./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL --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 b7a355896b8b65b5a2cb80c69f28000f566073d33b0003da7d28a637c6d5db6a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 05:04:34,891 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 05:04:34,893 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 05:04:34,930 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 05:04:34,931 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 05:04:34,932 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 05:04:34,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 05:04:34,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 05:04:34,939 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 05:04:34,940 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 05:04:34,942 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 05:04:34,943 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 05:04:34,944 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 05:04:34,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 05:04:34,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 05:04:34,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 05:04:34,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 05:04:34,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 05:04:34,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 05:04:34,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 05:04:34,959 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 05:04:34,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 05:04:34,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 05:04:34,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 05:04:34,969 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 05:04:34,969 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 05:04:34,970 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 05:04:34,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 05:04:34,981 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 05:04:34,982 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 05:04:34,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 05:04:34,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 05:04:34,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 05:04:34,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 05:04:34,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 05:04:34,988 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 05:04:34,989 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 05:04:34,989 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 05:04:34,990 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 05:04:34,991 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 05:04:34,992 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 05:04:34,999 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-19 05:04:35,050 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 05:04:35,051 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 05:04:35,051 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-19 05:04:35,051 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-19 05:04:35,052 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 05:04:35,052 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 05:04:35,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-19 05:04:35,053 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-19 05:04:35,053 INFO L138 SettingsManager]: * Use SBE=true [2021-11-19 05:04:35,053 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 05:04:35,054 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 05:04:35,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 05:04:35,054 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 05:04:35,054 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 05:04:35,054 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 05:04:35,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 05:04:35,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 05:04:35,055 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 05:04:35,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 05:04:35,055 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 05:04:35,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 05:04:35,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 05:04:35,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 05:04:35,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 05:04:35,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:04:35,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 05:04:35,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 05:04:35,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 05:04:35,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-19 05:04:35,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 05:04:35,058 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-19 05:04:35,058 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-19 05:04:35,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 05:04:35,058 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 05:04:35,058 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_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b7a355896b8b65b5a2cb80c69f28000f566073d33b0003da7d28a637c6d5db6a [2021-11-19 05:04:35,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 05:04:35,373 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 05:04:35,376 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 05:04:35,377 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 05:04:35,378 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 05:04:35,380 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/../../sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2021-11-19 05:04:35,473 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/data/591ab3144/2ef51345fcbc4c8897717b713a029d8d/FLAGe5b6bb8be [2021-11-19 05:04:36,020 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 05:04:36,023 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2021-11-19 05:04:36,046 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/data/591ab3144/2ef51345fcbc4c8897717b713a029d8d/FLAGe5b6bb8be [2021-11-19 05:04:36,319 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/data/591ab3144/2ef51345fcbc4c8897717b713a029d8d [2021-11-19 05:04:36,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 05:04:36,324 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 05:04:36,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 05:04:36,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 05:04:36,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 05:04:36,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:36" (1/1) ... [2021-11-19 05:04:36,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f07551f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:36, skipping insertion in model container [2021-11-19 05:04:36,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 05:04:36" (1/1) ... [2021-11-19 05:04:36,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 05:04:36,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 05:04:36,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c[12968,12981] [2021-11-19 05:04:36,638 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:04:36,648 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 05:04:36,720 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/sv-benchmarks/c/seq-mthreaded/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c[12968,12981] [2021-11-19 05:04:36,720 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 05:04:36,736 INFO L208 MainTranslator]: Completed translation [2021-11-19 05:04:36,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:36 WrapperNode [2021-11-19 05:04:36,737 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 05:04:36,738 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 05:04:36,738 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 05:04:36,739 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 05:04:36,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:36" (1/1) ... [2021-11-19 05:04:36,773 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:36" (1/1) ... [2021-11-19 05:04:36,840 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 443 [2021-11-19 05:04:36,856 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 05:04:36,857 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 05:04:36,857 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 05:04:36,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 05:04:36,866 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:36" (1/1) ... [2021-11-19 05:04:36,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:36" (1/1) ... [2021-11-19 05:04:36,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:36" (1/1) ... [2021-11-19 05:04:36,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:36" (1/1) ... [2021-11-19 05:04:36,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:36" (1/1) ... [2021-11-19 05:04:36,893 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:36" (1/1) ... [2021-11-19 05:04:36,896 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:36" (1/1) ... [2021-11-19 05:04:36,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 05:04:36,903 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 05:04:36,903 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 05:04:36,903 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 05:04:36,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:36" (1/1) ... [2021-11-19 05:04:36,911 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 05:04:36,926 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/z3 [2021-11-19 05:04:36,950 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 05:04:37,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c28f333-ce94-46fa-802b-6bb2c91d4933/bin/uautomizer-ZXIjhQolGL/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 05:04:37,035 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 05:04:37,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 05:04:37,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 05:04:37,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 05:04:37,185 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 05:04:37,186 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 05:04:37,742 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 05:04:37,751 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 05:04:37,760 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-19 05:04:37,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:37 BoogieIcfgContainer [2021-11-19 05:04:37,763 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 05:04:37,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 05:04:37,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 05:04:37,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 05:04:37,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 05:04:36" (1/3) ... [2021-11-19 05:04:37,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd43e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:37, skipping insertion in model container [2021-11-19 05:04:37,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 05:04:36" (2/3) ... [2021-11-19 05:04:37,773 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fd43e63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 05:04:37, skipping insertion in model container [2021-11-19 05:04:37,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 05:04:37" (3/3) ... [2021-11-19 05:04:37,775 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c [2021-11-19 05:04:37,783 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 05:04:37,784 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 05:04:37,841 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 05:04:37,848 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 05:04:37,848 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-19 05:04:37,869 INFO L276 IsEmpty]: Start isEmpty. Operand has 137 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 136 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:37,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-19 05:04:37,879 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:37,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:37,881 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:37,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:37,896 INFO L85 PathProgramCache]: Analyzing trace with hash 298975739, now seen corresponding path program 1 times [2021-11-19 05:04:37,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:37,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198692499] [2021-11-19 05:04:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:37,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:38,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:38,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:38,156 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:38,157 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198692499] [2021-11-19 05:04:38,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198692499] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:38,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:38,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-19 05:04:38,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231035965] [2021-11-19 05:04:38,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:38,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 05:04:38,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:38,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 05:04:38,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:04:38,198 INFO L87 Difference]: Start difference. First operand has 137 states, 135 states have (on average 1.7481481481481482) internal successors, (236), 136 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:38,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:38,229 INFO L93 Difference]: Finished difference Result 214 states and 367 transitions. [2021-11-19 05:04:38,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 05:04:38,233 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-19 05:04:38,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:38,243 INFO L225 Difference]: With dead ends: 214 [2021-11-19 05:04:38,243 INFO L226 Difference]: Without dead ends: 133 [2021-11-19 05:04:38,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 05:04:38,250 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:38,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:38,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-19 05:04:38,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-11-19 05:04:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.7348484848484849) internal successors, (229), 132 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:38,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 229 transitions. [2021-11-19 05:04:38,298 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 229 transitions. Word has length 37 [2021-11-19 05:04:38,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:38,299 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 229 transitions. [2021-11-19 05:04:38,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:38,300 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 229 transitions. [2021-11-19 05:04:38,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-19 05:04:38,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:38,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:38,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 05:04:38,303 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:38,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:38,304 INFO L85 PathProgramCache]: Analyzing trace with hash -518672711, now seen corresponding path program 1 times [2021-11-19 05:04:38,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:38,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826655411] [2021-11-19 05:04:38,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:38,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:38,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:38,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:38,418 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826655411] [2021-11-19 05:04:38,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826655411] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:38,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:38,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:04:38,442 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109533871] [2021-11-19 05:04:38,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:38,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:04:38,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:38,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:04:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:04:38,448 INFO L87 Difference]: Start difference. First operand 133 states and 229 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:38,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:38,582 INFO L93 Difference]: Finished difference Result 213 states and 360 transitions. [2021-11-19 05:04:38,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:04:38,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-11-19 05:04:38,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:38,586 INFO L225 Difference]: With dead ends: 213 [2021-11-19 05:04:38,586 INFO L226 Difference]: Without dead ends: 133 [2021-11-19 05:04:38,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:04:38,589 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 3 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:38,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 878 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:04:38,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-11-19 05:04:38,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 133. [2021-11-19 05:04:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 132 states have (on average 1.5303030303030303) internal successors, (202), 132 states have internal predecessors, (202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:38,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 202 transitions. [2021-11-19 05:04:38,606 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 202 transitions. Word has length 37 [2021-11-19 05:04:38,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:38,607 INFO L470 AbstractCegarLoop]: Abstraction has 133 states and 202 transitions. [2021-11-19 05:04:38,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:38,607 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 202 transitions. [2021-11-19 05:04:38,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-19 05:04:38,611 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:38,611 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:38,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 05:04:38,611 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:38,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:38,612 INFO L85 PathProgramCache]: Analyzing trace with hash -707453694, now seen corresponding path program 1 times [2021-11-19 05:04:38,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:38,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460377524] [2021-11-19 05:04:38,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:38,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:38,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:38,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:38,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460377524] [2021-11-19 05:04:38,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460377524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:38,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:38,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:04:38,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49361026] [2021-11-19 05:04:38,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:38,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:04:38,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:38,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:04:38,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:38,768 INFO L87 Difference]: Start difference. First operand 133 states and 202 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:38,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:38,880 INFO L93 Difference]: Finished difference Result 276 states and 439 transitions. [2021-11-19 05:04:38,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:04:38,881 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2021-11-19 05:04:38,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:38,884 INFO L225 Difference]: With dead ends: 276 [2021-11-19 05:04:38,889 INFO L226 Difference]: Without dead ends: 200 [2021-11-19 05:04:38,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:38,892 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 101 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:38,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 355 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:04:38,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-19 05:04:38,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 197. [2021-11-19 05:04:38,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 1.5510204081632653) internal successors, (304), 196 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 304 transitions. [2021-11-19 05:04:38,932 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 304 transitions. Word has length 63 [2021-11-19 05:04:38,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:38,933 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 304 transitions. [2021-11-19 05:04:38,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:38,933 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 304 transitions. [2021-11-19 05:04:38,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-19 05:04:38,945 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:38,945 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:38,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 05:04:38,946 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:38,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:38,947 INFO L85 PathProgramCache]: Analyzing trace with hash 1995563601, now seen corresponding path program 1 times [2021-11-19 05:04:38,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:38,948 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584299505] [2021-11-19 05:04:38,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:38,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:39,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:39,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:39,098 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584299505] [2021-11-19 05:04:39,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584299505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:39,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:39,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:04:39,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632003321] [2021-11-19 05:04:39,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:39,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:04:39,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:39,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:04:39,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:39,101 INFO L87 Difference]: Start difference. First operand 197 states and 304 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:39,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:39,136 INFO L93 Difference]: Finished difference Result 463 states and 736 transitions. [2021-11-19 05:04:39,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:04:39,137 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2021-11-19 05:04:39,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:39,141 INFO L225 Difference]: With dead ends: 463 [2021-11-19 05:04:39,141 INFO L226 Difference]: Without dead ends: 323 [2021-11-19 05:04:39,142 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:39,144 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 103 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:39,145 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 368 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:39,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-19 05:04:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 319. [2021-11-19 05:04:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 1.5723270440251573) internal successors, (500), 318 states have internal predecessors, (500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:39,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 500 transitions. [2021-11-19 05:04:39,202 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 500 transitions. Word has length 65 [2021-11-19 05:04:39,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:39,205 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 500 transitions. [2021-11-19 05:04:39,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:39,206 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 500 transitions. [2021-11-19 05:04:39,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-19 05:04:39,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:39,211 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:39,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 05:04:39,212 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:39,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:39,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2137075392, now seen corresponding path program 1 times [2021-11-19 05:04:39,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:39,214 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700726067] [2021-11-19 05:04:39,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:39,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:39,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:39,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:39,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:39,392 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700726067] [2021-11-19 05:04:39,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700726067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:39,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:39,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:04:39,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536895200] [2021-11-19 05:04:39,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:39,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:04:39,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:39,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:04:39,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:39,395 INFO L87 Difference]: Start difference. First operand 319 states and 500 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:39,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:39,456 INFO L93 Difference]: Finished difference Result 815 states and 1298 transitions. [2021-11-19 05:04:39,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:04:39,457 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-11-19 05:04:39,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:39,461 INFO L225 Difference]: With dead ends: 815 [2021-11-19 05:04:39,462 INFO L226 Difference]: Without dead ends: 553 [2021-11-19 05:04:39,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:39,466 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 97 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:39,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 369 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:39,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2021-11-19 05:04:39,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 547. [2021-11-19 05:04:39,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 546 states have (on average 1.575091575091575) internal successors, (860), 546 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:39,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 860 transitions. [2021-11-19 05:04:39,531 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 860 transitions. Word has length 67 [2021-11-19 05:04:39,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:39,531 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 860 transitions. [2021-11-19 05:04:39,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:39,532 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 860 transitions. [2021-11-19 05:04:39,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-19 05:04:39,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:39,533 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:39,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 05:04:39,534 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:39,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:39,535 INFO L85 PathProgramCache]: Analyzing trace with hash -544230961, now seen corresponding path program 1 times [2021-11-19 05:04:39,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:39,535 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159485632] [2021-11-19 05:04:39,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:39,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:39,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:39,605 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:39,606 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159485632] [2021-11-19 05:04:39,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1159485632] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:39,606 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:39,606 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:04:39,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789316362] [2021-11-19 05:04:39,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:39,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:04:39,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:39,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:04:39,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:04:39,609 INFO L87 Difference]: Start difference. First operand 547 states and 860 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:39,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:39,851 INFO L93 Difference]: Finished difference Result 2339 states and 3782 transitions. [2021-11-19 05:04:39,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 05:04:39,852 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-11-19 05:04:39,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:39,866 INFO L225 Difference]: With dead ends: 2339 [2021-11-19 05:04:39,867 INFO L226 Difference]: Without dead ends: 1849 [2021-11-19 05:04:39,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:04:39,880 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 861 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 861 SdHoareTripleChecker+Valid, 1129 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:39,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [861 Valid, 1129 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:04:39,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1849 states. [2021-11-19 05:04:39,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1849 to 975. [2021-11-19 05:04:39,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 975 states, 974 states have (on average 1.5882956878850103) internal successors, (1547), 974 states have internal predecessors, (1547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:39,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 975 states to 975 states and 1547 transitions. [2021-11-19 05:04:39,952 INFO L78 Accepts]: Start accepts. Automaton has 975 states and 1547 transitions. Word has length 69 [2021-11-19 05:04:39,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:39,954 INFO L470 AbstractCegarLoop]: Abstraction has 975 states and 1547 transitions. [2021-11-19 05:04:39,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:39,954 INFO L276 IsEmpty]: Start isEmpty. Operand 975 states and 1547 transitions. [2021-11-19 05:04:39,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-19 05:04:39,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:39,956 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:39,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 05:04:39,957 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:39,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:39,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1614123231, now seen corresponding path program 1 times [2021-11-19 05:04:39,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:39,958 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219691609] [2021-11-19 05:04:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:39,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:39,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:40,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:40,046 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:40,046 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219691609] [2021-11-19 05:04:40,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219691609] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:40,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:40,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:04:40,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017318687] [2021-11-19 05:04:40,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:40,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:04:40,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:40,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:04:40,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:04:40,049 INFO L87 Difference]: Start difference. First operand 975 states and 1547 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:40,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:40,166 INFO L93 Difference]: Finished difference Result 2837 states and 4577 transitions. [2021-11-19 05:04:40,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:04:40,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2021-11-19 05:04:40,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:40,183 INFO L225 Difference]: With dead ends: 2837 [2021-11-19 05:04:40,183 INFO L226 Difference]: Without dead ends: 1919 [2021-11-19 05:04:40,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:04:40,187 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 365 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 365 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:40,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [365 Valid, 585 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:40,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2021-11-19 05:04:40,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1438. [2021-11-19 05:04:40,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1437 states have (on average 1.5984690327070286) internal successors, (2297), 1437 states have internal predecessors, (2297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:40,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2297 transitions. [2021-11-19 05:04:40,268 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2297 transitions. Word has length 70 [2021-11-19 05:04:40,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:40,268 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 2297 transitions. [2021-11-19 05:04:40,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:40,269 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2297 transitions. [2021-11-19 05:04:40,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-19 05:04:40,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:40,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 05:04:40,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 05:04:40,272 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:40,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:40,273 INFO L85 PathProgramCache]: Analyzing trace with hash -252040890, now seen corresponding path program 1 times [2021-11-19 05:04:40,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:40,273 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203492978] [2021-11-19 05:04:40,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:40,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:40,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:40,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:40,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203492978] [2021-11-19 05:04:40,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203492978] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:40,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:40,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:04:40,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626734150] [2021-11-19 05:04:40,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:40,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:04:40,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:40,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:04:40,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:04:40,365 INFO L87 Difference]: Start difference. First operand 1438 states and 2297 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:40,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:40,520 INFO L93 Difference]: Finished difference Result 4165 states and 6715 transitions. [2021-11-19 05:04:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:04:40,521 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-19 05:04:40,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:40,538 INFO L225 Difference]: With dead ends: 4165 [2021-11-19 05:04:40,538 INFO L226 Difference]: Without dead ends: 2784 [2021-11-19 05:04:40,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:04:40,542 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 363 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:40,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 661 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:04:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2021-11-19 05:04:40,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2099. [2021-11-19 05:04:40,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2099 states, 2098 states have (on average 1.5986653956148713) internal successors, (3354), 2098 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2099 states to 2099 states and 3354 transitions. [2021-11-19 05:04:40,658 INFO L78 Accepts]: Start accepts. Automaton has 2099 states and 3354 transitions. Word has length 71 [2021-11-19 05:04:40,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:40,660 INFO L470 AbstractCegarLoop]: Abstraction has 2099 states and 3354 transitions. [2021-11-19 05:04:40,660 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:40,660 INFO L276 IsEmpty]: Start isEmpty. Operand 2099 states and 3354 transitions. [2021-11-19 05:04:40,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 05:04:40,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:40,663 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:40,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 05:04:40,669 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:40,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:40,670 INFO L85 PathProgramCache]: Analyzing trace with hash -630566449, now seen corresponding path program 1 times [2021-11-19 05:04:40,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:40,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645137721] [2021-11-19 05:04:40,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:40,671 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:40,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:40,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:40,742 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645137721] [2021-11-19 05:04:40,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645137721] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:40,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:40,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:04:40,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261320315] [2021-11-19 05:04:40,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:40,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:04:40,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:40,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:04:40,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:40,744 INFO L87 Difference]: Start difference. First operand 2099 states and 3354 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:40,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:40,869 INFO L93 Difference]: Finished difference Result 4342 states and 6948 transitions. [2021-11-19 05:04:40,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:04:40,871 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-19 05:04:40,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:40,890 INFO L225 Difference]: With dead ends: 4342 [2021-11-19 05:04:40,890 INFO L226 Difference]: Without dead ends: 3126 [2021-11-19 05:04:40,892 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:40,895 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 96 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:40,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 415 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2021-11-19 05:04:41,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3124. [2021-11-19 05:04:41,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3124 states, 3123 states have (on average 1.585014409221902) internal successors, (4950), 3123 states have internal predecessors, (4950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:41,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3124 states to 3124 states and 4950 transitions. [2021-11-19 05:04:41,048 INFO L78 Accepts]: Start accepts. Automaton has 3124 states and 4950 transitions. Word has length 72 [2021-11-19 05:04:41,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:41,048 INFO L470 AbstractCegarLoop]: Abstraction has 3124 states and 4950 transitions. [2021-11-19 05:04:41,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:41,049 INFO L276 IsEmpty]: Start isEmpty. Operand 3124 states and 4950 transitions. [2021-11-19 05:04:41,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 05:04:41,050 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:41,051 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:41,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 05:04:41,051 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:41,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:41,052 INFO L85 PathProgramCache]: Analyzing trace with hash -808156936, now seen corresponding path program 1 times [2021-11-19 05:04:41,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:41,052 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58410368] [2021-11-19 05:04:41,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:41,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:41,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:41,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:41,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58410368] [2021-11-19 05:04:41,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58410368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:41,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:41,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:04:41,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525203973] [2021-11-19 05:04:41,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:41,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:04:41,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:41,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:04:41,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:04:41,111 INFO L87 Difference]: Start difference. First operand 3124 states and 4950 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:41,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:41,374 INFO L93 Difference]: Finished difference Result 9396 states and 15009 transitions. [2021-11-19 05:04:41,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 05:04:41,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-19 05:04:41,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:41,416 INFO L225 Difference]: With dead ends: 9396 [2021-11-19 05:04:41,416 INFO L226 Difference]: Without dead ends: 6460 [2021-11-19 05:04:41,422 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:04:41,422 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 361 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:41,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 661 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:04:41,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6460 states. [2021-11-19 05:04:41,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6460 to 4776. [2021-11-19 05:04:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4776 states, 4775 states have (on average 1.584083769633508) internal successors, (7564), 4775 states have internal predecessors, (7564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:41,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4776 states to 4776 states and 7564 transitions. [2021-11-19 05:04:41,766 INFO L78 Accepts]: Start accepts. Automaton has 4776 states and 7564 transitions. Word has length 72 [2021-11-19 05:04:41,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:41,770 INFO L470 AbstractCegarLoop]: Abstraction has 4776 states and 7564 transitions. [2021-11-19 05:04:41,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:41,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4776 states and 7564 transitions. [2021-11-19 05:04:41,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 05:04:41,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:41,772 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:41,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 05:04:41,773 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:41,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:41,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1968035874, now seen corresponding path program 1 times [2021-11-19 05:04:41,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:41,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391167291] [2021-11-19 05:04:41,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:41,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:41,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:41,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:41,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:41,832 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391167291] [2021-11-19 05:04:41,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391167291] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:41,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:41,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:04:41,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723568997] [2021-11-19 05:04:41,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:41,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:04:41,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:41,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:04:41,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:41,835 INFO L87 Difference]: Start difference. First operand 4776 states and 7564 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:42,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:42,131 INFO L93 Difference]: Finished difference Result 10472 states and 16650 transitions. [2021-11-19 05:04:42,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:04:42,132 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-19 05:04:42,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:42,199 INFO L225 Difference]: With dead ends: 10472 [2021-11-19 05:04:42,199 INFO L226 Difference]: Without dead ends: 7115 [2021-11-19 05:04:42,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:42,207 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 102 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:42,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 443 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:42,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7115 states. [2021-11-19 05:04:42,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7115 to 7113. [2021-11-19 05:04:42,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7113 states, 7112 states have (on average 1.5752249718785152) internal successors, (11203), 7112 states have internal predecessors, (11203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:42,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7113 states to 7113 states and 11203 transitions. [2021-11-19 05:04:42,592 INFO L78 Accepts]: Start accepts. Automaton has 7113 states and 11203 transitions. Word has length 72 [2021-11-19 05:04:42,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:42,593 INFO L470 AbstractCegarLoop]: Abstraction has 7113 states and 11203 transitions. [2021-11-19 05:04:42,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:42,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7113 states and 11203 transitions. [2021-11-19 05:04:42,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-19 05:04:42,596 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:42,596 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:42,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 05:04:42,597 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:42,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:42,597 INFO L85 PathProgramCache]: Analyzing trace with hash 134390635, now seen corresponding path program 1 times [2021-11-19 05:04:42,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:42,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066309860] [2021-11-19 05:04:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:42,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:42,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:42,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:42,640 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066309860] [2021-11-19 05:04:42,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066309860] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:42,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:42,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:04:42,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223575735] [2021-11-19 05:04:42,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:42,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:04:42,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:42,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:04:42,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:42,642 INFO L87 Difference]: Start difference. First operand 7113 states and 11203 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:43,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:43,062 INFO L93 Difference]: Finished difference Result 15869 states and 25266 transitions. [2021-11-19 05:04:43,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:04:43,063 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-19 05:04:43,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:43,091 INFO L225 Difference]: With dead ends: 15869 [2021-11-19 05:04:43,092 INFO L226 Difference]: Without dead ends: 10691 [2021-11-19 05:04:43,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:43,102 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 108 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:43,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 464 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:43,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10691 states. [2021-11-19 05:04:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10691 to 10689. [2021-11-19 05:04:43,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10689 states, 10688 states have (on average 1.5716691616766467) internal successors, (16798), 10688 states have internal predecessors, (16798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:43,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10689 states to 10689 states and 16798 transitions. [2021-11-19 05:04:43,672 INFO L78 Accepts]: Start accepts. Automaton has 10689 states and 16798 transitions. Word has length 72 [2021-11-19 05:04:43,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:43,673 INFO L470 AbstractCegarLoop]: Abstraction has 10689 states and 16798 transitions. [2021-11-19 05:04:43,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:43,674 INFO L276 IsEmpty]: Start isEmpty. Operand 10689 states and 16798 transitions. [2021-11-19 05:04:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-19 05:04:43,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:43,675 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:43,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 05:04:43,675 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:43,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:43,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1377255792, now seen corresponding path program 1 times [2021-11-19 05:04:43,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:43,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690396883] [2021-11-19 05:04:43,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:43,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:43,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:43,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:43,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:43,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690396883] [2021-11-19 05:04:43,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690396883] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:43,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:43,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:04:43,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735480784] [2021-11-19 05:04:43,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:43,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:04:43,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:43,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:04:43,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:04:43,830 INFO L87 Difference]: Start difference. First operand 10689 states and 16798 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:44,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:44,322 INFO L93 Difference]: Finished difference Result 21301 states and 33492 transitions. [2021-11-19 05:04:44,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:04:44,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-19 05:04:44,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:44,350 INFO L225 Difference]: With dead ends: 21301 [2021-11-19 05:04:44,351 INFO L226 Difference]: Without dead ends: 10691 [2021-11-19 05:04:44,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:04:44,369 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 362 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:44,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 543 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:44,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10691 states. [2021-11-19 05:04:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10691 to 10689. [2021-11-19 05:04:44,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10689 states, 10688 states have (on average 1.5599738023952097) internal successors, (16673), 10688 states have internal predecessors, (16673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:44,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10689 states to 10689 states and 16673 transitions. [2021-11-19 05:04:44,901 INFO L78 Accepts]: Start accepts. Automaton has 10689 states and 16673 transitions. Word has length 74 [2021-11-19 05:04:44,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:44,901 INFO L470 AbstractCegarLoop]: Abstraction has 10689 states and 16673 transitions. [2021-11-19 05:04:44,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:44,902 INFO L276 IsEmpty]: Start isEmpty. Operand 10689 states and 16673 transitions. [2021-11-19 05:04:44,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-19 05:04:44,903 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:44,903 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:44,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 05:04:44,903 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:44,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:44,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1698241801, now seen corresponding path program 1 times [2021-11-19 05:04:44,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:44,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279438242] [2021-11-19 05:04:44,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:44,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:45,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:45,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:45,039 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279438242] [2021-11-19 05:04:45,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279438242] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:45,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:45,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:04:45,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443550497] [2021-11-19 05:04:45,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:45,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:04:45,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:45,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:04:45,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:04:45,041 INFO L87 Difference]: Start difference. First operand 10689 states and 16673 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:45,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:45,834 INFO L93 Difference]: Finished difference Result 30615 states and 47912 transitions. [2021-11-19 05:04:45,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:04:45,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-19 05:04:45,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:45,884 INFO L225 Difference]: With dead ends: 30615 [2021-11-19 05:04:45,884 INFO L226 Difference]: Without dead ends: 20005 [2021-11-19 05:04:45,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-11-19 05:04:45,901 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 356 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:45,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [356 Valid, 547 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:45,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20005 states. [2021-11-19 05:04:46,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20005 to 20003. [2021-11-19 05:04:46,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20003 states, 20002 states have (on average 1.5475452454754524) internal successors, (30954), 20002 states have internal predecessors, (30954), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:46,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20003 states to 20003 states and 30954 transitions. [2021-11-19 05:04:46,722 INFO L78 Accepts]: Start accepts. Automaton has 20003 states and 30954 transitions. Word has length 77 [2021-11-19 05:04:46,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:46,723 INFO L470 AbstractCegarLoop]: Abstraction has 20003 states and 30954 transitions. [2021-11-19 05:04:46,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:46,723 INFO L276 IsEmpty]: Start isEmpty. Operand 20003 states and 30954 transitions. [2021-11-19 05:04:46,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-19 05:04:46,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:46,725 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:46,725 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 05:04:46,725 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:46,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:46,726 INFO L85 PathProgramCache]: Analyzing trace with hash 677312633, now seen corresponding path program 1 times [2021-11-19 05:04:46,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:46,726 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088956621] [2021-11-19 05:04:46,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:46,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:46,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:04:46,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:46,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088956621] [2021-11-19 05:04:46,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088956621] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:46,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:46,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 05:04:46,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862845215] [2021-11-19 05:04:46,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:46,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 05:04:46,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:46,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 05:04:46,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 05:04:46,888 INFO L87 Difference]: Start difference. First operand 20003 states and 30954 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:48,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:48,392 INFO L93 Difference]: Finished difference Result 39191 states and 60008 transitions. [2021-11-19 05:04:48,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 05:04:48,393 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-19 05:04:48,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:48,501 INFO L225 Difference]: With dead ends: 39191 [2021-11-19 05:04:48,501 INFO L226 Difference]: Without dead ends: 39189 [2021-11-19 05:04:48,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-19 05:04:48,512 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 917 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 1064 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:48,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 1064 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:48,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39189 states. [2021-11-19 05:04:49,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39189 to 21089. [2021-11-19 05:04:49,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21089 states, 21088 states have (on average 1.518920713201821) internal successors, (32031), 21088 states have internal predecessors, (32031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:49,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21089 states to 21089 states and 32031 transitions. [2021-11-19 05:04:49,662 INFO L78 Accepts]: Start accepts. Automaton has 21089 states and 32031 transitions. Word has length 78 [2021-11-19 05:04:49,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:49,663 INFO L470 AbstractCegarLoop]: Abstraction has 21089 states and 32031 transitions. [2021-11-19 05:04:49,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:49,663 INFO L276 IsEmpty]: Start isEmpty. Operand 21089 states and 32031 transitions. [2021-11-19 05:04:49,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 05:04:49,666 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:49,666 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:49,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 05:04:49,667 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:49,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:49,667 INFO L85 PathProgramCache]: Analyzing trace with hash -931565963, now seen corresponding path program 1 times [2021-11-19 05:04:49,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:49,668 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864089006] [2021-11-19 05:04:49,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:49,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:49,751 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-11-19 05:04:49,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:49,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864089006] [2021-11-19 05:04:49,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864089006] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:49,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:49,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:04:49,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461762927] [2021-11-19 05:04:49,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:49,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:04:49,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:49,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:04:49,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:04:49,756 INFO L87 Difference]: Start difference. First operand 21089 states and 32031 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:51,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:51,161 INFO L93 Difference]: Finished difference Result 51599 states and 78693 transitions. [2021-11-19 05:04:51,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:04:51,162 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-19 05:04:51,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:51,249 INFO L225 Difference]: With dead ends: 51599 [2021-11-19 05:04:51,249 INFO L226 Difference]: Without dead ends: 41597 [2021-11-19 05:04:51,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:04:51,276 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 463 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:51,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 831 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:04:51,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41597 states. [2021-11-19 05:04:52,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41597 to 32429. [2021-11-19 05:04:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32429 states, 32428 states have (on average 1.5179782903663501) internal successors, (49225), 32428 states have internal predecessors, (49225), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:52,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32429 states to 32429 states and 49225 transitions. [2021-11-19 05:04:52,865 INFO L78 Accepts]: Start accepts. Automaton has 32429 states and 49225 transitions. Word has length 105 [2021-11-19 05:04:52,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:52,865 INFO L470 AbstractCegarLoop]: Abstraction has 32429 states and 49225 transitions. [2021-11-19 05:04:52,865 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:52,866 INFO L276 IsEmpty]: Start isEmpty. Operand 32429 states and 49225 transitions. [2021-11-19 05:04:52,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 05:04:52,869 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:52,869 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:52,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 05:04:52,870 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:52,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:52,870 INFO L85 PathProgramCache]: Analyzing trace with hash 2025931908, now seen corresponding path program 1 times [2021-11-19 05:04:52,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:52,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168722228] [2021-11-19 05:04:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:52,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:52,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:52,952 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-19 05:04:52,952 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:52,952 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168722228] [2021-11-19 05:04:52,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168722228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:52,953 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:52,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 05:04:52,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510477980] [2021-11-19 05:04:52,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:52,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 05:04:52,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:52,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 05:04:52,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 05:04:52,955 INFO L87 Difference]: Start difference. First operand 32429 states and 49225 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:54,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:54,853 INFO L93 Difference]: Finished difference Result 55607 states and 84829 transitions. [2021-11-19 05:04:54,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 05:04:54,853 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-19 05:04:54,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:54,934 INFO L225 Difference]: With dead ends: 55607 [2021-11-19 05:04:54,935 INFO L226 Difference]: Without dead ends: 45605 [2021-11-19 05:04:54,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-11-19 05:04:54,953 INFO L933 BasicCegarLoop]: 321 mSDtfsCounter, 457 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:54,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 891 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 05:04:54,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45605 states. [2021-11-19 05:04:56,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45605 to 43951. [2021-11-19 05:04:56,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43951 states, 43950 states have (on average 1.5191581342434586) internal successors, (66767), 43950 states have internal predecessors, (66767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:56,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43951 states to 43951 states and 66767 transitions. [2021-11-19 05:04:56,574 INFO L78 Accepts]: Start accepts. Automaton has 43951 states and 66767 transitions. Word has length 105 [2021-11-19 05:04:56,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:04:56,575 INFO L470 AbstractCegarLoop]: Abstraction has 43951 states and 66767 transitions. [2021-11-19 05:04:56,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 43951 states and 66767 transitions. [2021-11-19 05:04:56,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 05:04:56,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:04:56,579 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:04:56,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 05:04:56,579 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:04:56,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:04:56,580 INFO L85 PathProgramCache]: Analyzing trace with hash -166608879, now seen corresponding path program 1 times [2021-11-19 05:04:56,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:04:56,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889230491] [2021-11-19 05:04:56,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:04:56,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:04:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:04:56,630 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:04:56,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:04:56,631 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889230491] [2021-11-19 05:04:56,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889230491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:04:56,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:04:56,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:04:56,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859793526] [2021-11-19 05:04:56,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:04:56,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:04:56,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:04:56,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:04:56,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:56,633 INFO L87 Difference]: Start difference. First operand 43951 states and 66767 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:04:59,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:04:59,171 INFO L93 Difference]: Finished difference Result 91773 states and 140139 transitions. [2021-11-19 05:04:59,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:04:59,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-11-19 05:04:59,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:04:59,268 INFO L225 Difference]: With dead ends: 91773 [2021-11-19 05:04:59,268 INFO L226 Difference]: Without dead ends: 81511 [2021-11-19 05:04:59,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:04:59,286 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 85 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 373 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:04:59,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 373 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:04:59,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81511 states. [2021-11-19 05:05:02,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81511 to 81394. [2021-11-19 05:05:02,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81394 states, 81393 states have (on average 1.5231285245659947) internal successors, (123972), 81393 states have internal predecessors, (123972), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:05:02,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81394 states to 81394 states and 123972 transitions. [2021-11-19 05:05:02,485 INFO L78 Accepts]: Start accepts. Automaton has 81394 states and 123972 transitions. Word has length 105 [2021-11-19 05:05:02,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:02,486 INFO L470 AbstractCegarLoop]: Abstraction has 81394 states and 123972 transitions. [2021-11-19 05:05:02,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:05:02,486 INFO L276 IsEmpty]: Start isEmpty. Operand 81394 states and 123972 transitions. [2021-11-19 05:05:02,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-19 05:05:02,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:02,494 INFO L514 BasicCegarLoop]: 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] [2021-11-19 05:05:02,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 05:05:02,494 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:05:02,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:02,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1581376920, now seen corresponding path program 1 times [2021-11-19 05:05:02,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:02,495 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886224427] [2021-11-19 05:05:02,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:02,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:02,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:02,580 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 05:05:02,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:02,580 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886224427] [2021-11-19 05:05:02,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886224427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:02,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:02,581 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 05:05:02,581 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2894164] [2021-11-19 05:05:02,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:02,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 05:05:02,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:02,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 05:05:02,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:05:02,584 INFO L87 Difference]: Start difference. First operand 81394 states and 123972 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:05:08,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 05:05:08,122 INFO L93 Difference]: Finished difference Result 241522 states and 367567 transitions. [2021-11-19 05:05:08,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 05:05:08,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 106 [2021-11-19 05:05:08,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 05:05:08,360 INFO L225 Difference]: With dead ends: 241522 [2021-11-19 05:05:08,360 INFO L226 Difference]: Without dead ends: 160199 [2021-11-19 05:05:08,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 05:05:08,425 INFO L933 BasicCegarLoop]: 257 mSDtfsCounter, 131 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 05:05:08,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 451 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 05:05:08,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160199 states. [2021-11-19 05:05:14,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160199 to 160197. [2021-11-19 05:05:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160197 states, 160196 states have (on average 1.5108804214836824) internal successors, (242037), 160196 states have internal predecessors, (242037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:05:15,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160197 states to 160197 states and 242037 transitions. [2021-11-19 05:05:15,016 INFO L78 Accepts]: Start accepts. Automaton has 160197 states and 242037 transitions. Word has length 106 [2021-11-19 05:05:15,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 05:05:15,016 INFO L470 AbstractCegarLoop]: Abstraction has 160197 states and 242037 transitions. [2021-11-19 05:05:15,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 05:05:15,017 INFO L276 IsEmpty]: Start isEmpty. Operand 160197 states and 242037 transitions. [2021-11-19 05:05:15,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-19 05:05:15,021 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 05:05:15,022 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-11-19 05:05:15,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 05:05:15,022 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 05:05:15,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 05:05:15,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1079524893, now seen corresponding path program 1 times [2021-11-19 05:05:15,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-19 05:05:15,023 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300987950] [2021-11-19 05:05:15,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 05:05:15,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 05:05:15,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 05:05:15,473 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 05:05:15,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-19 05:05:15,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300987950] [2021-11-19 05:05:15,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300987950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 05:05:15,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 05:05:15,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 05:05:15,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873922166] [2021-11-19 05:05:15,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 05:05:15,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 05:05:15,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-19 05:05:15,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 05:05:15,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-19 05:05:15,475 INFO L87 Difference]: Start difference. First operand 160197 states and 242037 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)