./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.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_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/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_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/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_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/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 8dbe51203231315b42884daa8d242df16dd4c19d .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:38:55,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:38:55,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:38:55,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:38:55,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:38:55,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:38:55,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:38:55,901 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:38:55,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:38:55,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:38:55,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:38:55,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:38:55,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:38:55,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:38:55,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:38:55,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:38:55,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:38:55,934 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:38:55,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:38:55,943 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:38:55,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:38:55,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:38:55,950 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:38:55,951 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:38:55,959 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:38:55,960 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:38:55,960 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:38:55,962 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:38:55,963 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:38:55,965 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:38:55,965 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:38:55,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:38:55,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:38:55,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:38:55,975 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:38:55,976 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:38:55,976 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:38:55,977 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:38:55,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:38:55,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:38:55,979 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:38:55,980 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:38:56,023 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:38:56,023 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:38:56,024 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:38:56,024 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:38:56,032 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:38:56,032 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:38:56,032 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:38:56,033 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:38:56,033 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:38:56,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:38:56,034 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:38:56,034 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:38:56,034 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:38:56,035 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:38:56,035 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:38:56,035 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:38:56,035 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:38:56,035 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:38:56,035 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:38:56,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:38:56,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:38:56,036 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:38:56,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:38:56,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:38:56,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:38:56,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:38:56,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:38:56,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:38:56,036 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:38:56,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:38:56,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:38:56,037 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:38:56,037 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_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dbe51203231315b42884daa8d242df16dd4c19d [2021-10-15 19:38:56,315 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:38:56,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:38:56,348 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:38:56,349 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:38:56,350 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:38:56,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-10-15 19:38:56,441 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3/data/9df11ead2/5b83b0a9253f47508fea26a614b2aadb/FLAG7e844ca1f [2021-10-15 19:38:57,038 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:38:57,039 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c [2021-10-15 19:38:57,054 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3/data/9df11ead2/5b83b0a9253f47508fea26a614b2aadb/FLAG7e844ca1f [2021-10-15 19:38:57,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3/data/9df11ead2/5b83b0a9253f47508fea26a614b2aadb [2021-10-15 19:38:57,334 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:38:57,335 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:38:57,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:38:57,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:38:57,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:38:57,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:38:57" (1/1) ... [2021-10-15 19:38:57,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66629117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:57, skipping insertion in model container [2021-10-15 19:38:57,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:38:57" (1/1) ... [2021-10-15 19:38:57,349 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:38:57,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:38:57,662 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_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2021-10-15 19:38:57,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:38:57,701 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:38:57,800 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_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/sv-benchmarks/c/product-lines/minepump_spec1_product42.cil.c[15994,16007] [2021-10-15 19:38:57,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:38:57,824 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:38:57,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:57 WrapperNode [2021-10-15 19:38:57,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:38:57,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:38:57,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:38:57,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:38:57,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:57" (1/1) ... [2021-10-15 19:38:57,851 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:57" (1/1) ... [2021-10-15 19:38:57,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:38:57,896 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:38:57,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:38:57,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:38:57,905 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:57" (1/1) ... [2021-10-15 19:38:57,905 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:57" (1/1) ... [2021-10-15 19:38:57,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:57" (1/1) ... [2021-10-15 19:38:57,926 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:57" (1/1) ... [2021-10-15 19:38:57,941 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:57" (1/1) ... [2021-10-15 19:38:57,960 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:57" (1/1) ... [2021-10-15 19:38:57,962 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:57" (1/1) ... [2021-10-15 19:38:57,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:38:57,978 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:38:57,978 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:38:57,978 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:38:57,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:57" (1/1) ... [2021-10-15 19:38:57,989 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:38:58,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:38:58,023 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:38:58,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:38:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:38:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:38:58,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:38:58,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:38:58,938 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:38:58,938 INFO L299 CfgBuilder]: Removed 116 assume(true) statements. [2021-10-15 19:38:58,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:38:58 BoogieIcfgContainer [2021-10-15 19:38:58,941 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:38:58,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:38:58,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:38:58,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:38:58,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:38:57" (1/3) ... [2021-10-15 19:38:58,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4382867f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:38:58, skipping insertion in model container [2021-10-15 19:38:58,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:38:57" (2/3) ... [2021-10-15 19:38:58,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4382867f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:38:58, skipping insertion in model container [2021-10-15 19:38:58,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:38:58" (3/3) ... [2021-10-15 19:38:58,949 INFO L111 eAbstractionObserver]: Analyzing ICFG minepump_spec1_product42.cil.c [2021-10-15 19:38:58,955 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:38:58,955 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-10-15 19:38:59,004 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:38:59,010 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 19:38:59,011 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-10-15 19:38:59,047 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 87 places, 129 transitions, 258 flow [2021-10-15 19:38:59,083 INFO L129 PetriNetUnfolder]: 43/129 cut-off events. [2021-10-15 19:38:59,083 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:38:59,085 INFO L84 FinitePrefix]: Finished finitePrefix Result has 130 conditions, 129 events. 43/129 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 266 event pairs, 0 based on Foata normal form. 0/83 useless extension candidates. Maximal degree in co-relation 0. Up to 5 conditions per place. [2021-10-15 19:38:59,088 INFO L82 GeneralOperation]: Start removeDead. Operand has 87 places, 129 transitions, 258 flow [2021-10-15 19:38:59,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 83 places, 122 transitions, 244 flow [2021-10-15 19:38:59,119 INFO L129 PetriNetUnfolder]: 19/61 cut-off events. [2021-10-15 19:38:59,119 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:38:59,119 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:59,120 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:38:59,121 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:59,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:59,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1594902839, now seen corresponding path program 1 times [2021-10-15 19:38:59,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:59,137 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442334259] [2021-10-15 19:38:59,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:59,138 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:59,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:59,392 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 19:38:59,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:38:59,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442334259] [2021-10-15 19:38:59,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442334259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:59,394 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:59,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:38:59,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018095026] [2021-10-15 19:38:59,405 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-15 19:38:59,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:38:59,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-15 19:38:59,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-15 19:38:59,433 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 129 [2021-10-15 19:38:59,438 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 122 transitions, 244 flow. Second operand has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,439 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:59,439 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 129 [2021-10-15 19:38:59,440 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:59,477 INFO L129 PetriNetUnfolder]: 35/117 cut-off events. [2021-10-15 19:38:59,478 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:38:59,480 INFO L84 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 117 events. 35/117 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 241 event pairs, 0 based on Foata normal form. 4/84 useless extension candidates. Maximal degree in co-relation 117. Up to 5 conditions per place. [2021-10-15 19:38:59,482 INFO L132 encePairwiseOnDemand]: 124/129 looper letters, 0 selfloop transitions, 0 changer transitions 0/117 dead transitions. [2021-10-15 19:38:59,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 117 transitions, 234 flow [2021-10-15 19:38:59,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-15 19:38:59,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-10-15 19:38:59,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 249 transitions. [2021-10-15 19:38:59,498 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9651162790697675 [2021-10-15 19:38:59,499 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 249 transitions. [2021-10-15 19:38:59,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 249 transitions. [2021-10-15 19:38:59,502 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:59,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 249 transitions. [2021-10-15 19:38:59,512 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 124.5) internal successors, (249), 2 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,520 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,521 INFO L186 Difference]: Start difference. First operand has 83 places, 122 transitions, 244 flow. Second operand 2 states and 249 transitions. [2021-10-15 19:38:59,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 117 transitions, 234 flow [2021-10-15 19:38:59,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 117 transitions, 234 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:38:59,533 INFO L242 Difference]: Finished difference. Result has 84 places, 117 transitions, 234 flow [2021-10-15 19:38:59,535 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=234, PETRI_PLACES=84, PETRI_TRANSITIONS=117} [2021-10-15 19:38:59,536 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2021-10-15 19:38:59,536 INFO L470 AbstractCegarLoop]: Abstraction has has 84 places, 117 transitions, 234 flow [2021-10-15 19:38:59,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 122.5) internal successors, (245), 2 states have internal predecessors, (245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,537 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:59,537 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:38:59,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:38:59,538 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:59,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:59,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1653307560, now seen corresponding path program 1 times [2021-10-15 19:38:59,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:59,540 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548722932] [2021-10-15 19:38:59,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:59,540 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:59,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:38:59,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:38:59,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548722932] [2021-10-15 19:38:59,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548722932] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:59,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:59,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:38:59,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159579086] [2021-10-15 19:38:59,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:38:59,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:38:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:38:59,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:38:59,735 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 119 out of 129 [2021-10-15 19:38:59,736 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 117 transitions, 234 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,736 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:59,736 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 119 of 129 [2021-10-15 19:38:59,737 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:59,746 INFO L129 PetriNetUnfolder]: 16/52 cut-off events. [2021-10-15 19:38:59,746 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:38:59,746 INFO L84 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 52 events. 16/52 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 0/36 useless extension candidates. Maximal degree in co-relation 54. Up to 5 conditions per place. [2021-10-15 19:38:59,747 INFO L132 encePairwiseOnDemand]: 127/129 looper letters, 1 selfloop transitions, 1 changer transitions 0/52 dead transitions. [2021-10-15 19:38:59,747 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 52 transitions, 108 flow [2021-10-15 19:38:59,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:38:59,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:38:59,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 360 transitions. [2021-10-15 19:38:59,751 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9302325581395349 [2021-10-15 19:38:59,751 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 360 transitions. [2021-10-15 19:38:59,751 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 360 transitions. [2021-10-15 19:38:59,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:59,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 360 transitions. [2021-10-15 19:38:59,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,757 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,757 INFO L186 Difference]: Start difference. First operand has 84 places, 117 transitions, 234 flow. Second operand 3 states and 360 transitions. [2021-10-15 19:38:59,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 52 transitions, 108 flow [2021-10-15 19:38:59,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 52 transitions, 108 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:38:59,760 INFO L242 Difference]: Finished difference. Result has 40 places, 52 transitions, 106 flow [2021-10-15 19:38:59,760 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=40, PETRI_TRANSITIONS=52} [2021-10-15 19:38:59,760 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -43 predicate places. [2021-10-15 19:38:59,761 INFO L470 AbstractCegarLoop]: Abstraction has has 40 places, 52 transitions, 106 flow [2021-10-15 19:38:59,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,761 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:59,762 INFO L254 CegarLoopForPetriNet]: 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 19:38:59,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:38:59,762 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:59,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:59,763 INFO L82 PathProgramCache]: Analyzing trace with hash 533078269, now seen corresponding path program 1 times [2021-10-15 19:38:59,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:59,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421410053] [2021-10-15 19:38:59,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:59,764 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:59,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:59,853 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 19:38:59,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:38:59,854 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421410053] [2021-10-15 19:38:59,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421410053] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:59,854 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:59,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:38:59,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329196736] [2021-10-15 19:38:59,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:38:59,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:38:59,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:38:59,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:38:59,859 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 129 [2021-10-15 19:38:59,860 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 52 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,860 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:59,860 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 129 [2021-10-15 19:38:59,861 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:38:59,900 INFO L129 PetriNetUnfolder]: 15/51 cut-off events. [2021-10-15 19:38:59,900 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:38:59,900 INFO L84 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 51 events. 15/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 32 event pairs, 0 based on Foata normal form. 0/37 useless extension candidates. Maximal degree in co-relation 59. Up to 4 conditions per place. [2021-10-15 19:38:59,901 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 4 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2021-10-15 19:38:59,901 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 51 transitions, 118 flow [2021-10-15 19:38:59,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-15 19:38:59,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-10-15 19:38:59,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 553 transitions. [2021-10-15 19:38:59,905 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8573643410852713 [2021-10-15 19:38:59,905 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 553 transitions. [2021-10-15 19:38:59,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 553 transitions. [2021-10-15 19:38:59,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:38:59,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 553 transitions. [2021-10-15 19:38:59,908 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,912 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 129.0) internal successors, (774), 6 states have internal predecessors, (774), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,912 INFO L186 Difference]: Start difference. First operand has 40 places, 52 transitions, 106 flow. Second operand 5 states and 553 transitions. [2021-10-15 19:38:59,913 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 51 transitions, 118 flow [2021-10-15 19:38:59,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 117 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:38:59,915 INFO L242 Difference]: Finished difference. Result has 43 places, 51 transitions, 109 flow [2021-10-15 19:38:59,916 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=109, PETRI_PLACES=43, PETRI_TRANSITIONS=51} [2021-10-15 19:38:59,916 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -40 predicate places. [2021-10-15 19:38:59,916 INFO L470 AbstractCegarLoop]: Abstraction has has 43 places, 51 transitions, 109 flow [2021-10-15 19:38:59,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.4) internal successors, (552), 5 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,917 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:38:59,917 INFO L254 CegarLoopForPetriNet]: trace 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 19:38:59,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:38:59,918 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:38:59,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:38:59,919 INFO L82 PathProgramCache]: Analyzing trace with hash 545820985, now seen corresponding path program 1 times [2021-10-15 19:38:59,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:38:59,919 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882337035] [2021-10-15 19:38:59,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:38:59,920 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:38:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:38:59,973 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 19:38:59,974 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:38:59,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882337035] [2021-10-15 19:38:59,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882337035] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:38:59,975 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:38:59,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:38:59,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85175300] [2021-10-15 19:38:59,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:38:59,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:38:59,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:38:59,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:38:59,978 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 129 [2021-10-15 19:38:59,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 51 transitions, 109 flow. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:38:59,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:38:59,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 129 [2021-10-15 19:38:59,979 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:39:00,000 INFO L129 PetriNetUnfolder]: 22/79 cut-off events. [2021-10-15 19:39:00,001 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:39:00,001 INFO L84 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 79 events. 22/79 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 53 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 93. Up to 6 conditions per place. [2021-10-15 19:39:00,002 INFO L132 encePairwiseOnDemand]: 123/129 looper letters, 6 selfloop transitions, 4 changer transitions 0/54 dead transitions. [2021-10-15 19:39:00,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 54 transitions, 135 flow [2021-10-15 19:39:00,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:39:00,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:39:00,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2021-10-15 19:39:00,005 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8294573643410853 [2021-10-15 19:39:00,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2021-10-15 19:39:00,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2021-10-15 19:39:00,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:39:00,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2021-10-15 19:39:00,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,009 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,009 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,010 INFO L186 Difference]: Start difference. First operand has 43 places, 51 transitions, 109 flow. Second operand 3 states and 321 transitions. [2021-10-15 19:39:00,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 54 transitions, 135 flow [2021-10-15 19:39:00,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 130 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-10-15 19:39:00,013 INFO L242 Difference]: Finished difference. Result has 44 places, 53 transitions, 132 flow [2021-10-15 19:39:00,013 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=44, PETRI_TRANSITIONS=53} [2021-10-15 19:39:00,013 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -39 predicate places. [2021-10-15 19:39:00,014 INFO L470 AbstractCegarLoop]: Abstraction has has 44 places, 53 transitions, 132 flow [2021-10-15 19:39:00,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,014 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:39:00,015 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 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 19:39:00,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:39:00,015 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:39:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:39:00,016 INFO L82 PathProgramCache]: Analyzing trace with hash 2110814541, now seen corresponding path program 1 times [2021-10-15 19:39:00,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:39:00,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815721103] [2021-10-15 19:39:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:39:00,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:39:00,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:39:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:39:00,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:39:00,088 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815721103] [2021-10-15 19:39:00,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815721103] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:39:00,088 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:39:00,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:39:00,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801540226] [2021-10-15 19:39:00,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:39:00,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:39:00,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:39:00,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:39:00,092 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 129 [2021-10-15 19:39:00,093 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 53 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,093 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:39:00,094 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 129 [2021-10-15 19:39:00,094 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:39:00,202 INFO L129 PetriNetUnfolder]: 92/309 cut-off events. [2021-10-15 19:39:00,202 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2021-10-15 19:39:00,204 INFO L84 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 309 events. 92/309 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1065 event pairs, 0 based on Foata normal form. 0/238 useless extension candidates. Maximal degree in co-relation 415. Up to 36 conditions per place. [2021-10-15 19:39:00,206 INFO L132 encePairwiseOnDemand]: 121/129 looper letters, 14 selfloop transitions, 15 changer transitions 0/73 dead transitions. [2021-10-15 19:39:00,206 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 73 transitions, 230 flow [2021-10-15 19:39:00,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-15 19:39:00,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-10-15 19:39:00,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 840 transitions. [2021-10-15 19:39:00,210 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.813953488372093 [2021-10-15 19:39:00,210 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 840 transitions. [2021-10-15 19:39:00,210 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 840 transitions. [2021-10-15 19:39:00,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:39:00,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 840 transitions. [2021-10-15 19:39:00,214 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 105.0) internal successors, (840), 8 states have internal predecessors, (840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,220 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 129.0) internal successors, (1161), 9 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,220 INFO L186 Difference]: Start difference. First operand has 44 places, 53 transitions, 132 flow. Second operand 8 states and 840 transitions. [2021-10-15 19:39:00,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 73 transitions, 230 flow [2021-10-15 19:39:00,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 73 transitions, 222 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:39:00,225 INFO L242 Difference]: Finished difference. Result has 55 places, 67 transitions, 228 flow [2021-10-15 19:39:00,226 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=228, PETRI_PLACES=55, PETRI_TRANSITIONS=67} [2021-10-15 19:39:00,227 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -28 predicate places. [2021-10-15 19:39:00,227 INFO L470 AbstractCegarLoop]: Abstraction has has 55 places, 67 transitions, 228 flow [2021-10-15 19:39:00,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 101.8) internal successors, (509), 5 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,228 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:39:00,228 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 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 19:39:00,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:39:00,228 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:39:00,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:39:00,229 INFO L82 PathProgramCache]: Analyzing trace with hash 331369175, now seen corresponding path program 1 times [2021-10-15 19:39:00,229 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:39:00,230 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122006170] [2021-10-15 19:39:00,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:39:00,230 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:39:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:39:00,351 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 19:39:00,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:39:00,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122006170] [2021-10-15 19:39:00,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122006170] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:39:00,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:39:00,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:39:00,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106709052] [2021-10-15 19:39:00,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:39:00,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:39:00,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:39:00,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:39:00,357 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 129 [2021-10-15 19:39:00,358 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 67 transitions, 228 flow. Second operand has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,358 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:39:00,358 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 129 [2021-10-15 19:39:00,358 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:39:00,523 INFO L129 PetriNetUnfolder]: 170/577 cut-off events. [2021-10-15 19:39:00,524 INFO L130 PetriNetUnfolder]: For 151/151 co-relation queries the response was YES. [2021-10-15 19:39:00,526 INFO L84 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 577 events. 170/577 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2184 event pairs, 0 based on Foata normal form. 0/441 useless extension candidates. Maximal degree in co-relation 917. Up to 66 conditions per place. [2021-10-15 19:39:00,531 INFO L132 encePairwiseOnDemand]: 120/129 looper letters, 39 selfloop transitions, 26 changer transitions 0/113 dead transitions. [2021-10-15 19:39:00,531 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 113 transitions, 565 flow [2021-10-15 19:39:00,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-15 19:39:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-15 19:39:00,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 861 transitions. [2021-10-15 19:39:00,536 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7416020671834626 [2021-10-15 19:39:00,536 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 861 transitions. [2021-10-15 19:39:00,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 861 transitions. [2021-10-15 19:39:00,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:39:00,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 861 transitions. [2021-10-15 19:39:00,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 95.66666666666667) internal successors, (861), 9 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,546 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 129.0) internal successors, (1290), 10 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,546 INFO L186 Difference]: Start difference. First operand has 55 places, 67 transitions, 228 flow. Second operand 9 states and 861 transitions. [2021-10-15 19:39:00,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 113 transitions, 565 flow [2021-10-15 19:39:00,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 113 transitions, 565 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:39:00,556 INFO L242 Difference]: Finished difference. Result has 68 places, 91 transitions, 434 flow [2021-10-15 19:39:00,556 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=434, PETRI_PLACES=68, PETRI_TRANSITIONS=91} [2021-10-15 19:39:00,556 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -15 predicate places. [2021-10-15 19:39:00,557 INFO L470 AbstractCegarLoop]: Abstraction has has 68 places, 91 transitions, 434 flow [2021-10-15 19:39:00,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 92.4) internal successors, (462), 5 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,558 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:39:00,558 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:00,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 19:39:00,558 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:39:00,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:39:00,559 INFO L82 PathProgramCache]: Analyzing trace with hash 261712181, now seen corresponding path program 1 times [2021-10-15 19:39:00,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:39:00,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929796390] [2021-10-15 19:39:00,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:39:00,560 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:39:00,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:39:00,650 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 19:39:00,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:39:00,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929796390] [2021-10-15 19:39:00,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929796390] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:39:00,651 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:39:00,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-15 19:39:00,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2329437] [2021-10-15 19:39:00,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:39:00,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:39:00,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:39:00,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:39:00,659 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 129 [2021-10-15 19:39:00,660 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 91 transitions, 434 flow. Second operand has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,660 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:39:00,660 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 129 [2021-10-15 19:39:00,660 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:39:00,788 INFO L129 PetriNetUnfolder]: 250/930 cut-off events. [2021-10-15 19:39:00,788 INFO L130 PetriNetUnfolder]: For 281/281 co-relation queries the response was YES. [2021-10-15 19:39:00,791 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1605 conditions, 930 events. 250/930 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 4749 event pairs, 0 based on Foata normal form. 14/759 useless extension candidates. Maximal degree in co-relation 1590. Up to 126 conditions per place. [2021-10-15 19:39:00,796 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 13 selfloop transitions, 7 changer transitions 0/97 dead transitions. [2021-10-15 19:39:00,796 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 97 transitions, 488 flow [2021-10-15 19:39:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-15 19:39:00,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-15 19:39:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 603 transitions. [2021-10-15 19:39:00,799 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7790697674418605 [2021-10-15 19:39:00,799 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 603 transitions. [2021-10-15 19:39:00,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 603 transitions. [2021-10-15 19:39:00,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:39:00,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 603 transitions. [2021-10-15 19:39:00,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.5) internal successors, (603), 6 states have internal predecessors, (603), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,805 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 129.0) internal successors, (903), 7 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,805 INFO L186 Difference]: Start difference. First operand has 68 places, 91 transitions, 434 flow. Second operand 6 states and 603 transitions. [2021-10-15 19:39:00,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 97 transitions, 488 flow [2021-10-15 19:39:00,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 97 transitions, 488 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:39:00,814 INFO L242 Difference]: Finished difference. Result has 77 places, 97 transitions, 492 flow [2021-10-15 19:39:00,814 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=492, PETRI_PLACES=77, PETRI_TRANSITIONS=97} [2021-10-15 19:39:00,814 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, -6 predicate places. [2021-10-15 19:39:00,815 INFO L470 AbstractCegarLoop]: Abstraction has has 77 places, 97 transitions, 492 flow [2021-10-15 19:39:00,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 99.2) internal successors, (496), 5 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,815 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:39:00,815 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:00,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-15 19:39:00,816 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:39:00,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:39:00,817 INFO L82 PathProgramCache]: Analyzing trace with hash -325093833, now seen corresponding path program 1 times [2021-10-15 19:39:00,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:39:00,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924624616] [2021-10-15 19:39:00,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:39:00,817 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:39:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:39:00,892 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 19:39:00,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:39:00,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924624616] [2021-10-15 19:39:00,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924624616] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:39:00,893 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:39:00,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:39:00,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807964136] [2021-10-15 19:39:00,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:39:00,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:39:00,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:39:00,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:39:00,898 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 129 [2021-10-15 19:39:00,899 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 97 transitions, 492 flow. Second operand has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:00,899 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:39:00,900 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 129 [2021-10-15 19:39:00,900 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:39:01,114 INFO L129 PetriNetUnfolder]: 290/1164 cut-off events. [2021-10-15 19:39:01,114 INFO L130 PetriNetUnfolder]: For 520/520 co-relation queries the response was YES. [2021-10-15 19:39:01,119 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2265 conditions, 1164 events. 290/1164 cut-off events. For 520/520 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 6688 event pairs, 0 based on Foata normal form. 14/972 useless extension candidates. Maximal degree in co-relation 2246. Up to 156 conditions per place. [2021-10-15 19:39:01,124 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 10 selfloop transitions, 7 changer transitions 0/100 dead transitions. [2021-10-15 19:39:01,124 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 100 transitions, 542 flow [2021-10-15 19:39:01,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:39:01,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:39:01,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 708 transitions. [2021-10-15 19:39:01,128 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7840531561461794 [2021-10-15 19:39:01,128 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 708 transitions. [2021-10-15 19:39:01,128 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 708 transitions. [2021-10-15 19:39:01,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:39:01,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 708 transitions. [2021-10-15 19:39:01,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.14285714285714) internal successors, (708), 7 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:01,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:01,135 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 129.0) internal successors, (1032), 8 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:01,135 INFO L186 Difference]: Start difference. First operand has 77 places, 97 transitions, 492 flow. Second operand 7 states and 708 transitions. [2021-10-15 19:39:01,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 100 transitions, 542 flow [2021-10-15 19:39:01,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 100 transitions, 538 flow, removed 2 selfloop flow, removed 0 redundant places. [2021-10-15 19:39:01,147 INFO L242 Difference]: Finished difference. Result has 86 places, 100 transitions, 533 flow [2021-10-15 19:39:01,148 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=533, PETRI_PLACES=86, PETRI_TRANSITIONS=100} [2021-10-15 19:39:01,148 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 3 predicate places. [2021-10-15 19:39:01,148 INFO L470 AbstractCegarLoop]: Abstraction has has 86 places, 100 transitions, 533 flow [2021-10-15 19:39:01,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:01,149 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:39:01,149 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:01,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 19:39:01,150 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:39:01,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:39:01,150 INFO L82 PathProgramCache]: Analyzing trace with hash -1604957511, now seen corresponding path program 1 times [2021-10-15 19:39:01,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:39:01,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638569854] [2021-10-15 19:39:01,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:39:01,151 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:39:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:39:01,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:39:01,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:39:01,208 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638569854] [2021-10-15 19:39:01,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638569854] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:39:01,208 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:39:01,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:39:01,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206950563] [2021-10-15 19:39:01,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:39:01,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:39:01,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:39:01,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:39:01,211 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 129 [2021-10-15 19:39:01,212 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 100 transitions, 533 flow. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:01,212 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:39:01,212 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 129 [2021-10-15 19:39:01,212 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:39:01,430 INFO L129 PetriNetUnfolder]: 329/1412 cut-off events. [2021-10-15 19:39:01,430 INFO L130 PetriNetUnfolder]: For 692/692 co-relation queries the response was YES. [2021-10-15 19:39:01,436 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2911 conditions, 1412 events. 329/1412 cut-off events. For 692/692 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 8853 event pairs, 0 based on Foata normal form. 12/1198 useless extension candidates. Maximal degree in co-relation 2888. Up to 192 conditions per place. [2021-10-15 19:39:01,443 INFO L132 encePairwiseOnDemand]: 125/129 looper letters, 7 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2021-10-15 19:39:01,443 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 102 transitions, 559 flow [2021-10-15 19:39:01,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:39:01,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:39:01,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 332 transitions. [2021-10-15 19:39:01,445 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8578811369509044 [2021-10-15 19:39:01,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 332 transitions. [2021-10-15 19:39:01,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 332 transitions. [2021-10-15 19:39:01,446 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:39:01,446 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 332 transitions. [2021-10-15 19:39:01,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:01,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:01,449 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 129.0) internal successors, (516), 4 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:01,449 INFO L186 Difference]: Start difference. First operand has 86 places, 100 transitions, 533 flow. Second operand 3 states and 332 transitions. [2021-10-15 19:39:01,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 102 transitions, 559 flow [2021-10-15 19:39:01,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 102 transitions, 556 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:39:01,465 INFO L242 Difference]: Finished difference. Result has 87 places, 101 transitions, 544 flow [2021-10-15 19:39:01,465 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=530, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=544, PETRI_PLACES=87, PETRI_TRANSITIONS=101} [2021-10-15 19:39:01,465 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 4 predicate places. [2021-10-15 19:39:01,466 INFO L470 AbstractCegarLoop]: Abstraction has has 87 places, 101 transitions, 544 flow [2021-10-15 19:39:01,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:01,466 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:39:01,467 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:01,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 19:39:01,467 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:39:01,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:39:01,468 INFO L82 PathProgramCache]: Analyzing trace with hash -447661573, now seen corresponding path program 1 times [2021-10-15 19:39:01,468 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:39:01,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349750993] [2021-10-15 19:39:01,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:39:01,469 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:39:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:39:01,566 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 19:39:01,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:39:01,567 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349750993] [2021-10-15 19:39:01,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349750993] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:39:01,567 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:39:01,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-15 19:39:01,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957978883] [2021-10-15 19:39:01,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-15 19:39:01,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:39:01,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-15 19:39:01,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:39:01,576 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 129 [2021-10-15 19:39:01,578 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 101 transitions, 544 flow. Second operand has 6 states, 6 states have (on average 99.33333333333333) internal successors, (596), 6 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:01,579 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:39:01,580 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 129 [2021-10-15 19:39:01,580 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:39:02,023 INFO L129 PetriNetUnfolder]: 447/2032 cut-off events. [2021-10-15 19:39:02,023 INFO L130 PetriNetUnfolder]: For 1406/1406 co-relation queries the response was YES. [2021-10-15 19:39:02,032 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4356 conditions, 2032 events. 447/2032 cut-off events. For 1406/1406 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 14542 event pairs, 3 based on Foata normal form. 32/1733 useless extension candidates. Maximal degree in co-relation 4332. Up to 282 conditions per place. [2021-10-15 19:39:02,041 INFO L132 encePairwiseOnDemand]: 122/129 looper letters, 33 selfloop transitions, 27 changer transitions 0/122 dead transitions. [2021-10-15 19:39:02,041 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 122 transitions, 803 flow [2021-10-15 19:39:02,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-15 19:39:02,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2021-10-15 19:39:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1015 transitions. [2021-10-15 19:39:02,045 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7868217054263565 [2021-10-15 19:39:02,046 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1015 transitions. [2021-10-15 19:39:02,046 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1015 transitions. [2021-10-15 19:39:02,047 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:39:02,047 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1015 transitions. [2021-10-15 19:39:02,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 101.5) internal successors, (1015), 10 states have internal predecessors, (1015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:02,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:02,055 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 129.0) internal successors, (1419), 11 states have internal predecessors, (1419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:02,055 INFO L186 Difference]: Start difference. First operand has 87 places, 101 transitions, 544 flow. Second operand 10 states and 1015 transitions. [2021-10-15 19:39:02,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 122 transitions, 803 flow [2021-10-15 19:39:02,071 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 122 transitions, 799 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-10-15 19:39:02,074 INFO L242 Difference]: Finished difference. Result has 99 places, 115 transitions, 737 flow [2021-10-15 19:39:02,075 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=129, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=737, PETRI_PLACES=99, PETRI_TRANSITIONS=115} [2021-10-15 19:39:02,076 INFO L334 CegarLoopForPetriNet]: 83 programPoint places, 16 predicate places. [2021-10-15 19:39:02,076 INFO L470 AbstractCegarLoop]: Abstraction has has 99 places, 115 transitions, 737 flow [2021-10-15 19:39:02,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 99.33333333333333) internal successors, (596), 6 states have internal predecessors, (596), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:39:02,076 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:39:02,077 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:39:02,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 19:39:02,077 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:39:02,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:39:02,079 INFO L82 PathProgramCache]: Analyzing trace with hash -2059222374, now seen corresponding path program 1 times [2021-10-15 19:39:02,079 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:39:02,081 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471363295] [2021-10-15 19:39:02,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:39:02,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:39:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:39:02,160 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-15 19:39:02,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-15 19:39:02,295 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-15 19:39:02,296 INFO L626 BasicCegarLoop]: Counterexample is feasible [2021-10-15 19:39:02,296 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:39:02,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:39:02,298 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:39:02,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-15 19:39:02,305 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:39:02,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:39:02 BoogieIcfgContainer [2021-10-15 19:39:02,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:39:02,460 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:39:02,460 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:39:02,460 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:39:02,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:38:58" (3/4) ... [2021-10-15 19:39:02,462 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-15 19:39:02,591 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:39:02,591 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:39:02,593 INFO L168 Benchmark]: Toolchain (without parser) took 5256.55 ms. Allocated memory was 94.4 MB in the beginning and 157.3 MB in the end (delta: 62.9 MB). Free memory was 68.7 MB in the beginning and 105.3 MB in the end (delta: -36.6 MB). Peak memory consumption was 27.8 MB. Max. memory is 16.1 GB. [2021-10-15 19:39:02,593 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory is still 46.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:39:02,594 INFO L168 Benchmark]: CACSL2BoogieTranslator took 488.56 ms. Allocated memory is still 94.4 MB. Free memory was 68.5 MB in the beginning and 50.1 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:39:02,594 INFO L168 Benchmark]: Boogie Procedure Inliner took 69.35 ms. Allocated memory is still 94.4 MB. Free memory was 50.0 MB in the beginning and 46.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:39:02,595 INFO L168 Benchmark]: Boogie Preprocessor took 70.63 ms. Allocated memory is still 94.4 MB. Free memory was 46.8 MB in the beginning and 44.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-15 19:39:02,595 INFO L168 Benchmark]: RCFGBuilder took 962.97 ms. Allocated memory is still 94.4 MB. Free memory was 44.5 MB in the beginning and 37.1 MB in the end (delta: 7.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:39:02,595 INFO L168 Benchmark]: TraceAbstraction took 3517.27 ms. Allocated memory was 94.4 MB in the beginning and 157.3 MB in the end (delta: 62.9 MB). Free memory was 36.8 MB in the beginning and 125.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 63.6 MB. Max. memory is 16.1 GB. [2021-10-15 19:39:02,596 INFO L168 Benchmark]: Witness Printer took 131.32 ms. Allocated memory is still 157.3 MB. Free memory was 125.2 MB in the beginning and 105.3 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-15 19:39:02,598 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 77.6 MB. Free memory is still 46.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 488.56 ms. Allocated memory is still 94.4 MB. Free memory was 68.5 MB in the beginning and 50.1 MB in the end (delta: 18.4 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 69.35 ms. Allocated memory is still 94.4 MB. Free memory was 50.0 MB in the beginning and 46.8 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 70.63 ms. Allocated memory is still 94.4 MB. Free memory was 46.8 MB in the beginning and 44.5 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 962.97 ms. Allocated memory is still 94.4 MB. Free memory was 44.5 MB in the beginning and 37.1 MB in the end (delta: 7.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3517.27 ms. Allocated memory was 94.4 MB in the beginning and 157.3 MB in the end (delta: 62.9 MB). Free memory was 36.8 MB in the beginning and 125.2 MB in the end (delta: -88.4 MB). Peak memory consumption was 63.6 MB. Max. memory is 16.1 GB. * Witness Printer took 131.32 ms. Allocated memory is still 157.3 MB. Free memory was 125.2 MB in the beginning and 105.3 MB in the end (delta: 19.9 MB). Peak memory consumption was 18.9 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 - CounterExampleResult [Line: 774]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L219] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L423] int waterLevel = 1; [L424] int methaneLevelCritical = 0; [L591] int pumpRunning = 0; [L592] int systemActive = 1; [L843] int cleanupTimeShifts = 4; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L916] int retValue_acc ; [L917] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L834] int retValue_acc ; [L837] retValue_acc = 1 [L838] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L923] tmp = valid_product() [L925] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L521] int splverifierCounter ; [L522] int tmp ; [L523] int tmp___0 ; [L524] int tmp___1 ; [L525] int tmp___2 ; [L528] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L530] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L532] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L538] tmp = __VERIFIER_nondet_int() [L540] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L441] COND TRUE waterLevel < 2 [L442] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND TRUE \read(tmp___2) [L765] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L599] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L606] COND TRUE \read(systemActive) [L628] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L631] COND TRUE ! pumpRunning [L743] int retValue_acc ; [L744] int tmp ; [L745] int tmp___0 ; [L503] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L506] COND FALSE !(waterLevel < 2) [L510] retValue_acc = 0 [L511] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L749] tmp = isHighWaterSensorDry() [L751] COND FALSE !(\read(tmp)) [L754] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L756] retValue_acc = tmp___0 [L757] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L633] tmp = isHighWaterLevel() [L635] COND TRUE \read(tmp) [L662] int tmp ; [L687] int retValue_acc ; [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L691] retValue_acc = isMethaneLevelCritical() [L693] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L666] tmp = isMethaneAlarm() [L668] COND FALSE !(\read(tmp)) [L656] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L780] int tmp ; [L781] int tmp___0 ; [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L785] tmp = isMethaneLevelCritical() [L787] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L530] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L532] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L538] tmp = __VERIFIER_nondet_int() [L540] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L548] tmp___0 = __VERIFIER_nondet_int() [L550] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L453] COND FALSE !(\read(methaneLevelCritical)) [L456] methaneLevelCritical = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L558] tmp___2 = __VERIFIER_nondet_int() [L560] COND TRUE \read(tmp___2) [L765] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L599] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L429] COND TRUE waterLevel > 0 [L430] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L606] COND TRUE \read(systemActive) [L628] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L631] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L780] int tmp ; [L781] int tmp___0 ; [L462] int retValue_acc ; [L465] retValue_acc = methaneLevelCritical [L466] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L785] tmp = isMethaneLevelCritical() [L787] COND TRUE \read(tmp) [L698] int retValue_acc ; [L701] retValue_acc = pumpRunning [L702] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L789] tmp___0 = isPumpRunning() [L791] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] [L774] reach_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=1] - UnprovableResult [Line: 774]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 87 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 15.0ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3302.6ms, OverallIterations: 11, TraceHistogramMax: 2, EmptinessCheckTime: 0.0ms, AutomataDifference: 1751.7ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 93.0ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 54 SDtfs, 111 SDslu, 90 SDs, 0 SdLazy, 177 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 212.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 213.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=737occurred in iteration=10, InterpolantAutomatonStates: 56, 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: 67.3ms SsaConstructionTime, 391.4ms SatisfiabilityAnalysisTime, 616.7ms InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 260 ConstructedInterpolants, 0 QuantifiedInterpolants, 492 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 RESULT: Ultimate proved your program to be incorrect! [2021-10-15 19:39:02,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1c3b5a8d-d3af-4bee-90dd-26f03e3c95ba/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...