./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label26.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_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/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_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/config/AutomizerReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label26.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/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_fc0f3006-fb98-45bb-8174-fc45f7622c7a/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 0625600491f7606c1783d92f1f76e95d9592d51f ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-5709675 [2021-10-15 19:06:19,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-15 19:06:19,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-15 19:06:19,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-15 19:06:19,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-15 19:06:19,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-15 19:06:19,894 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-15 19:06:19,897 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-15 19:06:19,899 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-15 19:06:19,900 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-15 19:06:19,902 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-15 19:06:19,903 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-15 19:06:19,904 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-15 19:06:19,906 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-15 19:06:19,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-15 19:06:19,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-15 19:06:19,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-15 19:06:19,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-15 19:06:19,927 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-15 19:06:19,930 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-15 19:06:19,934 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-15 19:06:19,935 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-15 19:06:19,937 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-15 19:06:19,938 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-15 19:06:19,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-15 19:06:19,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-15 19:06:19,943 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-15 19:06:19,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-15 19:06:19,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-15 19:06:19,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-15 19:06:19,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-15 19:06:19,949 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-15 19:06:19,950 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-15 19:06:19,951 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-15 19:06:19,952 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-15 19:06:19,953 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-15 19:06:19,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-15 19:06:19,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-15 19:06:19,955 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-15 19:06:19,956 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-15 19:06:19,957 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-15 19:06:19,958 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-15 19:06:19,988 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-15 19:06:19,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-15 19:06:19,989 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-15 19:06:19,989 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-15 19:06:19,990 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-15 19:06:19,991 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-15 19:06:19,991 INFO L138 SettingsManager]: * Use SBE=true [2021-10-15 19:06:19,991 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-15 19:06:19,991 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-15 19:06:19,992 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-15 19:06:19,992 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-15 19:06:19,992 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-15 19:06:19,992 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-15 19:06:19,992 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-15 19:06:19,993 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-15 19:06:19,993 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-15 19:06:19,993 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-15 19:06:19,993 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-15 19:06:19,993 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-15 19:06:19,994 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-15 19:06:19,994 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-15 19:06:19,996 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-15 19:06:19,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:06:19,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-15 19:06:19,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-15 19:06:19,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-15 19:06:19,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-15 19:06:19,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-15 19:06:19,999 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-15 19:06:20,000 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-15 19:06:20,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-15 19:06:20,001 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-15 19:06:20,001 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_fc0f3006-fb98-45bb-8174-fc45f7622c7a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0625600491f7606c1783d92f1f76e95d9592d51f [2021-10-15 19:06:20,286 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-15 19:06:20,318 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-15 19:06:20,321 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-15 19:06:20,323 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-15 19:06:20,324 INFO L275 PluginConnector]: CDTParser initialized [2021-10-15 19:06:20,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/../../sv-benchmarks/c/eca-rers2012/Problem02_label26.c [2021-10-15 19:06:20,417 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/data/100d556e0/38281df14b25477192bac4b829cbec0f/FLAGced57b590 [2021-10-15 19:06:21,054 INFO L306 CDTParser]: Found 1 translation units. [2021-10-15 19:06:21,055 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/sv-benchmarks/c/eca-rers2012/Problem02_label26.c [2021-10-15 19:06:21,066 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/data/100d556e0/38281df14b25477192bac4b829cbec0f/FLAGced57b590 [2021-10-15 19:06:21,271 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/data/100d556e0/38281df14b25477192bac4b829cbec0f [2021-10-15 19:06:21,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-15 19:06:21,275 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-15 19:06:21,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-15 19:06:21,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-15 19:06:21,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-15 19:06:21,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:06:21" (1/1) ... [2021-10-15 19:06:21,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@461cc713 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:21, skipping insertion in model container [2021-10-15 19:06:21,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 07:06:21" (1/1) ... [2021-10-15 19:06:21,293 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-15 19:06:21,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-15 19:06:21,747 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_fc0f3006-fb98-45bb-8174-fc45f7622c7a/sv-benchmarks/c/eca-rers2012/Problem02_label26.c[20881,20894] [2021-10-15 19:06:21,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:06:21,794 INFO L203 MainTranslator]: Completed pre-run [2021-10-15 19:06:21,937 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_fc0f3006-fb98-45bb-8174-fc45f7622c7a/sv-benchmarks/c/eca-rers2012/Problem02_label26.c[20881,20894] [2021-10-15 19:06:21,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-15 19:06:21,975 INFO L208 MainTranslator]: Completed translation [2021-10-15 19:06:21,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:21 WrapperNode [2021-10-15 19:06:21,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-15 19:06:21,978 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-15 19:06:21,979 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-15 19:06:21,979 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-15 19:06:21,987 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:21" (1/1) ... [2021-10-15 19:06:22,011 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:21" (1/1) ... [2021-10-15 19:06:22,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-15 19:06:22,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-15 19:06:22,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-15 19:06:22,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-15 19:06:22,092 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:21" (1/1) ... [2021-10-15 19:06:22,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:21" (1/1) ... [2021-10-15 19:06:22,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:21" (1/1) ... [2021-10-15 19:06:22,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:21" (1/1) ... [2021-10-15 19:06:22,122 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:21" (1/1) ... [2021-10-15 19:06:22,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:21" (1/1) ... [2021-10-15 19:06:22,142 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:21" (1/1) ... [2021-10-15 19:06:22,158 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-15 19:06:22,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-15 19:06:22,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-15 19:06:22,160 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-15 19:06:22,175 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:21" (1/1) ... [2021-10-15 19:06:22,183 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-15 19:06:22,197 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:22,216 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-15 19:06:22,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-15 19:06:22,266 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-15 19:06:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-15 19:06:22,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-15 19:06:22,267 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-15 19:06:23,565 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-15 19:06:23,565 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-15 19:06:23,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:06:23 BoogieIcfgContainer [2021-10-15 19:06:23,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-15 19:06:23,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-15 19:06:23,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-15 19:06:23,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-15 19:06:23,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 07:06:21" (1/3) ... [2021-10-15 19:06:23,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5036c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:06:23, skipping insertion in model container [2021-10-15 19:06:23,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 07:06:21" (2/3) ... [2021-10-15 19:06:23,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5036c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 07:06:23, skipping insertion in model container [2021-10-15 19:06:23,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:06:23" (3/3) ... [2021-10-15 19:06:23,578 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label26.c [2021-10-15 19:06:23,584 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-15 19:06:23,584 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-15 19:06:23,639 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-15 19:06:23,646 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 19:06:23,646 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-15 19:06:23,668 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 227 places, 375 transitions, 750 flow [2021-10-15 19:06:23,819 INFO L129 PetriNetUnfolder]: 149/375 cut-off events. [2021-10-15 19:06:23,819 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:06:23,821 INFO L84 FinitePrefix]: Finished finitePrefix Result has 376 conditions, 375 events. 149/375 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 260 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 0. Up to 76 conditions per place. [2021-10-15 19:06:23,822 INFO L82 GeneralOperation]: Start removeDead. Operand has 227 places, 375 transitions, 750 flow [2021-10-15 19:06:23,834 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 224 places, 370 transitions, 740 flow [2021-10-15 19:06:23,886 INFO L129 PetriNetUnfolder]: 142/355 cut-off events. [2021-10-15 19:06:23,886 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:06:23,886 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:06:23,887 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-15 19:06:23,888 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:06:23,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:23,904 INFO L82 PathProgramCache]: Analyzing trace with hash 768814821, now seen corresponding path program 1 times [2021-10-15 19:06:23,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:23,924 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022990838] [2021-10-15 19:06:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:23,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:24,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:24,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:24,442 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022990838] [2021-10-15 19:06:24,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022990838] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:24,443 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:24,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:06:24,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341922754] [2021-10-15 19:06:24,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:06:24,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:24,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:06:24,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:06:24,479 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 375 [2021-10-15 19:06:24,483 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 370 transitions, 740 flow. Second operand has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:24,484 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:06:24,484 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 375 [2021-10-15 19:06:24,485 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:06:25,370 INFO L129 PetriNetUnfolder]: 181/545 cut-off events. [2021-10-15 19:06:25,371 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-10-15 19:06:25,374 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1061 conditions, 545 events. 181/545 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 762 event pairs, 0 based on Foata normal form. 61/365 useless extension candidates. Maximal degree in co-relation 3. Up to 314 conditions per place. [2021-10-15 19:06:25,382 INFO L132 encePairwiseOnDemand]: 172/375 looper letters, 353 selfloop transitions, 80 changer transitions 81/540 dead transitions. [2021-10-15 19:06:25,383 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 540 transitions, 2108 flow [2021-10-15 19:06:25,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:06:25,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:06:25,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 703 transitions. [2021-10-15 19:06:25,407 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.6248888888888889 [2021-10-15 19:06:25,408 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 703 transitions. [2021-10-15 19:06:25,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 703 transitions. [2021-10-15 19:06:25,414 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:06:25,417 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 703 transitions. [2021-10-15 19:06:25,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:25,435 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:25,437 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:25,439 INFO L186 Difference]: Start difference. First operand has 224 places, 370 transitions, 740 flow. Second operand 3 states and 703 transitions. [2021-10-15 19:06:25,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 540 transitions, 2108 flow [2021-10-15 19:06:25,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 540 transitions, 2108 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-10-15 19:06:25,482 INFO L242 Difference]: Finished difference. Result has 228 places, 323 transitions, 1118 flow [2021-10-15 19:06:25,485 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=616, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1118, PETRI_PLACES=228, PETRI_TRANSITIONS=323} [2021-10-15 19:06:25,486 INFO L334 CegarLoopForPetriNet]: 224 programPoint places, 4 predicate places. [2021-10-15 19:06:25,487 INFO L470 AbstractCegarLoop]: Abstraction has has 228 places, 323 transitions, 1118 flow [2021-10-15 19:06:25,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.0) internal successors, (219), 3 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:25,488 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:06:25,489 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:25,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-15 19:06:25,490 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:06:25,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:25,491 INFO L82 PathProgramCache]: Analyzing trace with hash 1739122209, now seen corresponding path program 1 times [2021-10-15 19:06:25,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:25,491 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352242502] [2021-10-15 19:06:25,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:25,492 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:25,656 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:25,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:25,657 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352242502] [2021-10-15 19:06:25,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352242502] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:25,658 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:25,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:06:25,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040791578] [2021-10-15 19:06:25,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:06:25,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:25,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:06:25,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:06:25,664 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 375 [2021-10-15 19:06:25,664 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 323 transitions, 1118 flow. Second operand has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:25,665 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:06:25,665 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 375 [2021-10-15 19:06:25,665 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:06:26,366 INFO L129 PetriNetUnfolder]: 283/881 cut-off events. [2021-10-15 19:06:26,366 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2021-10-15 19:06:26,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2138 conditions, 881 events. 283/881 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 2062 event pairs, 0 based on Foata normal form. 30/902 useless extension candidates. Maximal degree in co-relation 957. Up to 453 conditions per place. [2021-10-15 19:06:26,375 INFO L132 encePairwiseOnDemand]: 333/375 looper letters, 509 selfloop transitions, 53 changer transitions 0/584 dead transitions. [2021-10-15 19:06:26,376 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 584 transitions, 3130 flow [2021-10-15 19:06:26,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:06:26,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:06:26,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 522 transitions. [2021-10-15 19:06:26,380 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.464 [2021-10-15 19:06:26,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 522 transitions. [2021-10-15 19:06:26,381 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 522 transitions. [2021-10-15 19:06:26,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:06:26,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 522 transitions. [2021-10-15 19:06:26,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.0) internal successors, (522), 3 states have internal predecessors, (522), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:26,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:26,393 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:26,393 INFO L186 Difference]: Start difference. First operand has 228 places, 323 transitions, 1118 flow. Second operand 3 states and 522 transitions. [2021-10-15 19:06:26,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 584 transitions, 3130 flow [2021-10-15 19:06:26,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 584 transitions, 2848 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:06:26,450 INFO L242 Difference]: Finished difference. Result has 169 places, 357 transitions, 1359 flow [2021-10-15 19:06:26,451 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=958, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1359, PETRI_PLACES=169, PETRI_TRANSITIONS=357} [2021-10-15 19:06:26,458 INFO L334 CegarLoopForPetriNet]: 224 programPoint places, -55 predicate places. [2021-10-15 19:06:26,458 INFO L470 AbstractCegarLoop]: Abstraction has has 169 places, 357 transitions, 1359 flow [2021-10-15 19:06:26,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.66666666666667) internal successors, (218), 3 states have internal predecessors, (218), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:26,459 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:06:26,459 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:26,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-15 19:06:26,460 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:06:26,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:26,471 INFO L82 PathProgramCache]: Analyzing trace with hash 959969494, now seen corresponding path program 1 times [2021-10-15 19:06:26,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:26,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6456217] [2021-10-15 19:06:26,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:26,472 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:26,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:26,610 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-15 19:06:26,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:26,611 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6456217] [2021-10-15 19:06:26,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6456217] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:26,611 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:26,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:06:26,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364592025] [2021-10-15 19:06:26,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:06:26,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:26,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:06:26,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:06:26,616 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 375 [2021-10-15 19:06:26,620 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 357 transitions, 1359 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:26,620 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:06:26,620 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 375 [2021-10-15 19:06:26,620 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:06:26,997 INFO L129 PetriNetUnfolder]: 189/635 cut-off events. [2021-10-15 19:06:26,997 INFO L130 PetriNetUnfolder]: For 108/108 co-relation queries the response was YES. [2021-10-15 19:06:26,998 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1489 conditions, 635 events. 189/635 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 1092 event pairs, 0 based on Foata normal form. 30/661 useless extension candidates. Maximal degree in co-relation 493. Up to 592 conditions per place. [2021-10-15 19:06:27,003 INFO L132 encePairwiseOnDemand]: 359/375 looper letters, 275 selfloop transitions, 1 changer transitions 0/299 dead transitions. [2021-10-15 19:06:27,003 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 299 transitions, 1559 flow [2021-10-15 19:06:27,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:06:27,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:06:27,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 301 transitions. [2021-10-15 19:06:27,006 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.26755555555555555 [2021-10-15 19:06:27,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 301 transitions. [2021-10-15 19:06:27,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 301 transitions. [2021-10-15 19:06:27,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:06:27,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 301 transitions. [2021-10-15 19:06:27,009 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:27,012 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:27,014 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:27,014 INFO L186 Difference]: Start difference. First operand has 169 places, 357 transitions, 1359 flow. Second operand 3 states and 301 transitions. [2021-10-15 19:06:27,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 299 transitions, 1559 flow [2021-10-15 19:06:27,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 299 transitions, 1508 flow, removed 16 selfloop flow, removed 1 redundant places. [2021-10-15 19:06:27,031 INFO L242 Difference]: Finished difference. Result has 162 places, 299 transitions, 958 flow [2021-10-15 19:06:27,032 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=956, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=298, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=958, PETRI_PLACES=162, PETRI_TRANSITIONS=299} [2021-10-15 19:06:27,032 INFO L334 CegarLoopForPetriNet]: 224 programPoint places, -62 predicate places. [2021-10-15 19:06:27,032 INFO L470 AbstractCegarLoop]: Abstraction has has 162 places, 299 transitions, 958 flow [2021-10-15 19:06:27,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:27,033 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:06:27,033 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:27,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-15 19:06:27,034 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:06:27,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:27,035 INFO L82 PathProgramCache]: Analyzing trace with hash -90241050, now seen corresponding path program 1 times [2021-10-15 19:06:27,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:27,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113119789] [2021-10-15 19:06:27,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:27,036 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:27,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:27,126 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:27,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:27,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113119789] [2021-10-15 19:06:27,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113119789] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:27,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:27,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-15 19:06:27,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590288232] [2021-10-15 19:06:27,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:06:27,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:27,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:06:27,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:06:27,138 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 375 [2021-10-15 19:06:27,139 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 299 transitions, 958 flow. Second operand has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:27,139 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:06:27,139 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 375 [2021-10-15 19:06:27,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:06:27,827 INFO L129 PetriNetUnfolder]: 328/1211 cut-off events. [2021-10-15 19:06:27,827 INFO L130 PetriNetUnfolder]: For 134/134 co-relation queries the response was YES. [2021-10-15 19:06:27,829 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2708 conditions, 1211 events. 328/1211 cut-off events. For 134/134 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 4095 event pairs, 0 based on Foata normal form. 47/1252 useless extension candidates. Maximal degree in co-relation 2698. Up to 595 conditions per place. [2021-10-15 19:06:27,837 INFO L132 encePairwiseOnDemand]: 323/375 looper letters, 422 selfloop transitions, 89 changer transitions 0/537 dead transitions. [2021-10-15 19:06:27,837 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 537 transitions, 2732 flow [2021-10-15 19:06:27,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:06:27,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:06:27,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 491 transitions. [2021-10-15 19:06:27,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.43644444444444447 [2021-10-15 19:06:27,841 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 491 transitions. [2021-10-15 19:06:27,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 491 transitions. [2021-10-15 19:06:27,842 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:06:27,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 491 transitions. [2021-10-15 19:06:27,846 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:27,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:27,851 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:27,852 INFO L186 Difference]: Start difference. First operand has 162 places, 299 transitions, 958 flow. Second operand 3 states and 491 transitions. [2021-10-15 19:06:27,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 537 transitions, 2732 flow [2021-10-15 19:06:27,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 537 transitions, 2731 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:06:27,873 INFO L242 Difference]: Finished difference. Result has 165 places, 377 transitions, 1877 flow [2021-10-15 19:06:27,873 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=957, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=299, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1877, PETRI_PLACES=165, PETRI_TRANSITIONS=377} [2021-10-15 19:06:27,874 INFO L334 CegarLoopForPetriNet]: 224 programPoint places, -59 predicate places. [2021-10-15 19:06:27,874 INFO L470 AbstractCegarLoop]: Abstraction has has 165 places, 377 transitions, 1877 flow [2021-10-15 19:06:27,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 79.0) internal successors, (237), 3 states have internal predecessors, (237), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:27,875 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:06:27,876 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:27,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-15 19:06:27,877 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:06:27,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:27,878 INFO L82 PathProgramCache]: Analyzing trace with hash 1636593553, now seen corresponding path program 1 times [2021-10-15 19:06:27,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:27,879 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162440821] [2021-10-15 19:06:27,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:27,879 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:27,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:27,964 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:27,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:27,971 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162440821] [2021-10-15 19:06:27,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162440821] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:27,972 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:27,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:06:27,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862272931] [2021-10-15 19:06:27,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:06:27,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:27,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:06:27,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:06:27,978 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 23 out of 375 [2021-10-15 19:06:27,979 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 377 transitions, 1877 flow. Second operand has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:27,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:06:27,980 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 23 of 375 [2021-10-15 19:06:27,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:06:28,902 INFO L129 PetriNetUnfolder]: 429/1872 cut-off events. [2021-10-15 19:06:28,903 INFO L130 PetriNetUnfolder]: For 1042/1042 co-relation queries the response was YES. [2021-10-15 19:06:28,905 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4660 conditions, 1872 events. 429/1872 cut-off events. For 1042/1042 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 8588 event pairs, 0 based on Foata normal form. 110/1982 useless extension candidates. Maximal degree in co-relation 4647. Up to 958 conditions per place. [2021-10-15 19:06:28,917 INFO L132 encePairwiseOnDemand]: 308/375 looper letters, 427 selfloop transitions, 134 changer transitions 0/575 dead transitions. [2021-10-15 19:06:28,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 575 transitions, 3717 flow [2021-10-15 19:06:28,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:06:28,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:06:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2021-10-15 19:06:28,952 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.42044444444444445 [2021-10-15 19:06:28,952 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2021-10-15 19:06:28,952 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2021-10-15 19:06:28,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:06:28,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2021-10-15 19:06:28,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:28,959 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:28,960 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:28,961 INFO L186 Difference]: Start difference. First operand has 165 places, 377 transitions, 1877 flow. Second operand 3 states and 473 transitions. [2021-10-15 19:06:28,961 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 575 transitions, 3717 flow [2021-10-15 19:06:28,979 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 575 transitions, 3501 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:06:28,991 INFO L242 Difference]: Finished difference. Result has 167 places, 439 transitions, 2879 flow [2021-10-15 19:06:28,992 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=1565, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=354, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2879, PETRI_PLACES=167, PETRI_TRANSITIONS=439} [2021-10-15 19:06:28,993 INFO L334 CegarLoopForPetriNet]: 224 programPoint places, -57 predicate places. [2021-10-15 19:06:28,993 INFO L470 AbstractCegarLoop]: Abstraction has has 167 places, 439 transitions, 2879 flow [2021-10-15 19:06:28,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 72.33333333333333) internal successors, (217), 3 states have internal predecessors, (217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:28,994 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:06:28,994 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:28,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-15 19:06:28,995 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:06:28,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:28,996 INFO L82 PathProgramCache]: Analyzing trace with hash 192088678, now seen corresponding path program 1 times [2021-10-15 19:06:28,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:28,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991619695] [2021-10-15 19:06:28,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:28,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:29,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:29,043 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-10-15 19:06:29,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:29,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991619695] [2021-10-15 19:06:29,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991619695] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:29,044 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:29,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:06:29,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132477629] [2021-10-15 19:06:29,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:06:29,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:29,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:06:29,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:06:29,048 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 375 [2021-10-15 19:06:29,049 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 439 transitions, 2879 flow. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:29,049 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:06:29,050 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 375 [2021-10-15 19:06:29,050 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:06:29,952 INFO L129 PetriNetUnfolder]: 341/1779 cut-off events. [2021-10-15 19:06:29,952 INFO L130 PetriNetUnfolder]: For 2038/2038 co-relation queries the response was YES. [2021-10-15 19:06:29,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4586 conditions, 1779 events. 341/1779 cut-off events. For 2038/2038 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 8438 event pairs, 0 based on Foata normal form. 87/1866 useless extension candidates. Maximal degree in co-relation 4571. Up to 823 conditions per place. [2021-10-15 19:06:29,966 INFO L132 encePairwiseOnDemand]: 325/375 looper letters, 403 selfloop transitions, 107 changer transitions 0/536 dead transitions. [2021-10-15 19:06:29,966 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 536 transitions, 3887 flow [2021-10-15 19:06:29,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:06:29,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:06:29,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 472 transitions. [2021-10-15 19:06:29,970 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.41955555555555557 [2021-10-15 19:06:29,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 472 transitions. [2021-10-15 19:06:29,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 472 transitions. [2021-10-15 19:06:29,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:06:29,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 472 transitions. [2021-10-15 19:06:29,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:29,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:29,977 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:29,978 INFO L186 Difference]: Start difference. First operand has 167 places, 439 transitions, 2879 flow. Second operand 3 states and 472 transitions. [2021-10-15 19:06:29,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 536 transitions, 3887 flow [2021-10-15 19:06:29,999 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 536 transitions, 3645 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-10-15 19:06:30,010 INFO L242 Difference]: Finished difference. Result has 168 places, 404 transitions, 2704 flow [2021-10-15 19:06:30,012 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2704, PETRI_PLACES=168, PETRI_TRANSITIONS=404} [2021-10-15 19:06:30,012 INFO L334 CegarLoopForPetriNet]: 224 programPoint places, -56 predicate places. [2021-10-15 19:06:30,012 INFO L470 AbstractCegarLoop]: Abstraction has has 168 places, 404 transitions, 2704 flow [2021-10-15 19:06:30,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:30,014 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:06:30,014 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:30,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-15 19:06:30,015 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:06:30,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:30,016 INFO L82 PathProgramCache]: Analyzing trace with hash 628642087, now seen corresponding path program 1 times [2021-10-15 19:06:30,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:30,017 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704963324] [2021-10-15 19:06:30,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:30,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:30,222 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:30,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:30,222 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704963324] [2021-10-15 19:06:30,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704963324] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-15 19:06:30,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [838084492] [2021-10-15 19:06:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:30,224 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:06:30,224 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/z3 [2021-10-15 19:06:30,230 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-15 19:06:30,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-15 19:06:30,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:30,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-15 19:06:30,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-15 19:06:31,001 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-15 19:06:31,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [838084492] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:31,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-10-15 19:06:31,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2021-10-15 19:06:31,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449359839] [2021-10-15 19:06:31,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:06:31,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:06:31,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-15 19:06:31,006 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 375 [2021-10-15 19:06:31,006 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 404 transitions, 2704 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:31,006 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:06:31,006 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 375 [2021-10-15 19:06:31,007 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:06:32,266 INFO L129 PetriNetUnfolder]: 451/2884 cut-off events. [2021-10-15 19:06:32,282 INFO L130 PetriNetUnfolder]: For 3221/3221 co-relation queries the response was YES. [2021-10-15 19:06:32,286 INFO L84 FinitePrefix]: Finished finitePrefix Result has 7354 conditions, 2884 events. 451/2884 cut-off events. For 3221/3221 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 16294 event pairs, 0 based on Foata normal form. 118/3002 useless extension candidates. Maximal degree in co-relation 7339. Up to 1754 conditions per place. [2021-10-15 19:06:32,306 INFO L132 encePairwiseOnDemand]: 319/375 looper letters, 533 selfloop transitions, 84 changer transitions 0/635 dead transitions. [2021-10-15 19:06:32,306 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 635 transitions, 5113 flow [2021-10-15 19:06:32,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:06:32,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:06:32,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2021-10-15 19:06:32,310 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.43733333333333335 [2021-10-15 19:06:32,310 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2021-10-15 19:06:32,310 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2021-10-15 19:06:32,311 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:06:32,311 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2021-10-15 19:06:32,312 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:32,315 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:32,316 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:32,317 INFO L186 Difference]: Start difference. First operand has 168 places, 404 transitions, 2704 flow. Second operand 3 states and 492 transitions. [2021-10-15 19:06:32,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 635 transitions, 5113 flow [2021-10-15 19:06:32,337 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 635 transitions, 4967 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-10-15 19:06:32,350 INFO L242 Difference]: Finished difference. Result has 170 places, 464 transitions, 3669 flow [2021-10-15 19:06:32,351 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=2597, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=404, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=320, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3669, PETRI_PLACES=170, PETRI_TRANSITIONS=464} [2021-10-15 19:06:32,352 INFO L334 CegarLoopForPetriNet]: 224 programPoint places, -54 predicate places. [2021-10-15 19:06:32,352 INFO L470 AbstractCegarLoop]: Abstraction has has 170 places, 464 transitions, 3669 flow [2021-10-15 19:06:32,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:32,352 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:06:32,353 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:32,398 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-15 19:06:32,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-15 19:06:32,579 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:06:32,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:32,579 INFO L82 PathProgramCache]: Analyzing trace with hash 1045977767, now seen corresponding path program 1 times [2021-10-15 19:06:32,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:32,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244119873] [2021-10-15 19:06:32,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:32,580 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:32,729 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-15 19:06:32,729 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:32,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244119873] [2021-10-15 19:06:32,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244119873] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:32,730 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:32,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-15 19:06:32,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522069262] [2021-10-15 19:06:32,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-15 19:06:32,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:32,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-15 19:06:32,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-15 19:06:32,734 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 375 [2021-10-15 19:06:32,735 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 464 transitions, 3669 flow. Second operand has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:32,735 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:06:32,735 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 375 [2021-10-15 19:06:32,735 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:06:34,784 INFO L129 PetriNetUnfolder]: 414/3874 cut-off events. [2021-10-15 19:06:34,784 INFO L130 PetriNetUnfolder]: For 4865/4865 co-relation queries the response was YES. [2021-10-15 19:06:34,788 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9461 conditions, 3874 events. 414/3874 cut-off events. For 4865/4865 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 25488 event pairs, 0 based on Foata normal form. 260/4134 useless extension candidates. Maximal degree in co-relation 9445. Up to 1840 conditions per place. [2021-10-15 19:06:34,804 INFO L132 encePairwiseOnDemand]: 310/375 looper letters, 316 selfloop transitions, 200 changer transitions 198/725 dead transitions. [2021-10-15 19:06:34,808 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 725 transitions, 5479 flow [2021-10-15 19:06:34,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-15 19:06:34,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-10-15 19:06:34,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 726 transitions. [2021-10-15 19:06:34,813 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.2765714285714286 [2021-10-15 19:06:34,813 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 726 transitions. [2021-10-15 19:06:34,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 726 transitions. [2021-10-15 19:06:34,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:06:34,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 726 transitions. [2021-10-15 19:06:34,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 103.71428571428571) internal successors, (726), 7 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:34,821 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 375.0) internal successors, (3000), 8 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:34,825 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 375.0) internal successors, (3000), 8 states have internal predecessors, (3000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:34,825 INFO L186 Difference]: Start difference. First operand has 170 places, 464 transitions, 3669 flow. Second operand 7 states and 726 transitions. [2021-10-15 19:06:34,825 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 725 transitions, 5479 flow [2021-10-15 19:06:34,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 725 transitions, 5389 flow, removed 1 selfloop flow, removed 1 redundant places. [2021-10-15 19:06:34,858 INFO L242 Difference]: Finished difference. Result has 181 places, 390 transitions, 3679 flow [2021-10-15 19:06:34,859 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=410, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=176, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3679, PETRI_PLACES=181, PETRI_TRANSITIONS=390} [2021-10-15 19:06:34,859 INFO L334 CegarLoopForPetriNet]: 224 programPoint places, -43 predicate places. [2021-10-15 19:06:34,859 INFO L470 AbstractCegarLoop]: Abstraction has has 181 places, 390 transitions, 3679 flow [2021-10-15 19:06:34,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 57.8) internal successors, (289), 5 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:34,860 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:06:34,860 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:34,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-15 19:06:34,861 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:06:34,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:34,861 INFO L82 PathProgramCache]: Analyzing trace with hash 901541662, now seen corresponding path program 1 times [2021-10-15 19:06:34,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:34,862 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157579550] [2021-10-15 19:06:34,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:34,862 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:34,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:34,942 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-15 19:06:34,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:34,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157579550] [2021-10-15 19:06:34,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157579550] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:34,942 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:34,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:06:34,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981557742] [2021-10-15 19:06:34,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:06:34,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:34,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:06:34,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:06:34,946 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 29 out of 375 [2021-10-15 19:06:34,946 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 390 transitions, 3679 flow. Second operand has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:34,947 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:06:34,947 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 29 of 375 [2021-10-15 19:06:34,947 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:06:36,132 INFO L129 PetriNetUnfolder]: 209/2812 cut-off events. [2021-10-15 19:06:36,133 INFO L130 PetriNetUnfolder]: For 4640/4640 co-relation queries the response was YES. [2021-10-15 19:06:36,139 INFO L84 FinitePrefix]: Finished finitePrefix Result has 6933 conditions, 2812 events. 209/2812 cut-off events. For 4640/4640 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 17392 event pairs, 0 based on Foata normal form. 80/2892 useless extension candidates. Maximal degree in co-relation 6910. Up to 2078 conditions per place. [2021-10-15 19:06:36,151 INFO L132 encePairwiseOnDemand]: 334/375 looper letters, 374 selfloop transitions, 2 changer transitions 32/430 dead transitions. [2021-10-15 19:06:36,151 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 430 transitions, 3527 flow [2021-10-15 19:06:36,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:06:36,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:06:36,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2021-10-15 19:06:36,154 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.3928888888888889 [2021-10-15 19:06:36,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2021-10-15 19:06:36,154 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2021-10-15 19:06:36,155 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:06:36,155 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2021-10-15 19:06:36,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:36,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:36,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:36,161 INFO L186 Difference]: Start difference. First operand has 181 places, 390 transitions, 3679 flow. Second operand 3 states and 442 transitions. [2021-10-15 19:06:36,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 430 transitions, 3527 flow [2021-10-15 19:06:36,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 430 transitions, 3499 flow, removed 14 selfloop flow, removed 2 redundant places. [2021-10-15 19:06:36,187 INFO L242 Difference]: Finished difference. Result has 177 places, 262 transitions, 1879 flow [2021-10-15 19:06:36,188 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=2411, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1879, PETRI_PLACES=177, PETRI_TRANSITIONS=262} [2021-10-15 19:06:36,188 INFO L334 CegarLoopForPetriNet]: 224 programPoint places, -47 predicate places. [2021-10-15 19:06:36,189 INFO L470 AbstractCegarLoop]: Abstraction has has 177 places, 262 transitions, 1879 flow [2021-10-15 19:06:36,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:36,189 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-10-15 19:06:36,189 INFO L254 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:36,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-15 19:06:36,190 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-15 19:06:36,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-15 19:06:36,190 INFO L82 PathProgramCache]: Analyzing trace with hash -1138162939, now seen corresponding path program 1 times [2021-10-15 19:06:36,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-15 19:06:36,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62651703] [2021-10-15 19:06:36,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-15 19:06:36,191 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-15 19:06:36,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-15 19:06:36,251 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-15 19:06:36,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-15 19:06:36,254 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62651703] [2021-10-15 19:06:36,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62651703] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-15 19:06:36,254 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-15 19:06:36,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-15 19:06:36,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496243484] [2021-10-15 19:06:36,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-15 19:06:36,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-15 19:06:36,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-15 19:06:36,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-15 19:06:36,260 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 26 out of 375 [2021-10-15 19:06:36,260 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 262 transitions, 1879 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:36,260 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-10-15 19:06:36,260 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 26 of 375 [2021-10-15 19:06:36,260 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-10-15 19:06:37,120 INFO L129 PetriNetUnfolder]: 87/2096 cut-off events. [2021-10-15 19:06:37,120 INFO L130 PetriNetUnfolder]: For 2503/2503 co-relation queries the response was YES. [2021-10-15 19:06:37,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4688 conditions, 2096 events. 87/2096 cut-off events. For 2503/2503 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 11563 event pairs, 0 based on Foata normal form. 71/2167 useless extension candidates. Maximal degree in co-relation 4666. Up to 1018 conditions per place. [2021-10-15 19:06:37,126 INFO L132 encePairwiseOnDemand]: 345/375 looper letters, 0 selfloop transitions, 0 changer transitions 370/370 dead transitions. [2021-10-15 19:06:37,126 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 370 transitions, 2449 flow [2021-10-15 19:06:37,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-15 19:06:37,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-10-15 19:06:37,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2021-10-15 19:06:37,130 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.37066666666666664 [2021-10-15 19:06:37,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2021-10-15 19:06:37,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2021-10-15 19:06:37,131 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-15 19:06:37,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2021-10-15 19:06:37,133 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:37,136 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:37,137 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 375.0) internal successors, (1500), 4 states have internal predecessors, (1500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:37,137 INFO L186 Difference]: Start difference. First operand has 177 places, 262 transitions, 1879 flow. Second operand 3 states and 417 transitions. [2021-10-15 19:06:37,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 370 transitions, 2449 flow [2021-10-15 19:06:37,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 370 transitions, 2313 flow, removed 54 selfloop flow, removed 3 redundant places. [2021-10-15 19:06:37,154 INFO L242 Difference]: Finished difference. Result has 174 places, 0 transitions, 0 flow [2021-10-15 19:06:37,155 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=375, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=234, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=174, PETRI_TRANSITIONS=0} [2021-10-15 19:06:37,155 INFO L334 CegarLoopForPetriNet]: 224 programPoint places, -50 predicate places. [2021-10-15 19:06:37,155 INFO L470 AbstractCegarLoop]: Abstraction has has 174 places, 0 transitions, 0 flow [2021-10-15 19:06:37,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-15 19:06:37,158 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-15 19:06:37,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-15 19:06:37,165 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-15 19:06:37,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 07:06:37 BoogieIcfgContainer [2021-10-15 19:06:37,171 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-15 19:06:37,171 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-15 19:06:37,171 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-15 19:06:37,171 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-15 19:06:37,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 07:06:23" (3/4) ... [2021-10-15 19:06:37,175 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-15 19:06:37,199 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-15 19:06:37,200 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-15 19:06:37,202 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:06:37,203 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-15 19:06:37,370 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/witness.graphml [2021-10-15 19:06:37,371 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-15 19:06:37,373 INFO L168 Benchmark]: Toolchain (without parser) took 16096.63 ms. Allocated memory was 88.1 MB in the beginning and 274.7 MB in the end (delta: 186.6 MB). Free memory was 50.4 MB in the beginning and 188.3 MB in the end (delta: -137.9 MB). Peak memory consumption was 48.0 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:37,373 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 68.6 MB in the beginning and 68.5 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-15 19:06:37,375 INFO L168 Benchmark]: CACSL2BoogieTranslator took 699.12 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 50.2 MB in the beginning and 74.0 MB in the end (delta: -23.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:37,376 INFO L168 Benchmark]: Boogie Procedure Inliner took 103.45 ms. Allocated memory is still 113.2 MB. Free memory was 74.0 MB in the beginning and 68.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:37,376 INFO L168 Benchmark]: Boogie Preprocessor took 76.53 ms. Allocated memory is still 113.2 MB. Free memory was 68.2 MB in the beginning and 64.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:37,377 INFO L168 Benchmark]: RCFGBuilder took 1409.16 ms. Allocated memory is still 113.2 MB. Free memory was 64.0 MB in the beginning and 58.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:37,377 INFO L168 Benchmark]: TraceAbstraction took 13600.66 ms. Allocated memory was 113.2 MB in the beginning and 274.7 MB in the end (delta: 161.5 MB). Free memory was 57.9 MB in the beginning and 202.2 MB in the end (delta: -144.4 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:37,377 INFO L168 Benchmark]: Witness Printer took 199.62 ms. Allocated memory is still 274.7 MB. Free memory was 202.2 MB in the beginning and 188.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-15 19:06:37,380 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 88.1 MB. Free memory was 68.6 MB in the beginning and 68.5 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 699.12 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 50.2 MB in the beginning and 74.0 MB in the end (delta: -23.8 MB). Peak memory consumption was 4.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 103.45 ms. Allocated memory is still 113.2 MB. Free memory was 74.0 MB in the beginning and 68.7 MB in the end (delta: 5.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 76.53 ms. Allocated memory is still 113.2 MB. Free memory was 68.2 MB in the beginning and 64.5 MB in the end (delta: 3.7 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1409.16 ms. Allocated memory is still 113.2 MB. Free memory was 64.0 MB in the beginning and 58.4 MB in the end (delta: 5.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13600.66 ms. Allocated memory was 113.2 MB in the beginning and 274.7 MB in the end (delta: 161.5 MB). Free memory was 57.9 MB in the beginning and 202.2 MB in the end (delta: -144.4 MB). Peak memory consumption was 18.7 MB. Max. memory is 16.1 GB. * Witness Printer took 199.62 ms. Allocated memory is still 274.7 MB. Free memory was 202.2 MB in the beginning and 188.3 MB in the end (delta: 13.9 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 590]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 227 locations, 1 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 51.3ms, RemoveRedundantFlowTime: 0.0ms, RemoveRedundantFlowUnfoldingTime: 0.0ms, BackfoldingTime: 0.0ms, BackfoldingUnfoldingTime: 0.0ms, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 13529.9ms, OverallIterations: 10, TraceHistogramMax: 4, EmptinessCheckTime: 0.0ms, AutomataDifference: 10576.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 188.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 928 SDtfs, 1409 SDslu, 11 SDs, 0 SdLazy, 3862 SolverSat, 654 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3641.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 79.1ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=3679occurred in iteration=8, InterpolantAutomatonStates: 34, 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: 149.8ms SsaConstructionTime, 426.0ms SatisfiabilityAnalysisTime, 1567.7ms InterpolantComputationTime, 1909 NumberOfCodeBlocks, 1909 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1898 ConstructedInterpolants, 0 QuantifiedInterpolants, 5268 SizeOfPredicates, 0 NumberOfNonLiveVariables, 305 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 490/506 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-15 19:06:37,423 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_fc0f3006-fb98-45bb-8174-fc45f7622c7a/bin/uautomizer-hJ6jxDFKc3/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...