497 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 651 transitions, 1858 flow. Second operand has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:27,497 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:27,498 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 750 of 827 [2021-10-15 19:28:27,498 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:27,718 INFO L129 PetriNetUnfolder]: 431/1941 cut-off events. [2021-10-15 19:28:27,719 INFO L130 PetriNetUnfolder]: For 566/566 co-relation queries the response was YES. [2021-10-15 19:28:27,724 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2708 conditions, 1941 events. 431/1941 cut-off events. For 566/566 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 14622 event pairs, 0 based on Foata normal form. 1/1603 useless extension candidates. Maximal degree in co-relation 2688. Up to 91 conditions per place. [2021-10-15 19:28:27,733 INFO L132 encePairwiseOnDemand]: 824/827 looper letters, 11 selfloop transitions, 0 changer transitions 5/653 dead transitions. [2021-10-15 19:28:27,734 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 653 transitions, 1890 flow [2021-10-15 19:28:27,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:27,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:27,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3015 transitions. [2021-10-15 19:28:27,745 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9114268440145102 [2021-10-15 19:28:27,745 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3015 transitions. [2021-10-15 19:28:27,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3015 transitions. [2021-10-15 19:28:27,747 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:27,747 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3015 transitions. [2021-10-15 19:28:27,753 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 753.75) internal successors, (3015), 4 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:27,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:27,767 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:27,767 INFO L186 Difference]: Start difference. First operand has 475 places, 651 transitions, 1858 flow. Second operand 4 states and 3015 transitions. [2021-10-15 19:28:27,767 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 653 transitions, 1890 flow [2021-10-15 19:28:27,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 653 transitions, 1830 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:27,800 INFO L242 Difference]: Finished difference. Result has 478 places, 648 transitions, 1787 flow [2021-10-15 19:28:27,802 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=651, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=651, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1787, PETRI_PLACES=478, PETRI_TRANSITIONS=648} [2021-10-15 19:28:27,803 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -86 predicate places. [2021-10-15 19:28:27,803 INFO L470 AbstractCegarLoop]: Abstraction has has 478 places, 648 transitions, 1787 flow [2021-10-15 19:28:27,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 752.0) internal successors, (3008), 4 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:27,805 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:27,805 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] [2021-10-15 19:28:27,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-10-15 19:28:27,806 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:27,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:27,806 INFO L82 PathProgramCache]: Analyzing trace with hash -2017028468, now seen corresponding path program 1 times [2021-10-15 19:28:27,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:27,807 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209246334] [2021-10-15 19:28:27,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:27,807 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:27,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:27,887 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:27,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209246334] [2021-10-15 19:28:27,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209246334] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:27,888 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:27,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:27,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466385490] [2021-10-15 19:28:27,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:27,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:27,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:27,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:27,896 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:27,900 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 648 transitions, 1787 flow. Second operand has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:27,900 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:27,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:27,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:28,355 INFO L129 PetriNetUnfolder]: 407/1864 cut-off events. [2021-10-15 19:28:28,355 INFO L130 PetriNetUnfolder]: For 761/761 co-relation queries the response was YES. [2021-10-15 19:28:28,362 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2864 conditions, 1864 events. 407/1864 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 13955 event pairs, 0 based on Foata normal form. 8/1532 useless extension candidates. Maximal degree in co-relation 2842. Up to 305 conditions per place. [2021-10-15 19:28:28,381 INFO L132 encePairwiseOnDemand]: 785/827 looper letters, 135 selfloop transitions, 47 changer transitions 0/651 dead transitions. [2021-10-15 19:28:28,381 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 651 transitions, 2169 flow [2021-10-15 19:28:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:28,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2493 transitions. [2021-10-15 19:28:28,391 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7536275695284159 [2021-10-15 19:28:28,392 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2493 transitions. [2021-10-15 19:28:28,392 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2493 transitions. [2021-10-15 19:28:28,393 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:28,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2493 transitions. [2021-10-15 19:28:28,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 623.25) internal successors, (2493), 4 states have internal predecessors, (2493), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:28,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:28,408 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:28,408 INFO L186 Difference]: Start difference. First operand has 478 places, 648 transitions, 1787 flow. Second operand 4 states and 2493 transitions. [2021-10-15 19:28:28,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 651 transitions, 2169 flow [2021-10-15 19:28:28,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 651 transitions, 2163 flow, removed 3 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:28,436 INFO L242 Difference]: Finished difference. Result has 473 places, 635 transitions, 1877 flow [2021-10-15 19:28:28,437 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1731, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=588, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1877, PETRI_PLACES=473, PETRI_TRANSITIONS=635} [2021-10-15 19:28:28,437 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -91 predicate places. [2021-10-15 19:28:28,438 INFO L470 AbstractCegarLoop]: Abstraction has has 473 places, 635 transitions, 1877 flow [2021-10-15 19:28:28,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 583.5) internal successors, (2334), 4 states have internal predecessors, (2334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:28,439 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:28,439 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] [2021-10-15 19:28:28,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-10-15 19:28:28,440 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:28,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:28,440 INFO L82 PathProgramCache]: Analyzing trace with hash 932056973, now seen corresponding path program 1 times [2021-10-15 19:28:28,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:28,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991188453] [2021-10-15 19:28:28,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:28,441 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:28,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:28,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:28,499 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991188453] [2021-10-15 19:28:28,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991188453] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:28,500 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:28,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:28,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940848516] [2021-10-15 19:28:28,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:28,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:28,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:28,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:28,508 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:28,522 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 635 transitions, 1877 flow. Second operand has 4 states, 4 states have (on average 584.5) internal successors, (2338), 4 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:28,522 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:28,523 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:28,523 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:28,978 INFO L129 PetriNetUnfolder]: 395/1852 cut-off events. [2021-10-15 19:28:28,979 INFO L130 PetriNetUnfolder]: For 1077/1077 co-relation queries the response was YES. [2021-10-15 19:28:28,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2943 conditions, 1852 events. 395/1852 cut-off events. For 1077/1077 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13872 event pairs, 0 based on Foata normal form. 0/1524 useless extension candidates. Maximal degree in co-relation 2921. Up to 270 conditions per place. [2021-10-15 19:28:28,992 INFO L132 encePairwiseOnDemand]: 769/827 looper letters, 108 selfloop transitions, 54 changer transitions 4/635 dead transitions. [2021-10-15 19:28:28,992 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 635 transitions, 2224 flow [2021-10-15 19:28:28,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:28,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2472 transitions. [2021-10-15 19:28:29,002 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.747279322853688 [2021-10-15 19:28:29,002 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2472 transitions. [2021-10-15 19:28:29,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2472 transitions. [2021-10-15 19:28:29,004 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:29,004 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2472 transitions. [2021-10-15 19:28:29,010 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 618.0) internal successors, (2472), 4 states have internal predecessors, (2472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,018 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,018 INFO L186 Difference]: Start difference. First operand has 473 places, 635 transitions, 1877 flow. Second operand 4 states and 2472 transitions. [2021-10-15 19:28:29,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 635 transitions, 2224 flow [2021-10-15 19:28:29,034 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 475 places, 635 transitions, 2223 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:29,050 INFO L242 Difference]: Finished difference. Result has 475 places, 627 transitions, 1968 flow [2021-10-15 19:28:29,051 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1968, PETRI_PLACES=475, PETRI_TRANSITIONS=627} [2021-10-15 19:28:29,053 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -89 predicate places. [2021-10-15 19:28:29,053 INFO L470 AbstractCegarLoop]: Abstraction has has 475 places, 627 transitions, 1968 flow [2021-10-15 19:28:29,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 584.5) internal successors, (2338), 4 states have internal predecessors, (2338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,055 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:29,055 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] [2021-10-15 19:28:29,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-10-15 19:28:29,056 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:29,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:29,056 INFO L82 PathProgramCache]: Analyzing trace with hash -879197601, now seen corresponding path program 1 times [2021-10-15 19:28:29,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:29,057 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411409612] [2021-10-15 19:28:29,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:29,057 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:29,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:29,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:29,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411409612] [2021-10-15 19:28:29,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411409612] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:29,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:29,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:28:29,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181585756] [2021-10-15 19:28:29,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:28:29,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:29,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:28:29,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:28:29,136 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 729 out of 827 [2021-10-15 19:28:29,141 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 627 transitions, 1968 flow. Second operand has 5 states, 5 states have (on average 731.2) internal successors, (3656), 5 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,141 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:29,141 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 729 of 827 [2021-10-15 19:28:29,141 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:29,384 INFO L129 PetriNetUnfolder]: 395/1850 cut-off events. [2021-10-15 19:28:29,385 INFO L130 PetriNetUnfolder]: For 845/845 co-relation queries the response was YES. [2021-10-15 19:28:29,392 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2744 conditions, 1850 events. 395/1850 cut-off events. For 845/845 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13846 event pairs, 0 based on Foata normal form. 1/1527 useless extension candidates. Maximal degree in co-relation 2722. Up to 84 conditions per place. [2021-10-15 19:28:29,397 INFO L132 encePairwiseOnDemand]: 812/827 looper letters, 21 selfloop transitions, 0 changer transitions 17/631 dead transitions. [2021-10-15 19:28:29,398 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 631 transitions, 2052 flow [2021-10-15 19:28:29,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:28:29,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:28:29,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3683 transitions. [2021-10-15 19:28:29,412 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.890689238210399 [2021-10-15 19:28:29,412 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3683 transitions. [2021-10-15 19:28:29,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3683 transitions. [2021-10-15 19:28:29,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:29,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3683 transitions. [2021-10-15 19:28:29,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 736.6) internal successors, (3683), 5 states have internal predecessors, (3683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,430 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,432 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,433 INFO L186 Difference]: Start difference. First operand has 475 places, 627 transitions, 1968 flow. Second operand 5 states and 3683 transitions. [2021-10-15 19:28:29,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 631 transitions, 2052 flow [2021-10-15 19:28:29,449 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 631 transitions, 1944 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:28:29,460 INFO L242 Difference]: Finished difference. Result has 479 places, 614 transitions, 1810 flow [2021-10-15 19:28:29,461 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=472, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=627, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=627, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1810, PETRI_PLACES=479, PETRI_TRANSITIONS=614} [2021-10-15 19:28:29,462 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -85 predicate places. [2021-10-15 19:28:29,462 INFO L470 AbstractCegarLoop]: Abstraction has has 479 places, 614 transitions, 1810 flow [2021-10-15 19:28:29,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 731.2) internal successors, (3656), 5 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,464 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:29,464 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] [2021-10-15 19:28:29,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-10-15 19:28:29,465 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:29,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:29,465 INFO L82 PathProgramCache]: Analyzing trace with hash 883133755, now seen corresponding path program 1 times [2021-10-15 19:28:29,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:29,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138818150] [2021-10-15 19:28:29,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:29,466 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:29,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:29,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138818150] [2021-10-15 19:28:29,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138818150] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:29,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:29,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:29,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718703786] [2021-10-15 19:28:29,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:29,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:29,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:29,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:29,528 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:29,530 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 614 transitions, 1810 flow. Second operand has 3 states, 3 states have (on average 585.0) internal successors, (1755), 3 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,530 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:29,531 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:29,531 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:29,848 INFO L129 PetriNetUnfolder]: 385/1827 cut-off events. [2021-10-15 19:28:29,849 INFO L130 PetriNetUnfolder]: For 1058/1058 co-relation queries the response was YES. [2021-10-15 19:28:29,855 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2912 conditions, 1827 events. 385/1827 cut-off events. For 1058/1058 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13716 event pairs, 0 based on Foata normal form. 0/1501 useless extension candidates. Maximal degree in co-relation 2887. Up to 351 conditions per place. [2021-10-15 19:28:29,860 INFO L132 encePairwiseOnDemand]: 785/827 looper letters, 111 selfloop transitions, 44 changer transitions 0/609 dead transitions. [2021-10-15 19:28:29,860 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 609 transitions, 2116 flow [2021-10-15 19:28:29,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:29,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:29,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1877 transitions. [2021-10-15 19:28:29,869 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7565497783151954 [2021-10-15 19:28:29,869 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1877 transitions. [2021-10-15 19:28:29,869 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1877 transitions. [2021-10-15 19:28:29,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:29,870 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1877 transitions. [2021-10-15 19:28:29,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 625.6666666666666) internal successors, (1877), 3 states have internal predecessors, (1877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,880 INFO L186 Difference]: Start difference. First operand has 479 places, 614 transitions, 1810 flow. Second operand 3 states and 1877 transitions. [2021-10-15 19:28:29,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 609 transitions, 2116 flow [2021-10-15 19:28:29,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 609 transitions, 2106 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-10-15 19:28:29,906 INFO L242 Difference]: Finished difference. Result has 467 places, 608 transitions, 1974 flow [2021-10-15 19:28:29,907 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1784, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=606, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=562, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1974, PETRI_PLACES=467, PETRI_TRANSITIONS=608} [2021-10-15 19:28:29,908 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -97 predicate places. [2021-10-15 19:28:29,908 INFO L470 AbstractCegarLoop]: Abstraction has has 467 places, 608 transitions, 1974 flow [2021-10-15 19:28:29,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 585.0) internal successors, (1755), 3 states have internal predecessors, (1755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,909 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:29,909 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] [2021-10-15 19:28:29,909 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-10-15 19:28:29,909 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:29,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:29,910 INFO L82 PathProgramCache]: Analyzing trace with hash -191211085, now seen corresponding path program 1 times [2021-10-15 19:28:29,910 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:29,910 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154253648] [2021-10-15 19:28:29,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:29,911 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:29,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:29,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:29,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154253648] [2021-10-15 19:28:29,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154253648] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:29,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:29,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:28:29,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807232699] [2021-10-15 19:28:29,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:28:29,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:29,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:28:29,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:29,984 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 728 out of 827 [2021-10-15 19:28:29,989 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 608 transitions, 1974 flow. Second operand has 6 states, 6 states have (on average 729.8333333333334) internal successors, (4379), 6 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:29,989 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:29,989 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 728 of 827 [2021-10-15 19:28:29,990 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:30,244 INFO L129 PetriNetUnfolder]: 385/1856 cut-off events. [2021-10-15 19:28:30,245 INFO L130 PetriNetUnfolder]: For 781/781 co-relation queries the response was YES. [2021-10-15 19:28:30,251 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2776 conditions, 1856 events. 385/1856 cut-off events. For 781/781 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 14105 event pairs, 0 based on Foata normal form. 4/1552 useless extension candidates. Maximal degree in co-relation 2754. Up to 85 conditions per place. [2021-10-15 19:28:30,257 INFO L132 encePairwiseOnDemand]: 815/827 looper letters, 15 selfloop transitions, 5 changer transitions 21/617 dead transitions. [2021-10-15 19:28:30,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 617 transitions, 2056 flow [2021-10-15 19:28:30,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:28:30,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:28:30,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5856 transitions. [2021-10-15 19:28:30,275 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8851269649334945 [2021-10-15 19:28:30,275 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5856 transitions. [2021-10-15 19:28:30,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5856 transitions. [2021-10-15 19:28:30,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:30,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5856 transitions. [2021-10-15 19:28:30,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 732.0) internal successors, (5856), 8 states have internal predecessors, (5856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:30,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:30,309 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:30,310 INFO L186 Difference]: Start difference. First operand has 467 places, 608 transitions, 1974 flow. Second operand 8 states and 5856 transitions. [2021-10-15 19:28:30,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 617 transitions, 2056 flow [2021-10-15 19:28:30,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 617 transitions, 1968 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:30,338 INFO L242 Difference]: Finished difference. Result has 474 places, 593 transitions, 1850 flow [2021-10-15 19:28:30,340 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=465, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=608, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=604, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1850, PETRI_PLACES=474, PETRI_TRANSITIONS=593} [2021-10-15 19:28:30,340 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -90 predicate places. [2021-10-15 19:28:30,340 INFO L470 AbstractCegarLoop]: Abstraction has has 474 places, 593 transitions, 1850 flow [2021-10-15 19:28:30,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 729.8333333333334) internal successors, (4379), 6 states have internal predecessors, (4379), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:30,342 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:30,342 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] [2021-10-15 19:28:30,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-10-15 19:28:30,343 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:30,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:30,344 INFO L82 PathProgramCache]: Analyzing trace with hash 2144380222, now seen corresponding path program 1 times [2021-10-15 19:28:30,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:30,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113655131] [2021-10-15 19:28:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:30,345 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:30,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:30,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:30,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113655131] [2021-10-15 19:28:30,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113655131] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:30,427 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:30,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:28:30,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564801006] [2021-10-15 19:28:30,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:28:30,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:30,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:28:30,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:30,449 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 744 out of 827 [2021-10-15 19:28:30,454 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 593 transitions, 1850 flow. Second operand has 6 states, 6 states have (on average 745.8333333333334) internal successors, (4475), 6 states have internal predecessors, (4475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:30,455 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:30,455 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 744 of 827 [2021-10-15 19:28:30,455 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:30,693 INFO L129 PetriNetUnfolder]: 380/1810 cut-off events. [2021-10-15 19:28:30,694 INFO L130 PetriNetUnfolder]: For 714/714 co-relation queries the response was YES. [2021-10-15 19:28:30,700 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2653 conditions, 1810 events. 380/1810 cut-off events. For 714/714 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 13651 event pairs, 0 based on Foata normal form. 1/1504 useless extension candidates. Maximal degree in co-relation 2629. Up to 82 conditions per place. [2021-10-15 19:28:30,705 INFO L132 encePairwiseOnDemand]: 820/827 looper letters, 9 selfloop transitions, 4 changer transitions 13/595 dead transitions. [2021-10-15 19:28:30,705 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 595 transitions, 1894 flow [2021-10-15 19:28:30,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:28:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:28:30,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4483 transitions. [2021-10-15 19:28:30,720 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9034663442160419 [2021-10-15 19:28:30,720 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4483 transitions. [2021-10-15 19:28:30,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4483 transitions. [2021-10-15 19:28:30,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:30,723 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4483 transitions. [2021-10-15 19:28:30,748 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 747.1666666666666) internal successors, (4483), 6 states have internal predecessors, (4483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:30,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 827.0) internal successors, (5789), 7 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:30,761 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 827.0) internal successors, (5789), 7 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:30,761 INFO L186 Difference]: Start difference. First operand has 474 places, 593 transitions, 1850 flow. Second operand 6 states and 4483 transitions. [2021-10-15 19:28:30,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 595 transitions, 1894 flow [2021-10-15 19:28:30,778 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 595 transitions, 1880 flow, removed 5 selfloop flow, removed 5 redundant places. [2021-10-15 19:28:30,788 INFO L242 Difference]: Finished difference. Result has 461 places, 582 transitions, 1813 flow [2021-10-15 19:28:30,789 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=593, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1813, PETRI_PLACES=461, PETRI_TRANSITIONS=582} [2021-10-15 19:28:30,789 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -103 predicate places. [2021-10-15 19:28:30,790 INFO L470 AbstractCegarLoop]: Abstraction has has 461 places, 582 transitions, 1813 flow [2021-10-15 19:28:30,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 745.8333333333334) internal successors, (4475), 6 states have internal predecessors, (4475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:30,792 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:30,792 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] [2021-10-15 19:28:30,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-10-15 19:28:30,792 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:30,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:30,793 INFO L82 PathProgramCache]: Analyzing trace with hash -486770995, now seen corresponding path program 1 times [2021-10-15 19:28:30,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:30,793 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716908451] [2021-10-15 19:28:30,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:30,794 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:30,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:30,837 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:30,837 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:30,837 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716908451] [2021-10-15 19:28:30,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716908451] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:30,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:30,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:30,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435944585] [2021-10-15 19:28:30,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:30,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:30,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:30,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:30,844 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 742 out of 827 [2021-10-15 19:28:30,858 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 582 transitions, 1813 flow. Second operand has 3 states, 3 states have (on average 744.0) internal successors, (2232), 3 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:30,870 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:30,870 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 742 of 827 [2021-10-15 19:28:30,870 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:31,012 INFO L129 PetriNetUnfolder]: 271/1384 cut-off events. [2021-10-15 19:28:31,012 INFO L130 PetriNetUnfolder]: For 515/515 co-relation queries the response was YES. [2021-10-15 19:28:31,017 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2022 conditions, 1384 events. 271/1384 cut-off events. For 515/515 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 9832 event pairs, 0 based on Foata normal form. 2/1172 useless extension candidates. Maximal degree in co-relation 2001. Up to 62 conditions per place. [2021-10-15 19:28:31,021 INFO L132 encePairwiseOnDemand]: 822/827 looper letters, 15 selfloop transitions, 2 changer transitions 0/578 dead transitions. [2021-10-15 19:28:31,021 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 578 transitions, 1831 flow [2021-10-15 19:28:31,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:31,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:31,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2246 transitions. [2021-10-15 19:28:31,025 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9052801289802499 [2021-10-15 19:28:31,026 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2246 transitions. [2021-10-15 19:28:31,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2246 transitions. [2021-10-15 19:28:31,027 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:31,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2246 transitions. [2021-10-15 19:28:31,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 748.6666666666666) internal successors, (2246), 3 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,037 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,038 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,039 INFO L186 Difference]: Start difference. First operand has 461 places, 582 transitions, 1813 flow. Second operand 3 states and 2246 transitions. [2021-10-15 19:28:31,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 578 transitions, 1831 flow [2021-10-15 19:28:31,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 578 transitions, 1813 flow, removed 2 selfloop flow, removed 5 redundant places. [2021-10-15 19:28:31,060 INFO L242 Difference]: Finished difference. Result has 447 places, 578 transitions, 1783 flow [2021-10-15 19:28:31,061 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1779, PETRI_DIFFERENCE_MINUEND_PLACES=445, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=578, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=576, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1783, PETRI_PLACES=447, PETRI_TRANSITIONS=578} [2021-10-15 19:28:31,062 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -117 predicate places. [2021-10-15 19:28:31,062 INFO L470 AbstractCegarLoop]: Abstraction has has 447 places, 578 transitions, 1783 flow [2021-10-15 19:28:31,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 744.0) internal successors, (2232), 3 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,063 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:31,063 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] [2021-10-15 19:28:31,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-10-15 19:28:31,065 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:31,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:31,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1516001350, now seen corresponding path program 1 times [2021-10-15 19:28:31,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:31,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118784760] [2021-10-15 19:28:31,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:31,066 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:31,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:31,121 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:31,121 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118784760] [2021-10-15 19:28:31,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118784760] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:31,122 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:31,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:31,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935176671] [2021-10-15 19:28:31,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:31,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:31,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:31,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:31,130 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:31,132 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 578 transitions, 1783 flow. Second operand has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,133 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:31,133 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:31,133 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:31,410 INFO L129 PetriNetUnfolder]: 239/1246 cut-off events. [2021-10-15 19:28:31,410 INFO L130 PetriNetUnfolder]: For 685/685 co-relation queries the response was YES. [2021-10-15 19:28:31,414 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1987 conditions, 1246 events. 239/1246 cut-off events. For 685/685 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 8497 event pairs, 0 based on Foata normal form. 12/1052 useless extension candidates. Maximal degree in co-relation 1968. Up to 215 conditions per place. [2021-10-15 19:28:31,419 INFO L132 encePairwiseOnDemand]: 801/827 looper letters, 109 selfloop transitions, 19 changer transitions 0/554 dead transitions. [2021-10-15 19:28:31,419 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 442 places, 554 transitions, 1903 flow [2021-10-15 19:28:31,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:31,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2433 transitions. [2021-10-15 19:28:31,424 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7354897218863361 [2021-10-15 19:28:31,424 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2433 transitions. [2021-10-15 19:28:31,424 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2433 transitions. [2021-10-15 19:28:31,426 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:31,426 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2433 transitions. [2021-10-15 19:28:31,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 608.25) internal successors, (2433), 4 states have internal predecessors, (2433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,480 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,480 INFO L186 Difference]: Start difference. First operand has 447 places, 578 transitions, 1783 flow. Second operand 4 states and 2433 transitions. [2021-10-15 19:28:31,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 442 places, 554 transitions, 1903 flow [2021-10-15 19:28:31,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 441 places, 554 transitions, 1899 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:31,504 INFO L242 Difference]: Finished difference. Result has 441 places, 554 transitions, 1681 flow [2021-10-15 19:28:31,505 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=535, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1681, PETRI_PLACES=441, PETRI_TRANSITIONS=554} [2021-10-15 19:28:31,505 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -123 predicate places. [2021-10-15 19:28:31,506 INFO L470 AbstractCegarLoop]: Abstraction has has 441 places, 554 transitions, 1681 flow [2021-10-15 19:28:31,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 585.0) internal successors, (2340), 4 states have internal predecessors, (2340), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:31,507 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] [2021-10-15 19:28:31,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-10-15 19:28:31,508 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:31,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:31,508 INFO L82 PathProgramCache]: Analyzing trace with hash -56726392, now seen corresponding path program 1 times [2021-10-15 19:28:31,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:31,509 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555634458] [2021-10-15 19:28:31,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:31,509 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:31,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:31,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:31,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:31,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555634458] [2021-10-15 19:28:31,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555634458] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:31,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:31,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:31,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634537899] [2021-10-15 19:28:31,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:31,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:31,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:31,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:31,554 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:31,556 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 554 transitions, 1681 flow. Second operand has 3 states, 3 states have (on average 586.0) internal successors, (1758), 3 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,556 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:31,556 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:31,557 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:31,806 INFO L129 PetriNetUnfolder]: 263/1346 cut-off events. [2021-10-15 19:28:31,807 INFO L130 PetriNetUnfolder]: For 796/796 co-relation queries the response was YES. [2021-10-15 19:28:31,811 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2118 conditions, 1346 events. 263/1346 cut-off events. For 796/796 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 9010 event pairs, 0 based on Foata normal form. 4/1115 useless extension candidates. Maximal degree in co-relation 2099. Up to 208 conditions per place. [2021-10-15 19:28:31,815 INFO L132 encePairwiseOnDemand]: 811/827 looper letters, 123 selfloop transitions, 18 changer transitions 10/571 dead transitions. [2021-10-15 19:28:31,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 571 transitions, 2071 flow [2021-10-15 19:28:31,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:31,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:31,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1858 transitions. [2021-10-15 19:28:31,820 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7488915759774285 [2021-10-15 19:28:31,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1858 transitions. [2021-10-15 19:28:31,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1858 transitions. [2021-10-15 19:28:31,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:31,821 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1858 transitions. [2021-10-15 19:28:31,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 619.3333333333334) internal successors, (1858), 3 states have internal predecessors, (1858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,831 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,832 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,832 INFO L186 Difference]: Start difference. First operand has 441 places, 554 transitions, 1681 flow. Second operand 3 states and 1858 transitions. [2021-10-15 19:28:31,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 571 transitions, 2071 flow [2021-10-15 19:28:31,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 571 transitions, 2033 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:28:31,856 INFO L242 Difference]: Finished difference. Result has 442 places, 552 transitions, 1759 flow [2021-10-15 19:28:31,858 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1643, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=554, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=536, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1759, PETRI_PLACES=442, PETRI_TRANSITIONS=552} [2021-10-15 19:28:31,858 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -122 predicate places. [2021-10-15 19:28:31,858 INFO L470 AbstractCegarLoop]: Abstraction has has 442 places, 552 transitions, 1759 flow [2021-10-15 19:28:31,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 586.0) internal successors, (1758), 3 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,860 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:31,860 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] [2021-10-15 19:28:31,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-10-15 19:28:31,860 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:31,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:31,861 INFO L82 PathProgramCache]: Analyzing trace with hash -353842307, now seen corresponding path program 1 times [2021-10-15 19:28:31,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:31,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782453221] [2021-10-15 19:28:31,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:31,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:31,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:31,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782453221] [2021-10-15 19:28:31,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782453221] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:31,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:31,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:28:31,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312367276] [2021-10-15 19:28:31,916 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:28:31,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:31,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:28:31,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:28:31,924 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 737 out of 827 [2021-10-15 19:28:31,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 552 transitions, 1759 flow. Second operand has 5 states, 5 states have (on average 738.4) internal successors, (3692), 5 states have internal predecessors, (3692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:31,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:31,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 737 of 827 [2021-10-15 19:28:31,930 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:32,070 INFO L129 PetriNetUnfolder]: 242/1240 cut-off events. [2021-10-15 19:28:32,070 INFO L130 PetriNetUnfolder]: For 541/541 co-relation queries the response was YES. [2021-10-15 19:28:32,074 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1789 conditions, 1240 events. 242/1240 cut-off events. For 541/541 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 8011 event pairs, 0 based on Foata normal form. 1/1024 useless extension candidates. Maximal degree in co-relation 1769. Up to 58 conditions per place. [2021-10-15 19:28:32,077 INFO L132 encePairwiseOnDemand]: 822/827 looper letters, 15 selfloop transitions, 1 changer transitions 3/555 dead transitions. [2021-10-15 19:28:32,077 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 555 transitions, 1809 flow [2021-10-15 19:28:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:28:32,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:28:32,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3704 transitions. [2021-10-15 19:28:32,082 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8957678355501814 [2021-10-15 19:28:32,082 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3704 transitions. [2021-10-15 19:28:32,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3704 transitions. [2021-10-15 19:28:32,084 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:32,084 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3704 transitions. [2021-10-15 19:28:32,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 740.8) internal successors, (3704), 5 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:32,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:32,099 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:32,099 INFO L186 Difference]: Start difference. First operand has 442 places, 552 transitions, 1759 flow. Second operand 5 states and 3704 transitions. [2021-10-15 19:28:32,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 441 places, 555 transitions, 1809 flow [2021-10-15 19:28:32,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 437 places, 555 transitions, 1766 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-15 19:28:32,119 INFO L242 Difference]: Finished difference. Result has 440 places, 551 transitions, 1719 flow [2021-10-15 19:28:32,120 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1716, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=552, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=551, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1719, PETRI_PLACES=440, PETRI_TRANSITIONS=551} [2021-10-15 19:28:32,120 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -124 predicate places. [2021-10-15 19:28:32,120 INFO L470 AbstractCegarLoop]: Abstraction has has 440 places, 551 transitions, 1719 flow [2021-10-15 19:28:32,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 738.4) internal successors, (3692), 5 states have internal predecessors, (3692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:32,122 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:32,122 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] [2021-10-15 19:28:32,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-10-15 19:28:32,123 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:32,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:32,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1741061514, now seen corresponding path program 1 times [2021-10-15 19:28:32,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:32,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021629394] [2021-10-15 19:28:32,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:32,124 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:32,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:32,181 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:32,182 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021629394] [2021-10-15 19:28:32,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021629394] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:32,182 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:32,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:28:32,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809035248] [2021-10-15 19:28:32,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:28:32,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:32,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:28:32,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:32,190 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 640 out of 827 [2021-10-15 19:28:32,193 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 551 transitions, 1719 flow. Second operand has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:32,193 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:32,193 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 640 of 827 [2021-10-15 19:28:32,194 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:32,614 INFO L129 PetriNetUnfolder]: 374/1860 cut-off events. [2021-10-15 19:28:32,615 INFO L130 PetriNetUnfolder]: For 899/899 co-relation queries the response was YES. [2021-10-15 19:28:32,621 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2811 conditions, 1860 events. 374/1860 cut-off events. For 899/899 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13724 event pairs, 0 based on Foata normal form. 5/1538 useless extension candidates. Maximal degree in co-relation 2790. Up to 127 conditions per place. [2021-10-15 19:28:32,627 INFO L132 encePairwiseOnDemand]: 795/827 looper letters, 127 selfloop transitions, 30 changer transitions 0/604 dead transitions. [2021-10-15 19:28:32,628 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 604 transitions, 2245 flow [2021-10-15 19:28:32,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:28:32,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:28:32,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4623 transitions. [2021-10-15 19:28:32,637 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7985835204698566 [2021-10-15 19:28:32,637 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4623 transitions. [2021-10-15 19:28:32,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4623 transitions. [2021-10-15 19:28:32,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:32,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4623 transitions. [2021-10-15 19:28:32,652 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 660.4285714285714) internal successors, (4623), 7 states have internal predecessors, (4623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:32,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:32,664 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:32,664 INFO L186 Difference]: Start difference. First operand has 440 places, 551 transitions, 1719 flow. Second operand 7 states and 4623 transitions. [2021-10-15 19:28:32,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 604 transitions, 2245 flow [2021-10-15 19:28:32,689 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 604 transitions, 2237 flow, removed 3 selfloop flow, removed 4 redundant places. [2021-10-15 19:28:32,701 INFO L242 Difference]: Finished difference. Result has 444 places, 567 transitions, 1900 flow [2021-10-15 19:28:32,702 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1711, PETRI_DIFFERENCE_MINUEND_PLACES=434, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=522, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1900, PETRI_PLACES=444, PETRI_TRANSITIONS=567} [2021-10-15 19:28:32,703 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -120 predicate places. [2021-10-15 19:28:32,703 INFO L470 AbstractCegarLoop]: Abstraction has has 444 places, 567 transitions, 1900 flow [2021-10-15 19:28:32,704 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 642.0) internal successors, (3852), 6 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:32,704 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:32,705 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] [2021-10-15 19:28:32,705 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-10-15 19:28:32,705 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:32,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:32,706 INFO L82 PathProgramCache]: Analyzing trace with hash -1741049598, now seen corresponding path program 1 times [2021-10-15 19:28:32,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:32,706 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786562787] [2021-10-15 19:28:32,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:32,707 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:32,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:32,770 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:32,771 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786562787] [2021-10-15 19:28:32,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786562787] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:32,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:32,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:28:32,772 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393725963] [2021-10-15 19:28:32,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:28:32,772 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:32,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:28:32,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:32,781 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 638 out of 827 [2021-10-15 19:28:32,785 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 567 transitions, 1900 flow. Second operand has 6 states, 6 states have (on average 640.3333333333334) internal successors, (3842), 6 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:32,785 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:32,785 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 638 of 827 [2021-10-15 19:28:32,785 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:33,170 INFO L129 PetriNetUnfolder]: 373/1868 cut-off events. [2021-10-15 19:28:33,170 INFO L130 PetriNetUnfolder]: For 1031/1031 co-relation queries the response was YES. [2021-10-15 19:28:33,177 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2983 conditions, 1868 events. 373/1868 cut-off events. For 1031/1031 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 13827 event pairs, 0 based on Foata normal form. 2/1543 useless extension candidates. Maximal degree in co-relation 2961. Up to 115 conditions per place. [2021-10-15 19:28:33,183 INFO L132 encePairwiseOnDemand]: 791/827 looper letters, 67 selfloop transitions, 54 changer transitions 9/573 dead transitions. [2021-10-15 19:28:33,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 573 transitions, 2176 flow [2021-10-15 19:28:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:28:33,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:28:33,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4570 transitions. [2021-10-15 19:28:33,190 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7894282259457592 [2021-10-15 19:28:33,190 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4570 transitions. [2021-10-15 19:28:33,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4570 transitions. [2021-10-15 19:28:33,193 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:33,193 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4570 transitions. [2021-10-15 19:28:33,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 652.8571428571429) internal successors, (4570), 7 states have internal predecessors, (4570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:33,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:33,212 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:33,212 INFO L186 Difference]: Start difference. First operand has 444 places, 567 transitions, 1900 flow. Second operand 7 states and 4570 transitions. [2021-10-15 19:28:33,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 573 transitions, 2176 flow [2021-10-15 19:28:33,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 573 transitions, 2171 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:33,241 INFO L242 Difference]: Finished difference. Result has 450 places, 558 transitions, 1962 flow [2021-10-15 19:28:33,243 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1896, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=567, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=513, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1962, PETRI_PLACES=450, PETRI_TRANSITIONS=558} [2021-10-15 19:28:33,246 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -114 predicate places. [2021-10-15 19:28:33,246 INFO L470 AbstractCegarLoop]: Abstraction has has 450 places, 558 transitions, 1962 flow [2021-10-15 19:28:33,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 640.3333333333334) internal successors, (3842), 6 states have internal predecessors, (3842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:33,248 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:33,248 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] [2021-10-15 19:28:33,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-10-15 19:28:33,250 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:33,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:33,250 INFO L82 PathProgramCache]: Analyzing trace with hash 749897277, now seen corresponding path program 1 times [2021-10-15 19:28:33,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:33,251 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181169821] [2021-10-15 19:28:33,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:33,251 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:33,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:33,325 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:33,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:33,326 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181169821] [2021-10-15 19:28:33,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181169821] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:33,326 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:33,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:33,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737398048] [2021-10-15 19:28:33,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:33,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:33,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:33,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:33,333 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:33,335 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 558 transitions, 1962 flow. Second operand has 4 states, 4 states have (on average 584.75) internal successors, (2339), 4 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:33,336 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:33,336 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:33,336 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:33,713 INFO L129 PetriNetUnfolder]: 372/1824 cut-off events. [2021-10-15 19:28:33,713 INFO L130 PetriNetUnfolder]: For 1459/1459 co-relation queries the response was YES. [2021-10-15 19:28:33,719 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3065 conditions, 1824 events. 372/1824 cut-off events. For 1459/1459 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 13304 event pairs, 0 based on Foata normal form. 7/1506 useless extension candidates. Maximal degree in co-relation 3042. Up to 284 conditions per place. [2021-10-15 19:28:33,724 INFO L132 encePairwiseOnDemand]: 809/827 looper letters, 114 selfloop transitions, 18 changer transitions 37/566 dead transitions. [2021-10-15 19:28:33,724 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 566 transitions, 2272 flow [2021-10-15 19:28:33,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:33,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:33,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2435 transitions. [2021-10-15 19:28:33,729 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7360943168077388 [2021-10-15 19:28:33,729 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2435 transitions. [2021-10-15 19:28:33,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2435 transitions. [2021-10-15 19:28:33,731 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:33,731 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2435 transitions. [2021-10-15 19:28:33,736 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 608.75) internal successors, (2435), 4 states have internal predecessors, (2435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:33,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:33,742 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:33,742 INFO L186 Difference]: Start difference. First operand has 450 places, 558 transitions, 1962 flow. Second operand 4 states and 2435 transitions. [2021-10-15 19:28:33,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 566 transitions, 2272 flow [2021-10-15 19:28:33,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 443 places, 566 transitions, 2137 flow, removed 6 selfloop flow, removed 7 redundant places. [2021-10-15 19:28:33,770 INFO L242 Difference]: Finished difference. Result has 445 places, 522 transitions, 1812 flow [2021-10-15 19:28:33,771 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1827, PETRI_DIFFERENCE_MINUEND_PLACES=440, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=558, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=540, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1812, PETRI_PLACES=445, PETRI_TRANSITIONS=522} [2021-10-15 19:28:33,772 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -119 predicate places. [2021-10-15 19:28:33,772 INFO L470 AbstractCegarLoop]: Abstraction has has 445 places, 522 transitions, 1812 flow [2021-10-15 19:28:33,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 584.75) internal successors, (2339), 4 states have internal predecessors, (2339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:33,773 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:33,773 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] [2021-10-15 19:28:33,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-10-15 19:28:33,774 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:33,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:33,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1199476607, now seen corresponding path program 1 times [2021-10-15 19:28:33,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:33,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783243560] [2021-10-15 19:28:33,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:33,778 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:33,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:33,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:33,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:33,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783243560] [2021-10-15 19:28:33,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783243560] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:33,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:33,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:28:33,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988382286] [2021-10-15 19:28:33,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:28:33,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:33,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:28:33,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:28:33,842 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 659 out of 827 [2021-10-15 19:28:33,846 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 522 transitions, 1812 flow. Second operand has 5 states, 5 states have (on average 660.4) internal successors, (3302), 5 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:33,846 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:33,846 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 659 of 827 [2021-10-15 19:28:33,846 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:34,258 INFO L129 PetriNetUnfolder]: 556/2499 cut-off events. [2021-10-15 19:28:34,259 INFO L130 PetriNetUnfolder]: For 1679/1679 co-relation queries the response was YES. [2021-10-15 19:28:34,266 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3771 conditions, 2499 events. 556/2499 cut-off events. For 1679/1679 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 18983 event pairs, 0 based on Foata normal form. 0/2002 useless extension candidates. Maximal degree in co-relation 3748. Up to 119 conditions per place. [2021-10-15 19:28:34,274 INFO L132 encePairwiseOnDemand]: 806/827 looper letters, 119 selfloop transitions, 22 changer transitions 0/571 dead transitions. [2021-10-15 19:28:34,274 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 571 transitions, 2411 flow [2021-10-15 19:28:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:28:34,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:28:34,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4734 transitions. [2021-10-15 19:28:34,282 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8177578165486267 [2021-10-15 19:28:34,282 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4734 transitions. [2021-10-15 19:28:34,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4734 transitions. [2021-10-15 19:28:34,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:34,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4734 transitions. [2021-10-15 19:28:34,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 676.2857142857143) internal successors, (4734), 7 states have internal predecessors, (4734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:34,301 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:34,303 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:34,303 INFO L186 Difference]: Start difference. First operand has 445 places, 522 transitions, 1812 flow. Second operand 7 states and 4734 transitions. [2021-10-15 19:28:34,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 571 transitions, 2411 flow [2021-10-15 19:28:34,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 571 transitions, 2406 flow, removed 1 selfloop flow, removed 3 redundant places. [2021-10-15 19:28:34,338 INFO L242 Difference]: Finished difference. Result has 418 places, 525 transitions, 1881 flow [2021-10-15 19:28:34,339 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1807, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=522, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1881, PETRI_PLACES=418, PETRI_TRANSITIONS=525} [2021-10-15 19:28:34,340 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -146 predicate places. [2021-10-15 19:28:34,340 INFO L470 AbstractCegarLoop]: Abstraction has has 418 places, 525 transitions, 1881 flow [2021-10-15 19:28:34,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 660.4) internal successors, (3302), 5 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:34,341 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:34,341 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] [2021-10-15 19:28:34,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-10-15 19:28:34,342 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:34,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:34,342 INFO L82 PathProgramCache]: Analyzing trace with hash -452503205, now seen corresponding path program 1 times [2021-10-15 19:28:34,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:34,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735431071] [2021-10-15 19:28:34,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:34,343 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:34,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:34,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:34,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:34,410 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735431071] [2021-10-15 19:28:34,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735431071] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:34,411 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:34,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:34,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480118133] [2021-10-15 19:28:34,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:34,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:34,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:34,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:34,417 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 749 out of 827 [2021-10-15 19:28:34,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 525 transitions, 1881 flow. Second operand has 3 states, 3 states have (on average 751.0) internal successors, (2253), 3 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:34,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:34,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 749 of 827 [2021-10-15 19:28:34,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:34,694 INFO L129 PetriNetUnfolder]: 595/2736 cut-off events. [2021-10-15 19:28:34,694 INFO L130 PetriNetUnfolder]: For 1661/1661 co-relation queries the response was YES. [2021-10-15 19:28:34,702 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3845 conditions, 2736 events. 595/2736 cut-off events. For 1661/1661 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 21461 event pairs, 0 based on Foata normal form. 11/2199 useless extension candidates. Maximal degree in co-relation 3821. Up to 125 conditions per place. [2021-10-15 19:28:34,708 INFO L132 encePairwiseOnDemand]: 818/827 looper letters, 5 selfloop transitions, 7 changer transitions 0/510 dead transitions. [2021-10-15 19:28:34,708 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 510 transitions, 1827 flow [2021-10-15 19:28:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:34,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:34,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2261 transitions. [2021-10-15 19:28:34,711 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9113260781942765 [2021-10-15 19:28:34,711 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2261 transitions. [2021-10-15 19:28:34,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2261 transitions. [2021-10-15 19:28:34,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:34,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2261 transitions. [2021-10-15 19:28:34,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 753.6666666666666) internal successors, (2261), 3 states have internal predecessors, (2261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:34,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:34,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:34,720 INFO L186 Difference]: Start difference. First operand has 418 places, 525 transitions, 1881 flow. Second operand 3 states and 2261 transitions. [2021-10-15 19:28:34,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 510 transitions, 1827 flow [2021-10-15 19:28:34,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 510 transitions, 1801 flow, removed 3 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:34,748 INFO L242 Difference]: Finished difference. Result has 414 places, 510 transitions, 1800 flow [2021-10-15 19:28:34,749 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1775, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=509, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1800, PETRI_PLACES=414, PETRI_TRANSITIONS=510} [2021-10-15 19:28:34,749 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -150 predicate places. [2021-10-15 19:28:34,750 INFO L470 AbstractCegarLoop]: Abstraction has has 414 places, 510 transitions, 1800 flow [2021-10-15 19:28:34,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 751.0) internal successors, (2253), 3 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:34,750 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:34,750 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] [2021-10-15 19:28:34,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-10-15 19:28:34,751 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:34,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:34,751 INFO L82 PathProgramCache]: Analyzing trace with hash 110781942, now seen corresponding path program 1 times [2021-10-15 19:28:34,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:34,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774886251] [2021-10-15 19:28:34,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:34,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:34,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:34,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:34,823 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774886251] [2021-10-15 19:28:34,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774886251] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:34,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:34,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:34,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646113996] [2021-10-15 19:28:34,824 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:34,824 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:34,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:34,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:34,829 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 747 out of 827 [2021-10-15 19:28:34,833 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 510 transitions, 1800 flow. Second operand has 4 states, 4 states have (on average 747.75) internal successors, (2991), 4 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:34,833 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:34,834 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 747 of 827 [2021-10-15 19:28:34,834 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:35,125 INFO L129 PetriNetUnfolder]: 594/3017 cut-off events. [2021-10-15 19:28:35,126 INFO L130 PetriNetUnfolder]: For 1762/1762 co-relation queries the response was YES. [2021-10-15 19:28:35,135 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 3017 events. 594/3017 cut-off events. For 1762/1762 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 25131 event pairs, 0 based on Foata normal form. 0/2467 useless extension candidates. Maximal degree in co-relation 4272. Up to 133 conditions per place. [2021-10-15 19:28:35,142 INFO L132 encePairwiseOnDemand]: 812/827 looper letters, 10 selfloop transitions, 11 changer transitions 0/512 dead transitions. [2021-10-15 19:28:35,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 417 places, 512 transitions, 1846 flow [2021-10-15 19:28:35,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:35,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:35,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3014 transitions. [2021-10-15 19:28:35,148 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9111245465538089 [2021-10-15 19:28:35,148 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3014 transitions. [2021-10-15 19:28:35,148 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3014 transitions. [2021-10-15 19:28:35,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:35,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3014 transitions. [2021-10-15 19:28:35,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 753.5) internal successors, (3014), 4 states have internal predecessors, (3014), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:35,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:35,162 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:35,162 INFO L186 Difference]: Start difference. First operand has 414 places, 510 transitions, 1800 flow. Second operand 4 states and 3014 transitions. [2021-10-15 19:28:35,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 417 places, 512 transitions, 1846 flow [2021-10-15 19:28:35,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 512 transitions, 1839 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:35,200 INFO L242 Difference]: Finished difference. Result has 419 places, 512 transitions, 1853 flow [2021-10-15 19:28:35,201 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=507, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=497, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1853, PETRI_PLACES=419, PETRI_TRANSITIONS=512} [2021-10-15 19:28:35,201 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -145 predicate places. [2021-10-15 19:28:35,201 INFO L470 AbstractCegarLoop]: Abstraction has has 419 places, 512 transitions, 1853 flow [2021-10-15 19:28:35,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 747.75) internal successors, (2991), 4 states have internal predecessors, (2991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:35,202 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:35,203 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] [2021-10-15 19:28:35,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-10-15 19:28:35,203 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:35,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:35,204 INFO L82 PathProgramCache]: Analyzing trace with hash 48742328, now seen corresponding path program 1 times [2021-10-15 19:28:35,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:35,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609070308] [2021-10-15 19:28:35,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:35,204 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:35,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:35,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:35,314 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:35,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609070308] [2021-10-15 19:28:35,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609070308] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:35,315 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:35,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:35,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958389219] [2021-10-15 19:28:35,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:35,316 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:35,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:35,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:35,323 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 706 out of 827 [2021-10-15 19:28:35,326 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 419 places, 512 transitions, 1853 flow. Second operand has 4 states, 4 states have (on average 707.25) internal successors, (2829), 4 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:35,326 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:35,326 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 706 of 827 [2021-10-15 19:28:35,326 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:35,638 INFO L129 PetriNetUnfolder]: 437/2458 cut-off events. [2021-10-15 19:28:35,638 INFO L130 PetriNetUnfolder]: For 1228/1228 co-relation queries the response was YES. [2021-10-15 19:28:35,650 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3576 conditions, 2458 events. 437/2458 cut-off events. For 1228/1228 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 19662 event pairs, 0 based on Foata normal form. 0/2062 useless extension candidates. Maximal degree in co-relation 3548. Up to 95 conditions per place. [2021-10-15 19:28:35,655 INFO L132 encePairwiseOnDemand]: 816/827 looper letters, 13 selfloop transitions, 10 changer transitions 0/491 dead transitions. [2021-10-15 19:28:35,655 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 491 transitions, 1728 flow [2021-10-15 19:28:35,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:35,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:35,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2848 transitions. [2021-10-15 19:28:35,660 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8609431680773881 [2021-10-15 19:28:35,661 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2848 transitions. [2021-10-15 19:28:35,661 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2848 transitions. [2021-10-15 19:28:35,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:35,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2848 transitions. [2021-10-15 19:28:35,668 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 712.0) internal successors, (2848), 4 states have internal predecessors, (2848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:35,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:35,674 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:35,674 INFO L186 Difference]: Start difference. First operand has 419 places, 512 transitions, 1853 flow. Second operand 4 states and 2848 transitions. [2021-10-15 19:28:35,674 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 491 transitions, 1728 flow [2021-10-15 19:28:35,695 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 416 places, 491 transitions, 1655 flow, removed 14 selfloop flow, removed 3 redundant places. [2021-10-15 19:28:35,703 INFO L242 Difference]: Finished difference. Result has 416 places, 491 transitions, 1629 flow [2021-10-15 19:28:35,704 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=481, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1629, PETRI_PLACES=416, PETRI_TRANSITIONS=491} [2021-10-15 19:28:35,705 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -148 predicate places. [2021-10-15 19:28:35,705 INFO L470 AbstractCegarLoop]: Abstraction has has 416 places, 491 transitions, 1629 flow [2021-10-15 19:28:35,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 707.25) internal successors, (2829), 4 states have internal predecessors, (2829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:35,706 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:35,706 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] [2021-10-15 19:28:35,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-10-15 19:28:35,706 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:35,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:35,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1515814519, now seen corresponding path program 1 times [2021-10-15 19:28:35,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:35,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010205539] [2021-10-15 19:28:35,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:35,708 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:35,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:35,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:35,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:35,753 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010205539] [2021-10-15 19:28:35,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010205539] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:35,754 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:35,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:28:35,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132704896] [2021-10-15 19:28:35,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:28:35,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:35,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:28:35,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:28:35,763 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 739 out of 827 [2021-10-15 19:28:35,766 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 491 transitions, 1629 flow. Second operand has 5 states, 5 states have (on average 741.0) internal successors, (3705), 5 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:35,767 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:35,767 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 739 of 827 [2021-10-15 19:28:35,767 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:36,072 INFO L129 PetriNetUnfolder]: 437/2438 cut-off events. [2021-10-15 19:28:36,073 INFO L130 PetriNetUnfolder]: For 1109/1109 co-relation queries the response was YES. [2021-10-15 19:28:36,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3621 conditions, 2438 events. 437/2438 cut-off events. For 1109/1109 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 19400 event pairs, 0 based on Foata normal form. 10/2044 useless extension candidates. Maximal degree in co-relation 3593. Up to 151 conditions per place. [2021-10-15 19:28:36,090 INFO L132 encePairwiseOnDemand]: 823/827 looper letters, 22 selfloop transitions, 0 changer transitions 20/494 dead transitions. [2021-10-15 19:28:36,090 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 494 transitions, 1692 flow [2021-10-15 19:28:36,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:28:36,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:28:36,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3721 transitions. [2021-10-15 19:28:36,096 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8998790810157195 [2021-10-15 19:28:36,096 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3721 transitions. [2021-10-15 19:28:36,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3721 transitions. [2021-10-15 19:28:36,099 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:36,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3721 transitions. [2021-10-15 19:28:36,106 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 744.2) internal successors, (3721), 5 states have internal predecessors, (3721), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:36,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:36,112 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:36,113 INFO L186 Difference]: Start difference. First operand has 416 places, 491 transitions, 1629 flow. Second operand 5 states and 3721 transitions. [2021-10-15 19:28:36,113 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 494 transitions, 1692 flow [2021-10-15 19:28:36,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 494 transitions, 1672 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:28:36,139 INFO L242 Difference]: Finished difference. Result has 420 places, 474 transitions, 1551 flow [2021-10-15 19:28:36,140 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1609, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=491, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=491, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1551, PETRI_PLACES=420, PETRI_TRANSITIONS=474} [2021-10-15 19:28:36,140 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -144 predicate places. [2021-10-15 19:28:36,141 INFO L470 AbstractCegarLoop]: Abstraction has has 420 places, 474 transitions, 1551 flow [2021-10-15 19:28:36,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 741.0) internal successors, (3705), 5 states have internal predecessors, (3705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:36,142 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:36,142 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:36,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-10-15 19:28:36,143 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:36,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:36,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1967560492, now seen corresponding path program 1 times [2021-10-15 19:28:36,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:36,144 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640153878] [2021-10-15 19:28:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:36,144 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:36,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:36,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:36,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640153878] [2021-10-15 19:28:36,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640153878] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:36,204 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:36,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:36,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613559899] [2021-10-15 19:28:36,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:36,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:36,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:36,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:36,212 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:36,214 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 474 transitions, 1551 flow. Second operand has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:36,214 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:36,214 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:36,215 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:36,579 INFO L129 PetriNetUnfolder]: 324/1822 cut-off events. [2021-10-15 19:28:36,579 INFO L130 PetriNetUnfolder]: For 1046/1046 co-relation queries the response was YES. [2021-10-15 19:28:36,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2824 conditions, 1822 events. 324/1822 cut-off events. For 1046/1046 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 12916 event pairs, 0 based on Foata normal form. 0/1522 useless extension candidates. Maximal degree in co-relation 2793. Up to 212 conditions per place. [2021-10-15 19:28:36,590 INFO L132 encePairwiseOnDemand]: 798/827 looper letters, 65 selfloop transitions, 29 changer transitions 0/471 dead transitions. [2021-10-15 19:28:36,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 407 places, 471 transitions, 1733 flow [2021-10-15 19:28:36,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:36,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2408 transitions. [2021-10-15 19:28:36,596 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.727932285368803 [2021-10-15 19:28:36,596 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2408 transitions. [2021-10-15 19:28:36,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2408 transitions. [2021-10-15 19:28:36,598 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:36,598 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2408 transitions. [2021-10-15 19:28:36,604 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 602.0) internal successors, (2408), 4 states have internal predecessors, (2408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:36,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:36,610 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:36,610 INFO L186 Difference]: Start difference. First operand has 420 places, 474 transitions, 1551 flow. Second operand 4 states and 2408 transitions. [2021-10-15 19:28:36,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 407 places, 471 transitions, 1733 flow [2021-10-15 19:28:36,626 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 471 transitions, 1721 flow, removed 5 selfloop flow, removed 6 redundant places. [2021-10-15 19:28:36,635 INFO L242 Difference]: Finished difference. Result has 401 places, 471 transitions, 1591 flow [2021-10-15 19:28:36,636 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=442, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1591, PETRI_PLACES=401, PETRI_TRANSITIONS=471} [2021-10-15 19:28:36,637 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -163 predicate places. [2021-10-15 19:28:36,637 INFO L470 AbstractCegarLoop]: Abstraction has has 401 places, 471 transitions, 1591 flow [2021-10-15 19:28:36,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 584.0) internal successors, (2336), 4 states have internal predecessors, (2336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:36,638 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:36,638 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] [2021-10-15 19:28:36,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-10-15 19:28:36,638 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:36,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:36,639 INFO L82 PathProgramCache]: Analyzing trace with hash -2061498781, now seen corresponding path program 1 times [2021-10-15 19:28:36,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:36,640 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475403895] [2021-10-15 19:28:36,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:36,640 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:36,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:36,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:36,760 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475403895] [2021-10-15 19:28:36,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475403895] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:36,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:36,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:28:36,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486382686] [2021-10-15 19:28:36,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:28:36,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:36,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:28:36,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:28:36,772 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 639 out of 827 [2021-10-15 19:28:36,778 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 401 places, 471 transitions, 1591 flow. Second operand has 7 states, 7 states have (on average 641.0) internal successors, (4487), 7 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:36,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:36,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 639 of 827 [2021-10-15 19:28:36,778 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:37,245 INFO L129 PetriNetUnfolder]: 324/1822 cut-off events. [2021-10-15 19:28:37,245 INFO L130 PetriNetUnfolder]: For 1023/1023 co-relation queries the response was YES. [2021-10-15 19:28:37,252 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2808 conditions, 1822 events. 324/1822 cut-off events. For 1023/1023 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 12898 event pairs, 0 based on Foata normal form. 2/1524 useless extension candidates. Maximal degree in co-relation 2782. Up to 111 conditions per place. [2021-10-15 19:28:37,257 INFO L132 encePairwiseOnDemand]: 791/827 looper letters, 82 selfloop transitions, 35 changer transitions 7/502 dead transitions. [2021-10-15 19:28:37,257 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 502 transitions, 1986 flow [2021-10-15 19:28:37,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:28:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 19:28:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5875 transitions. [2021-10-15 19:28:37,267 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7893322584979175 [2021-10-15 19:28:37,267 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5875 transitions. [2021-10-15 19:28:37,267 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5875 transitions. [2021-10-15 19:28:37,269 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:37,269 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5875 transitions. [2021-10-15 19:28:37,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 652.7777777777778) internal successors, (5875), 9 states have internal predecessors, (5875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:37,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 827.0) internal successors, (8270), 10 states have internal predecessors, (8270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:37,289 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 827.0) internal successors, (8270), 10 states have internal predecessors, (8270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:37,289 INFO L186 Difference]: Start difference. First operand has 401 places, 471 transitions, 1591 flow. Second operand 9 states and 5875 transitions. [2021-10-15 19:28:37,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 502 transitions, 1986 flow [2021-10-15 19:28:37,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 502 transitions, 1904 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:28:37,311 INFO L242 Difference]: Finished difference. Result has 410 places, 479 transitions, 1720 flow [2021-10-15 19:28:37,312 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1533, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=471, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1720, PETRI_PLACES=410, PETRI_TRANSITIONS=479} [2021-10-15 19:28:37,312 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -154 predicate places. [2021-10-15 19:28:37,313 INFO L470 AbstractCegarLoop]: Abstraction has has 410 places, 479 transitions, 1720 flow [2021-10-15 19:28:37,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 641.0) internal successors, (4487), 7 states have internal predecessors, (4487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:37,314 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:37,314 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] [2021-10-15 19:28:37,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-10-15 19:28:37,314 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:37,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:37,315 INFO L82 PathProgramCache]: Analyzing trace with hash 767716554, now seen corresponding path program 1 times [2021-10-15 19:28:37,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:37,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244345933] [2021-10-15 19:28:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:37,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:37,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:37,384 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:37,384 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244345933] [2021-10-15 19:28:37,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244345933] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:37,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:37,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:28:37,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240184873] [2021-10-15 19:28:37,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:28:37,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:37,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:28:37,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:37,394 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 639 out of 827 [2021-10-15 19:28:37,400 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 479 transitions, 1720 flow. Second operand has 6 states, 6 states have (on average 641.3333333333334) internal successors, (3848), 6 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:37,400 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:37,400 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 639 of 827 [2021-10-15 19:28:37,400 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:37,757 INFO L129 PetriNetUnfolder]: 324/1788 cut-off events. [2021-10-15 19:28:37,757 INFO L130 PetriNetUnfolder]: For 1133/1133 co-relation queries the response was YES. [2021-10-15 19:28:37,762 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2791 conditions, 1788 events. 324/1788 cut-off events. For 1133/1133 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 12492 event pairs, 0 based on Foata normal form. 2/1492 useless extension candidates. Maximal degree in co-relation 2761. Up to 116 conditions per place. [2021-10-15 19:28:37,767 INFO L132 encePairwiseOnDemand]: 800/827 looper letters, 56 selfloop transitions, 42 changer transitions 17/484 dead transitions. [2021-10-15 19:28:37,767 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 484 transitions, 1945 flow [2021-10-15 19:28:37,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:28:37,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:28:37,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4556 transitions. [2021-10-15 19:28:37,774 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7870098462601486 [2021-10-15 19:28:37,774 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4556 transitions. [2021-10-15 19:28:37,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4556 transitions. [2021-10-15 19:28:37,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:37,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4556 transitions. [2021-10-15 19:28:37,818 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 650.8571428571429) internal successors, (4556), 7 states have internal predecessors, (4556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:37,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:37,830 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:37,830 INFO L186 Difference]: Start difference. First operand has 410 places, 479 transitions, 1720 flow. Second operand 7 states and 4556 transitions. [2021-10-15 19:28:37,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 484 transitions, 1945 flow [2021-10-15 19:28:37,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 484 transitions, 1931 flow, removed 7 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:37,853 INFO L242 Difference]: Finished difference. Result has 415 places, 464 transitions, 1753 flow [2021-10-15 19:28:37,854 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1708, PETRI_DIFFERENCE_MINUEND_PLACES=407, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=479, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=437, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1753, PETRI_PLACES=415, PETRI_TRANSITIONS=464} [2021-10-15 19:28:37,855 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -149 predicate places. [2021-10-15 19:28:37,855 INFO L470 AbstractCegarLoop]: Abstraction has has 415 places, 464 transitions, 1753 flow [2021-10-15 19:28:37,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 641.3333333333334) internal successors, (3848), 6 states have internal predecessors, (3848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:37,856 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:37,856 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] [2021-10-15 19:28:37,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-10-15 19:28:37,856 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:37,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:37,857 INFO L82 PathProgramCache]: Analyzing trace with hash -147578755, now seen corresponding path program 1 times [2021-10-15 19:28:37,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:37,858 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115154304] [2021-10-15 19:28:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:37,858 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:37,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:37,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:37,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:37,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115154304] [2021-10-15 19:28:37,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115154304] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:37,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:37,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:37,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936786537] [2021-10-15 19:28:37,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:37,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:37,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:37,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:37,899 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 673 out of 827 [2021-10-15 19:28:37,901 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 415 places, 464 transitions, 1753 flow. Second operand has 3 states, 3 states have (on average 674.3333333333334) internal successors, (2023), 3 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:37,901 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:37,901 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 673 of 827 [2021-10-15 19:28:37,901 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:38,209 INFO L129 PetriNetUnfolder]: 394/2173 cut-off events. [2021-10-15 19:28:38,210 INFO L130 PetriNetUnfolder]: For 1589/1589 co-relation queries the response was YES. [2021-10-15 19:28:38,221 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3324 conditions, 2173 events. 394/2173 cut-off events. For 1589/1589 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 16494 event pairs, 0 based on Foata normal form. 4/1814 useless extension candidates. Maximal degree in co-relation 3292. Up to 99 conditions per place. [2021-10-15 19:28:38,227 INFO L132 encePairwiseOnDemand]: 815/827 looper letters, 81 selfloop transitions, 9 changer transitions 0/482 dead transitions. [2021-10-15 19:28:38,227 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 482 transitions, 2096 flow [2021-10-15 19:28:38,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:38,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2090 transitions. [2021-10-15 19:28:38,231 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8424022571543732 [2021-10-15 19:28:38,231 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2090 transitions. [2021-10-15 19:28:38,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2090 transitions. [2021-10-15 19:28:38,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:38,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2090 transitions. [2021-10-15 19:28:38,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 696.6666666666666) internal successors, (2090), 3 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:38,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:38,239 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:38,240 INFO L186 Difference]: Start difference. First operand has 415 places, 464 transitions, 1753 flow. Second operand 3 states and 2090 transitions. [2021-10-15 19:28:38,240 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 482 transitions, 2096 flow [2021-10-15 19:28:38,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 482 transitions, 1972 flow, removed 2 selfloop flow, removed 6 redundant places. [2021-10-15 19:28:38,278 INFO L242 Difference]: Finished difference. Result has 397 places, 465 transitions, 1706 flow [2021-10-15 19:28:38,279 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1665, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=455, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1706, PETRI_PLACES=397, PETRI_TRANSITIONS=465} [2021-10-15 19:28:38,279 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -167 predicate places. [2021-10-15 19:28:38,280 INFO L470 AbstractCegarLoop]: Abstraction has has 397 places, 465 transitions, 1706 flow [2021-10-15 19:28:38,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 674.3333333333334) internal successors, (2023), 3 states have internal predecessors, (2023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:38,281 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:38,281 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] [2021-10-15 19:28:38,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-10-15 19:28:38,282 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:38,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:38,282 INFO L82 PathProgramCache]: Analyzing trace with hash 160458813, now seen corresponding path program 1 times [2021-10-15 19:28:38,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:38,283 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596655324] [2021-10-15 19:28:38,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:38,283 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:38,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:38,362 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:38,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:38,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596655324] [2021-10-15 19:28:38,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596655324] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:38,363 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:38,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:28:38,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473932099] [2021-10-15 19:28:38,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:28:38,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:38,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:28:38,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:28:38,371 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 659 out of 827 [2021-10-15 19:28:38,373 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 465 transitions, 1706 flow. Second operand has 5 states, 5 states have (on average 660.4) internal successors, (3302), 5 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:38,374 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:38,374 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 659 of 827 [2021-10-15 19:28:38,374 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:38,738 INFO L129 PetriNetUnfolder]: 345/2074 cut-off events. [2021-10-15 19:28:38,739 INFO L130 PetriNetUnfolder]: For 1372/1372 co-relation queries the response was YES. [2021-10-15 19:28:38,748 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3141 conditions, 2074 events. 345/2074 cut-off events. For 1372/1372 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 15840 event pairs, 0 based on Foata normal form. 4/1750 useless extension candidates. Maximal degree in co-relation 3110. Up to 117 conditions per place. [2021-10-15 19:28:38,753 INFO L132 encePairwiseOnDemand]: 804/827 looper letters, 88 selfloop transitions, 19 changer transitions 0/486 dead transitions. [2021-10-15 19:28:38,753 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 486 transitions, 2009 flow [2021-10-15 19:28:38,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:28:38,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:28:38,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4043 transitions. [2021-10-15 19:28:38,759 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8147924224103185 [2021-10-15 19:28:38,760 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4043 transitions. [2021-10-15 19:28:38,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4043 transitions. [2021-10-15 19:28:38,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:38,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4043 transitions. [2021-10-15 19:28:38,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 673.8333333333334) internal successors, (4043), 6 states have internal predecessors, (4043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:38,773 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 827.0) internal successors, (5789), 7 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:38,774 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 827.0) internal successors, (5789), 7 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:38,774 INFO L186 Difference]: Start difference. First operand has 397 places, 465 transitions, 1706 flow. Second operand 6 states and 4043 transitions. [2021-10-15 19:28:38,774 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 486 transitions, 2009 flow [2021-10-15 19:28:38,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 486 transitions, 1998 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:38,800 INFO L242 Difference]: Finished difference. Result has 405 places, 474 transitions, 1823 flow [2021-10-15 19:28:38,801 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1682, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=445, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1823, PETRI_PLACES=405, PETRI_TRANSITIONS=474} [2021-10-15 19:28:38,801 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -159 predicate places. [2021-10-15 19:28:38,801 INFO L470 AbstractCegarLoop]: Abstraction has has 405 places, 474 transitions, 1823 flow [2021-10-15 19:28:38,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 660.4) internal successors, (3302), 5 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:38,802 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:38,803 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] [2021-10-15 19:28:38,803 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-10-15 19:28:38,803 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:38,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:38,805 INFO L82 PathProgramCache]: Analyzing trace with hash -81749273, now seen corresponding path program 1 times [2021-10-15 19:28:38,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:38,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843299700] [2021-10-15 19:28:38,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:38,805 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:38,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:38,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:38,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843299700] [2021-10-15 19:28:38,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843299700] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:38,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:38,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:28:38,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886672716] [2021-10-15 19:28:38,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:28:38,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:38,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:28:38,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:38,907 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 727 out of 827 [2021-10-15 19:28:38,911 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 474 transitions, 1823 flow. Second operand has 6 states, 6 states have (on average 728.5) internal successors, (4371), 6 states have internal predecessors, (4371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:38,911 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:38,911 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 727 of 827 [2021-10-15 19:28:38,911 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:39,162 INFO L129 PetriNetUnfolder]: 340/2053 cut-off events. [2021-10-15 19:28:39,163 INFO L130 PetriNetUnfolder]: For 1123/1123 co-relation queries the response was YES. [2021-10-15 19:28:39,170 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3035 conditions, 2053 events. 340/2053 cut-off events. For 1123/1123 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 15638 event pairs, 0 based on Foata normal form. 2/1729 useless extension candidates. Maximal degree in co-relation 3001. Up to 64 conditions per place. [2021-10-15 19:28:39,173 INFO L132 encePairwiseOnDemand]: 819/827 looper letters, 3 selfloop transitions, 3 changer transitions 60/464 dead transitions. [2021-10-15 19:28:39,173 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 405 places, 464 transitions, 1795 flow [2021-10-15 19:28:39,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:28:39,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:28:39,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 4378 transitions. [2021-10-15 19:28:39,180 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8823055219669488 [2021-10-15 19:28:39,180 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 4378 transitions. [2021-10-15 19:28:39,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 4378 transitions. [2021-10-15 19:28:39,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:39,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 4378 transitions. [2021-10-15 19:28:39,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 729.6666666666666) internal successors, (4378), 6 states have internal predecessors, (4378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:39,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 827.0) internal successors, (5789), 7 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:39,196 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 827.0) internal successors, (5789), 7 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:39,196 INFO L186 Difference]: Start difference. First operand has 405 places, 474 transitions, 1823 flow. Second operand 6 states and 4378 transitions. [2021-10-15 19:28:39,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 405 places, 464 transitions, 1795 flow [2021-10-15 19:28:39,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 399 places, 464 transitions, 1732 flow, removed 3 selfloop flow, removed 6 redundant places. [2021-10-15 19:28:39,222 INFO L242 Difference]: Finished difference. Result has 399 places, 404 transitions, 1576 flow [2021-10-15 19:28:39,223 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=464, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=461, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1576, PETRI_PLACES=399, PETRI_TRANSITIONS=404} [2021-10-15 19:28:39,223 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -165 predicate places. [2021-10-15 19:28:39,224 INFO L470 AbstractCegarLoop]: Abstraction has has 399 places, 404 transitions, 1576 flow [2021-10-15 19:28:39,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 728.5) internal successors, (4371), 6 states have internal predecessors, (4371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:39,225 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:39,225 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] [2021-10-15 19:28:39,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-10-15 19:28:39,225 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:39,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:39,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1536215993, now seen corresponding path program 1 times [2021-10-15 19:28:39,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:39,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067790794] [2021-10-15 19:28:39,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:39,227 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:39,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:39,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:39,295 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067790794] [2021-10-15 19:28:39,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067790794] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:39,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:39,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:28:39,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103120049] [2021-10-15 19:28:39,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:28:39,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:39,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:28:39,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:28:39,302 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 659 out of 827 [2021-10-15 19:28:39,305 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 404 transitions, 1576 flow. Second operand has 5 states, 5 states have (on average 660.4) internal successors, (3302), 5 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:39,305 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:39,305 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 659 of 827 [2021-10-15 19:28:39,305 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:39,713 INFO L129 PetriNetUnfolder]: 443/2497 cut-off events. [2021-10-15 19:28:39,714 INFO L130 PetriNetUnfolder]: For 884/884 co-relation queries the response was YES. [2021-10-15 19:28:39,725 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3709 conditions, 2497 events. 443/2497 cut-off events. For 884/884 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 19882 event pairs, 0 based on Foata normal form. 1/2069 useless extension candidates. Maximal degree in co-relation 3678. Up to 112 conditions per place. [2021-10-15 19:28:39,731 INFO L132 encePairwiseOnDemand]: 807/827 looper letters, 98 selfloop transitions, 21 changer transitions 0/428 dead transitions. [2021-10-15 19:28:39,731 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 428 transitions, 1949 flow [2021-10-15 19:28:39,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:28:39,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:28:39,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4709 transitions. [2021-10-15 19:28:39,738 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8134392813957506 [2021-10-15 19:28:39,738 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4709 transitions. [2021-10-15 19:28:39,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4709 transitions. [2021-10-15 19:28:39,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:39,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4709 transitions. [2021-10-15 19:28:39,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 672.7142857142857) internal successors, (4709), 7 states have internal predecessors, (4709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:39,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:39,761 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:39,762 INFO L186 Difference]: Start difference. First operand has 399 places, 404 transitions, 1576 flow. Second operand 7 states and 4709 transitions. [2021-10-15 19:28:39,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 428 transitions, 1949 flow [2021-10-15 19:28:39,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 428 transitions, 1944 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:39,782 INFO L242 Difference]: Finished difference. Result has 355 places, 407 transitions, 1656 flow [2021-10-15 19:28:39,783 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=403, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=384, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1656, PETRI_PLACES=355, PETRI_TRANSITIONS=407} [2021-10-15 19:28:39,783 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -209 predicate places. [2021-10-15 19:28:39,783 INFO L470 AbstractCegarLoop]: Abstraction has has 355 places, 407 transitions, 1656 flow [2021-10-15 19:28:39,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 660.4) internal successors, (3302), 5 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:39,784 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:39,784 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] [2021-10-15 19:28:39,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-10-15 19:28:39,785 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:39,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:39,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1579249944, now seen corresponding path program 1 times [2021-10-15 19:28:39,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:39,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071432909] [2021-10-15 19:28:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:39,786 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:39,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:39,855 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071432909] [2021-10-15 19:28:39,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071432909] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:39,855 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:39,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:28:39,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451815640] [2021-10-15 19:28:39,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:28:39,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:39,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:28:39,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:28:39,863 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 634 out of 827 [2021-10-15 19:28:39,866 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 407 transitions, 1656 flow. Second operand has 7 states, 7 states have (on average 636.1428571428571) internal successors, (4453), 7 states have internal predecessors, (4453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:39,866 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:39,866 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 634 of 827 [2021-10-15 19:28:39,867 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:40,313 INFO L129 PetriNetUnfolder]: 441/2493 cut-off events. [2021-10-15 19:28:40,314 INFO L130 PetriNetUnfolder]: For 1020/1020 co-relation queries the response was YES. [2021-10-15 19:28:40,324 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3912 conditions, 2493 events. 441/2493 cut-off events. For 1020/1020 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 19851 event pairs, 0 based on Foata normal form. 15/2079 useless extension candidates. Maximal degree in co-relation 3879. Up to 141 conditions per place. [2021-10-15 19:28:40,329 INFO L132 encePairwiseOnDemand]: 795/827 looper letters, 32 selfloop transitions, 33 changer transitions 162/411 dead transitions. [2021-10-15 19:28:40,330 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 411 transitions, 1902 flow [2021-10-15 19:28:40,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:28:40,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:28:40,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5151 transitions. [2021-10-15 19:28:40,338 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7785671100362757 [2021-10-15 19:28:40,338 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5151 transitions. [2021-10-15 19:28:40,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5151 transitions. [2021-10-15 19:28:40,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:40,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5151 transitions. [2021-10-15 19:28:40,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 643.875) internal successors, (5151), 8 states have internal predecessors, (5151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:40,356 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:40,358 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:40,358 INFO L186 Difference]: Start difference. First operand has 355 places, 407 transitions, 1656 flow. Second operand 8 states and 5151 transitions. [2021-10-15 19:28:40,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 411 transitions, 1902 flow [2021-10-15 19:28:40,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 411 transitions, 1880 flow, removed 2 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:40,378 INFO L242 Difference]: Finished difference. Result has 361 places, 246 transitions, 1078 flow [2021-10-15 19:28:40,379 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=1630, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=405, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=372, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1078, PETRI_PLACES=361, PETRI_TRANSITIONS=246} [2021-10-15 19:28:40,381 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -203 predicate places. [2021-10-15 19:28:40,382 INFO L470 AbstractCegarLoop]: Abstraction has has 361 places, 246 transitions, 1078 flow [2021-10-15 19:28:40,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 636.1428571428571) internal successors, (4453), 7 states have internal predecessors, (4453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:40,383 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:40,383 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] [2021-10-15 19:28:40,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-10-15 19:28:40,383 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:40,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:40,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1259536918, now seen corresponding path program 1 times [2021-10-15 19:28:40,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:40,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507648796] [2021-10-15 19:28:40,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:40,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:40,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:40,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:40,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507648796] [2021-10-15 19:28:40,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507648796] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:40,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:40,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:28:40,420 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766452313] [2021-10-15 19:28:40,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:28:40,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:40,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:28:40,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:28:40,426 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 582 out of 827 [2021-10-15 19:28:40,428 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 246 transitions, 1078 flow. Second operand has 3 states, 3 states have (on average 586.0) internal successors, (1758), 3 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:40,428 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:40,428 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 582 of 827 [2021-10-15 19:28:40,428 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:40,680 INFO L129 PetriNetUnfolder]: 286/1520 cut-off events. [2021-10-15 19:28:40,680 INFO L130 PetriNetUnfolder]: For 676/676 co-relation queries the response was YES. [2021-10-15 19:28:40,688 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2390 conditions, 1520 events. 286/1520 cut-off events. For 676/676 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10447 event pairs, 0 based on Foata normal form. 5/1240 useless extension candidates. Maximal degree in co-relation 2354. Up to 194 conditions per place. [2021-10-15 19:28:40,691 INFO L132 encePairwiseOnDemand]: 815/827 looper letters, 43 selfloop transitions, 10 changer transitions 0/236 dead transitions. [2021-10-15 19:28:40,692 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 236 transitions, 1119 flow [2021-10-15 19:28:40,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:28:40,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:28:40,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1794 transitions. [2021-10-15 19:28:40,695 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7230955259975816 [2021-10-15 19:28:40,695 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1794 transitions. [2021-10-15 19:28:40,696 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1794 transitions. [2021-10-15 19:28:40,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:40,696 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1794 transitions. [2021-10-15 19:28:40,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 598.0) internal successors, (1794), 3 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:40,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:40,703 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 827.0) internal successors, (3308), 4 states have internal predecessors, (3308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:40,703 INFO L186 Difference]: Start difference. First operand has 361 places, 246 transitions, 1078 flow. Second operand 3 states and 1794 transitions. [2021-10-15 19:28:40,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 236 transitions, 1119 flow [2021-10-15 19:28:40,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 236 transitions, 999 flow, removed 6 selfloop flow, removed 16 redundant places. [2021-10-15 19:28:40,716 INFO L242 Difference]: Finished difference. Result has 230 places, 236 transitions, 929 flow [2021-10-15 19:28:40,716 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=893, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=929, PETRI_PLACES=230, PETRI_TRANSITIONS=236} [2021-10-15 19:28:40,717 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -334 predicate places. [2021-10-15 19:28:40,717 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 236 transitions, 929 flow [2021-10-15 19:28:40,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 586.0) internal successors, (1758), 3 states have internal predecessors, (1758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:40,718 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:40,718 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] [2021-10-15 19:28:40,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-10-15 19:28:40,718 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:40,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:40,719 INFO L82 PathProgramCache]: Analyzing trace with hash -624507704, now seen corresponding path program 1 times [2021-10-15 19:28:40,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:40,719 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738504005] [2021-10-15 19:28:40,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:40,720 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:40,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:40,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:40,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:40,786 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738504005] [2021-10-15 19:28:40,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738504005] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:40,786 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:40,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:28:40,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106129520] [2021-10-15 19:28:40,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:28:40,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:40,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:28:40,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:28:40,795 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 636 out of 827 [2021-10-15 19:28:40,798 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 236 transitions, 929 flow. Second operand has 7 states, 7 states have (on average 638.0) internal successors, (4466), 7 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:40,799 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:40,799 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 636 of 827 [2021-10-15 19:28:40,799 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:41,095 INFO L129 PetriNetUnfolder]: 286/1518 cut-off events. [2021-10-15 19:28:41,096 INFO L130 PetriNetUnfolder]: For 487/487 co-relation queries the response was YES. [2021-10-15 19:28:41,102 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2173 conditions, 1518 events. 286/1518 cut-off events. For 487/487 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10423 event pairs, 0 based on Foata normal form. 1/1234 useless extension candidates. Maximal degree in co-relation 2142. Up to 72 conditions per place. [2021-10-15 19:28:41,106 INFO L132 encePairwiseOnDemand]: 812/827 looper letters, 48 selfloop transitions, 20 changer transitions 4/248 dead transitions. [2021-10-15 19:28:41,106 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 248 transitions, 1119 flow [2021-10-15 19:28:41,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:28:41,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 19:28:41,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 5781 transitions. [2021-10-15 19:28:41,115 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7767029423619508 [2021-10-15 19:28:41,115 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 5781 transitions. [2021-10-15 19:28:41,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 5781 transitions. [2021-10-15 19:28:41,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:41,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 5781 transitions. [2021-10-15 19:28:41,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 642.3333333333334) internal successors, (5781), 9 states have internal predecessors, (5781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:41,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 827.0) internal successors, (8270), 10 states have internal predecessors, (8270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:41,136 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 827.0) internal successors, (8270), 10 states have internal predecessors, (8270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:41,136 INFO L186 Difference]: Start difference. First operand has 230 places, 236 transitions, 929 flow. Second operand 9 states and 5781 transitions. [2021-10-15 19:28:41,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 248 transitions, 1119 flow [2021-10-15 19:28:41,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 248 transitions, 1085 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:41,148 INFO L242 Difference]: Finished difference. Result has 239 places, 238 transitions, 962 flow [2021-10-15 19:28:41,149 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=896, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=962, PETRI_PLACES=239, PETRI_TRANSITIONS=238} [2021-10-15 19:28:41,149 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -325 predicate places. [2021-10-15 19:28:41,149 INFO L470 AbstractCegarLoop]: Abstraction has has 239 places, 238 transitions, 962 flow [2021-10-15 19:28:41,150 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 638.0) internal successors, (4466), 7 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:41,150 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:41,150 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] [2021-10-15 19:28:41,151 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-10-15 19:28:41,151 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:41,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:41,153 INFO L82 PathProgramCache]: Analyzing trace with hash -907964244, now seen corresponding path program 1 times [2021-10-15 19:28:41,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:41,153 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273365689] [2021-10-15 19:28:41,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:41,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:41,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:41,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:41,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:41,237 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273365689] [2021-10-15 19:28:41,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273365689] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:41,238 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:41,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:28:41,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623727500] [2021-10-15 19:28:41,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:28:41,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:41,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:28:41,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:28:41,246 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 636 out of 827 [2021-10-15 19:28:41,249 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 238 transitions, 962 flow. Second operand has 7 states, 7 states have (on average 638.0) internal successors, (4466), 7 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:41,250 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:41,250 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 636 of 827 [2021-10-15 19:28:41,250 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:41,594 INFO L129 PetriNetUnfolder]: 286/1505 cut-off events. [2021-10-15 19:28:41,594 INFO L130 PetriNetUnfolder]: For 563/563 co-relation queries the response was YES. [2021-10-15 19:28:41,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2210 conditions, 1505 events. 286/1505 cut-off events. For 563/563 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 10283 event pairs, 0 based on Foata normal form. 1/1221 useless extension candidates. Maximal degree in co-relation 2176. Up to 112 conditions per place. [2021-10-15 19:28:41,606 INFO L132 encePairwiseOnDemand]: 815/827 looper letters, 60 selfloop transitions, 9 changer transitions 5/249 dead transitions. [2021-10-15 19:28:41,606 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 249 transitions, 1155 flow [2021-10-15 19:28:41,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:28:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:28:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4509 transitions. [2021-10-15 19:28:41,617 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7788910001727414 [2021-10-15 19:28:41,617 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4509 transitions. [2021-10-15 19:28:41,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4509 transitions. [2021-10-15 19:28:41,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:41,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4509 transitions. [2021-10-15 19:28:41,628 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 644.1428571428571) internal successors, (4509), 7 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:41,637 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:41,638 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:41,638 INFO L186 Difference]: Start difference. First operand has 239 places, 238 transitions, 962 flow. Second operand 7 states and 4509 transitions. [2021-10-15 19:28:41,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 249 transitions, 1155 flow [2021-10-15 19:28:41,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 239 places, 249 transitions, 1121 flow, removed 3 selfloop flow, removed 5 redundant places. [2021-10-15 19:28:41,651 INFO L242 Difference]: Finished difference. Result has 241 places, 236 transitions, 944 flow [2021-10-15 19:28:41,652 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=932, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=944, PETRI_PLACES=241, PETRI_TRANSITIONS=236} [2021-10-15 19:28:41,652 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -323 predicate places. [2021-10-15 19:28:41,652 INFO L470 AbstractCegarLoop]: Abstraction has has 241 places, 236 transitions, 944 flow [2021-10-15 19:28:41,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 638.0) internal successors, (4466), 7 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:41,653 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:41,654 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] [2021-10-15 19:28:41,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-10-15 19:28:41,654 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:41,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:41,655 INFO L82 PathProgramCache]: Analyzing trace with hash -121361867, now seen corresponding path program 1 times [2021-10-15 19:28:41,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:41,655 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455441690] [2021-10-15 19:28:41,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:41,656 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:41,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:41,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:41,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455441690] [2021-10-15 19:28:41,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455441690] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:41,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:41,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:28:41,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332904766] [2021-10-15 19:28:41,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:28:41,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:41,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:28:41,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:28:41,738 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 659 out of 827 [2021-10-15 19:28:41,741 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 236 transitions, 944 flow. Second operand has 5 states, 5 states have (on average 661.4) internal successors, (3307), 5 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:41,742 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:41,742 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 659 of 827 [2021-10-15 19:28:41,742 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:41,986 INFO L129 PetriNetUnfolder]: 344/1761 cut-off events. [2021-10-15 19:28:41,987 INFO L130 PetriNetUnfolder]: For 441/441 co-relation queries the response was YES. [2021-10-15 19:28:41,996 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2424 conditions, 1761 events. 344/1761 cut-off events. For 441/441 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 12379 event pairs, 0 based on Foata normal form. 0/1414 useless extension candidates. Maximal degree in co-relation 2389. Up to 92 conditions per place. [2021-10-15 19:28:42,000 INFO L132 encePairwiseOnDemand]: 817/827 looper letters, 40 selfloop transitions, 11 changer transitions 0/236 dead transitions. [2021-10-15 19:28:42,000 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 236 transitions, 1038 flow [2021-10-15 19:28:42,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:28:42,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:28:42,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3991 transitions. [2021-10-15 19:28:42,006 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8043127771060057 [2021-10-15 19:28:42,007 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3991 transitions. [2021-10-15 19:28:42,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3991 transitions. [2021-10-15 19:28:42,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:42,008 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3991 transitions. [2021-10-15 19:28:42,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 665.1666666666666) internal successors, (3991), 6 states have internal predecessors, (3991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 827.0) internal successors, (5789), 7 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,022 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 827.0) internal successors, (5789), 7 states have internal predecessors, (5789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,022 INFO L186 Difference]: Start difference. First operand has 241 places, 236 transitions, 944 flow. Second operand 6 states and 3991 transitions. [2021-10-15 19:28:42,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 236 transitions, 1038 flow [2021-10-15 19:28:42,029 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 236 transitions, 952 flow, removed 8 selfloop flow, removed 10 redundant places. [2021-10-15 19:28:42,034 INFO L242 Difference]: Finished difference. Result has 233 places, 235 transitions, 889 flow [2021-10-15 19:28:42,034 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=889, PETRI_PLACES=233, PETRI_TRANSITIONS=235} [2021-10-15 19:28:42,035 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -331 predicate places. [2021-10-15 19:28:42,035 INFO L470 AbstractCegarLoop]: Abstraction has has 233 places, 235 transitions, 889 flow [2021-10-15 19:28:42,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 661.4) internal successors, (3307), 5 states have internal predecessors, (3307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,036 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:42,036 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] [2021-10-15 19:28:42,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-10-15 19:28:42,037 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:42,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:42,037 INFO L82 PathProgramCache]: Analyzing trace with hash 2071877734, now seen corresponding path program 1 times [2021-10-15 19:28:42,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:42,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429006282] [2021-10-15 19:28:42,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:42,038 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:42,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:42,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:42,106 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:42,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429006282] [2021-10-15 19:28:42,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429006282] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:42,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:42,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:28:42,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88781018] [2021-10-15 19:28:42,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:28:42,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:42,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:28:42,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:28:42,115 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 725 out of 827 [2021-10-15 19:28:42,119 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 235 transitions, 889 flow. Second operand has 7 states, 7 states have (on average 727.1428571428571) internal successors, (5090), 7 states have internal predecessors, (5090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,120 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:42,120 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 725 of 827 [2021-10-15 19:28:42,120 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:42,439 INFO L129 PetriNetUnfolder]: 374/2254 cut-off events. [2021-10-15 19:28:42,439 INFO L130 PetriNetUnfolder]: For 292/292 co-relation queries the response was YES. [2021-10-15 19:28:42,445 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3401 conditions, 2254 events. 374/2254 cut-off events. For 292/292 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 17300 event pairs, 0 based on Foata normal form. 16/1883 useless extension candidates. Maximal degree in co-relation 3369. Up to 317 conditions per place. [2021-10-15 19:28:42,447 INFO L132 encePairwiseOnDemand]: 817/827 looper letters, 32 selfloop transitions, 2 changer transitions 12/246 dead transitions. [2021-10-15 19:28:42,447 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 246 transitions, 1021 flow [2021-10-15 19:28:42,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:28:42,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:28:42,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 5111 transitions. [2021-10-15 19:28:42,453 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.882881326653999 [2021-10-15 19:28:42,453 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 5111 transitions. [2021-10-15 19:28:42,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 5111 transitions. [2021-10-15 19:28:42,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:42,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 5111 transitions. [2021-10-15 19:28:42,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 730.1428571428571) internal successors, (5111), 7 states have internal predecessors, (5111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,467 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,468 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 827.0) internal successors, (6616), 8 states have internal predecessors, (6616), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,468 INFO L186 Difference]: Start difference. First operand has 233 places, 235 transitions, 889 flow. Second operand 7 states and 5111 transitions. [2021-10-15 19:28:42,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 246 transitions, 1021 flow [2021-10-15 19:28:42,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 246 transitions, 1013 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:42,478 INFO L242 Difference]: Finished difference. Result has 243 places, 234 transitions, 905 flow [2021-10-15 19:28:42,478 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=233, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=905, PETRI_PLACES=243, PETRI_TRANSITIONS=234} [2021-10-15 19:28:42,478 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -321 predicate places. [2021-10-15 19:28:42,478 INFO L470 AbstractCegarLoop]: Abstraction has has 243 places, 234 transitions, 905 flow [2021-10-15 19:28:42,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 727.1428571428571) internal successors, (5090), 7 states have internal predecessors, (5090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,480 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:42,480 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] [2021-10-15 19:28:42,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-10-15 19:28:42,480 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:42,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:42,481 INFO L82 PathProgramCache]: Analyzing trace with hash 1291714983, now seen corresponding path program 1 times [2021-10-15 19:28:42,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:42,481 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445460375] [2021-10-15 19:28:42,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:42,481 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:42,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:42,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:42,519 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445460375] [2021-10-15 19:28:42,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445460375] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:42,520 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:42,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:28:42,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037387957] [2021-10-15 19:28:42,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:28:42,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:42,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:28:42,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:28:42,525 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 659 out of 827 [2021-10-15 19:28:42,528 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 234 transitions, 905 flow. Second operand has 5 states, 5 states have (on average 660.4) internal successors, (3302), 5 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,528 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:42,528 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 659 of 827 [2021-10-15 19:28:42,528 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:42,790 INFO L129 PetriNetUnfolder]: 315/1827 cut-off events. [2021-10-15 19:28:42,791 INFO L130 PetriNetUnfolder]: For 387/387 co-relation queries the response was YES. [2021-10-15 19:28:42,800 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2549 conditions, 1827 events. 315/1827 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 12855 event pairs, 0 based on Foata normal form. 2/1515 useless extension candidates. Maximal degree in co-relation 2511. Up to 115 conditions per place. [2021-10-15 19:28:42,803 INFO L132 encePairwiseOnDemand]: 815/827 looper letters, 28 selfloop transitions, 12 changer transitions 10/226 dead transitions. [2021-10-15 19:28:42,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 226 transitions, 965 flow [2021-10-15 19:28:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:28:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:28:42,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3329 transitions. [2021-10-15 19:28:42,808 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8050785973397824 [2021-10-15 19:28:42,809 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3329 transitions. [2021-10-15 19:28:42,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3329 transitions. [2021-10-15 19:28:42,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:42,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3329 transitions. [2021-10-15 19:28:42,814 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 665.8) internal successors, (3329), 5 states have internal predecessors, (3329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,821 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 827.0) internal successors, (4962), 6 states have internal predecessors, (4962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,821 INFO L186 Difference]: Start difference. First operand has 243 places, 234 transitions, 905 flow. Second operand 5 states and 3329 transitions. [2021-10-15 19:28:42,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 226 transitions, 965 flow [2021-10-15 19:28:42,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 226 transitions, 927 flow, removed 12 selfloop flow, removed 8 redundant places. [2021-10-15 19:28:42,833 INFO L242 Difference]: Finished difference. Result has 232 places, 216 transitions, 795 flow [2021-10-15 19:28:42,834 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=795, PETRI_PLACES=232, PETRI_TRANSITIONS=216} [2021-10-15 19:28:42,834 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -332 predicate places. [2021-10-15 19:28:42,834 INFO L470 AbstractCegarLoop]: Abstraction has has 232 places, 216 transitions, 795 flow [2021-10-15 19:28:42,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 660.4) internal successors, (3302), 5 states have internal predecessors, (3302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,835 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:42,836 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] [2021-10-15 19:28:42,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-10-15 19:28:42,836 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:42,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:42,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1525268266, now seen corresponding path program 1 times [2021-10-15 19:28:42,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:42,837 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267371792] [2021-10-15 19:28:42,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:42,837 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:42,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:42,896 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:42,896 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267371792] [2021-10-15 19:28:42,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267371792] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:42,896 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:42,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:28:42,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187987834] [2021-10-15 19:28:42,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:28:42,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:42,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:28:42,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:42,904 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 720 out of 827 [2021-10-15 19:28:42,907 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 216 transitions, 795 flow. Second operand has 6 states, 6 states have (on average 722.3333333333334) internal successors, (4334), 6 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:42,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:42,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 720 of 827 [2021-10-15 19:28:42,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:43,414 INFO L129 PetriNetUnfolder]: 644/3281 cut-off events. [2021-10-15 19:28:43,415 INFO L130 PetriNetUnfolder]: For 469/469 co-relation queries the response was YES. [2021-10-15 19:28:43,430 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4316 conditions, 3281 events. 644/3281 cut-off events. For 469/469 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 27230 event pairs, 0 based on Foata normal form. 1/2661 useless extension candidates. Maximal degree in co-relation 4285. Up to 230 conditions per place. [2021-10-15 19:28:43,434 INFO L132 encePairwiseOnDemand]: 815/827 looper letters, 11 selfloop transitions, 11 changer transitions 41/225 dead transitions. [2021-10-15 19:28:43,434 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 225 transitions, 877 flow [2021-10-15 19:28:43,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:28:43,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:28:43,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5788 transitions. [2021-10-15 19:28:43,439 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8748488512696493 [2021-10-15 19:28:43,440 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5788 transitions. [2021-10-15 19:28:43,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5788 transitions. [2021-10-15 19:28:43,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:43,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5788 transitions. [2021-10-15 19:28:43,445 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 723.5) internal successors, (5788), 8 states have internal predecessors, (5788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:43,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:43,456 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:43,456 INFO L186 Difference]: Start difference. First operand has 232 places, 216 transitions, 795 flow. Second operand 8 states and 5788 transitions. [2021-10-15 19:28:43,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 225 transitions, 877 flow [2021-10-15 19:28:43,466 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 225 transitions, 822 flow, removed 3 selfloop flow, removed 7 redundant places. [2021-10-15 19:28:43,470 INFO L242 Difference]: Finished difference. Result has 230 places, 181 transitions, 673 flow [2021-10-15 19:28:43,470 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=673, PETRI_PLACES=230, PETRI_TRANSITIONS=181} [2021-10-15 19:28:43,471 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -334 predicate places. [2021-10-15 19:28:43,471 INFO L470 AbstractCegarLoop]: Abstraction has has 230 places, 181 transitions, 673 flow [2021-10-15 19:28:43,472 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 722.3333333333334) internal successors, (4334), 6 states have internal predecessors, (4334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:43,472 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:43,472 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] [2021-10-15 19:28:43,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-10-15 19:28:43,475 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:43,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:43,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1956501406, now seen corresponding path program 1 times [2021-10-15 19:28:43,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:43,476 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486582554] [2021-10-15 19:28:43,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:43,476 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:43,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:43,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:43,539 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486582554] [2021-10-15 19:28:43,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486582554] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:43,540 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:43,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:43,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784302637] [2021-10-15 19:28:43,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:43,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:43,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:43,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:43,545 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 755 out of 827 [2021-10-15 19:28:43,548 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 181 transitions, 673 flow. Second operand has 4 states, 4 states have (on average 757.5) internal successors, (3030), 4 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:43,548 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:43,548 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 755 of 827 [2021-10-15 19:28:43,549 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:43,832 INFO L129 PetriNetUnfolder]: 581/3021 cut-off events. [2021-10-15 19:28:43,832 INFO L130 PetriNetUnfolder]: For 503/503 co-relation queries the response was YES. [2021-10-15 19:28:43,842 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4359 conditions, 3021 events. 581/3021 cut-off events. For 503/503 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 25340 event pairs, 0 based on Foata normal form. 10/2465 useless extension candidates. Maximal degree in co-relation 4328. Up to 460 conditions per place. [2021-10-15 19:28:43,846 INFO L132 encePairwiseOnDemand]: 824/827 looper letters, 18 selfloop transitions, 0 changer transitions 2/182 dead transitions. [2021-10-15 19:28:43,846 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 182 transitions, 715 flow [2021-10-15 19:28:43,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:43,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:43,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3037 transitions. [2021-10-15 19:28:43,851 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9180773881499396 [2021-10-15 19:28:43,851 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3037 transitions. [2021-10-15 19:28:43,851 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3037 transitions. [2021-10-15 19:28:43,852 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:43,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3037 transitions. [2021-10-15 19:28:43,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 759.25) internal successors, (3037), 4 states have internal predecessors, (3037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:43,859 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:43,860 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:43,860 INFO L186 Difference]: Start difference. First operand has 230 places, 181 transitions, 673 flow. Second operand 4 states and 3037 transitions. [2021-10-15 19:28:43,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 182 transitions, 715 flow [2021-10-15 19:28:43,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 182 transitions, 701 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-10-15 19:28:43,868 INFO L242 Difference]: Finished difference. Result has 196 places, 180 transitions, 661 flow [2021-10-15 19:28:43,869 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=661, PETRI_PLACES=196, PETRI_TRANSITIONS=180} [2021-10-15 19:28:43,869 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -368 predicate places. [2021-10-15 19:28:43,869 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 180 transitions, 661 flow [2021-10-15 19:28:43,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 757.5) internal successors, (3030), 4 states have internal predecessors, (3030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:43,870 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:43,870 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] [2021-10-15 19:28:43,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-10-15 19:28:43,871 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:43,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:43,871 INFO L82 PathProgramCache]: Analyzing trace with hash -996433499, now seen corresponding path program 1 times [2021-10-15 19:28:43,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:43,872 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344776346] [2021-10-15 19:28:43,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:43,872 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:43,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:43,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:43,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:43,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344776346] [2021-10-15 19:28:43,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344776346] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:43,940 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:43,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:43,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166104542] [2021-10-15 19:28:43,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:43,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:43,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:43,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:43,946 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 764 out of 827 [2021-10-15 19:28:43,949 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 180 transitions, 661 flow. Second operand has 4 states, 4 states have (on average 765.25) internal successors, (3061), 4 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:43,949 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:43,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 764 of 827 [2021-10-15 19:28:43,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:44,382 INFO L129 PetriNetUnfolder]: 608/3655 cut-off events. [2021-10-15 19:28:44,382 INFO L130 PetriNetUnfolder]: For 339/339 co-relation queries the response was YES. [2021-10-15 19:28:44,403 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5129 conditions, 3655 events. 608/3655 cut-off events. For 339/339 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 33331 event pairs, 0 based on Foata normal form. 0/3047 useless extension candidates. Maximal degree in co-relation 5097. Up to 255 conditions per place. [2021-10-15 19:28:44,409 INFO L132 encePairwiseOnDemand]: 823/827 looper letters, 8 selfloop transitions, 3 changer transitions 0/183 dead transitions. [2021-10-15 19:28:44,409 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 183 transitions, 689 flow [2021-10-15 19:28:44,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:44,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:44,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3068 transitions. [2021-10-15 19:28:44,414 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9274486094316807 [2021-10-15 19:28:44,415 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3068 transitions. [2021-10-15 19:28:44,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3068 transitions. [2021-10-15 19:28:44,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:44,416 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3068 transitions. [2021-10-15 19:28:44,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 767.0) internal successors, (3068), 4 states have internal predecessors, (3068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:44,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:44,425 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:44,425 INFO L186 Difference]: Start difference. First operand has 196 places, 180 transitions, 661 flow. Second operand 4 states and 3068 transitions. [2021-10-15 19:28:44,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 183 transitions, 689 flow [2021-10-15 19:28:44,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 183 transitions, 685 flow, removed 2 selfloop flow, removed 2 redundant places. [2021-10-15 19:28:44,436 INFO L242 Difference]: Finished difference. Result has 197 places, 182 transitions, 678 flow [2021-10-15 19:28:44,437 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=657, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=678, PETRI_PLACES=197, PETRI_TRANSITIONS=182} [2021-10-15 19:28:44,437 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -367 predicate places. [2021-10-15 19:28:44,438 INFO L470 AbstractCegarLoop]: Abstraction has has 197 places, 182 transitions, 678 flow [2021-10-15 19:28:44,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 765.25) internal successors, (3061), 4 states have internal predecessors, (3061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:44,438 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:44,439 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] [2021-10-15 19:28:44,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-10-15 19:28:44,439 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:44,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:44,440 INFO L82 PathProgramCache]: Analyzing trace with hash 1359081957, now seen corresponding path program 1 times [2021-10-15 19:28:44,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:44,440 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780572519] [2021-10-15 19:28:44,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:44,440 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:44,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:44,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:44,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780572519] [2021-10-15 19:28:44,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780572519] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:44,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:44,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-15 19:28:44,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615116164] [2021-10-15 19:28:44,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-15 19:28:44,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:44,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-15 19:28:44,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-10-15 19:28:44,541 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 724 out of 827 [2021-10-15 19:28:44,546 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 182 transitions, 678 flow. Second operand has 8 states, 8 states have (on average 726.25) internal successors, (5810), 8 states have internal predecessors, (5810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:44,546 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:44,546 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 724 of 827 [2021-10-15 19:28:44,547 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:45,207 INFO L129 PetriNetUnfolder]: 788/5281 cut-off events. [2021-10-15 19:28:45,208 INFO L130 PetriNetUnfolder]: For 913/913 co-relation queries the response was YES. [2021-10-15 19:28:45,228 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8254 conditions, 5281 events. 788/5281 cut-off events. For 913/913 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 55097 event pairs, 0 based on Foata normal form. 30/4619 useless extension candidates. Maximal degree in co-relation 8221. Up to 424 conditions per place. [2021-10-15 19:28:45,233 INFO L132 encePairwiseOnDemand]: 818/827 looper letters, 20 selfloop transitions, 8 changer transitions 15/193 dead transitions. [2021-10-15 19:28:45,234 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 193 transitions, 809 flow [2021-10-15 19:28:45,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:28:45,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:28:45,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5822 transitions. [2021-10-15 19:28:45,240 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8799879081015719 [2021-10-15 19:28:45,240 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5822 transitions. [2021-10-15 19:28:45,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5822 transitions. [2021-10-15 19:28:45,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:45,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5822 transitions. [2021-10-15 19:28:45,248 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 727.75) internal successors, (5822), 8 states have internal predecessors, (5822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:45,254 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:45,255 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:45,255 INFO L186 Difference]: Start difference. First operand has 197 places, 182 transitions, 678 flow. Second operand 8 states and 5822 transitions. [2021-10-15 19:28:45,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 193 transitions, 809 flow [2021-10-15 19:28:45,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 193 transitions, 808 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:28:45,276 INFO L242 Difference]: Finished difference. Result has 206 places, 178 transitions, 691 flow [2021-10-15 19:28:45,277 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=677, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=691, PETRI_PLACES=206, PETRI_TRANSITIONS=178} [2021-10-15 19:28:45,277 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -358 predicate places. [2021-10-15 19:28:45,277 INFO L470 AbstractCegarLoop]: Abstraction has has 206 places, 178 transitions, 691 flow [2021-10-15 19:28:45,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 726.25) internal successors, (5810), 8 states have internal predecessors, (5810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:45,278 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:45,278 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] [2021-10-15 19:28:45,278 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-10-15 19:28:45,279 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:45,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:45,279 INFO L82 PathProgramCache]: Analyzing trace with hash -2132174738, now seen corresponding path program 1 times [2021-10-15 19:28:45,279 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:45,279 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844316914] [2021-10-15 19:28:45,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:45,280 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:45,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:45,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:45,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844316914] [2021-10-15 19:28:45,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844316914] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:45,380 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:45,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-10-15 19:28:45,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060954727] [2021-10-15 19:28:45,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-15 19:28:45,381 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:45,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-15 19:28:45,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-10-15 19:28:45,389 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 619 out of 827 [2021-10-15 19:28:45,393 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 178 transitions, 691 flow. Second operand has 11 states, 11 states have (on average 621.4545454545455) internal successors, (6836), 11 states have internal predecessors, (6836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:45,394 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:45,394 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 619 of 827 [2021-10-15 19:28:45,394 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:46,057 INFO L129 PetriNetUnfolder]: 548/3745 cut-off events. [2021-10-15 19:28:46,057 INFO L130 PetriNetUnfolder]: For 1044/1044 co-relation queries the response was YES. [2021-10-15 19:28:46,070 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6162 conditions, 3745 events. 548/3745 cut-off events. For 1044/1044 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 35102 event pairs, 0 based on Foata normal form. 6/3245 useless extension candidates. Maximal degree in co-relation 6126. Up to 338 conditions per place. [2021-10-15 19:28:46,075 INFO L132 encePairwiseOnDemand]: 809/827 looper letters, 82 selfloop transitions, 29 changer transitions 9/237 dead transitions. [2021-10-15 19:28:46,076 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 237 transitions, 1176 flow [2021-10-15 19:28:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-10-15 19:28:46,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-10-15 19:28:46,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 11863 transitions. [2021-10-15 19:28:46,091 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7549799529052377 [2021-10-15 19:28:46,091 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 11863 transitions. [2021-10-15 19:28:46,091 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 11863 transitions. [2021-10-15 19:28:46,095 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:46,095 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 11863 transitions. [2021-10-15 19:28:46,112 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 624.3684210526316) internal successors, (11863), 19 states have internal predecessors, (11863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:46,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 827.0) internal successors, (16540), 20 states have internal predecessors, (16540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:46,133 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 827.0) internal successors, (16540), 20 states have internal predecessors, (16540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:46,133 INFO L186 Difference]: Start difference. First operand has 206 places, 178 transitions, 691 flow. Second operand 19 states and 11863 transitions. [2021-10-15 19:28:46,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 237 transitions, 1176 flow [2021-10-15 19:28:46,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 237 transitions, 1126 flow, removed 11 selfloop flow, removed 6 redundant places. [2021-10-15 19:28:46,149 INFO L242 Difference]: Finished difference. Result has 221 places, 191 transitions, 830 flow [2021-10-15 19:28:46,150 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=830, PETRI_PLACES=221, PETRI_TRANSITIONS=191} [2021-10-15 19:28:46,150 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -343 predicate places. [2021-10-15 19:28:46,150 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 191 transitions, 830 flow [2021-10-15 19:28:46,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 621.4545454545455) internal successors, (6836), 11 states have internal predecessors, (6836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:46,151 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:46,151 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] [2021-10-15 19:28:46,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-10-15 19:28:46,153 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:46,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:46,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1149528639, now seen corresponding path program 1 times [2021-10-15 19:28:46,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:46,154 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623638891] [2021-10-15 19:28:46,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:46,154 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:46,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:46,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623638891] [2021-10-15 19:28:46,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623638891] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:46,234 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:46,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-10-15 19:28:46,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968897743] [2021-10-15 19:28:46,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-10-15 19:28:46,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:46,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-15 19:28:46,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-10-15 19:28:46,243 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 645 out of 827 [2021-10-15 19:28:46,247 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 191 transitions, 830 flow. Second operand has 7 states, 7 states have (on average 647.5714285714286) internal successors, (4533), 7 states have internal predecessors, (4533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:46,248 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:46,248 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 645 of 827 [2021-10-15 19:28:46,248 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:46,725 INFO L129 PetriNetUnfolder]: 482/3235 cut-off events. [2021-10-15 19:28:46,726 INFO L130 PetriNetUnfolder]: For 1293/1293 co-relation queries the response was YES. [2021-10-15 19:28:46,744 INFO L84 FinitePrefix]: Finished finitePrefix Result has 5570 conditions, 3235 events. 482/3235 cut-off events. For 1293/1293 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 28774 event pairs, 0 based on Foata normal form. 6/2795 useless extension candidates. Maximal degree in co-relation 5528. Up to 347 conditions per place. [2021-10-15 19:28:46,749 INFO L132 encePairwiseOnDemand]: 815/827 looper letters, 80 selfloop transitions, 17 changer transitions 5/235 dead transitions. [2021-10-15 19:28:46,750 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 235 transitions, 1300 flow [2021-10-15 19:28:46,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-15 19:28:46,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-10-15 19:28:46,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 7166 transitions. [2021-10-15 19:28:46,757 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7877322194129933 [2021-10-15 19:28:46,758 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 7166 transitions. [2021-10-15 19:28:46,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 7166 transitions. [2021-10-15 19:28:46,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:46,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 7166 transitions. [2021-10-15 19:28:46,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 651.4545454545455) internal successors, (7166), 11 states have internal predecessors, (7166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:46,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 827.0) internal successors, (9924), 12 states have internal predecessors, (9924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:46,777 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 827.0) internal successors, (9924), 12 states have internal predecessors, (9924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:46,778 INFO L186 Difference]: Start difference. First operand has 221 places, 191 transitions, 830 flow. Second operand 11 states and 7166 transitions. [2021-10-15 19:28:46,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 235 transitions, 1300 flow [2021-10-15 19:28:46,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 235 transitions, 1249 flow, removed 5 selfloop flow, removed 11 redundant places. [2021-10-15 19:28:46,795 INFO L242 Difference]: Finished difference. Result has 224 places, 201 transitions, 914 flow [2021-10-15 19:28:46,795 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=785, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=914, PETRI_PLACES=224, PETRI_TRANSITIONS=201} [2021-10-15 19:28:46,795 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -340 predicate places. [2021-10-15 19:28:46,796 INFO L470 AbstractCegarLoop]: Abstraction has has 224 places, 201 transitions, 914 flow [2021-10-15 19:28:46,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 647.5714285714286) internal successors, (4533), 7 states have internal predecessors, (4533), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:46,797 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:46,797 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:28:46,797 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-10-15 19:28:46,797 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:46,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:46,798 INFO L82 PathProgramCache]: Analyzing trace with hash -157233788, now seen corresponding path program 1 times [2021-10-15 19:28:46,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:46,798 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87135838] [2021-10-15 19:28:46,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:46,798 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:46,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:46,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:46,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:46,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87135838] [2021-10-15 19:28:46,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87135838] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:46,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:46,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:28:46,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468533745] [2021-10-15 19:28:46,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-15 19:28:46,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:46,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-15 19:28:46,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-15 19:28:46,853 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 765 out of 827 [2021-10-15 19:28:46,855 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 201 transitions, 914 flow. Second operand has 4 states, 4 states have (on average 766.25) internal successors, (3065), 4 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:46,856 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:46,856 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 765 of 827 [2021-10-15 19:28:46,856 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:47,071 INFO L129 PetriNetUnfolder]: 314/2377 cut-off events. [2021-10-15 19:28:47,071 INFO L130 PetriNetUnfolder]: For 833/833 co-relation queries the response was YES. [2021-10-15 19:28:47,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4033 conditions, 2377 events. 314/2377 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 19093 event pairs, 0 based on Foata normal form. 0/2099 useless extension candidates. Maximal degree in co-relation 3987. Up to 144 conditions per place. [2021-10-15 19:28:47,081 INFO L132 encePairwiseOnDemand]: 824/827 looper letters, 3 selfloop transitions, 2 changer transitions 5/188 dead transitions. [2021-10-15 19:28:47,081 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 188 transitions, 865 flow [2021-10-15 19:28:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-15 19:28:47,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2021-10-15 19:28:47,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 3066 transitions. [2021-10-15 19:28:47,084 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9268440145102781 [2021-10-15 19:28:47,084 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 3066 transitions. [2021-10-15 19:28:47,084 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 3066 transitions. [2021-10-15 19:28:47,085 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:47,085 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 3066 transitions. [2021-10-15 19:28:47,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 766.5) internal successors, (3066), 4 states have internal predecessors, (3066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,092 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,092 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 827.0) internal successors, (4135), 5 states have internal predecessors, (4135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,092 INFO L186 Difference]: Start difference. First operand has 224 places, 201 transitions, 914 flow. Second operand 4 states and 3066 transitions. [2021-10-15 19:28:47,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 188 transitions, 865 flow [2021-10-15 19:28:47,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 188 transitions, 796 flow, removed 20 selfloop flow, removed 9 redundant places. [2021-10-15 19:28:47,113 INFO L242 Difference]: Finished difference. Result has 208 places, 183 transitions, 757 flow [2021-10-15 19:28:47,113 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=786, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=757, PETRI_PLACES=208, PETRI_TRANSITIONS=183} [2021-10-15 19:28:47,113 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -356 predicate places. [2021-10-15 19:28:47,114 INFO L470 AbstractCegarLoop]: Abstraction has has 208 places, 183 transitions, 757 flow [2021-10-15 19:28:47,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 766.25) internal successors, (3065), 4 states have internal predecessors, (3065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,114 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:47,115 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] [2021-10-15 19:28:47,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-10-15 19:28:47,115 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:47,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:47,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1930689837, now seen corresponding path program 1 times [2021-10-15 19:28:47,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:47,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436533600] [2021-10-15 19:28:47,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:47,116 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:47,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:47,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:47,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:47,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436533600] [2021-10-15 19:28:47,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436533600] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:47,172 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:47,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:28:47,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25381530] [2021-10-15 19:28:47,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:28:47,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:47,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:28:47,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:47,178 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 659 out of 827 [2021-10-15 19:28:47,181 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 183 transitions, 757 flow. Second operand has 6 states, 6 states have (on average 661.0) internal successors, (3966), 6 states have internal predecessors, (3966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,181 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:47,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 659 of 827 [2021-10-15 19:28:47,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:47,315 INFO L129 PetriNetUnfolder]: 68/787 cut-off events. [2021-10-15 19:28:47,315 INFO L130 PetriNetUnfolder]: For 493/493 co-relation queries the response was YES. [2021-10-15 19:28:47,319 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1486 conditions, 787 events. 68/787 cut-off events. For 493/493 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3914 event pairs, 0 based on Foata normal form. 12/725 useless extension candidates. Maximal degree in co-relation 1446. Up to 53 conditions per place. [2021-10-15 19:28:47,320 INFO L132 encePairwiseOnDemand]: 818/827 looper letters, 21 selfloop transitions, 7 changer transitions 18/171 dead transitions. [2021-10-15 19:28:47,320 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 171 transitions, 776 flow [2021-10-15 19:28:47,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:28:47,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:28:47,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5306 transitions. [2021-10-15 19:28:47,326 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8019951632406288 [2021-10-15 19:28:47,326 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5306 transitions. [2021-10-15 19:28:47,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5306 transitions. [2021-10-15 19:28:47,327 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:47,327 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5306 transitions. [2021-10-15 19:28:47,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 663.25) internal successors, (5306), 8 states have internal predecessors, (5306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,339 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,341 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,341 INFO L186 Difference]: Start difference. First operand has 208 places, 183 transitions, 757 flow. Second operand 8 states and 5306 transitions. [2021-10-15 19:28:47,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 171 transitions, 776 flow [2021-10-15 19:28:47,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 171 transitions, 714 flow, removed 16 selfloop flow, removed 15 redundant places. [2021-10-15 19:28:47,349 INFO L242 Difference]: Finished difference. Result has 191 places, 151 transitions, 527 flow [2021-10-15 19:28:47,350 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=613, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=161, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=527, PETRI_PLACES=191, PETRI_TRANSITIONS=151} [2021-10-15 19:28:47,350 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -373 predicate places. [2021-10-15 19:28:47,350 INFO L470 AbstractCegarLoop]: Abstraction has has 191 places, 151 transitions, 527 flow [2021-10-15 19:28:47,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 661.0) internal successors, (3966), 6 states have internal predecessors, (3966), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,351 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:47,351 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] [2021-10-15 19:28:47,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-10-15 19:28:47,351 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:47,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:47,352 INFO L82 PathProgramCache]: Analyzing trace with hash 879858463, now seen corresponding path program 1 times [2021-10-15 19:28:47,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:47,352 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046088748] [2021-10-15 19:28:47,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:47,353 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:47,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:47,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:47,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046088748] [2021-10-15 19:28:47,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046088748] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:47,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:47,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-10-15 19:28:47,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880474405] [2021-10-15 19:28:47,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-10-15 19:28:47,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:47,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-10-15 19:28:47,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-10-15 19:28:47,457 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 704 out of 827 [2021-10-15 19:28:47,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 151 transitions, 527 flow. Second operand has 10 states, 10 states have (on average 706.1) internal successors, (7061), 10 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:47,462 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 704 of 827 [2021-10-15 19:28:47,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:47,703 INFO L129 PetriNetUnfolder]: 62/799 cut-off events. [2021-10-15 19:28:47,703 INFO L130 PetriNetUnfolder]: For 169/169 co-relation queries the response was YES. [2021-10-15 19:28:47,706 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1348 conditions, 799 events. 62/799 cut-off events. For 169/169 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 4020 event pairs, 0 based on Foata normal form. 6/743 useless extension candidates. Maximal degree in co-relation 1318. Up to 43 conditions per place. [2021-10-15 19:28:47,707 INFO L132 encePairwiseOnDemand]: 814/827 looper letters, 22 selfloop transitions, 6 changer transitions 28/176 dead transitions. [2021-10-15 19:28:47,707 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 176 transitions, 718 flow [2021-10-15 19:28:47,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-15 19:28:47,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2021-10-15 19:28:47,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 9903 transitions. [2021-10-15 19:28:47,716 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8553290723786492 [2021-10-15 19:28:47,716 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 9903 transitions. [2021-10-15 19:28:47,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 9903 transitions. [2021-10-15 19:28:47,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:47,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 9903 transitions. [2021-10-15 19:28:47,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 707.3571428571429) internal successors, (9903), 14 states have internal predecessors, (9903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 827.0) internal successors, (12405), 15 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,742 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 827.0) internal successors, (12405), 15 states have internal predecessors, (12405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,743 INFO L186 Difference]: Start difference. First operand has 191 places, 151 transitions, 527 flow. Second operand 14 states and 9903 transitions. [2021-10-15 19:28:47,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 176 transitions, 718 flow [2021-10-15 19:28:47,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 176 transitions, 670 flow, removed 6 selfloop flow, removed 11 redundant places. [2021-10-15 19:28:47,748 INFO L242 Difference]: Finished difference. Result has 188 places, 148 transitions, 505 flow [2021-10-15 19:28:47,749 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=482, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=505, PETRI_PLACES=188, PETRI_TRANSITIONS=148} [2021-10-15 19:28:47,749 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -376 predicate places. [2021-10-15 19:28:47,749 INFO L470 AbstractCegarLoop]: Abstraction has has 188 places, 148 transitions, 505 flow [2021-10-15 19:28:47,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 706.1) internal successors, (7061), 10 states have internal predecessors, (7061), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,751 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:28:47,751 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] [2021-10-15 19:28:47,751 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-10-15 19:28:47,751 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 50 more)] === [2021-10-15 19:28:47,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:28:47,752 INFO L82 PathProgramCache]: Analyzing trace with hash -1474526819, now seen corresponding path program 1 times [2021-10-15 19:28:47,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:28:47,752 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666121542] [2021-10-15 19:28:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:28:47,752 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:28:47,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:28:47,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:28:47,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:28:47,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666121542] [2021-10-15 19:28:47,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666121542] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:28:47,822 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:28:47,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:28:47,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15423980] [2021-10-15 19:28:47,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:28:47,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:28:47,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:28:47,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:28:47,828 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 732 out of 827 [2021-10-15 19:28:47,831 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 148 transitions, 505 flow. Second operand has 6 states, 6 states have (on average 734.5) internal successors, (4407), 6 states have internal predecessors, (4407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,831 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:28:47,831 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 732 of 827 [2021-10-15 19:28:47,832 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:28:47,901 INFO L129 PetriNetUnfolder]: 14/191 cut-off events. [2021-10-15 19:28:47,901 INFO L130 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2021-10-15 19:28:47,902 INFO L84 FinitePrefix]: Finished finitePrefix Result has 375 conditions, 191 events. 14/191 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 465 event pairs, 0 based on Foata normal form. 2/180 useless extension candidates. Maximal degree in co-relation 340. Up to 10 conditions per place. [2021-10-15 19:28:47,902 INFO L132 encePairwiseOnDemand]: 821/827 looper letters, 0 selfloop transitions, 0 changer transitions 105/105 dead transitions. [2021-10-15 19:28:47,902 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 105 transitions, 437 flow [2021-10-15 19:28:47,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:28:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:28:47,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 5874 transitions. [2021-10-15 19:28:47,907 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8878476420798065 [2021-10-15 19:28:47,908 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 5874 transitions. [2021-10-15 19:28:47,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 5874 transitions. [2021-10-15 19:28:47,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:28:47,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 5874 transitions. [2021-10-15 19:28:47,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 734.25) internal successors, (5874), 8 states have internal predecessors, (5874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,926 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 827.0) internal successors, (7443), 9 states have internal predecessors, (7443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,926 INFO L186 Difference]: Start difference. First operand has 188 places, 148 transitions, 505 flow. Second operand 8 states and 5874 transitions. [2021-10-15 19:28:47,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 105 transitions, 437 flow [2021-10-15 19:28:47,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 105 transitions, 398 flow, removed 13 selfloop flow, removed 12 redundant places. [2021-10-15 19:28:47,930 INFO L242 Difference]: Finished difference. Result has 130 places, 0 transitions, 0 flow [2021-10-15 19:28:47,930 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=827, PETRI_DIFFERENCE_MINUEND_FLOW=346, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=130, PETRI_TRANSITIONS=0} [2021-10-15 19:28:47,930 INFO L334 CegarLoopForPetriNet]: 564 programPoint places, -434 predicate places. [2021-10-15 19:28:47,930 INFO L470 AbstractCegarLoop]: Abstraction has has 130 places, 0 transitions, 0 flow [2021-10-15 19:28:47,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 734.5) internal successors, (4407), 6 states have internal predecessors, (4407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:28:47,933 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,934 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,934 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,934 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,934 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,934 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,935 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,935 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,935 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,935 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,935 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,935 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,936 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,936 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,936 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,936 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,936 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,936 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,937 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,937 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,937 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,937 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,937 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,937 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,938 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,938 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,938 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,938 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,938 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,938 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,939 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,939 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,939 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,939 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,939 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,939 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr35ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,939 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr36ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,940 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr37ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,940 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr38ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,940 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr39ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,940 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr40ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,940 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr41ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,940 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr42ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr43ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr44ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr45ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr46ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr47ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,941 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr48ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,942 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr49ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,942 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr50ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,942 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr51ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,942 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr52ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:28:47,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-10-15 19:28:47,948 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:28:47,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:28:47 BoogieIcfgContainer [2021-10-15 19:28:47,956 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:28:47,957 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:28:47,957 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:28:47,957 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:28:47,958 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:28:20" (3/4) ... [2021-10-15 19:28:47,961 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:28:48,008 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 125 nodes and edges [2021-10-15 19:28:48,013 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 76 nodes and edges [2021-10-15 19:28:48,018 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-15 19:28:48,022 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-15 19:28:48,305 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:28:48,305 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:28:48,307 INFO L168 Benchmark]: Toolchain (without parser) took 30904.74 ms. Allocated memory was 136.3 MB in the beginning and 641.7 MB in the end (delta: 505.4 MB). Free memory was 101.9 MB in the beginning and 354.7 MB in the end (delta: -252.8 MB). Peak memory consumption was 251.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:28:48,307 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:28:48,308 INFO L168 Benchmark]: CACSL2BoogieTranslator took 668.06 ms. Allocated memory is still 136.3 MB. Free memory was 101.9 MB in the beginning and 99.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:28:48,308 INFO L168 Benchmark]: Boogie Procedure Inliner took 175.04 ms. Allocated memory is still 136.3 MB. Free memory was 99.0 MB in the beginning and 88.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-15 19:28:48,309 INFO L168 Benchmark]: Boogie Preprocessor took 141.58 ms. Allocated memory is still 136.3 MB. Free memory was 88.0 MB in the beginning and 81.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:28:48,309 INFO L168 Benchmark]: RCFGBuilder took 1960.12 ms. Allocated memory is still 136.3 MB. Free memory was 81.7 MB in the beginning and 96.7 MB in the end (delta: -15.0 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:28:48,309 INFO L168 Benchmark]: TraceAbstraction took 27603.16 ms. Allocated memory was 136.3 MB in the beginning and 641.7 MB in the end (delta: 505.4 MB). Free memory was 96.1 MB in the beginning and 395.6 MB in the end (delta: -299.5 MB). Peak memory consumption was 206.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:28:48,309 INFO L168 Benchmark]: Witness Printer took 348.33 ms. Allocated memory is still 641.7 MB. Free memory was 395.6 MB in the beginning and 354.7 MB in the end (delta: 40.9 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:28:48,311 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory is still 43.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 668.06 ms. Allocated memory is still 136.3 MB. Free memory was 101.9 MB in the beginning and 99.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 175.04 ms. Allocated memory is still 136.3 MB. Free memory was 99.0 MB in the beginning and 88.5 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 141.58 ms. Allocated memory is still 136.3 MB. Free memory was 88.0 MB in the beginning and 81.7 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1960.12 ms. Allocated memory is still 136.3 MB. Free memory was 81.7 MB in the beginning and 96.7 MB in the end (delta: -15.0 MB). Peak memory consumption was 60.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27603.16 ms. Allocated memory was 136.3 MB in the beginning and 641.7 MB in the end (delta: 505.4 MB). Free memory was 96.1 MB in the beginning and 395.6 MB in the end (delta: -299.5 MB). Peak memory consumption was 206.2 MB. Max. memory is 16.1 GB. * Witness Printer took 348.33 ms. Allocated memory is still 641.7 MB. Free memory was 395.6 MB in the beginning and 354.7 MB in the end (delta: 40.9 MB). Peak memory consumption was 39.8 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1627]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 570 locations, 53 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 11.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 27517.6ms, OverallIterations: 59, TraceHistogramMax: 1, EmptinessCheckTime: 0.0ms, AutomataDifference: 22481.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 265.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 2326 SDtfs, 2462 SDslu, 2197 SDs, 0 SdLazy, 4736 SolverSat, 718 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3874.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 428 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 291 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 1636.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=1974occurred in iteration=21, InterpolantAutomatonStates: 321, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 264.2ms SsaConstructionTime, 917.7ms SatisfiabilityAnalysisTime, 2716.1ms InterpolantComputationTime, 2492 NumberOfCodeBlocks, 2492 NumberOfCodeBlocksAsserted, 59 NumberOfCheckSat, 2433 ConstructedInterpolants, 0 QuantifiedInterpolants, 5333 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 59 InterpolantComputations, 59 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 53 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:28:48,363 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d3641427-3462-4c5b-a695-3813aa558ff1/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...