./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.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 6325d9fccdba44ffb7ef0e133bfabfb6d285a7f8e20c4133b9b681e02437a24c --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 20:39:47,907 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 20:39:47,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 20:39:47,951 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 20:39:47,951 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 20:39:47,952 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 20:39:47,954 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 20:39:47,956 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 20:39:47,957 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 20:39:47,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 20:39:47,960 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 20:39:47,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 20:39:47,962 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 20:39:47,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 20:39:47,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 20:39:47,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 20:39:47,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 20:39:47,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 20:39:47,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 20:39:47,973 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 20:39:47,974 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 20:39:47,975 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 20:39:47,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 20:39:47,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 20:39:47,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 20:39:47,982 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 20:39:47,982 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 20:39:47,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 20:39:47,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 20:39:47,983 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 20:39:47,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 20:39:47,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 20:39:47,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 20:39:47,986 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 20:39:47,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 20:39:47,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 20:39:47,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 20:39:47,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 20:39:47,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 20:39:47,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 20:39:47,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 20:39:47,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 20:39:47,991 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 20:39:48,012 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 20:39:48,013 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 20:39:48,013 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 20:39:48,013 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 20:39:48,014 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 20:39:48,014 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 20:39:48,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 20:39:48,015 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 20:39:48,015 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 20:39:48,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 20:39:48,016 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 20:39:48,016 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 20:39:48,016 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 20:39:48,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 20:39:48,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 20:39:48,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 20:39:48,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 20:39:48,017 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 20:39:48,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 20:39:48,017 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 20:39:48,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 20:39:48,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 20:39:48,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 20:39:48,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 20:39:48,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:39:48,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 20:39:48,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 20:39:48,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 20:39:48,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 20:39:48,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 20:39:48,019 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 20:39:48,019 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 20:39:48,020 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 20:39:48,020 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6325d9fccdba44ffb7ef0e133bfabfb6d285a7f8e20c4133b9b681e02437a24c [2022-07-13 20:39:48,185 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 20:39:48,197 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 20:39:48,198 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 20:39:48,199 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 20:39:48,199 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 20:39:48,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-07-13 20:39:48,240 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62299c94c/49c7841d3ae546959ca4d80262d085dd/FLAG9e4637c0b [2022-07-13 20:39:48,677 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 20:39:48,678 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-07-13 20:39:48,700 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62299c94c/49c7841d3ae546959ca4d80262d085dd/FLAG9e4637c0b [2022-07-13 20:39:48,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/62299c94c/49c7841d3ae546959ca4d80262d085dd [2022-07-13 20:39:48,965 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 20:39:48,965 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 20:39:48,966 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 20:39:48,966 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 20:39:48,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 20:39:48,969 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:39:48" (1/1) ... [2022-07-13 20:39:48,970 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d9f34d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:39:48, skipping insertion in model container [2022-07-13 20:39:48,970 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 08:39:48" (1/1) ... [2022-07-13 20:39:48,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 20:39:49,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 20:39:49,314 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[6487,6500] [2022-07-13 20:39:49,359 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[13777,13790] [2022-07-13 20:39:49,820 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:39:49,830 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 20:39:49,864 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[6487,6500] [2022-07-13 20:39:49,870 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.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c[13777,13790] [2022-07-13 20:39:50,172 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 20:39:50,191 INFO L208 MainTranslator]: Completed translation [2022-07-13 20:39:50,191 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:39:50 WrapperNode [2022-07-13 20:39:50,192 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 20:39:50,193 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 20:39:50,193 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 20:39:50,193 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 20:39:50,198 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:39:50" (1/1) ... [2022-07-13 20:39:50,240 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:39:50" (1/1) ... [2022-07-13 20:39:50,448 INFO L137 Inliner]: procedures = 35, calls = 20, calls flagged for inlining = 15, calls inlined = 15, statements flattened = 4977 [2022-07-13 20:39:50,448 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 20:39:50,449 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 20:39:50,449 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 20:39:50,449 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 20:39:50,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:39:50" (1/1) ... [2022-07-13 20:39:50,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:39:50" (1/1) ... [2022-07-13 20:39:50,490 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:39:50" (1/1) ... [2022-07-13 20:39:50,491 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:39:50" (1/1) ... [2022-07-13 20:39:50,606 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:39:50" (1/1) ... [2022-07-13 20:39:50,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:39:50" (1/1) ... [2022-07-13 20:39:50,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:39:50" (1/1) ... [2022-07-13 20:39:50,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 20:39:50,723 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 20:39:50,723 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 20:39:50,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 20:39:50,725 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:39:50" (1/1) ... [2022-07-13 20:39:50,730 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 20:39:50,754 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:39:50,792 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) [2022-07-13 20:39:50,837 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 [2022-07-13 20:39:50,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 20:39:50,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 20:39:50,876 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 20:39:50,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 20:39:50,970 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 20:39:50,972 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 20:39:53,549 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 20:39:53,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 20:39:53,564 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 20:39:53,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:39:53 BoogieIcfgContainer [2022-07-13 20:39:53,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 20:39:53,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 20:39:53,569 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 20:39:53,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 20:39:53,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 08:39:48" (1/3) ... [2022-07-13 20:39:53,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb62dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:39:53, skipping insertion in model container [2022-07-13 20:39:53,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 08:39:50" (2/3) ... [2022-07-13 20:39:53,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fb62dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 08:39:53, skipping insertion in model container [2022-07-13 20:39:53,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 08:39:53" (3/3) ... [2022-07-13 20:39:53,575 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals+Problem12_label02.c [2022-07-13 20:39:53,584 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 20:39:53,585 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-07-13 20:39:53,626 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 20:39:53,630 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@60f93d46, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3b75ae2e [2022-07-13 20:39:53,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-07-13 20:39:53,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 880 states, 877 states have (on average 1.903078677309008) internal successors, (1669), 879 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:53,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 20:39:53,643 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:39:53,644 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:39:53,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:39:53,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:39:53,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1601385972, now seen corresponding path program 1 times [2022-07-13 20:39:53,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:39:53,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622143451] [2022-07-13 20:39:53,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:39:53,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:39:53,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:39:53,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:39:53,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:39:53,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622143451] [2022-07-13 20:39:53,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622143451] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:39:53,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:39:53,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 20:39:53,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981925426] [2022-07-13 20:39:53,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:39:53,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-13 20:39:53,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:39:53,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-13 20:39:53,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:39:53,774 INFO L87 Difference]: Start difference. First operand has 880 states, 877 states have (on average 1.903078677309008) internal successors, (1669), 879 states have internal predecessors, (1669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:53,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:39:53,816 INFO L93 Difference]: Finished difference Result 1736 states and 3296 transitions. [2022-07-13 20:39:53,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-13 20:39:53,817 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-07-13 20:39:53,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:39:53,829 INFO L225 Difference]: With dead ends: 1736 [2022-07-13 20:39:53,830 INFO L226 Difference]: Without dead ends: 814 [2022-07-13 20:39:53,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-13 20:39:53,837 INFO L413 NwaCegarLoop]: 1600 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1600 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:39:53,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1600 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:39:53,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-13 20:39:53,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2022-07-13 20:39:53,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 812 states have (on average 1.8916256157635467) internal successors, (1536), 813 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:53,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1536 transitions. [2022-07-13 20:39:53,888 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1536 transitions. Word has length 26 [2022-07-13 20:39:53,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:39:53,888 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1536 transitions. [2022-07-13 20:39:53,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.0) internal successors, (26), 2 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:53,889 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1536 transitions. [2022-07-13 20:39:53,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-07-13 20:39:53,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:39:53,890 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:39:53,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 20:39:53,890 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:39:53,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:39:53,891 INFO L85 PathProgramCache]: Analyzing trace with hash 783737522, now seen corresponding path program 1 times [2022-07-13 20:39:53,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:39:53,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381021675] [2022-07-13 20:39:53,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:39:53,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:39:53,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:39:53,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:39:53,941 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:39:53,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381021675] [2022-07-13 20:39:53,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381021675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:39:53,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:39:53,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:39:53,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86924466] [2022-07-13 20:39:53,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:39:53,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:39:53,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:39:53,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:39:53,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:39:53,944 INFO L87 Difference]: Start difference. First operand 814 states and 1536 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:39:54,019 INFO L93 Difference]: Finished difference Result 856 states and 1599 transitions. [2022-07-13 20:39:54,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:39:54,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 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 26 [2022-07-13 20:39:54,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:39:54,023 INFO L225 Difference]: With dead ends: 856 [2022-07-13 20:39:54,024 INFO L226 Difference]: Without dead ends: 814 [2022-07-13 20:39:54,024 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:39:54,025 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 3 mSDsluCounter, 4583 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6117 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:39:54,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6117 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:39:54,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-13 20:39:54,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 814. [2022-07-13 20:39:54,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 814 states, 812 states have (on average 1.8719211822660098) internal successors, (1520), 813 states have internal predecessors, (1520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1520 transitions. [2022-07-13 20:39:54,041 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1520 transitions. Word has length 26 [2022-07-13 20:39:54,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:39:54,041 INFO L495 AbstractCegarLoop]: Abstraction has 814 states and 1520 transitions. [2022-07-13 20:39:54,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,041 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1520 transitions. [2022-07-13 20:39:54,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 20:39:54,042 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:39:54,043 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:39:54,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 20:39:54,043 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:39:54,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:39:54,044 INFO L85 PathProgramCache]: Analyzing trace with hash -698732182, now seen corresponding path program 1 times [2022-07-13 20:39:54,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:39:54,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242850234] [2022-07-13 20:39:54,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:39:54,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:39:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:39:54,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:39:54,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:39:54,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242850234] [2022-07-13 20:39:54,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242850234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:39:54,108 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:39:54,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:39:54,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760944392] [2022-07-13 20:39:54,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:39:54,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:39:54,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:39:54,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:39:54,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:39:54,110 INFO L87 Difference]: Start difference. First operand 814 states and 1520 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:39:54,138 INFO L93 Difference]: Finished difference Result 884 states and 1628 transitions. [2022-07-13 20:39:54,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:39:54,138 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-13 20:39:54,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:39:54,142 INFO L225 Difference]: With dead ends: 884 [2022-07-13 20:39:54,142 INFO L226 Difference]: Without dead ends: 846 [2022-07-13 20:39:54,142 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:39:54,143 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1484 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1484 SdHoareTripleChecker+Valid, 1610 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 [2022-07-13 20:39:54,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1484 Valid, 1610 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:39:54,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2022-07-13 20:39:54,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 844. [2022-07-13 20:39:54,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 844 states, 842 states have (on average 1.8610451306413303) internal successors, (1567), 843 states have internal predecessors, (1567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 844 states to 844 states and 1567 transitions. [2022-07-13 20:39:54,178 INFO L78 Accepts]: Start accepts. Automaton has 844 states and 1567 transitions. Word has length 41 [2022-07-13 20:39:54,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:39:54,178 INFO L495 AbstractCegarLoop]: Abstraction has 844 states and 1567 transitions. [2022-07-13 20:39:54,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,179 INFO L276 IsEmpty]: Start isEmpty. Operand 844 states and 1567 transitions. [2022-07-13 20:39:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 20:39:54,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:39:54,192 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:39:54,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 20:39:54,192 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:39:54,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:39:54,193 INFO L85 PathProgramCache]: Analyzing trace with hash -360939040, now seen corresponding path program 1 times [2022-07-13 20:39:54,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:39:54,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523912074] [2022-07-13 20:39:54,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:39:54,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:39:54,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:39:54,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:39:54,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:39:54,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523912074] [2022-07-13 20:39:54,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1523912074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:39:54,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:39:54,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:39:54,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921915744] [2022-07-13 20:39:54,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:39:54,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:39:54,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:39:54,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:39:54,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:39:54,278 INFO L87 Difference]: Start difference. First operand 844 states and 1567 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:39:54,306 INFO L93 Difference]: Finished difference Result 968 states and 1759 transitions. [2022-07-13 20:39:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:39:54,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-13 20:39:54,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:39:54,313 INFO L225 Difference]: With dead ends: 968 [2022-07-13 20:39:54,313 INFO L226 Difference]: Without dead ends: 900 [2022-07-13 20:39:54,316 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:39:54,324 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 1480 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 1609 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 [2022-07-13 20:39:54,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1480 Valid, 1609 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:39:54,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2022-07-13 20:39:54,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 898. [2022-07-13 20:39:54,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 896 states have (on average 1.8415178571428572) internal successors, (1650), 897 states have internal predecessors, (1650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1650 transitions. [2022-07-13 20:39:54,356 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1650 transitions. Word has length 41 [2022-07-13 20:39:54,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:39:54,357 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 1650 transitions. [2022-07-13 20:39:54,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,357 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1650 transitions. [2022-07-13 20:39:54,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-13 20:39:54,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:39:54,360 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:39:54,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 20:39:54,360 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:39:54,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:39:54,361 INFO L85 PathProgramCache]: Analyzing trace with hash 857046358, now seen corresponding path program 1 times [2022-07-13 20:39:54,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:39:54,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130214068] [2022-07-13 20:39:54,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:39:54,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:39:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:39:54,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:39:54,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:39:54,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130214068] [2022-07-13 20:39:54,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130214068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:39:54,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:39:54,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:39:54,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571341473] [2022-07-13 20:39:54,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:39:54,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:39:54,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:39:54,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:39:54,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:39:54,473 INFO L87 Difference]: Start difference. First operand 898 states and 1650 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:39:54,619 INFO L93 Difference]: Finished difference Result 1630 states and 2784 transitions. [2022-07-13 20:39:54,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 20:39:54,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 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 41 [2022-07-13 20:39:54,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:39:54,625 INFO L225 Difference]: With dead ends: 1630 [2022-07-13 20:39:54,625 INFO L226 Difference]: Without dead ends: 1508 [2022-07-13 20:39:54,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:39:54,630 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 4693 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4693 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:39:54,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4693 Valid, 1934 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:39:54,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2022-07-13 20:39:54,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1018. [2022-07-13 20:39:54,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1018 states, 1016 states have (on average 1.8011811023622046) internal successors, (1830), 1017 states have internal predecessors, (1830), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1018 states to 1018 states and 1830 transitions. [2022-07-13 20:39:54,657 INFO L78 Accepts]: Start accepts. Automaton has 1018 states and 1830 transitions. Word has length 41 [2022-07-13 20:39:54,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:39:54,660 INFO L495 AbstractCegarLoop]: Abstraction has 1018 states and 1830 transitions. [2022-07-13 20:39:54,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1018 states and 1830 transitions. [2022-07-13 20:39:54,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 20:39:54,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:39:54,664 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:39:54,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 20:39:54,665 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:39:54,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:39:54,670 INFO L85 PathProgramCache]: Analyzing trace with hash 1867096070, now seen corresponding path program 1 times [2022-07-13 20:39:54,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:39:54,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695008982] [2022-07-13 20:39:54,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:39:54,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:39:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:39:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:39:54,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:39:54,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695008982] [2022-07-13 20:39:54,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695008982] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:39:54,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:39:54,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:39:54,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339488303] [2022-07-13 20:39:54,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:39:54,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:39:54,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:39:54,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:39:54,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:39:54,741 INFO L87 Difference]: Start difference. First operand 1018 states and 1830 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:39:54,773 INFO L93 Difference]: Finished difference Result 1458 states and 2492 transitions. [2022-07-13 20:39:54,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:39:54,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-13 20:39:54,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:39:54,777 INFO L225 Difference]: With dead ends: 1458 [2022-07-13 20:39:54,778 INFO L226 Difference]: Without dead ends: 1216 [2022-07-13 20:39:54,778 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:39:54,779 INFO L413 NwaCegarLoop]: 1517 mSDtfsCounter, 1471 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1471 SdHoareTripleChecker+Valid, 1569 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 [2022-07-13 20:39:54,779 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1471 Valid, 1569 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:39:54,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2022-07-13 20:39:54,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1206. [2022-07-13 20:39:54,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1204 states have (on average 1.739202657807309) internal successors, (2094), 1205 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2094 transitions. [2022-07-13 20:39:54,804 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2094 transitions. Word has length 43 [2022-07-13 20:39:54,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:39:54,805 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2094 transitions. [2022-07-13 20:39:54,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,805 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2094 transitions. [2022-07-13 20:39:54,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-07-13 20:39:54,806 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:39:54,806 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:39:54,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 20:39:54,806 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:39:54,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:39:54,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1933589582, now seen corresponding path program 1 times [2022-07-13 20:39:54,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:39:54,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327415189] [2022-07-13 20:39:54,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:39:54,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:39:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:39:54,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:39:54,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:39:54,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327415189] [2022-07-13 20:39:54,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327415189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:39:54,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:39:54,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:39:54,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207640194] [2022-07-13 20:39:54,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:39:54,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:39:54,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:39:54,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:39:54,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:39:54,895 INFO L87 Difference]: Start difference. First operand 1206 states and 2094 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:39:54,957 INFO L93 Difference]: Finished difference Result 1638 states and 2728 transitions. [2022-07-13 20:39:54,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:39:54,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-07-13 20:39:54,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:39:54,962 INFO L225 Difference]: With dead ends: 1638 [2022-07-13 20:39:54,962 INFO L226 Difference]: Without dead ends: 1208 [2022-07-13 20:39:54,962 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:39:54,963 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 1531 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:39:54,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1680 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:39:54,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2022-07-13 20:39:54,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1206. [2022-07-13 20:39:54,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1204 states have (on average 1.7325581395348837) internal successors, (2086), 1205 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 2086 transitions. [2022-07-13 20:39:54,990 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 2086 transitions. Word has length 43 [2022-07-13 20:39:54,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:39:54,991 INFO L495 AbstractCegarLoop]: Abstraction has 1206 states and 2086 transitions. [2022-07-13 20:39:54,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:54,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 2086 transitions. [2022-07-13 20:39:54,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-07-13 20:39:54,992 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:39:54,992 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:39:54,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 20:39:54,992 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:39:54,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:39:54,993 INFO L85 PathProgramCache]: Analyzing trace with hash -602988295, now seen corresponding path program 1 times [2022-07-13 20:39:54,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:39:54,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92018507] [2022-07-13 20:39:54,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:39:54,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:39:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:39:55,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:39:55,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:39:55,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92018507] [2022-07-13 20:39:55,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92018507] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:39:55,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:39:55,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 20:39:55,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811095717] [2022-07-13 20:39:55,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:39:55,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 20:39:55,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:39:55,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 20:39:55,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 20:39:55,049 INFO L87 Difference]: Start difference. First operand 1206 states and 2086 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:55,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:39:55,170 INFO L93 Difference]: Finished difference Result 1540 states and 2558 transitions. [2022-07-13 20:39:55,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 20:39:55,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 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 44 [2022-07-13 20:39:55,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:39:55,175 INFO L225 Difference]: With dead ends: 1540 [2022-07-13 20:39:55,175 INFO L226 Difference]: Without dead ends: 1538 [2022-07-13 20:39:55,176 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:39:55,176 INFO L413 NwaCegarLoop]: 1552 mSDtfsCounter, 396 mSDsluCounter, 8921 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 10473 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 [2022-07-13 20:39:55,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 10473 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:39:55,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2022-07-13 20:39:55,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1230. [2022-07-13 20:39:55,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1230 states, 1228 states have (on average 1.714983713355049) internal successors, (2106), 1229 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:55,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1230 states to 1230 states and 2106 transitions. [2022-07-13 20:39:55,212 INFO L78 Accepts]: Start accepts. Automaton has 1230 states and 2106 transitions. Word has length 44 [2022-07-13 20:39:55,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:39:55,212 INFO L495 AbstractCegarLoop]: Abstraction has 1230 states and 2106 transitions. [2022-07-13 20:39:55,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:55,213 INFO L276 IsEmpty]: Start isEmpty. Operand 1230 states and 2106 transitions. [2022-07-13 20:39:55,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 20:39:55,213 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:39:55,213 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:39:55,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 20:39:55,214 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:39:55,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:39:55,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1900121563, now seen corresponding path program 1 times [2022-07-13 20:39:55,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:39:55,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635268948] [2022-07-13 20:39:55,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:39:55,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:39:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:39:55,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:39:55,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:39:55,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635268948] [2022-07-13 20:39:55,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635268948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:39:55,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:39:55,237 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:39:55,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612700119] [2022-07-13 20:39:55,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:39:55,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:39:55,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:39:55,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:39:55,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:39:55,238 INFO L87 Difference]: Start difference. First operand 1230 states and 2106 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:39:55,282 INFO L93 Difference]: Finished difference Result 1701 states and 2784 transitions. [2022-07-13 20:39:55,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:39:55,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 45 [2022-07-13 20:39:55,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:39:55,286 INFO L225 Difference]: With dead ends: 1701 [2022-07-13 20:39:55,286 INFO L226 Difference]: Without dead ends: 1434 [2022-07-13 20:39:55,287 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:39:55,288 INFO L413 NwaCegarLoop]: 1558 mSDtfsCounter, 1485 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1485 SdHoareTripleChecker+Valid, 1615 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 [2022-07-13 20:39:55,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1485 Valid, 1615 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:39:55,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1434 states. [2022-07-13 20:39:55,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1434 to 1432. [2022-07-13 20:39:55,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1432 states, 1430 states have (on average 1.6671328671328671) internal successors, (2384), 1431 states have internal predecessors, (2384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:55,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1432 states to 1432 states and 2384 transitions. [2022-07-13 20:39:55,333 INFO L78 Accepts]: Start accepts. Automaton has 1432 states and 2384 transitions. Word has length 45 [2022-07-13 20:39:55,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:39:55,333 INFO L495 AbstractCegarLoop]: Abstraction has 1432 states and 2384 transitions. [2022-07-13 20:39:55,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:39:55,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1432 states and 2384 transitions. [2022-07-13 20:39:55,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-13 20:39:55,334 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:39:55,334 INFO L195 NwaCegarLoop]: 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] [2022-07-13 20:39:55,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 20:39:55,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:39:55,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:39:55,335 INFO L85 PathProgramCache]: Analyzing trace with hash 1058541208, now seen corresponding path program 1 times [2022-07-13 20:39:55,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:39:55,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522285218] [2022-07-13 20:39:55,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:39:55,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:39:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:39:55,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:39:55,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:39:55,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522285218] [2022-07-13 20:39:55,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522285218] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:39:55,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:39:55,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:39:55,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604824922] [2022-07-13 20:39:55,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:39:55,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 20:39:55,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:39:55,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 20:39:55,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 20:39:55,381 INFO L87 Difference]: Start difference. First operand 1432 states and 2384 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:00,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:00,075 INFO L93 Difference]: Finished difference Result 3687 states and 6693 transitions. [2022-07-13 20:40:00,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 20:40:00,076 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2022-07-13 20:40:00,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:00,083 INFO L225 Difference]: With dead ends: 3687 [2022-07-13 20:40:00,083 INFO L226 Difference]: Without dead ends: 2934 [2022-07-13 20:40:00,084 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:40:00,085 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 2337 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 5518 mSolverCounterSat, 1100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 6618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1100 IncrementalHoareTripleChecker+Valid, 5518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:00,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 792 Invalid, 6618 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1100 Valid, 5518 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-13 20:40:00,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2934 states. [2022-07-13 20:40:00,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2934 to 2934. [2022-07-13 20:40:00,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2934 states, 2932 states have (on average 1.5381991814461118) internal successors, (4510), 2933 states have internal predecessors, (4510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:00,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 4510 transitions. [2022-07-13 20:40:00,151 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 4510 transitions. Word has length 63 [2022-07-13 20:40:00,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:00,151 INFO L495 AbstractCegarLoop]: Abstraction has 2934 states and 4510 transitions. [2022-07-13 20:40:00,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:00,152 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 4510 transitions. [2022-07-13 20:40:00,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 20:40:00,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:00,153 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:40:00,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 20:40:00,153 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:00,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:00,153 INFO L85 PathProgramCache]: Analyzing trace with hash -393288849, now seen corresponding path program 1 times [2022-07-13 20:40:00,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:00,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902755830] [2022-07-13 20:40:00,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:00,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:00,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:00,192 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-13 20:40:00,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:00,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902755830] [2022-07-13 20:40:00,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902755830] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:00,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:00,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:40:00,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787810383] [2022-07-13 20:40:00,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:00,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:40:00,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:00,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:40:00,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:40:00,195 INFO L87 Difference]: Start difference. First operand 2934 states and 4510 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:00,362 INFO L93 Difference]: Finished difference Result 5038 states and 7462 transitions. [2022-07-13 20:40:00,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:40:00,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 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 64 [2022-07-13 20:40:00,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:00,374 INFO L225 Difference]: With dead ends: 5038 [2022-07-13 20:40:00,374 INFO L226 Difference]: Without dead ends: 4384 [2022-07-13 20:40:00,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:40:00,376 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3088 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3088 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:00,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3088 Valid, 3191 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:00,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4384 states. [2022-07-13 20:40:00,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4384 to 3586. [2022-07-13 20:40:00,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3586 states, 3584 states have (on average 1.51171875) internal successors, (5418), 3585 states have internal predecessors, (5418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:00,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3586 states to 3586 states and 5418 transitions. [2022-07-13 20:40:00,513 INFO L78 Accepts]: Start accepts. Automaton has 3586 states and 5418 transitions. Word has length 64 [2022-07-13 20:40:00,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:00,513 INFO L495 AbstractCegarLoop]: Abstraction has 3586 states and 5418 transitions. [2022-07-13 20:40:00,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 5 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:00,514 INFO L276 IsEmpty]: Start isEmpty. Operand 3586 states and 5418 transitions. [2022-07-13 20:40:00,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-13 20:40:00,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:00,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:40:00,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 20:40:00,516 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:00,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:00,516 INFO L85 PathProgramCache]: Analyzing trace with hash 2132895631, now seen corresponding path program 1 times [2022-07-13 20:40:00,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:00,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306528932] [2022-07-13 20:40:00,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:00,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:00,566 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 20:40:00,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:00,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306528932] [2022-07-13 20:40:00,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306528932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:00,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:00,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:40:00,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442364682] [2022-07-13 20:40:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:00,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:40:00,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:00,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:40:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:40:00,569 INFO L87 Difference]: Start difference. First operand 3586 states and 5418 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:00,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:00,764 INFO L93 Difference]: Finished difference Result 5690 states and 8370 transitions. [2022-07-13 20:40:00,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:40:00,764 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 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 64 [2022-07-13 20:40:00,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:00,777 INFO L225 Difference]: With dead ends: 5690 [2022-07-13 20:40:00,778 INFO L226 Difference]: Without dead ends: 5036 [2022-07-13 20:40:00,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:40:00,780 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3082 mSDsluCounter, 1638 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3082 SdHoareTripleChecker+Valid, 3206 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:00,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3082 Valid, 3206 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:00,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2022-07-13 20:40:00,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4566. [2022-07-13 20:40:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4566 states, 4564 states have (on average 1.483347940403155) internal successors, (6770), 4565 states have internal predecessors, (6770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:00,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4566 states to 4566 states and 6770 transitions. [2022-07-13 20:40:00,951 INFO L78 Accepts]: Start accepts. Automaton has 4566 states and 6770 transitions. Word has length 64 [2022-07-13 20:40:00,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:00,952 INFO L495 AbstractCegarLoop]: Abstraction has 4566 states and 6770 transitions. [2022-07-13 20:40:00,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:00,952 INFO L276 IsEmpty]: Start isEmpty. Operand 4566 states and 6770 transitions. [2022-07-13 20:40:00,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:40:00,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:00,953 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:40:00,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 20:40:00,954 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:00,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:00,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1342668761, now seen corresponding path program 1 times [2022-07-13 20:40:00,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:00,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436350677] [2022-07-13 20:40:00,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:00,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:00,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:00,987 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:00,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:00,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436350677] [2022-07-13 20:40:00,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436350677] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:00,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:00,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:40:00,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672706465] [2022-07-13 20:40:00,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:00,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:40:00,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:00,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:40:00,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:40:00,989 INFO L87 Difference]: Start difference. First operand 4566 states and 6770 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:01,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:01,121 INFO L93 Difference]: Finished difference Result 6216 states and 9094 transitions. [2022-07-13 20:40:01,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:40:01,121 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-13 20:40:01,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:01,139 INFO L225 Difference]: With dead ends: 6216 [2022-07-13 20:40:01,139 INFO L226 Difference]: Without dead ends: 3930 [2022-07-13 20:40:01,142 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:40:01,143 INFO L413 NwaCegarLoop]: 1544 mSDtfsCounter, 36 mSDsluCounter, 1504 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:01,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3048 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:01,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3930 states. [2022-07-13 20:40:01,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3930 to 3928. [2022-07-13 20:40:01,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 3926 states have (on average 1.4984717269485481) internal successors, (5883), 3927 states have internal predecessors, (5883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:01,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 5883 transitions. [2022-07-13 20:40:01,267 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 5883 transitions. Word has length 66 [2022-07-13 20:40:01,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:01,267 INFO L495 AbstractCegarLoop]: Abstraction has 3928 states and 5883 transitions. [2022-07-13 20:40:01,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:01,268 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 5883 transitions. [2022-07-13 20:40:01,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-13 20:40:01,272 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:01,273 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:40:01,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 20:40:01,273 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:01,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:01,273 INFO L85 PathProgramCache]: Analyzing trace with hash -366937100, now seen corresponding path program 1 times [2022-07-13 20:40:01,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:01,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570722903] [2022-07-13 20:40:01,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:01,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:01,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:01,312 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:40:01,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:01,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570722903] [2022-07-13 20:40:01,313 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1570722903] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:01,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:01,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:40:01,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810407857] [2022-07-13 20:40:01,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:01,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:40:01,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:01,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:40:01,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:40:01,315 INFO L87 Difference]: Start difference. First operand 3928 states and 5883 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:01,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:01,479 INFO L93 Difference]: Finished difference Result 5328 states and 7855 transitions. [2022-07-13 20:40:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:40:01,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-07-13 20:40:01,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:01,487 INFO L225 Difference]: With dead ends: 5328 [2022-07-13 20:40:01,487 INFO L226 Difference]: Without dead ends: 4862 [2022-07-13 20:40:01,489 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-13 20:40:01,489 INFO L413 NwaCegarLoop]: 1568 mSDtfsCounter, 3074 mSDsluCounter, 1647 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3074 SdHoareTripleChecker+Valid, 3215 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:01,489 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3074 Valid, 3215 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:01,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4862 states. [2022-07-13 20:40:01,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4862 to 4392. [2022-07-13 20:40:01,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4392 states, 4390 states have (on average 1.4876993166287016) internal successors, (6531), 4391 states have internal predecessors, (6531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:01,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4392 states to 4392 states and 6531 transitions. [2022-07-13 20:40:01,630 INFO L78 Accepts]: Start accepts. Automaton has 4392 states and 6531 transitions. Word has length 66 [2022-07-13 20:40:01,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:01,630 INFO L495 AbstractCegarLoop]: Abstraction has 4392 states and 6531 transitions. [2022-07-13 20:40:01,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:01,630 INFO L276 IsEmpty]: Start isEmpty. Operand 4392 states and 6531 transitions. [2022-07-13 20:40:01,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 20:40:01,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:01,631 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:40:01,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 20:40:01,632 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:01,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:01,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1328887140, now seen corresponding path program 1 times [2022-07-13 20:40:01,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:01,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294927772] [2022-07-13 20:40:01,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:01,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:01,814 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:01,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:01,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294927772] [2022-07-13 20:40:01,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294927772] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:40:01,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088058046] [2022-07-13 20:40:01,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:01,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:40:01,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:40:01,816 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:40:01,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 20:40:01,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:01,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-13 20:40:01,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:40:02,148 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:40:02,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:40:02,276 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-13 20:40:02,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088058046] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:40:02,276 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:40:02,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 4, 4] total 18 [2022-07-13 20:40:02,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359479150] [2022-07-13 20:40:02,278 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:40:02,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 20:40:02,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:02,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 20:40:02,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2022-07-13 20:40:02,279 INFO L87 Difference]: Start difference. First operand 4392 states and 6531 transitions. Second operand has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:06,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:06,555 INFO L93 Difference]: Finished difference Result 24772 states and 34376 transitions. [2022-07-13 20:40:06,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2022-07-13 20:40:06,556 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-07-13 20:40:06,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:06,586 INFO L225 Difference]: With dead ends: 24772 [2022-07-13 20:40:06,586 INFO L226 Difference]: Without dead ends: 22682 [2022-07-13 20:40:06,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4630 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2148, Invalid=10062, Unknown=0, NotChecked=0, Total=12210 [2022-07-13 20:40:06,596 INFO L413 NwaCegarLoop]: 1555 mSDtfsCounter, 13668 mSDsluCounter, 5137 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13668 SdHoareTripleChecker+Valid, 6692 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:06,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13668 Valid, 6692 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 20:40:06,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22682 states. [2022-07-13 20:40:07,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22682 to 13305. [2022-07-13 20:40:07,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13305 states, 13303 states have (on average 1.376230925355183) internal successors, (18308), 13304 states have internal predecessors, (18308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:07,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13305 states to 13305 states and 18308 transitions. [2022-07-13 20:40:07,432 INFO L78 Accepts]: Start accepts. Automaton has 13305 states and 18308 transitions. Word has length 67 [2022-07-13 20:40:07,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:07,432 INFO L495 AbstractCegarLoop]: Abstraction has 13305 states and 18308 transitions. [2022-07-13 20:40:07,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.222222222222221) internal successors, (184), 18 states have internal predecessors, (184), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:07,432 INFO L276 IsEmpty]: Start isEmpty. Operand 13305 states and 18308 transitions. [2022-07-13 20:40:07,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:40:07,433 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:07,434 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:40:07,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 20:40:07,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-13 20:40:07,648 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:07,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:07,648 INFO L85 PathProgramCache]: Analyzing trace with hash 620602156, now seen corresponding path program 1 times [2022-07-13 20:40:07,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:07,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330915000] [2022-07-13 20:40:07,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:07,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:07,752 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:07,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:07,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330915000] [2022-07-13 20:40:07,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330915000] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:40:07,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172399742] [2022-07-13 20:40:07,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:07,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:40:07,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:40:07,754 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:40:07,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 20:40:07,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:07,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-13 20:40:07,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:40:08,211 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:08,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:40:08,544 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:08,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172399742] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:40:08,545 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:40:08,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2022-07-13 20:40:08,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947249646] [2022-07-13 20:40:08,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:40:08,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-13 20:40:08,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:08,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-13 20:40:08,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-07-13 20:40:08,546 INFO L87 Difference]: Start difference. First operand 13305 states and 18308 transitions. Second operand has 25 states, 25 states have (on average 6.88) internal successors, (172), 24 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:23,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:23,501 INFO L93 Difference]: Finished difference Result 132700 states and 174249 transitions. [2022-07-13 20:40:23,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-07-13 20:40:23,501 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 6.88) internal successors, (172), 24 states have internal predecessors, (172), 0 states have call successors, (0), 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 68 [2022-07-13 20:40:23,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:23,727 INFO L225 Difference]: With dead ends: 132700 [2022-07-13 20:40:23,727 INFO L226 Difference]: Without dead ends: 122515 [2022-07-13 20:40:23,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 119 SyntacticMatches, 1 SemanticMatches, 155 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8692 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3558, Invalid=20934, Unknown=0, NotChecked=0, Total=24492 [2022-07-13 20:40:23,768 INFO L413 NwaCegarLoop]: 1622 mSDtfsCounter, 25921 mSDsluCounter, 9087 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25921 SdHoareTripleChecker+Valid, 10709 SdHoareTripleChecker+Invalid, 2662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:23,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25921 Valid, 10709 Invalid, 2662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 20:40:23,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122515 states. [2022-07-13 20:40:29,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122515 to 54762. [2022-07-13 20:40:29,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54762 states, 54760 states have (on average 1.3223338203067934) internal successors, (72411), 54761 states have internal predecessors, (72411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:29,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54762 states to 54762 states and 72411 transitions. [2022-07-13 20:40:29,694 INFO L78 Accepts]: Start accepts. Automaton has 54762 states and 72411 transitions. Word has length 68 [2022-07-13 20:40:29,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:29,694 INFO L495 AbstractCegarLoop]: Abstraction has 54762 states and 72411 transitions. [2022-07-13 20:40:29,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 6.88) internal successors, (172), 24 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:29,694 INFO L276 IsEmpty]: Start isEmpty. Operand 54762 states and 72411 transitions. [2022-07-13 20:40:29,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:40:29,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:29,701 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:40:29,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 20:40:29,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-13 20:40:29,917 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:29,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:29,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1702537876, now seen corresponding path program 1 times [2022-07-13 20:40:29,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:29,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864465521] [2022-07-13 20:40:29,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:29,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:29,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:29,952 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:29,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:29,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864465521] [2022-07-13 20:40:29,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864465521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:29,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:29,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:40:29,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547539836] [2022-07-13 20:40:29,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:29,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:40:29,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:29,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:40:29,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:40:29,955 INFO L87 Difference]: Start difference. First operand 54762 states and 72411 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:33,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:33,099 INFO L93 Difference]: Finished difference Result 79200 states and 103954 transitions. [2022-07-13 20:40:33,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:40:33,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-07-13 20:40:33,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:33,140 INFO L225 Difference]: With dead ends: 79200 [2022-07-13 20:40:33,140 INFO L226 Difference]: Without dead ends: 32120 [2022-07-13 20:40:33,169 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:40:33,169 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 26 mSDsluCounter, 1496 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 3030 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:33,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 3030 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:33,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32120 states. [2022-07-13 20:40:35,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32120 to 31692. [2022-07-13 20:40:35,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31692 states, 31690 states have (on average 1.2937519722309876) internal successors, (40999), 31691 states have internal predecessors, (40999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:35,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31692 states to 31692 states and 40999 transitions. [2022-07-13 20:40:35,951 INFO L78 Accepts]: Start accepts. Automaton has 31692 states and 40999 transitions. Word has length 68 [2022-07-13 20:40:35,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:35,951 INFO L495 AbstractCegarLoop]: Abstraction has 31692 states and 40999 transitions. [2022-07-13 20:40:35,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:35,952 INFO L276 IsEmpty]: Start isEmpty. Operand 31692 states and 40999 transitions. [2022-07-13 20:40:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:40:35,953 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:35,953 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:40:35,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 20:40:35,954 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:35,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:35,954 INFO L85 PathProgramCache]: Analyzing trace with hash 455030260, now seen corresponding path program 1 times [2022-07-13 20:40:35,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:35,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388943070] [2022-07-13 20:40:35,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:35,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:35,981 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:35,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:35,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388943070] [2022-07-13 20:40:35,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388943070] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:35,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:35,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 20:40:35,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018820023] [2022-07-13 20:40:35,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:35,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 20:40:35,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:35,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 20:40:35,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 20:40:35,983 INFO L87 Difference]: Start difference. First operand 31692 states and 40999 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:37,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:37,900 INFO L93 Difference]: Finished difference Result 47678 states and 61213 transitions. [2022-07-13 20:40:37,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 20:40:37,901 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-07-13 20:40:37,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:37,925 INFO L225 Difference]: With dead ends: 47678 [2022-07-13 20:40:37,925 INFO L226 Difference]: Without dead ends: 21614 [2022-07-13 20:40:37,937 INFO L412 NwaCegarLoop]: 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 [2022-07-13 20:40:37,938 INFO L413 NwaCegarLoop]: 1529 mSDtfsCounter, 20 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:37,938 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 3021 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:37,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21614 states. [2022-07-13 20:40:39,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21614 to 21612. [2022-07-13 20:40:39,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21612 states, 21610 states have (on average 1.2752429430819066) internal successors, (27558), 21611 states have internal predecessors, (27558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21612 states to 21612 states and 27558 transitions. [2022-07-13 20:40:39,679 INFO L78 Accepts]: Start accepts. Automaton has 21612 states and 27558 transitions. Word has length 68 [2022-07-13 20:40:39,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:39,679 INFO L495 AbstractCegarLoop]: Abstraction has 21612 states and 27558 transitions. [2022-07-13 20:40:39,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:39,680 INFO L276 IsEmpty]: Start isEmpty. Operand 21612 states and 27558 transitions. [2022-07-13 20:40:39,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:40:39,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:39,681 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:40:39,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 20:40:39,681 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:39,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:39,682 INFO L85 PathProgramCache]: Analyzing trace with hash 530169440, now seen corresponding path program 1 times [2022-07-13 20:40:39,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:39,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590601591] [2022-07-13 20:40:39,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:39,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:39,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:39,711 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 20:40:39,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:39,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590601591] [2022-07-13 20:40:39,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590601591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:39,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:39,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:40:39,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623863369] [2022-07-13 20:40:39,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:39,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:40:39,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:39,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:40:39,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:40:39,714 INFO L87 Difference]: Start difference. First operand 21612 states and 27558 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:40,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:40,619 INFO L93 Difference]: Finished difference Result 31423 states and 39922 transitions. [2022-07-13 20:40:40,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:40:40,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 20:40:40,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:40,632 INFO L225 Difference]: With dead ends: 31423 [2022-07-13 20:40:40,632 INFO L226 Difference]: Without dead ends: 12176 [2022-07-13 20:40:40,644 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:40:40,645 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4553 mSDsluCounter, 1464 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4553 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:40,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4553 Valid, 2957 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:40,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12176 states. [2022-07-13 20:40:41,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12176 to 12176. [2022-07-13 20:40:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12176 states, 12174 states have (on average 1.2962871693773617) internal successors, (15781), 12175 states have internal predecessors, (15781), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12176 states to 12176 states and 15781 transitions. [2022-07-13 20:40:41,615 INFO L78 Accepts]: Start accepts. Automaton has 12176 states and 15781 transitions. Word has length 68 [2022-07-13 20:40:41,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:41,615 INFO L495 AbstractCegarLoop]: Abstraction has 12176 states and 15781 transitions. [2022-07-13 20:40:41,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:41,616 INFO L276 IsEmpty]: Start isEmpty. Operand 12176 states and 15781 transitions. [2022-07-13 20:40:41,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:40:41,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:41,617 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:40:41,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 20:40:41,617 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:41,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:41,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1360814688, now seen corresponding path program 1 times [2022-07-13 20:40:41,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:41,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499610019] [2022-07-13 20:40:41,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:41,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:41,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:41,651 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 20:40:41,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:41,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499610019] [2022-07-13 20:40:41,652 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499610019] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:41,652 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:41,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:40:41,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613484799] [2022-07-13 20:40:41,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:41,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:40:41,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:41,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:40:41,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:40:41,654 INFO L87 Difference]: Start difference. First operand 12176 states and 15781 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:42,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:42,401 INFO L93 Difference]: Finished difference Result 19465 states and 24792 transitions. [2022-07-13 20:40:42,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:40:42,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 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 68 [2022-07-13 20:40:42,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:42,411 INFO L225 Difference]: With dead ends: 19465 [2022-07-13 20:40:42,411 INFO L226 Difference]: Without dead ends: 9664 [2022-07-13 20:40:42,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:40:42,418 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4558 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4558 SdHoareTripleChecker+Valid, 2955 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:42,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4558 Valid, 2955 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:42,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9664 states. [2022-07-13 20:40:43,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9664 to 9664. [2022-07-13 20:40:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9664 states, 9662 states have (on average 1.2974539432829642) internal successors, (12536), 9663 states have internal predecessors, (12536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:43,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9664 states to 9664 states and 12536 transitions. [2022-07-13 20:40:43,139 INFO L78 Accepts]: Start accepts. Automaton has 9664 states and 12536 transitions. Word has length 68 [2022-07-13 20:40:43,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:43,139 INFO L495 AbstractCegarLoop]: Abstraction has 9664 states and 12536 transitions. [2022-07-13 20:40:43,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:43,139 INFO L276 IsEmpty]: Start isEmpty. Operand 9664 states and 12536 transitions. [2022-07-13 20:40:43,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 20:40:43,140 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:43,140 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:40:43,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 20:40:43,140 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:43,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:43,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1355942016, now seen corresponding path program 1 times [2022-07-13 20:40:43,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:43,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86052650] [2022-07-13 20:40:43,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:43,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:43,175 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 20:40:43,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:43,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86052650] [2022-07-13 20:40:43,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86052650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:40:43,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:40:43,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:40:43,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011577117] [2022-07-13 20:40:43,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:40:43,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 20:40:43,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:43,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 20:40:43,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:40:43,178 INFO L87 Difference]: Start difference. First operand 9664 states and 12536 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:44,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:44,517 INFO L93 Difference]: Finished difference Result 20973 states and 26437 transitions. [2022-07-13 20:40:44,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 20:40:44,519 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2022-07-13 20:40:44,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:44,534 INFO L225 Difference]: With dead ends: 20973 [2022-07-13 20:40:44,535 INFO L226 Difference]: Without dead ends: 13623 [2022-07-13 20:40:44,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 20:40:44,542 INFO L413 NwaCegarLoop]: 1493 mSDtfsCounter, 4647 mSDsluCounter, 1541 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4647 SdHoareTripleChecker+Valid, 3034 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:44,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4647 Valid, 3034 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:40:44,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13623 states. [2022-07-13 20:40:45,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13623 to 12757. [2022-07-13 20:40:45,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12757 states, 12755 states have (on average 1.2736965895727166) internal successors, (16246), 12756 states have internal predecessors, (16246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:45,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12757 states to 12757 states and 16246 transitions. [2022-07-13 20:40:45,687 INFO L78 Accepts]: Start accepts. Automaton has 12757 states and 16246 transitions. Word has length 68 [2022-07-13 20:40:45,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:45,687 INFO L495 AbstractCegarLoop]: Abstraction has 12757 states and 16246 transitions. [2022-07-13 20:40:45,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 5 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:45,688 INFO L276 IsEmpty]: Start isEmpty. Operand 12757 states and 16246 transitions. [2022-07-13 20:40:45,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 20:40:45,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:45,688 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:40:45,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 20:40:45,689 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:45,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:45,689 INFO L85 PathProgramCache]: Analyzing trace with hash -576881103, now seen corresponding path program 1 times [2022-07-13 20:40:45,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:45,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023364807] [2022-07-13 20:40:45,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:45,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:45,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:45,911 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:45,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:45,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023364807] [2022-07-13 20:40:45,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023364807] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:40:45,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233525002] [2022-07-13 20:40:45,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:45,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:40:45,911 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:40:45,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:40:45,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 20:40:46,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:46,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-13 20:40:46,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:40:47,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:47,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:40:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:47,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233525002] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:40:47,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:40:47,643 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11] total 31 [2022-07-13 20:40:47,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126334530] [2022-07-13 20:40:47,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:40:47,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-13 20:40:47,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:40:47,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-13 20:40:47,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=841, Unknown=0, NotChecked=0, Total=930 [2022-07-13 20:40:47,644 INFO L87 Difference]: Start difference. First operand 12757 states and 16246 transitions. Second operand has 31 states, 31 states have (on average 6.096774193548387) internal successors, (189), 31 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:57,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:40:57,115 INFO L93 Difference]: Finished difference Result 26894 states and 33254 transitions. [2022-07-13 20:40:57,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2022-07-13 20:40:57,115 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 6.096774193548387) internal successors, (189), 31 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2022-07-13 20:40:57,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:40:57,139 INFO L225 Difference]: With dead ends: 26894 [2022-07-13 20:40:57,139 INFO L226 Difference]: Without dead ends: 20375 [2022-07-13 20:40:57,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3273 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=1888, Invalid=9884, Unknown=0, NotChecked=0, Total=11772 [2022-07-13 20:40:57,149 INFO L413 NwaCegarLoop]: 1737 mSDtfsCounter, 11850 mSDsluCounter, 20954 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11850 SdHoareTripleChecker+Valid, 22691 SdHoareTripleChecker+Invalid, 1190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 20:40:57,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11850 Valid, 22691 Invalid, 1190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 20:40:57,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20375 states. [2022-07-13 20:40:58,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20375 to 10353. [2022-07-13 20:40:58,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10353 states, 10351 states have (on average 1.2878948893826683) internal successors, (13331), 10352 states have internal predecessors, (13331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:58,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10353 states to 10353 states and 13331 transitions. [2022-07-13 20:40:58,386 INFO L78 Accepts]: Start accepts. Automaton has 10353 states and 13331 transitions. Word has length 69 [2022-07-13 20:40:58,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:40:58,386 INFO L495 AbstractCegarLoop]: Abstraction has 10353 states and 13331 transitions. [2022-07-13 20:40:58,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 6.096774193548387) internal successors, (189), 31 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:40:58,387 INFO L276 IsEmpty]: Start isEmpty. Operand 10353 states and 13331 transitions. [2022-07-13 20:40:58,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-13 20:40:58,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:40:58,387 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 20:40:58,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 20:40:58,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:40:58,588 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:40:58,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:40:58,588 INFO L85 PathProgramCache]: Analyzing trace with hash 220837411, now seen corresponding path program 1 times [2022-07-13 20:40:58,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:40:58,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091157661] [2022-07-13 20:40:58,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:58,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:40:58,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:58,853 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:40:58,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:40:58,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091157661] [2022-07-13 20:40:58,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091157661] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:40:58,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377835194] [2022-07-13 20:40:58,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:40:58,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:40:58,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:40:58,854 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:40:58,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 20:40:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:40:58,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-13 20:40:58,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:41:00,849 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:41:00,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:41:05,265 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:41:05,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377835194] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:41:05,266 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:41:05,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 24, 19] total 52 [2022-07-13 20:41:05,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197288144] [2022-07-13 20:41:05,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:41:05,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-07-13 20:41:05,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:41:05,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-07-13 20:41:05,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=297, Invalid=2355, Unknown=0, NotChecked=0, Total=2652 [2022-07-13 20:41:05,268 INFO L87 Difference]: Start difference. First operand 10353 states and 13331 transitions. Second operand has 52 states, 52 states have (on average 3.6153846153846154) internal successors, (188), 52 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:12,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:41:12,140 INFO L93 Difference]: Finished difference Result 17626 states and 21937 transitions. [2022-07-13 20:41:12,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-13 20:41:12,140 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 3.6153846153846154) internal successors, (188), 52 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 70 [2022-07-13 20:41:12,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:41:12,153 INFO L225 Difference]: With dead ends: 17626 [2022-07-13 20:41:12,153 INFO L226 Difference]: Without dead ends: 12017 [2022-07-13 20:41:12,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2255 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1655, Invalid=9057, Unknown=0, NotChecked=0, Total=10712 [2022-07-13 20:41:12,160 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 28163 mSDsluCounter, 35602 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28163 SdHoareTripleChecker+Valid, 37199 SdHoareTripleChecker+Invalid, 1746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:41:12,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28163 Valid, 37199 Invalid, 1746 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [212 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:41:12,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12017 states. [2022-07-13 20:41:12,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12017 to 6934. [2022-07-13 20:41:13,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6934 states, 6932 states have (on average 1.3358338141950374) internal successors, (9260), 6933 states have internal predecessors, (9260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:13,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6934 states to 6934 states and 9260 transitions. [2022-07-13 20:41:13,009 INFO L78 Accepts]: Start accepts. Automaton has 6934 states and 9260 transitions. Word has length 70 [2022-07-13 20:41:13,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:41:13,009 INFO L495 AbstractCegarLoop]: Abstraction has 6934 states and 9260 transitions. [2022-07-13 20:41:13,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 3.6153846153846154) internal successors, (188), 52 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:13,009 INFO L276 IsEmpty]: Start isEmpty. Operand 6934 states and 9260 transitions. [2022-07-13 20:41:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-13 20:41:13,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:41:13,011 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:41:13,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 20:41:13,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:41:13,223 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:41:13,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:41:13,224 INFO L85 PathProgramCache]: Analyzing trace with hash -159242140, now seen corresponding path program 1 times [2022-07-13 20:41:13,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:41:13,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43339632] [2022-07-13 20:41:13,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:41:13,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:41:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:41:13,473 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 39 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:41:13,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:41:13,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43339632] [2022-07-13 20:41:13,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43339632] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:41:13,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265877822] [2022-07-13 20:41:13,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:41:13,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:41:13,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:41:13,475 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:41:13,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 20:41:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:41:13,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-13 20:41:13,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:41:14,663 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 33 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:41:14,663 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:41:16,441 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 31 proven. 68 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:41:16,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265877822] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:41:16,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:41:16,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 13] total 38 [2022-07-13 20:41:16,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107448289] [2022-07-13 20:41:16,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:41:16,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2022-07-13 20:41:16,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:41:16,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2022-07-13 20:41:16,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=1288, Unknown=0, NotChecked=0, Total=1406 [2022-07-13 20:41:16,444 INFO L87 Difference]: Start difference. First operand 6934 states and 9260 transitions. Second operand has 38 states, 38 states have (on average 8.31578947368421) internal successors, (316), 38 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:49,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:41:49,302 INFO L93 Difference]: Finished difference Result 42277 states and 52549 transitions. [2022-07-13 20:41:49,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 255 states. [2022-07-13 20:41:49,302 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 8.31578947368421) internal successors, (316), 38 states have internal predecessors, (316), 0 states have call successors, (0), 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 116 [2022-07-13 20:41:49,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:41:49,341 INFO L225 Difference]: With dead ends: 42277 [2022-07-13 20:41:49,342 INFO L226 Difference]: Without dead ends: 38075 [2022-07-13 20:41:49,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 499 GetRequests, 209 SyntacticMatches, 1 SemanticMatches, 289 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32519 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=9606, Invalid=74784, Unknown=0, NotChecked=0, Total=84390 [2022-07-13 20:41:49,354 INFO L413 NwaCegarLoop]: 1792 mSDtfsCounter, 26843 mSDsluCounter, 17634 mSDsCounter, 0 mSdLazyCounter, 5218 mSolverCounterSat, 353 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26843 SdHoareTripleChecker+Valid, 19426 SdHoareTripleChecker+Invalid, 5571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 353 IncrementalHoareTripleChecker+Valid, 5218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 20:41:49,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26843 Valid, 19426 Invalid, 5571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [353 Valid, 5218 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 20:41:49,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38075 states. [2022-07-13 20:41:52,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38075 to 14232. [2022-07-13 20:41:52,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14232 states, 14230 states have (on average 1.2621222768798313) internal successors, (17960), 14231 states have internal predecessors, (17960), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:52,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14232 states to 14232 states and 17960 transitions. [2022-07-13 20:41:52,279 INFO L78 Accepts]: Start accepts. Automaton has 14232 states and 17960 transitions. Word has length 116 [2022-07-13 20:41:52,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:41:52,279 INFO L495 AbstractCegarLoop]: Abstraction has 14232 states and 17960 transitions. [2022-07-13 20:41:52,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 8.31578947368421) internal successors, (316), 38 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:41:52,279 INFO L276 IsEmpty]: Start isEmpty. Operand 14232 states and 17960 transitions. [2022-07-13 20:41:52,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-13 20:41:52,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:41:52,282 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:41:52,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-13 20:41:52,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-13 20:41:52,499 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:41:52,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:41:52,499 INFO L85 PathProgramCache]: Analyzing trace with hash -295291818, now seen corresponding path program 1 times [2022-07-13 20:41:52,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:41:52,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840735897] [2022-07-13 20:41:52,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:41:52,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:41:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:41:52,736 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:41:52,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:41:52,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840735897] [2022-07-13 20:41:52,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840735897] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:41:52,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566948232] [2022-07-13 20:41:52,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:41:52,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:41:52,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:41:52,737 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:41:52,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 20:41:52,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:41:52,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-13 20:41:52,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:41:55,295 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:41:55,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:41:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 16 proven. 79 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:41:58,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566948232] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:41:58,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:41:58,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 17] total 42 [2022-07-13 20:41:58,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381656477] [2022-07-13 20:41:58,588 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:41:58,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-13 20:41:58,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:41:58,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-13 20:41:58,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=1631, Unknown=0, NotChecked=0, Total=1806 [2022-07-13 20:41:58,590 INFO L87 Difference]: Start difference. First operand 14232 states and 17960 transitions. Second operand has 43 states, 43 states have (on average 7.0) internal successors, (301), 42 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:42:32,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:42:32,806 INFO L93 Difference]: Finished difference Result 53978 states and 65098 transitions. [2022-07-13 20:42:32,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-07-13 20:42:32,807 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 43 states have (on average 7.0) internal successors, (301), 42 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2022-07-13 20:42:32,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:42:32,856 INFO L225 Difference]: With dead ends: 53978 [2022-07-13 20:42:32,857 INFO L226 Difference]: Without dead ends: 45194 [2022-07-13 20:42:32,870 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 202 SyntacticMatches, 2 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6544 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=2875, Invalid=18295, Unknown=0, NotChecked=0, Total=21170 [2022-07-13 20:42:32,870 INFO L413 NwaCegarLoop]: 1606 mSDtfsCounter, 26979 mSDsluCounter, 22618 mSDsCounter, 0 mSdLazyCounter, 2236 mSolverCounterSat, 371 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26979 SdHoareTripleChecker+Valid, 24224 SdHoareTripleChecker+Invalid, 3119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 2236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 512 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-13 20:42:32,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26979 Valid, 24224 Invalid, 3119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [371 Valid, 2236 Invalid, 0 Unknown, 512 Unchecked, 2.8s Time] [2022-07-13 20:42:32,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45194 states. [2022-07-13 20:42:39,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45194 to 25528. [2022-07-13 20:42:39,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25528 states, 25526 states have (on average 1.2292172686672413) internal successors, (31377), 25527 states have internal predecessors, (31377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:42:39,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25528 states to 25528 states and 31377 transitions. [2022-07-13 20:42:39,124 INFO L78 Accepts]: Start accepts. Automaton has 25528 states and 31377 transitions. Word has length 116 [2022-07-13 20:42:39,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:42:39,125 INFO L495 AbstractCegarLoop]: Abstraction has 25528 states and 31377 transitions. [2022-07-13 20:42:39,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 7.0) internal successors, (301), 42 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:42:39,125 INFO L276 IsEmpty]: Start isEmpty. Operand 25528 states and 31377 transitions. [2022-07-13 20:42:39,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-13 20:42:39,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:42:39,127 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:42:39,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 20:42:39,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:42:39,339 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:42:39,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:42:39,340 INFO L85 PathProgramCache]: Analyzing trace with hash 829287974, now seen corresponding path program 1 times [2022-07-13 20:42:39,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:42:39,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127087394] [2022-07-13 20:42:39,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:42:39,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:42:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:42:39,384 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-13 20:42:39,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:42:39,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127087394] [2022-07-13 20:42:39,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127087394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 20:42:39,385 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 20:42:39,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 20:42:39,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456048816] [2022-07-13 20:42:39,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 20:42:39,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 20:42:39,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:42:39,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 20:42:39,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 20:42:39,389 INFO L87 Difference]: Start difference. First operand 25528 states and 31377 transitions. Second operand has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:42:45,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:42:45,041 INFO L93 Difference]: Finished difference Result 45843 states and 55928 transitions. [2022-07-13 20:42:45,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 20:42:45,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 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 116 [2022-07-13 20:42:45,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:42:45,070 INFO L225 Difference]: With dead ends: 45843 [2022-07-13 20:42:45,071 INFO L226 Difference]: Without dead ends: 23020 [2022-07-13 20:42:45,086 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-07-13 20:42:45,087 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 1550 mSDsluCounter, 2977 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1550 SdHoareTripleChecker+Valid, 4489 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 20:42:45,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1550 Valid, 4489 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 20:42:45,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23020 states. [2022-07-13 20:42:50,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23020 to 21436. [2022-07-13 20:42:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21436 states, 21434 states have (on average 1.2316413175328917) internal successors, (26399), 21435 states have internal predecessors, (26399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:42:50,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21436 states to 21436 states and 26399 transitions. [2022-07-13 20:42:50,339 INFO L78 Accepts]: Start accepts. Automaton has 21436 states and 26399 transitions. Word has length 116 [2022-07-13 20:42:50,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:42:50,339 INFO L495 AbstractCegarLoop]: Abstraction has 21436 states and 26399 transitions. [2022-07-13 20:42:50,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.6) internal successors, (108), 5 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:42:50,339 INFO L276 IsEmpty]: Start isEmpty. Operand 21436 states and 26399 transitions. [2022-07-13 20:42:50,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 20:42:50,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:42:50,341 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:42:50,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 20:42:50,342 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:42:50,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:42:50,342 INFO L85 PathProgramCache]: Analyzing trace with hash 390075559, now seen corresponding path program 1 times [2022-07-13 20:42:50,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:42:50,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168404106] [2022-07-13 20:42:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:42:50,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:42:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:42:50,500 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:42:50,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:42:50,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168404106] [2022-07-13 20:42:50,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168404106] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:42:50,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569229378] [2022-07-13 20:42:50,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:42:50,500 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:42:50,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:42:50,501 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:42:50,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 20:42:50,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:42:50,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 453 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-13 20:42:50,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:42:51,807 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:42:51,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 20:42:54,069 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 32 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:42:54,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569229378] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 20:42:54,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 20:42:54,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 17, 17] total 39 [2022-07-13 20:42:54,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149019971] [2022-07-13 20:42:54,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 20:42:54,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-13 20:42:54,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 20:42:54,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-13 20:42:54,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1341, Unknown=0, NotChecked=0, Total=1560 [2022-07-13 20:42:54,071 INFO L87 Difference]: Start difference. First operand 21436 states and 26399 transitions. Second operand has 40 states, 40 states have (on average 7.325) internal successors, (293), 39 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:05,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 20:43:05,672 INFO L93 Difference]: Finished difference Result 42484 states and 51452 transitions. [2022-07-13 20:43:05,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-13 20:43:05,673 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 40 states have (on average 7.325) internal successors, (293), 39 states have internal predecessors, (293), 0 states have call successors, (0), 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 117 [2022-07-13 20:43:05,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 20:43:05,701 INFO L225 Difference]: With dead ends: 42484 [2022-07-13 20:43:05,701 INFO L226 Difference]: Without dead ends: 24100 [2022-07-13 20:43:05,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 204 SyntacticMatches, 1 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2065 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=1688, Invalid=6684, Unknown=0, NotChecked=0, Total=8372 [2022-07-13 20:43:05,715 INFO L413 NwaCegarLoop]: 1537 mSDtfsCounter, 17104 mSDsluCounter, 15853 mSDsCounter, 0 mSdLazyCounter, 1111 mSolverCounterSat, 431 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17104 SdHoareTripleChecker+Valid, 17390 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 431 IncrementalHoareTripleChecker+Valid, 1111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 20:43:05,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17104 Valid, 17390 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [431 Valid, 1111 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 20:43:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24100 states. [2022-07-13 20:43:09,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24100 to 15281. [2022-07-13 20:43:09,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15281 states, 15279 states have (on average 1.2419006479481642) internal successors, (18975), 15280 states have internal predecessors, (18975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:09,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15281 states to 15281 states and 18975 transitions. [2022-07-13 20:43:09,898 INFO L78 Accepts]: Start accepts. Automaton has 15281 states and 18975 transitions. Word has length 117 [2022-07-13 20:43:09,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 20:43:09,898 INFO L495 AbstractCegarLoop]: Abstraction has 15281 states and 18975 transitions. [2022-07-13 20:43:09,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 7.325) internal successors, (293), 39 states have internal predecessors, (293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 20:43:09,899 INFO L276 IsEmpty]: Start isEmpty. Operand 15281 states and 18975 transitions. [2022-07-13 20:43:09,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 20:43:09,900 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 20:43:09,900 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 20:43:09,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 20:43:10,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:43:10,102 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 20:43:10,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 20:43:10,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1143648345, now seen corresponding path program 1 times [2022-07-13 20:43:10,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 20:43:10,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87178287] [2022-07-13 20:43:10,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:10,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 20:43:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 16 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:10,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 20:43:10,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87178287] [2022-07-13 20:43:10,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87178287] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 20:43:10,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1794274404] [2022-07-13 20:43:10,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 20:43:10,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 20:43:10,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 20:43:10,447 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 20:43:10,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 20:43:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 20:43:10,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-13 20:43:10,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 20:43:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 20:43:11,773 INFO L328 TraceCheckSpWp]: Computing backward predicates...