./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 2bcf8e94e45f6297ffcab2cc85820f358b499c9f0c3c1268c03065e80498ea32 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 14:44:53,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 14:44:53,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 14:44:53,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 14:44:53,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 14:44:53,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 14:44:53,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 14:44:53,895 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 14:44:53,896 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 14:44:53,897 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 14:44:53,898 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 14:44:53,899 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 14:44:53,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 14:44:53,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 14:44:53,916 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 14:44:53,917 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 14:44:53,918 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 14:44:53,918 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 14:44:53,919 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 14:44:53,921 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 14:44:53,922 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 14:44:53,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 14:44:53,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 14:44:53,929 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 14:44:53,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 14:44:53,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 14:44:53,935 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 14:44:53,935 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 14:44:53,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 14:44:53,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 14:44:53,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 14:44:53,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 14:44:53,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 14:44:53,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 14:44:53,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 14:44:53,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 14:44:53,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 14:44:53,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 14:44:53,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 14:44:53,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 14:44:53,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 14:44:53,945 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 14:44:53,974 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 14:44:53,974 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 14:44:53,975 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 14:44:53,975 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 14:44:53,976 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 14:44:53,976 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 14:44:53,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 14:44:53,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 14:44:53,977 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 14:44:53,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 14:44:53,978 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 14:44:53,978 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 14:44:53,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 14:44:53,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 14:44:53,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 14:44:53,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 14:44:53,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 14:44:53,979 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 14:44:53,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 14:44:53,979 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 14:44:53,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 14:44:53,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 14:44:53,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 14:44:53,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 14:44:53,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:44:53,981 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 14:44:53,981 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 14:44:53,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 14:44:53,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 14:44:53,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 14:44:53,982 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 14:44:53,982 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 14:44:53,982 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 14:44:53,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 14:44:53,983 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2bcf8e94e45f6297ffcab2cc85820f358b499c9f0c3c1268c03065e80498ea32 [2021-12-21 14:44:54,186 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 14:44:54,219 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 14:44:54,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 14:44:54,222 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 14:44:54,223 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 14:44:54,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c [2021-12-21 14:44:54,280 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c35e9c73/37a85cddd5364fdeafb4fadb17fa8249/FLAGb4f0ea0fb [2021-12-21 14:44:54,952 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 14:44:54,953 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c [2021-12-21 14:44:54,994 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c35e9c73/37a85cddd5364fdeafb4fadb17fa8249/FLAGb4f0ea0fb [2021-12-21 14:44:55,092 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c35e9c73/37a85cddd5364fdeafb4fadb17fa8249 [2021-12-21 14:44:55,096 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 14:44:55,097 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 14:44:55,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 14:44:55,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 14:44:55,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 14:44:55,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:44:55" (1/1) ... [2021-12-21 14:44:55,104 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31283316 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:55, skipping insertion in model container [2021-12-21 14:44:55,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 02:44:55" (1/1) ... [2021-12-21 14:44:55,110 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 14:44:55,213 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 14:44:55,597 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c[20454,20467] [2021-12-21 14:44:55,640 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c[22791,22804] [2021-12-21 14:44:56,253 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:44:56,266 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 14:44:56,320 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c[20454,20467] [2021-12-21 14:44:56,324 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c[22791,22804] [2021-12-21 14:44:56,743 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 14:44:56,767 INFO L208 MainTranslator]: Completed translation [2021-12-21 14:44:56,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:56 WrapperNode [2021-12-21 14:44:56,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 14:44:56,770 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 14:44:56,770 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 14:44:56,770 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 14:44:56,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:56" (1/1) ... [2021-12-21 14:44:56,832 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:56" (1/1) ... [2021-12-21 14:44:57,149 INFO L137 Inliner]: procedures = 39, calls = 24, calls flagged for inlining = 19, calls inlined = 19, statements flattened = 5208 [2021-12-21 14:44:57,150 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 14:44:57,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 14:44:57,151 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 14:44:57,151 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 14:44:57,158 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:56" (1/1) ... [2021-12-21 14:44:57,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:56" (1/1) ... [2021-12-21 14:44:57,279 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:56" (1/1) ... [2021-12-21 14:44:57,283 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:56" (1/1) ... [2021-12-21 14:44:57,460 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:56" (1/1) ... [2021-12-21 14:44:57,493 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:56" (1/1) ... [2021-12-21 14:44:57,519 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:56" (1/1) ... [2021-12-21 14:44:57,591 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 14:44:57,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 14:44:57,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 14:44:57,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 14:44:57,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:56" (1/1) ... [2021-12-21 14:44:57,601 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 14:44:57,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 14:44:57,637 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 14:44:57,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 14:44:57,753 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 14:44:57,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 14:44:57,754 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 14:44:57,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 14:44:57,844 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 14:44:57,846 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 14:45:01,343 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 14:45:01,365 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 14:45:01,366 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-21 14:45:01,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:45:01 BoogieIcfgContainer [2021-12-21 14:45:01,369 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 14:45:01,371 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 14:45:01,371 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 14:45:01,374 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 14:45:01,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 02:44:55" (1/3) ... [2021-12-21 14:45:01,375 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c171fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:45:01, skipping insertion in model container [2021-12-21 14:45:01,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 02:44:56" (2/3) ... [2021-12-21 14:45:01,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c171fbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 02:45:01, skipping insertion in model container [2021-12-21 14:45:01,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 02:45:01" (3/3) ... [2021-12-21 14:45:01,377 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.ufo.UNBOUNDED.pals+Problem12_label03.c [2021-12-21 14:45:01,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 14:45:01,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-21 14:45:01,436 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 14:45:01,441 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 [2021-12-21 14:45:01,442 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-21 14:45:01,472 INFO L276 IsEmpty]: Start isEmpty. Operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:01,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-12-21 14:45:01,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:01,479 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] [2021-12-21 14:45:01,479 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:01,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:01,484 INFO L85 PathProgramCache]: Analyzing trace with hash -653213147, now seen corresponding path program 1 times [2021-12-21 14:45:01,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:01,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689288419] [2021-12-21 14:45:01,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:01,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:01,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:01,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:01,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689288419] [2021-12-21 14:45:01,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689288419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:01,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:01,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:45:01,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069789630] [2021-12-21 14:45:01,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:01,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:01,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:01,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:01,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:01,805 INFO L87 Difference]: Start difference. First operand has 946 states, 943 states have (on average 1.8971367974549311) internal successors, (1789), 945 states have internal predecessors, (1789), 0 states have call successors, (0), 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 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:05,123 INFO L93 Difference]: Finished difference Result 2589 states and 4970 transitions. [2021-12-21 14:45:05,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:05,126 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 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 20 [2021-12-21 14:45:05,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:05,146 INFO L225 Difference]: With dead ends: 2589 [2021-12-21 14:45:05,146 INFO L226 Difference]: Without dead ends: 1631 [2021-12-21 14:45:05,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:05,155 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 1095 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 2437 mSolverCounterSat, 771 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 771 IncrementalHoareTripleChecker+Valid, 2437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:05,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 375 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [771 Valid, 2437 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-21 14:45:05,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2021-12-21 14:45:05,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2021-12-21 14:45:05,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.8385512584407613) internal successors, (2995), 1630 states have internal predecessors, (2995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:05,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2995 transitions. [2021-12-21 14:45:05,312 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2995 transitions. Word has length 20 [2021-12-21 14:45:05,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:05,313 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 2995 transitions. [2021-12-21 14:45:05,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:05,314 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2995 transitions. [2021-12-21 14:45:05,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-21 14:45:05,315 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:05,315 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] [2021-12-21 14:45:05,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 14:45:05,316 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:05,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:05,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1343709944, now seen corresponding path program 1 times [2021-12-21 14:45:05,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:05,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885643947] [2021-12-21 14:45:05,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:05,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:05,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:05,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:05,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885643947] [2021-12-21 14:45:05,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885643947] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:05,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:05,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 14:45:05,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119334559] [2021-12-21 14:45:05,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:05,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 14:45:05,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:05,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 14:45:05,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:45:05,383 INFO L87 Difference]: Start difference. First operand 1631 states and 2995 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:05,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:05,472 INFO L93 Difference]: Finished difference Result 1705 states and 3110 transitions. [2021-12-21 14:45:05,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 14:45:05,472 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2021-12-21 14:45:05,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:05,479 INFO L225 Difference]: With dead ends: 1705 [2021-12-21 14:45:05,479 INFO L226 Difference]: Without dead ends: 1631 [2021-12-21 14:45:05,480 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 [2021-12-21 14:45:05,482 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 3 mSDsluCounter, 4909 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6563 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:05,482 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6563 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:05,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1631 states. [2021-12-21 14:45:05,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1631 to 1631. [2021-12-21 14:45:05,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1631 states, 1629 states have (on average 1.8078575813382443) internal successors, (2945), 1630 states have internal predecessors, (2945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1631 states to 1631 states and 2945 transitions. [2021-12-21 14:45:05,518 INFO L78 Accepts]: Start accepts. Automaton has 1631 states and 2945 transitions. Word has length 42 [2021-12-21 14:45:05,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:05,519 INFO L470 AbstractCegarLoop]: Abstraction has 1631 states and 2945 transitions. [2021-12-21 14:45:05,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:05,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1631 states and 2945 transitions. [2021-12-21 14:45:05,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-21 14:45:05,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:05,522 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 14:45:05,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 14:45:05,523 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:05,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:05,524 INFO L85 PathProgramCache]: Analyzing trace with hash 472434540, now seen corresponding path program 1 times [2021-12-21 14:45:05,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:05,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542861580] [2021-12-21 14:45:05,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:05,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:05,669 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:05,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:05,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542861580] [2021-12-21 14:45:05,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542861580] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:05,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:05,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:05,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505947640] [2021-12-21 14:45:05,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:05,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 14:45:05,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:05,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 14:45:05,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-21 14:45:05,672 INFO L87 Difference]: Start difference. First operand 1631 states and 2945 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:11,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:11,110 INFO L93 Difference]: Finished difference Result 5388 states and 9835 transitions. [2021-12-21 14:45:11,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 14:45:11,119 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-12-21 14:45:11,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:11,135 INFO L225 Difference]: With dead ends: 5388 [2021-12-21 14:45:11,135 INFO L226 Difference]: Without dead ends: 3884 [2021-12-21 14:45:11,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-21 14:45:11,144 INFO L933 BasicCegarLoop]: 860 mSDtfsCounter, 2504 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 1153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2504 SdHoareTripleChecker+Valid, 878 SdHoareTripleChecker+Invalid, 6307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1153 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:11,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2504 Valid, 878 Invalid, 6307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1153 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-21 14:45:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2021-12-21 14:45:11,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3884. [2021-12-21 14:45:11,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3882 states have (on average 1.564657393096342) internal successors, (6074), 3883 states have internal predecessors, (6074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:11,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 6074 transitions. [2021-12-21 14:45:11,219 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 6074 transitions. Word has length 89 [2021-12-21 14:45:11,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:11,220 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 6074 transitions. [2021-12-21 14:45:11,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:11,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 6074 transitions. [2021-12-21 14:45:11,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:45:11,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:11,225 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 14:45:11,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 14:45:11,226 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:11,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:11,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1875829137, now seen corresponding path program 1 times [2021-12-21 14:45:11,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:11,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571954665] [2021-12-21 14:45:11,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:11,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:11,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:11,323 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 14:45:11,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:11,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571954665] [2021-12-21 14:45:11,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1571954665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:11,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:11,325 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-21 14:45:11,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953766339] [2021-12-21 14:45:11,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:11,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:11,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:11,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:11,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:11,333 INFO L87 Difference]: Start difference. First operand 3884 states and 6074 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:13,884 INFO L93 Difference]: Finished difference Result 10645 states and 17126 transitions. [2021-12-21 14:45:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:13,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 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 91 [2021-12-21 14:45:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:13,910 INFO L225 Difference]: With dead ends: 10645 [2021-12-21 14:45:13,910 INFO L226 Difference]: Without dead ends: 6888 [2021-12-21 14:45:13,917 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:13,918 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 892 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 2261 mSolverCounterSat, 652 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 641 SdHoareTripleChecker+Invalid, 2913 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 652 IncrementalHoareTripleChecker+Valid, 2261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:13,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 641 Invalid, 2913 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [652 Valid, 2261 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-21 14:45:13,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6888 states. [2021-12-21 14:45:14,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6888 to 6888. [2021-12-21 14:45:14,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6888 states, 6886 states have (on average 1.4228870171362185) internal successors, (9798), 6887 states have internal predecessors, (9798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6888 states to 6888 states and 9798 transitions. [2021-12-21 14:45:14,043 INFO L78 Accepts]: Start accepts. Automaton has 6888 states and 9798 transitions. Word has length 91 [2021-12-21 14:45:14,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:14,043 INFO L470 AbstractCegarLoop]: Abstraction has 6888 states and 9798 transitions. [2021-12-21 14:45:14,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 2 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:14,044 INFO L276 IsEmpty]: Start isEmpty. Operand 6888 states and 9798 transitions. [2021-12-21 14:45:14,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:45:14,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:14,045 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:14,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 14:45:14,046 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:14,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:14,046 INFO L85 PathProgramCache]: Analyzing trace with hash -461668761, now seen corresponding path program 1 times [2021-12-21 14:45:14,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:14,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572701146] [2021-12-21 14:45:14,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:14,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:14,096 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:14,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:14,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572701146] [2021-12-21 14:45:14,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572701146] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:14,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:14,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:14,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375688370] [2021-12-21 14:45:14,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:14,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:14,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:14,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:14,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:14,099 INFO L87 Difference]: Start difference. First operand 6888 states and 9798 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:14,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:14,144 INFO L93 Difference]: Finished difference Result 7022 states and 10010 transitions. [2021-12-21 14:45:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:14,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-21 14:45:14,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:14,168 INFO L225 Difference]: With dead ends: 7022 [2021-12-21 14:45:14,169 INFO L226 Difference]: Without dead ends: 6952 [2021-12-21 14:45:14,173 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 [2021-12-21 14:45:14,174 INFO L933 BasicCegarLoop]: 1674 mSDtfsCounter, 1532 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 1791 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 [2021-12-21 14:45:14,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1532 Valid, 1791 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:14,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6952 states. [2021-12-21 14:45:14,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6952 to 6950. [2021-12-21 14:45:14,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6950 states, 6948 states have (on average 1.4244386873920554) internal successors, (9897), 6949 states have internal predecessors, (9897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:14,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6950 states to 6950 states and 9897 transitions. [2021-12-21 14:45:14,304 INFO L78 Accepts]: Start accepts. Automaton has 6950 states and 9897 transitions. Word has length 91 [2021-12-21 14:45:14,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:14,307 INFO L470 AbstractCegarLoop]: Abstraction has 6950 states and 9897 transitions. [2021-12-21 14:45:14,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:14,307 INFO L276 IsEmpty]: Start isEmpty. Operand 6950 states and 9897 transitions. [2021-12-21 14:45:14,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:45:14,313 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:14,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:14,313 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 14:45:14,313 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:14,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:14,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1207251491, now seen corresponding path program 1 times [2021-12-21 14:45:14,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:14,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409069619] [2021-12-21 14:45:14,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:14,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:14,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:14,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:14,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:14,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409069619] [2021-12-21 14:45:14,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409069619] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:14,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:14,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:14,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824453865] [2021-12-21 14:45:14,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:14,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:14,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:14,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:14,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:14,411 INFO L87 Difference]: Start difference. First operand 6950 states and 9897 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:14,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:14,460 INFO L93 Difference]: Finished difference Result 7202 states and 10297 transitions. [2021-12-21 14:45:14,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:14,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-21 14:45:14,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:14,492 INFO L225 Difference]: With dead ends: 7202 [2021-12-21 14:45:14,493 INFO L226 Difference]: Without dead ends: 7070 [2021-12-21 14:45:14,496 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 [2021-12-21 14:45:14,497 INFO L933 BasicCegarLoop]: 1669 mSDtfsCounter, 1528 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 1790 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 [2021-12-21 14:45:14,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 1790 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:14,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7070 states. [2021-12-21 14:45:14,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7070 to 7068. [2021-12-21 14:45:14,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7068 states, 7066 states have (on average 1.4271157656382678) internal successors, (10084), 7067 states have internal predecessors, (10084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:14,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 10084 transitions. [2021-12-21 14:45:14,623 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 10084 transitions. Word has length 91 [2021-12-21 14:45:14,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:14,624 INFO L470 AbstractCegarLoop]: Abstraction has 7068 states and 10084 transitions. [2021-12-21 14:45:14,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:14,625 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 10084 transitions. [2021-12-21 14:45:14,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:45:14,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:14,626 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:14,626 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 14:45:14,626 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:14,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:14,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1147684947, now seen corresponding path program 1 times [2021-12-21 14:45:14,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:14,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500870637] [2021-12-21 14:45:14,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:14,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:14,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:14,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:14,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:14,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500870637] [2021-12-21 14:45:14,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500870637] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:14,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:14,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:14,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857986724] [2021-12-21 14:45:14,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:14,698 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:14,698 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:14,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:14,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:14,700 INFO L87 Difference]: Start difference. First operand 7068 states and 10084 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:14,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:14,796 INFO L93 Difference]: Finished difference Result 7544 states and 10838 transitions. [2021-12-21 14:45:14,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:14,797 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-21 14:45:14,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:14,811 INFO L225 Difference]: With dead ends: 7544 [2021-12-21 14:45:14,811 INFO L226 Difference]: Without dead ends: 7294 [2021-12-21 14:45:14,815 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 [2021-12-21 14:45:14,816 INFO L933 BasicCegarLoop]: 1664 mSDtfsCounter, 1524 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1524 SdHoareTripleChecker+Valid, 1789 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 [2021-12-21 14:45:14,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1524 Valid, 1789 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:14,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7294 states. [2021-12-21 14:45:14,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7294 to 7292. [2021-12-21 14:45:14,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7292 states, 7290 states have (on average 1.4315500685871057) internal successors, (10436), 7291 states have internal predecessors, (10436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:14,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7292 states to 7292 states and 10436 transitions. [2021-12-21 14:45:14,968 INFO L78 Accepts]: Start accepts. Automaton has 7292 states and 10436 transitions. Word has length 91 [2021-12-21 14:45:14,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:14,968 INFO L470 AbstractCegarLoop]: Abstraction has 7292 states and 10436 transitions. [2021-12-21 14:45:14,969 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:14,969 INFO L276 IsEmpty]: Start isEmpty. Operand 7292 states and 10436 transitions. [2021-12-21 14:45:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:45:14,970 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:14,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:14,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 14:45:14,971 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:14,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:14,972 INFO L85 PathProgramCache]: Analyzing trace with hash -446599735, now seen corresponding path program 1 times [2021-12-21 14:45:14,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:14,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443057359] [2021-12-21 14:45:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:14,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:15,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:15,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:15,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443057359] [2021-12-21 14:45:15,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443057359] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:15,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:15,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:15,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327861727] [2021-12-21 14:45:15,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:15,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:15,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:15,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:15,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:15,030 INFO L87 Difference]: Start difference. First operand 7292 states and 10436 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:15,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:15,103 INFO L93 Difference]: Finished difference Result 8192 states and 11854 transitions. [2021-12-21 14:45:15,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:15,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-21 14:45:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:15,116 INFO L225 Difference]: With dead ends: 8192 [2021-12-21 14:45:15,116 INFO L226 Difference]: Without dead ends: 7718 [2021-12-21 14:45:15,120 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 [2021-12-21 14:45:15,120 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 1520 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 1788 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 [2021-12-21 14:45:15,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1520 Valid, 1788 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:15,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7718 states. [2021-12-21 14:45:15,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7718 to 7716. [2021-12-21 14:45:15,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7716 states, 7714 states have (on average 1.438423645320197) internal successors, (11096), 7715 states have internal predecessors, (11096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:15,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7716 states to 7716 states and 11096 transitions. [2021-12-21 14:45:15,283 INFO L78 Accepts]: Start accepts. Automaton has 7716 states and 11096 transitions. Word has length 91 [2021-12-21 14:45:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:15,284 INFO L470 AbstractCegarLoop]: Abstraction has 7716 states and 11096 transitions. [2021-12-21 14:45:15,284 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:15,284 INFO L276 IsEmpty]: Start isEmpty. Operand 7716 states and 11096 transitions. [2021-12-21 14:45:15,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:45:15,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:15,285 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:15,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 14:45:15,286 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:15,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:15,287 INFO L85 PathProgramCache]: Analyzing trace with hash -108806593, now seen corresponding path program 1 times [2021-12-21 14:45:15,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:15,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928302649] [2021-12-21 14:45:15,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:15,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:15,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:15,332 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:15,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928302649] [2021-12-21 14:45:15,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928302649] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:15,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:15,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:15,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581931030] [2021-12-21 14:45:15,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:15,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:15,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:15,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:15,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:15,335 INFO L87 Difference]: Start difference. First operand 7716 states and 11096 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:15,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:15,441 INFO L93 Difference]: Finished difference Result 9416 states and 13754 transitions. [2021-12-21 14:45:15,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:15,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-21 14:45:15,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:15,457 INFO L225 Difference]: With dead ends: 9416 [2021-12-21 14:45:15,457 INFO L226 Difference]: Without dead ends: 8518 [2021-12-21 14:45:15,462 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 [2021-12-21 14:45:15,463 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 1516 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1516 SdHoareTripleChecker+Valid, 1787 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 [2021-12-21 14:45:15,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1516 Valid, 1787 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:15,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8518 states. [2021-12-21 14:45:15,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8518 to 8516. [2021-12-21 14:45:15,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8516 states, 8514 states have (on average 1.4479680526192154) internal successors, (12328), 8515 states have internal predecessors, (12328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:15,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8516 states to 8516 states and 12328 transitions. [2021-12-21 14:45:15,625 INFO L78 Accepts]: Start accepts. Automaton has 8516 states and 12328 transitions. Word has length 91 [2021-12-21 14:45:15,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:15,625 INFO L470 AbstractCegarLoop]: Abstraction has 8516 states and 12328 transitions. [2021-12-21 14:45:15,625 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:15,626 INFO L276 IsEmpty]: Start isEmpty. Operand 8516 states and 12328 transitions. [2021-12-21 14:45:15,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-21 14:45:15,626 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:15,627 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:15,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 14:45:15,627 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:15,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:15,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1109178805, now seen corresponding path program 1 times [2021-12-21 14:45:15,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:15,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414957974] [2021-12-21 14:45:15,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:15,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:15,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:15,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:15,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414957974] [2021-12-21 14:45:15,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414957974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:15,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:15,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 14:45:15,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957996277] [2021-12-21 14:45:15,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:15,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 14:45:15,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:15,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 14:45:15,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-21 14:45:15,718 INFO L87 Difference]: Start difference. First operand 8516 states and 12328 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:16,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:16,987 INFO L93 Difference]: Finished difference Result 32288 states and 49302 transitions. [2021-12-21 14:45:16,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-21 14:45:16,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-21 14:45:16,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:17,053 INFO L225 Difference]: With dead ends: 32288 [2021-12-21 14:45:17,054 INFO L226 Difference]: Without dead ends: 30590 [2021-12-21 14:45:17,065 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-12-21 14:45:17,066 INFO L933 BasicCegarLoop]: 1600 mSDtfsCounter, 12616 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12616 SdHoareTripleChecker+Valid, 4108 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:17,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12616 Valid, 4108 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 14:45:17,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30590 states. [2021-12-21 14:45:17,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30590 to 10212. [2021-12-21 14:45:17,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10212 states, 10210 states have (on average 1.4597453476983349) internal successors, (14904), 10211 states have internal predecessors, (14904), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10212 states to 10212 states and 14904 transitions. [2021-12-21 14:45:17,557 INFO L78 Accepts]: Start accepts. Automaton has 10212 states and 14904 transitions. Word has length 91 [2021-12-21 14:45:17,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:17,557 INFO L470 AbstractCegarLoop]: Abstraction has 10212 states and 14904 transitions. [2021-12-21 14:45:17,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 9 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:17,558 INFO L276 IsEmpty]: Start isEmpty. Operand 10212 states and 14904 transitions. [2021-12-21 14:45:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-21 14:45:17,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:17,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:17,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 14:45:17,561 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:17,561 INFO L85 PathProgramCache]: Analyzing trace with hash -646747483, now seen corresponding path program 1 times [2021-12-21 14:45:17,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:17,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377821037] [2021-12-21 14:45:17,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:17,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:17,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:17,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:17,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377821037] [2021-12-21 14:45:17,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377821037] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:17,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:17,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:17,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508104325] [2021-12-21 14:45:17,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:17,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:17,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:17,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:17,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:17,616 INFO L87 Difference]: Start difference. First operand 10212 states and 14904 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:18,099 INFO L93 Difference]: Finished difference Result 16648 states and 24730 transitions. [2021-12-21 14:45:18,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:18,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-21 14:45:18,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:18,125 INFO L225 Difference]: With dead ends: 16648 [2021-12-21 14:45:18,125 INFO L226 Difference]: Without dead ends: 13254 [2021-12-21 14:45:18,134 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 [2021-12-21 14:45:18,135 INFO L933 BasicCegarLoop]: 1602 mSDtfsCounter, 1507 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1507 SdHoareTripleChecker+Valid, 1706 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:18,136 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1507 Valid, 1706 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:18,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13254 states. [2021-12-21 14:45:18,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13254 to 13188. [2021-12-21 14:45:18,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13186 states have (on average 1.462763537084787) internal successors, (19288), 13187 states have internal predecessors, (19288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:18,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 19288 transitions. [2021-12-21 14:45:18,716 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 19288 transitions. Word has length 93 [2021-12-21 14:45:18,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:18,717 INFO L470 AbstractCegarLoop]: Abstraction has 13188 states and 19288 transitions. [2021-12-21 14:45:18,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:18,717 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 19288 transitions. [2021-12-21 14:45:18,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-21 14:45:18,719 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:18,719 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:18,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 14:45:18,719 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:18,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:18,720 INFO L85 PathProgramCache]: Analyzing trace with hash -580253971, now seen corresponding path program 1 times [2021-12-21 14:45:18,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:18,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215503584] [2021-12-21 14:45:18,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:18,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:18,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:18,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:18,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215503584] [2021-12-21 14:45:18,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215503584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:18,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:18,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 14:45:18,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214440565] [2021-12-21 14:45:18,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:18,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 14:45:18,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:18,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 14:45:18,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-21 14:45:18,992 INFO L87 Difference]: Start difference. First operand 13188 states and 19288 transitions. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:19,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:19,800 INFO L93 Difference]: Finished difference Result 19560 states and 28890 transitions. [2021-12-21 14:45:19,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 14:45:19,800 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-21 14:45:19,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:19,824 INFO L225 Difference]: With dead ends: 19560 [2021-12-21 14:45:19,824 INFO L226 Difference]: Without dead ends: 13190 [2021-12-21 14:45:19,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-12-21 14:45:19,838 INFO L933 BasicCegarLoop]: 1644 mSDtfsCounter, 4941 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4941 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:19,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4941 Valid, 2301 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 136 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 14:45:19,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13190 states. [2021-12-21 14:45:20,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13190 to 13188. [2021-12-21 14:45:20,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13188 states, 13186 states have (on average 1.4579099044441073) internal successors, (19224), 13187 states have internal predecessors, (19224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:20,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13188 states to 13188 states and 19224 transitions. [2021-12-21 14:45:20,443 INFO L78 Accepts]: Start accepts. Automaton has 13188 states and 19224 transitions. Word has length 93 [2021-12-21 14:45:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:20,443 INFO L470 AbstractCegarLoop]: Abstraction has 13188 states and 19224 transitions. [2021-12-21 14:45:20,443 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:20,444 INFO L276 IsEmpty]: Start isEmpty. Operand 13188 states and 19224 transitions. [2021-12-21 14:45:20,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-21 14:45:20,445 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:20,445 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:20,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 14:45:20,445 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:20,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:20,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1326262359, now seen corresponding path program 1 times [2021-12-21 14:45:20,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:20,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697387039] [2021-12-21 14:45:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:20,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:20,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:20,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:20,477 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:20,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697387039] [2021-12-21 14:45:20,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697387039] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:20,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:20,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:20,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124103991] [2021-12-21 14:45:20,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:20,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:20,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:20,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:20,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:20,480 INFO L87 Difference]: Start difference. First operand 13188 states and 19224 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:21,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:21,278 INFO L93 Difference]: Finished difference Result 25160 states and 37018 transitions. [2021-12-21 14:45:21,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:21,279 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 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 93 [2021-12-21 14:45:21,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:21,306 INFO L225 Difference]: With dead ends: 25160 [2021-12-21 14:45:21,307 INFO L226 Difference]: Without dead ends: 18790 [2021-12-21 14:45:21,322 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 [2021-12-21 14:45:21,323 INFO L933 BasicCegarLoop]: 1688 mSDtfsCounter, 1536 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1801 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 [2021-12-21 14:45:21,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1536 Valid, 1801 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:21,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18790 states. [2021-12-21 14:45:22,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18790 to 18788. [2021-12-21 14:45:22,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18788 states, 18786 states have (on average 1.455977855850101) internal successors, (27352), 18787 states have internal predecessors, (27352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:22,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18788 states to 18788 states and 27352 transitions. [2021-12-21 14:45:22,322 INFO L78 Accepts]: Start accepts. Automaton has 18788 states and 27352 transitions. Word has length 93 [2021-12-21 14:45:22,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:22,323 INFO L470 AbstractCegarLoop]: Abstraction has 18788 states and 27352 transitions. [2021-12-21 14:45:22,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:22,323 INFO L276 IsEmpty]: Start isEmpty. Operand 18788 states and 27352 transitions. [2021-12-21 14:45:22,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-21 14:45:22,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:22,324 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:22,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 14:45:22,325 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:22,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:22,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1222726774, now seen corresponding path program 1 times [2021-12-21 14:45:22,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:22,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524080351] [2021-12-21 14:45:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:22,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:22,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:22,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:22,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:22,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524080351] [2021-12-21 14:45:22,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524080351] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:22,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:22,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 14:45:22,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977777652] [2021-12-21 14:45:22,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:22,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 14:45:22,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:22,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 14:45:22,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 14:45:22,429 INFO L87 Difference]: Start difference. First operand 18788 states and 27352 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:24,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:24,308 INFO L93 Difference]: Finished difference Result 27658 states and 40264 transitions. [2021-12-21 14:45:24,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 14:45:24,309 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 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 94 [2021-12-21 14:45:24,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:24,355 INFO L225 Difference]: With dead ends: 27658 [2021-12-21 14:45:24,355 INFO L226 Difference]: Without dead ends: 27656 [2021-12-21 14:45:24,367 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 [2021-12-21 14:45:24,368 INFO L933 BasicCegarLoop]: 1659 mSDtfsCounter, 801 mSDsluCounter, 9281 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 10940 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:24,368 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 10940 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:24,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27656 states. [2021-12-21 14:45:25,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27656 to 19172. [2021-12-21 14:45:25,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19172 states, 19170 states have (on average 1.4435054773082943) internal successors, (27672), 19171 states have internal predecessors, (27672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19172 states to 19172 states and 27672 transitions. [2021-12-21 14:45:25,526 INFO L78 Accepts]: Start accepts. Automaton has 19172 states and 27672 transitions. Word has length 94 [2021-12-21 14:45:25,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:25,526 INFO L470 AbstractCegarLoop]: Abstraction has 19172 states and 27672 transitions. [2021-12-21 14:45:25,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 8 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:25,526 INFO L276 IsEmpty]: Start isEmpty. Operand 19172 states and 27672 transitions. [2021-12-21 14:45:25,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-21 14:45:25,527 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:25,527 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:25,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 14:45:25,528 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:25,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:25,528 INFO L85 PathProgramCache]: Analyzing trace with hash -362720764, now seen corresponding path program 1 times [2021-12-21 14:45:25,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:25,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660479012] [2021-12-21 14:45:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:25,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:25,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:25,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 14:45:25,559 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:25,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660479012] [2021-12-21 14:45:25,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660479012] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:25,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:25,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 14:45:25,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884443611] [2021-12-21 14:45:25,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:25,561 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 14:45:25,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:25,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 14:45:25,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 14:45:25,562 INFO L87 Difference]: Start difference. First operand 19172 states and 27672 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:27,098 INFO L93 Difference]: Finished difference Result 31723 states and 46110 transitions. [2021-12-21 14:45:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 14:45:27,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 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 95 [2021-12-21 14:45:27,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:27,130 INFO L225 Difference]: With dead ends: 31723 [2021-12-21 14:45:27,130 INFO L226 Difference]: Without dead ends: 24936 [2021-12-21 14:45:27,147 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 [2021-12-21 14:45:27,148 INFO L933 BasicCegarLoop]: 1696 mSDtfsCounter, 1537 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1537 SdHoareTripleChecker+Valid, 1805 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 [2021-12-21 14:45:27,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1537 Valid, 1805 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 14:45:27,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24936 states. [2021-12-21 14:45:28,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24936 to 24934. [2021-12-21 14:45:28,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24934 states, 24932 states have (on average 1.4411198459810686) internal successors, (35930), 24933 states have internal predecessors, (35930), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:28,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24934 states to 24934 states and 35930 transitions. [2021-12-21 14:45:28,841 INFO L78 Accepts]: Start accepts. Automaton has 24934 states and 35930 transitions. Word has length 95 [2021-12-21 14:45:28,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:28,841 INFO L470 AbstractCegarLoop]: Abstraction has 24934 states and 35930 transitions. [2021-12-21 14:45:28,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:28,842 INFO L276 IsEmpty]: Start isEmpty. Operand 24934 states and 35930 transitions. [2021-12-21 14:45:28,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-21 14:45:28,850 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:28,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:28,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 14:45:28,850 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:28,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:28,851 INFO L85 PathProgramCache]: Analyzing trace with hash 1202553482, now seen corresponding path program 1 times [2021-12-21 14:45:28,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:28,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515044911] [2021-12-21 14:45:28,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:28,851 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:28,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:28,946 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-12-21 14:45:28,947 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:28,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515044911] [2021-12-21 14:45:28,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515044911] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:28,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:28,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 14:45:28,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382608313] [2021-12-21 14:45:28,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:28,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 14:45:28,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:28,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 14:45:28,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 14:45:28,951 INFO L87 Difference]: Start difference. First operand 24934 states and 35930 transitions. Second operand has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:38,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 14:45:38,495 INFO L93 Difference]: Finished difference Result 155254 states and 224546 transitions. [2021-12-21 14:45:38,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 14:45:38,495 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 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 130 [2021-12-21 14:45:38,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 14:45:38,705 INFO L225 Difference]: With dead ends: 155254 [2021-12-21 14:45:38,705 INFO L226 Difference]: Without dead ends: 137140 [2021-12-21 14:45:38,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2021-12-21 14:45:38,753 INFO L933 BasicCegarLoop]: 1708 mSDtfsCounter, 10875 mSDsluCounter, 2449 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10875 SdHoareTripleChecker+Valid, 4157 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 14:45:38,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10875 Valid, 4157 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 14:45:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137140 states. [2021-12-21 14:45:43,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137140 to 43046. [2021-12-21 14:45:43,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43046 states, 43044 states have (on average 1.4398754762568535) internal successors, (61978), 43045 states have internal predecessors, (61978), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:43,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43046 states to 43046 states and 61978 transitions. [2021-12-21 14:45:43,193 INFO L78 Accepts]: Start accepts. Automaton has 43046 states and 61978 transitions. Word has length 130 [2021-12-21 14:45:43,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 14:45:43,194 INFO L470 AbstractCegarLoop]: Abstraction has 43046 states and 61978 transitions. [2021-12-21 14:45:43,194 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.0) internal successors, (117), 9 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 14:45:43,194 INFO L276 IsEmpty]: Start isEmpty. Operand 43046 states and 61978 transitions. [2021-12-21 14:45:43,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-21 14:45:43,205 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 14:45:43,205 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 14:45:43,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 14:45:43,206 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 14:45:43,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 14:45:43,206 INFO L85 PathProgramCache]: Analyzing trace with hash -566229334, now seen corresponding path program 1 times [2021-12-21 14:45:43,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 14:45:43,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717251700] [2021-12-21 14:45:43,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 14:45:43,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 14:45:43,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 14:45:43,295 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-12-21 14:45:43,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 14:45:43,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717251700] [2021-12-21 14:45:43,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717251700] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 14:45:43,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 14:45:43,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 14:45:43,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196246644] [2021-12-21 14:45:43,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 14:45:43,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 14:45:43,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 14:45:43,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 14:45:43,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-21 14:45:43,298 INFO L87 Difference]: Start difference. First operand 43046 states and 61978 transitions. Second operand has 9 states, 9 states have (on average 13.11111111111111) internal successors, (118), 9 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)