./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem03_label09.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/eca-rers2012/Problem03_label09.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 759500fc885fd8551afb1744440c02e812929b084934756d49ccfd6e6b033437 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 11:45:58,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 11:45:58,879 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 11:45:58,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 11:45:58,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 11:45:58,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 11:45:58,936 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 11:45:58,939 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 11:45:58,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 11:45:58,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 11:45:58,946 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 11:45:58,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 11:45:58,948 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 11:45:58,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 11:45:58,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 11:45:58,954 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 11:45:58,955 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 11:45:58,957 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 11:45:58,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 11:45:58,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 11:45:58,966 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 11:45:58,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 11:45:58,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 11:45:58,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 11:45:58,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 11:45:58,976 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 11:45:58,976 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 11:45:58,977 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 11:45:58,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 11:45:58,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 11:45:58,979 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 11:45:58,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 11:45:58,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 11:45:58,983 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 11:45:58,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 11:45:58,984 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 11:45:58,984 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 11:45:58,985 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 11:45:58,985 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 11:45:58,985 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 11:45:58,986 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 11:45:58,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 11:45:58,989 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 11:45:59,016 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 11:45:59,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 11:45:59,018 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 11:45:59,018 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 11:45:59,019 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 11:45:59,019 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 11:45:59,020 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 11:45:59,020 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 11:45:59,021 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 11:45:59,021 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 11:45:59,022 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 11:45:59,022 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 11:45:59,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 11:45:59,022 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 11:45:59,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 11:45:59,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 11:45:59,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 11:45:59,023 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 11:45:59,025 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 11:45:59,025 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 11:45:59,025 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 11:45:59,025 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 11:45:59,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 11:45:59,026 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 11:45:59,026 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:45:59,026 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 11:45:59,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 11:45:59,027 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 11:45:59,027 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 11:45:59,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 11:45:59,028 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 11:45:59,028 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 11:45:59,028 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 11:45:59,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 759500fc885fd8551afb1744440c02e812929b084934756d49ccfd6e6b033437 [2022-07-13 11:45:59,283 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 11:45:59,323 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 11:45:59,326 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 11:45:59,327 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 11:45:59,328 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 11:45:59,329 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem03_label09.c [2022-07-13 11:45:59,387 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae66dcc43/ea742d45409a47ee9166ffd6acfea108/FLAG3caad9534 [2022-07-13 11:45:59,953 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 11:45:59,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem03_label09.c [2022-07-13 11:45:59,969 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae66dcc43/ea742d45409a47ee9166ffd6acfea108/FLAG3caad9534 [2022-07-13 11:46:00,405 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae66dcc43/ea742d45409a47ee9166ffd6acfea108 [2022-07-13 11:46:00,407 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 11:46:00,408 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 11:46:00,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 11:46:00,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 11:46:00,414 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 11:46:00,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:46:00" (1/1) ... [2022-07-13 11:46:00,416 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d9be479 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:00, skipping insertion in model container [2022-07-13 11:46:00,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:46:00" (1/1) ... [2022-07-13 11:46:00,422 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 11:46:00,490 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 11:46:01,057 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/eca-rers2012/Problem03_label09.c[54191,54204] [2022-07-13 11:46:01,108 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:46:01,118 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 11:46:01,356 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/eca-rers2012/Problem03_label09.c[54191,54204] [2022-07-13 11:46:01,372 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 11:46:01,388 INFO L208 MainTranslator]: Completed translation [2022-07-13 11:46:01,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:01 WrapperNode [2022-07-13 11:46:01,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 11:46:01,391 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 11:46:01,391 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 11:46:01,391 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 11:46:01,398 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:01" (1/1) ... [2022-07-13 11:46:01,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:01" (1/1) ... [2022-07-13 11:46:01,504 INFO L137 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 1771 [2022-07-13 11:46:01,505 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 11:46:01,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 11:46:01,506 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 11:46:01,506 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 11:46:01,514 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:01" (1/1) ... [2022-07-13 11:46:01,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:01" (1/1) ... [2022-07-13 11:46:01,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:01" (1/1) ... [2022-07-13 11:46:01,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:01" (1/1) ... [2022-07-13 11:46:01,571 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:01" (1/1) ... [2022-07-13 11:46:01,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:01" (1/1) ... [2022-07-13 11:46:01,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:01" (1/1) ... [2022-07-13 11:46:01,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 11:46:01,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 11:46:01,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 11:46:01,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 11:46:01,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:01" (1/1) ... [2022-07-13 11:46:01,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 11:46:01,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:01,673 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 11:46:01,686 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 11:46:01,715 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 11:46:01,716 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 11:46:01,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 11:46:01,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 11:46:01,781 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 11:46:01,782 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 11:46:03,146 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 11:46:03,155 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 11:46:03,155 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 11:46:03,157 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:46:03 BoogieIcfgContainer [2022-07-13 11:46:03,157 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 11:46:03,159 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 11:46:03,159 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 11:46:03,162 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 11:46:03,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:46:00" (1/3) ... [2022-07-13 11:46:03,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fee4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:46:03, skipping insertion in model container [2022-07-13 11:46:03,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:46:01" (2/3) ... [2022-07-13 11:46:03,164 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fee4f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:46:03, skipping insertion in model container [2022-07-13 11:46:03,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:46:03" (3/3) ... [2022-07-13 11:46:03,165 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label09.c [2022-07-13 11:46:03,178 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 11:46:03,179 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 11:46:03,225 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 11:46:03,231 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@12f5fdd4, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@77b39e2d [2022-07-13 11:46:03,231 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 11:46:03,236 INFO L276 IsEmpty]: Start isEmpty. Operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 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 11:46:03,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-13 11:46:03,251 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:03,252 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:03,253 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:03,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:03,258 INFO L85 PathProgramCache]: Analyzing trace with hash 539726418, now seen corresponding path program 1 times [2022-07-13 11:46:03,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:03,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646157047] [2022-07-13 11:46:03,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:03,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:03,766 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 11:46:03,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:03,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1646157047] [2022-07-13 11:46:03,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1646157047] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:03,768 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:03,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:03,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003431350] [2022-07-13 11:46:03,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:03,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:03,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:03,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:03,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:03,820 INFO L87 Difference]: Start difference. First operand has 302 states, 300 states have (on average 1.73) internal successors, (519), 301 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 11:46:04,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:04,730 INFO L93 Difference]: Finished difference Result 840 states and 1490 transitions. [2022-07-13 11:46:04,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:04,733 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 148 [2022-07-13 11:46:04,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:04,745 INFO L225 Difference]: With dead ends: 840 [2022-07-13 11:46:04,745 INFO L226 Difference]: Without dead ends: 460 [2022-07-13 11:46:04,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:04,752 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 116 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 688 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 134 SdHoareTripleChecker+Invalid, 885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 688 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:04,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 134 Invalid, 885 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 688 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-13 11:46:04,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 460 states. [2022-07-13 11:46:04,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 460 to 445. [2022-07-13 11:46:04,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 1.614864864864865) internal successors, (717), 444 states have internal predecessors, (717), 0 states have call successors, (0), 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 11:46:04,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 717 transitions. [2022-07-13 11:46:04,809 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 717 transitions. Word has length 148 [2022-07-13 11:46:04,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:04,810 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 717 transitions. [2022-07-13 11:46:04,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.333333333333336) internal successors, (148), 2 states have internal predecessors, (148), 0 states have call successors, (0), 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 11:46:04,810 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 717 transitions. [2022-07-13 11:46:04,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-13 11:46:04,813 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:04,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:04,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 11:46:04,814 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:04,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1580690910, now seen corresponding path program 1 times [2022-07-13 11:46:04,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:04,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630721015] [2022-07-13 11:46:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:04,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:04,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:04,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:04,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630721015] [2022-07-13 11:46:04,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630721015] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:04,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:04,901 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:04,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537284209] [2022-07-13 11:46:04,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:04,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:04,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:04,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:04,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:04,904 INFO L87 Difference]: Start difference. First operand 445 states and 717 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 11:46:05,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:05,617 INFO L93 Difference]: Finished difference Result 1324 states and 2138 transitions. [2022-07-13 11:46:05,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:05,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2022-07-13 11:46:05,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:05,625 INFO L225 Difference]: With dead ends: 1324 [2022-07-13 11:46:05,625 INFO L226 Difference]: Without dead ends: 881 [2022-07-13 11:46:05,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:05,628 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 285 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:05,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 125 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:05,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-07-13 11:46:05,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 877. [2022-07-13 11:46:05,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 877 states, 876 states have (on average 1.595890410958904) internal successors, (1398), 876 states have internal predecessors, (1398), 0 states have call successors, (0), 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 11:46:05,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 877 states to 877 states and 1398 transitions. [2022-07-13 11:46:05,664 INFO L78 Accepts]: Start accepts. Automaton has 877 states and 1398 transitions. Word has length 154 [2022-07-13 11:46:05,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:05,664 INFO L495 AbstractCegarLoop]: Abstraction has 877 states and 1398 transitions. [2022-07-13 11:46:05,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 11:46:05,665 INFO L276 IsEmpty]: Start isEmpty. Operand 877 states and 1398 transitions. [2022-07-13 11:46:05,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-13 11:46:05,670 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:05,670 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:05,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 11:46:05,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:05,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:05,672 INFO L85 PathProgramCache]: Analyzing trace with hash 372926902, now seen corresponding path program 1 times [2022-07-13 11:46:05,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:05,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83498945] [2022-07-13 11:46:05,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:05,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:05,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:05,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83498945] [2022-07-13 11:46:05,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83498945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:05,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:05,753 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:05,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059769526] [2022-07-13 11:46:05,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:05,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:05,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:05,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:05,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:05,755 INFO L87 Difference]: Start difference. First operand 877 states and 1398 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 11:46:06,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:06,493 INFO L93 Difference]: Finished difference Result 2565 states and 4101 transitions. [2022-07-13 11:46:06,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:06,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 154 [2022-07-13 11:46:06,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:06,501 INFO L225 Difference]: With dead ends: 2565 [2022-07-13 11:46:06,501 INFO L226 Difference]: Without dead ends: 1690 [2022-07-13 11:46:06,504 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:06,505 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 214 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:06,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 194 Invalid, 694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:06,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1690 states. [2022-07-13 11:46:06,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1690 to 1690. [2022-07-13 11:46:06,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1690 states, 1689 states have (on average 1.3848431024274719) internal successors, (2339), 1689 states have internal predecessors, (2339), 0 states have call successors, (0), 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 11:46:06,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1690 states to 1690 states and 2339 transitions. [2022-07-13 11:46:06,542 INFO L78 Accepts]: Start accepts. Automaton has 1690 states and 2339 transitions. Word has length 154 [2022-07-13 11:46:06,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:06,543 INFO L495 AbstractCegarLoop]: Abstraction has 1690 states and 2339 transitions. [2022-07-13 11:46:06,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 2 states have internal predecessors, (154), 0 states have call successors, (0), 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 11:46:06,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1690 states and 2339 transitions. [2022-07-13 11:46:06,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-13 11:46:06,548 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:06,548 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:06,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 11:46:06,549 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:06,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:06,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1706333507, now seen corresponding path program 1 times [2022-07-13 11:46:06,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:06,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180956373] [2022-07-13 11:46:06,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:06,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:06,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:06,669 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 11:46:06,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:06,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180956373] [2022-07-13 11:46:06,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180956373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:06,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:06,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:06,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368028357] [2022-07-13 11:46:06,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:06,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:06,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:06,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:06,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:06,673 INFO L87 Difference]: Start difference. First operand 1690 states and 2339 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 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 11:46:07,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:07,418 INFO L93 Difference]: Finished difference Result 5031 states and 6975 transitions. [2022-07-13 11:46:07,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:07,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 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 162 [2022-07-13 11:46:07,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:07,430 INFO L225 Difference]: With dead ends: 5031 [2022-07-13 11:46:07,431 INFO L226 Difference]: Without dead ends: 3343 [2022-07-13 11:46:07,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:07,436 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 247 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 92 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:07,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 92 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:07,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3343 states. [2022-07-13 11:46:07,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3343 to 3319. [2022-07-13 11:46:07,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3319 states, 3318 states have (on average 1.3580470162748643) internal successors, (4506), 3318 states have internal predecessors, (4506), 0 states have call successors, (0), 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 11:46:07,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3319 states to 3319 states and 4506 transitions. [2022-07-13 11:46:07,518 INFO L78 Accepts]: Start accepts. Automaton has 3319 states and 4506 transitions. Word has length 162 [2022-07-13 11:46:07,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:07,519 INFO L495 AbstractCegarLoop]: Abstraction has 3319 states and 4506 transitions. [2022-07-13 11:46:07,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 2 states have internal predecessors, (159), 0 states have call successors, (0), 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 11:46:07,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3319 states and 4506 transitions. [2022-07-13 11:46:07,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-13 11:46:07,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:07,526 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:07,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 11:46:07,527 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:07,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:07,527 INFO L85 PathProgramCache]: Analyzing trace with hash 124388204, now seen corresponding path program 1 times [2022-07-13 11:46:07,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:07,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886615248] [2022-07-13 11:46:07,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:07,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:07,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:07,635 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 11:46:07,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:07,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886615248] [2022-07-13 11:46:07,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886615248] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:07,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:07,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:07,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27908215] [2022-07-13 11:46:07,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:07,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:07,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:07,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:07,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:07,641 INFO L87 Difference]: Start difference. First operand 3319 states and 4506 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 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 11:46:07,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:07,938 INFO L93 Difference]: Finished difference Result 9930 states and 13482 transitions. [2022-07-13 11:46:07,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:07,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 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 177 [2022-07-13 11:46:07,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:07,965 INFO L225 Difference]: With dead ends: 9930 [2022-07-13 11:46:07,965 INFO L226 Difference]: Without dead ends: 6613 [2022-07-13 11:46:07,973 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 11:46:07,977 INFO L413 NwaCegarLoop]: 291 mSDtfsCounter, 353 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 546 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:07,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 546 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 11:46:07,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6613 states. [2022-07-13 11:46:08,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6613 to 6611. [2022-07-13 11:46:08,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6611 states, 6610 states have (on average 1.3556732223903176) internal successors, (8961), 6610 states have internal predecessors, (8961), 0 states have call successors, (0), 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 11:46:08,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6611 states to 6611 states and 8961 transitions. [2022-07-13 11:46:08,122 INFO L78 Accepts]: Start accepts. Automaton has 6611 states and 8961 transitions. Word has length 177 [2022-07-13 11:46:08,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:08,122 INFO L495 AbstractCegarLoop]: Abstraction has 6611 states and 8961 transitions. [2022-07-13 11:46:08,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 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 11:46:08,123 INFO L276 IsEmpty]: Start isEmpty. Operand 6611 states and 8961 transitions. [2022-07-13 11:46:08,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-13 11:46:08,132 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:08,133 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:08,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 11:46:08,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:08,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:08,134 INFO L85 PathProgramCache]: Analyzing trace with hash 1269933760, now seen corresponding path program 1 times [2022-07-13 11:46:08,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:08,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561255651] [2022-07-13 11:46:08,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:08,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:08,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-13 11:46:08,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:08,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561255651] [2022-07-13 11:46:08,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561255651] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:08,217 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:08,217 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:08,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105501165] [2022-07-13 11:46:08,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:08,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:08,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:08,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:08,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:08,219 INFO L87 Difference]: Start difference. First operand 6611 states and 8961 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 11:46:08,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:08,992 INFO L93 Difference]: Finished difference Result 17711 states and 24465 transitions. [2022-07-13 11:46:08,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:08,993 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 183 [2022-07-13 11:46:08,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:09,036 INFO L225 Difference]: With dead ends: 17711 [2022-07-13 11:46:09,037 INFO L226 Difference]: Without dead ends: 11102 [2022-07-13 11:46:09,050 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 11:46:09,051 INFO L413 NwaCegarLoop]: 345 mSDtfsCounter, 203 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 367 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:09,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 367 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:09,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11102 states. [2022-07-13 11:46:09,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11102 to 11090. [2022-07-13 11:46:09,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11090 states, 11089 states have (on average 1.3069708720353503) internal successors, (14493), 11089 states have internal predecessors, (14493), 0 states have call successors, (0), 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 11:46:09,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11090 states to 11090 states and 14493 transitions. [2022-07-13 11:46:09,342 INFO L78 Accepts]: Start accepts. Automaton has 11090 states and 14493 transitions. Word has length 183 [2022-07-13 11:46:09,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:09,344 INFO L495 AbstractCegarLoop]: Abstraction has 11090 states and 14493 transitions. [2022-07-13 11:46:09,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 11:46:09,345 INFO L276 IsEmpty]: Start isEmpty. Operand 11090 states and 14493 transitions. [2022-07-13 11:46:09,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-13 11:46:09,360 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:09,361 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:09,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 11:46:09,361 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:09,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:09,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1390252888, now seen corresponding path program 1 times [2022-07-13 11:46:09,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:09,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581534241] [2022-07-13 11:46:09,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:09,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:09,494 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 11:46:09,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:09,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581534241] [2022-07-13 11:46:09,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581534241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:09,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:09,495 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:09,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300341295] [2022-07-13 11:46:09,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:09,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:09,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:09,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:09,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:09,497 INFO L87 Difference]: Start difference. First operand 11090 states and 14493 transitions. Second operand has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 11:46:10,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:10,320 INFO L93 Difference]: Finished difference Result 26673 states and 34918 transitions. [2022-07-13 11:46:10,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:10,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 196 [2022-07-13 11:46:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:10,370 INFO L225 Difference]: With dead ends: 26673 [2022-07-13 11:46:10,371 INFO L226 Difference]: Without dead ends: 15585 [2022-07-13 11:46:10,385 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 11:46:10,388 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 210 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:10,389 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [210 Valid, 374 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:10,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15585 states. [2022-07-13 11:46:10,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15585 to 15562. [2022-07-13 11:46:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15562 states, 15561 states have (on average 1.2614227877385773) internal successors, (19629), 15561 states have internal predecessors, (19629), 0 states have call successors, (0), 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 11:46:10,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15562 states to 15562 states and 19629 transitions. [2022-07-13 11:46:10,669 INFO L78 Accepts]: Start accepts. Automaton has 15562 states and 19629 transitions. Word has length 196 [2022-07-13 11:46:10,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:10,669 INFO L495 AbstractCegarLoop]: Abstraction has 15562 states and 19629 transitions. [2022-07-13 11:46:10,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 58.0) internal successors, (174), 3 states have internal predecessors, (174), 0 states have call successors, (0), 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 11:46:10,670 INFO L276 IsEmpty]: Start isEmpty. Operand 15562 states and 19629 transitions. [2022-07-13 11:46:10,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-13 11:46:10,689 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:10,689 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:10,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 11:46:10,690 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:10,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:10,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1479992100, now seen corresponding path program 1 times [2022-07-13 11:46:10,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:10,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79482912] [2022-07-13 11:46:10,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:10,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:10,840 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 11:46:10,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:10,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79482912] [2022-07-13 11:46:10,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79482912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:10,841 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:10,841 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:10,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796439706] [2022-07-13 11:46:10,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:10,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:10,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:10,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:10,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:10,843 INFO L87 Difference]: Start difference. First operand 15562 states and 19629 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 11:46:11,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:11,723 INFO L93 Difference]: Finished difference Result 40317 states and 51231 transitions. [2022-07-13 11:46:11,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:11,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 196 [2022-07-13 11:46:11,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:11,783 INFO L225 Difference]: With dead ends: 40317 [2022-07-13 11:46:11,784 INFO L226 Difference]: Without dead ends: 24757 [2022-07-13 11:46:11,808 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:11,809 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 217 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 217 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:11,811 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [217 Valid, 165 Invalid, 764 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:11,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24757 states. [2022-07-13 11:46:12,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24757 to 24741. [2022-07-13 11:46:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24741 states, 24740 states have (on average 1.2493128536782538) internal successors, (30908), 24740 states have internal predecessors, (30908), 0 states have call successors, (0), 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 11:46:12,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24741 states to 24741 states and 30908 transitions. [2022-07-13 11:46:12,323 INFO L78 Accepts]: Start accepts. Automaton has 24741 states and 30908 transitions. Word has length 196 [2022-07-13 11:46:12,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:12,324 INFO L495 AbstractCegarLoop]: Abstraction has 24741 states and 30908 transitions. [2022-07-13 11:46:12,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 0 states have call successors, (0), 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 11:46:12,324 INFO L276 IsEmpty]: Start isEmpty. Operand 24741 states and 30908 transitions. [2022-07-13 11:46:12,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-13 11:46:12,349 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:12,349 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:12,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 11:46:12,352 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:12,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:12,353 INFO L85 PathProgramCache]: Analyzing trace with hash -268548328, now seen corresponding path program 1 times [2022-07-13 11:46:12,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:12,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644694120] [2022-07-13 11:46:12,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:12,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:12,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:12,417 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-13 11:46:12,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:12,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644694120] [2022-07-13 11:46:12,418 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644694120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:12,418 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:12,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:12,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944868236] [2022-07-13 11:46:12,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:12,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:12,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:12,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:12,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:12,421 INFO L87 Difference]: Start difference. First operand 24741 states and 30908 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 11:46:13,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:13,301 INFO L93 Difference]: Finished difference Result 64753 states and 81330 transitions. [2022-07-13 11:46:13,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:13,302 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 209 [2022-07-13 11:46:13,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:13,380 INFO L225 Difference]: With dead ends: 64753 [2022-07-13 11:46:13,380 INFO L226 Difference]: Without dead ends: 40217 [2022-07-13 11:46:13,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:13,410 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 243 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 187 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:13,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 187 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:13,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40217 states. [2022-07-13 11:46:14,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40217 to 39799. [2022-07-13 11:46:14,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39799 states, 39798 states have (on average 1.2259410020604051) internal successors, (48790), 39798 states have internal predecessors, (48790), 0 states have call successors, (0), 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 11:46:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39799 states to 39799 states and 48790 transitions. [2022-07-13 11:46:14,164 INFO L78 Accepts]: Start accepts. Automaton has 39799 states and 48790 transitions. Word has length 209 [2022-07-13 11:46:14,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:14,165 INFO L495 AbstractCegarLoop]: Abstraction has 39799 states and 48790 transitions. [2022-07-13 11:46:14,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 11:46:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 39799 states and 48790 transitions. [2022-07-13 11:46:14,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-13 11:46:14,198 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:14,198 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:14,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 11:46:14,199 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:14,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:14,199 INFO L85 PathProgramCache]: Analyzing trace with hash 527840323, now seen corresponding path program 1 times [2022-07-13 11:46:14,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:14,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28693924] [2022-07-13 11:46:14,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:14,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-13 11:46:14,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:14,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28693924] [2022-07-13 11:46:14,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28693924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:14,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:14,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:14,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727209373] [2022-07-13 11:46:14,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:14,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:46:14,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:14,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:46:14,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:46:14,287 INFO L87 Difference]: Start difference. First operand 39799 states and 48790 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 11:46:15,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:15,703 INFO L93 Difference]: Finished difference Result 79473 states and 97517 transitions. [2022-07-13 11:46:15,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:46:15,704 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 212 [2022-07-13 11:46:15,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:15,773 INFO L225 Difference]: With dead ends: 79473 [2022-07-13 11:46:15,774 INFO L226 Difference]: Without dead ends: 39879 [2022-07-13 11:46:15,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:46:15,805 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 446 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 1413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:15,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [446 Valid, 160 Invalid, 1413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-13 11:46:15,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39879 states. [2022-07-13 11:46:16,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39879 to 38581. [2022-07-13 11:46:16,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38581 states, 38580 states have (on average 1.225194401244168) internal successors, (47268), 38580 states have internal predecessors, (47268), 0 states have call successors, (0), 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 11:46:16,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38581 states to 38581 states and 47268 transitions. [2022-07-13 11:46:16,356 INFO L78 Accepts]: Start accepts. Automaton has 38581 states and 47268 transitions. Word has length 212 [2022-07-13 11:46:16,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:16,357 INFO L495 AbstractCegarLoop]: Abstraction has 38581 states and 47268 transitions. [2022-07-13 11:46:16,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 3 states have internal predecessors, (195), 0 states have call successors, (0), 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 11:46:16,357 INFO L276 IsEmpty]: Start isEmpty. Operand 38581 states and 47268 transitions. [2022-07-13 11:46:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-13 11:46:16,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:16,379 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:16,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 11:46:16,379 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:16,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:16,380 INFO L85 PathProgramCache]: Analyzing trace with hash 661172759, now seen corresponding path program 1 times [2022-07-13 11:46:16,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:16,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801708621] [2022-07-13 11:46:16,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:16,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:16,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:16,465 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 73 proven. 6 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-13 11:46:16,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:16,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801708621] [2022-07-13 11:46:16,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801708621] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:46:16,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655910179] [2022-07-13 11:46:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:16,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:16,467 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:16,471 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 11:46:16,480 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 11:46:16,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:16,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:46:16,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:46:17,032 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-13 11:46:17,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:46:17,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655910179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:17,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:46:17,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:46:17,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214155396] [2022-07-13 11:46:17,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:17,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:17,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:17,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:17,044 INFO L87 Difference]: Start difference. First operand 38581 states and 47268 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 11:46:18,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:18,148 INFO L93 Difference]: Finished difference Result 109097 states and 133922 transitions. [2022-07-13 11:46:18,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:18,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 216 [2022-07-13 11:46:18,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:18,248 INFO L225 Difference]: With dead ends: 109097 [2022-07-13 11:46:18,248 INFO L226 Difference]: Without dead ends: 70721 [2022-07-13 11:46:18,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 215 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:18,288 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 116 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:18,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 197 Invalid, 724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:18,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70721 states. [2022-07-13 11:46:19,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70721 to 70714. [2022-07-13 11:46:19,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70714 states, 70713 states have (on average 1.2012218403970982) internal successors, (84942), 70713 states have internal predecessors, (84942), 0 states have call successors, (0), 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 11:46:19,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70714 states to 70714 states and 84942 transitions. [2022-07-13 11:46:19,442 INFO L78 Accepts]: Start accepts. Automaton has 70714 states and 84942 transitions. Word has length 216 [2022-07-13 11:46:19,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:19,442 INFO L495 AbstractCegarLoop]: Abstraction has 70714 states and 84942 transitions. [2022-07-13 11:46:19,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 11:46:19,443 INFO L276 IsEmpty]: Start isEmpty. Operand 70714 states and 84942 transitions. [2022-07-13 11:46:19,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-07-13 11:46:19,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:19,474 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:19,503 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 11:46:19,687 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,SelfDestructingSolverStorable10 [2022-07-13 11:46:19,688 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:19,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:19,688 INFO L85 PathProgramCache]: Analyzing trace with hash 626372462, now seen corresponding path program 1 times [2022-07-13 11:46:19,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:19,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849595618] [2022-07-13 11:46:19,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:19,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:19,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:19,926 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 80 proven. 6 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-13 11:46:19,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:19,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849595618] [2022-07-13 11:46:19,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849595618] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:46:19,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276673009] [2022-07-13 11:46:19,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:19,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:19,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:19,929 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 11:46:19,930 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 11:46:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:20,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:46:20,100 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:46:20,302 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-13 11:46:20,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:46:20,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [276673009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:20,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:46:20,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:46:20,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789820837] [2022-07-13 11:46:20,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:20,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:20,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:20,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:20,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:20,305 INFO L87 Difference]: Start difference. First operand 70714 states and 84942 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 11:46:21,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:21,560 INFO L93 Difference]: Finished difference Result 168929 states and 203989 transitions. [2022-07-13 11:46:21,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:21,561 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 219 [2022-07-13 11:46:21,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:21,705 INFO L225 Difference]: With dead ends: 168929 [2022-07-13 11:46:21,705 INFO L226 Difference]: Without dead ends: 98420 [2022-07-13 11:46:21,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:21,750 INFO L413 NwaCegarLoop]: 175 mSDtfsCounter, 123 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:21,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 207 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:46:21,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98420 states. [2022-07-13 11:46:22,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98420 to 98391. [2022-07-13 11:46:23,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98391 states, 98390 states have (on average 1.1933123284886675) internal successors, (117410), 98390 states have internal predecessors, (117410), 0 states have call successors, (0), 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 11:46:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98391 states to 98391 states and 117410 transitions. [2022-07-13 11:46:23,220 INFO L78 Accepts]: Start accepts. Automaton has 98391 states and 117410 transitions. Word has length 219 [2022-07-13 11:46:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:23,220 INFO L495 AbstractCegarLoop]: Abstraction has 98391 states and 117410 transitions. [2022-07-13 11:46:23,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 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 11:46:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand 98391 states and 117410 transitions. [2022-07-13 11:46:23,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-07-13 11:46:23,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:23,312 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:23,329 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 11:46:23,512 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,SelfDestructingSolverStorable11 [2022-07-13 11:46:23,513 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:23,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:23,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1724883102, now seen corresponding path program 1 times [2022-07-13 11:46:23,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:23,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996096119] [2022-07-13 11:46:23,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:23,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:23,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:23,915 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 93 proven. 6 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 11:46:23,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:23,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996096119] [2022-07-13 11:46:23,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996096119] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:46:23,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1842289160] [2022-07-13 11:46:23,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:23,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:23,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:23,918 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 11:46:23,948 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 11:46:24,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:24,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 546 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:46:24,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:46:24,153 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 164 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 11:46:24,154 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:46:24,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1842289160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:24,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:46:24,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2022-07-13 11:46:24,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082173424] [2022-07-13 11:46:24,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:24,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:24,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:24,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:24,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:24,156 INFO L87 Difference]: Start difference. First operand 98391 states and 117410 transitions. Second operand has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 11:46:25,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:25,662 INFO L93 Difference]: Finished difference Result 215646 states and 260288 transitions. [2022-07-13 11:46:25,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:25,663 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 257 [2022-07-13 11:46:25,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:25,846 INFO L225 Difference]: With dead ends: 215646 [2022-07-13 11:46:25,846 INFO L226 Difference]: Without dead ends: 117460 [2022-07-13 11:46:25,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 256 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:25,885 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 179 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:25,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 403 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 527 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117460 states. [2022-07-13 11:46:27,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117460 to 106076. [2022-07-13 11:46:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106076 states, 106075 states have (on average 1.1679566344567522) internal successors, (123891), 106075 states have internal predecessors, (123891), 0 states have call successors, (0), 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 11:46:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106076 states to 106076 states and 123891 transitions. [2022-07-13 11:46:27,762 INFO L78 Accepts]: Start accepts. Automaton has 106076 states and 123891 transitions. Word has length 257 [2022-07-13 11:46:27,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:27,762 INFO L495 AbstractCegarLoop]: Abstraction has 106076 states and 123891 transitions. [2022-07-13 11:46:27,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.0) internal successors, (240), 3 states have internal predecessors, (240), 0 states have call successors, (0), 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 11:46:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 106076 states and 123891 transitions. [2022-07-13 11:46:27,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-07-13 11:46:27,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:27,830 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:27,847 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 11:46:28,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:28,031 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:28,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:28,031 INFO L85 PathProgramCache]: Analyzing trace with hash -919874366, now seen corresponding path program 1 times [2022-07-13 11:46:28,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:28,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564465310] [2022-07-13 11:46:28,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:28,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:28,148 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 117 proven. 6 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-13 11:46:28,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:28,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564465310] [2022-07-13 11:46:28,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564465310] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:46:28,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162028481] [2022-07-13 11:46:28,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:28,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:28,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:28,151 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 11:46:28,153 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 11:46:28,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:28,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 11:46:28,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:46:28,471 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 206 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 11:46:28,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 11:46:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 206 proven. 26 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-13 11:46:28,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162028481] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 11:46:28,577 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 11:46:28,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 6 [2022-07-13 11:46:28,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021785286] [2022-07-13 11:46:28,578 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 11:46:28,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 11:46:28,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:28,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 11:46:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 11:46:28,581 INFO L87 Difference]: Start difference. First operand 106076 states and 123891 transitions. Second operand has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 0 states have call successors, (0), 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 11:46:33,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:33,230 INFO L93 Difference]: Finished difference Result 342959 states and 398779 transitions. [2022-07-13 11:46:33,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 11:46:33,231 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 0 states have call successors, (0), 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 277 [2022-07-13 11:46:33,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:33,684 INFO L225 Difference]: With dead ends: 342959 [2022-07-13 11:46:33,684 INFO L226 Difference]: Without dead ends: 237084 [2022-07-13 11:46:33,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 558 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-07-13 11:46:33,768 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 2620 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 3890 mSolverCounterSat, 788 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2620 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 4678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 788 IncrementalHoareTripleChecker+Valid, 3890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:33,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2620 Valid, 428 Invalid, 4678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [788 Valid, 3890 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-13 11:46:33,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237084 states. [2022-07-13 11:46:36,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237084 to 215611. [2022-07-13 11:46:36,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215611 states, 215610 states have (on average 1.120448958768146) internal successors, (241580), 215610 states have internal predecessors, (241580), 0 states have call successors, (0), 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 11:46:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215611 states to 215611 states and 241580 transitions. [2022-07-13 11:46:37,730 INFO L78 Accepts]: Start accepts. Automaton has 215611 states and 241580 transitions. Word has length 277 [2022-07-13 11:46:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:37,731 INFO L495 AbstractCegarLoop]: Abstraction has 215611 states and 241580 transitions. [2022-07-13 11:46:37,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 49.833333333333336) internal successors, (299), 6 states have internal predecessors, (299), 0 states have call successors, (0), 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 11:46:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 215611 states and 241580 transitions. [2022-07-13 11:46:37,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-07-13 11:46:37,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:37,821 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 9, 9, 8, 8, 7, 7, 7, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:37,839 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-13 11:46:38,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:38,023 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:38,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:38,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1821906762, now seen corresponding path program 1 times [2022-07-13 11:46:38,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:38,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519278553] [2022-07-13 11:46:38,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:38,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:38,114 INFO L134 CoverageAnalysis]: Checked inductivity of 593 backedges. 182 proven. 0 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2022-07-13 11:46:38,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:38,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519278553] [2022-07-13 11:46:38,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519278553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:38,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:38,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:38,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264352901] [2022-07-13 11:46:38,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:38,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:46:38,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:38,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:46:38,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:46:38,117 INFO L87 Difference]: Start difference. First operand 215611 states and 241580 transitions. Second operand has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 11:46:39,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:39,972 INFO L93 Difference]: Finished difference Result 306710 states and 343950 transitions. [2022-07-13 11:46:39,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:46:39,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 319 [2022-07-13 11:46:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:40,112 INFO L225 Difference]: With dead ends: 306710 [2022-07-13 11:46:40,113 INFO L226 Difference]: Without dead ends: 84806 [2022-07-13 11:46:40,203 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:46:40,204 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 457 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:40,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 51 Invalid, 999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 11:46:40,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84806 states. [2022-07-13 11:46:41,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84806 to 75031. [2022-07-13 11:46:41,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75031 states, 75030 states have (on average 1.073863787818206) internal successors, (80572), 75030 states have internal predecessors, (80572), 0 states have call successors, (0), 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 11:46:41,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75031 states to 75031 states and 80572 transitions. [2022-07-13 11:46:41,308 INFO L78 Accepts]: Start accepts. Automaton has 75031 states and 80572 transitions. Word has length 319 [2022-07-13 11:46:41,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:41,308 INFO L495 AbstractCegarLoop]: Abstraction has 75031 states and 80572 transitions. [2022-07-13 11:46:41,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 44.0) internal successors, (176), 3 states have internal predecessors, (176), 0 states have call successors, (0), 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 11:46:41,309 INFO L276 IsEmpty]: Start isEmpty. Operand 75031 states and 80572 transitions. [2022-07-13 11:46:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2022-07-13 11:46:41,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:41,345 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:41,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 11:46:41,345 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:41,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:41,346 INFO L85 PathProgramCache]: Analyzing trace with hash -1650139671, now seen corresponding path program 1 times [2022-07-13 11:46:41,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:41,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342742712] [2022-07-13 11:46:41,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:41,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:41,714 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 221 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:41,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:41,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342742712] [2022-07-13 11:46:41,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342742712] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:46:41,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519811076] [2022-07-13 11:46:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:41,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:41,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:41,717 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 11:46:41,718 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 11:46:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:41,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 545 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 11:46:41,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:46:41,988 INFO L134 CoverageAnalysis]: Checked inductivity of 264 backedges. 264 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 11:46:41,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:46:41,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519811076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:41,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:46:41,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2022-07-13 11:46:41,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433301626] [2022-07-13 11:46:41,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:41,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:41,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:41,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:41,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:46:41,992 INFO L87 Difference]: Start difference. First operand 75031 states and 80572 transitions. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 11:46:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:43,100 INFO L93 Difference]: Finished difference Result 148444 states and 159472 transitions. [2022-07-13 11:46:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:43,101 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 329 [2022-07-13 11:46:43,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:43,201 INFO L225 Difference]: With dead ends: 148444 [2022-07-13 11:46:43,201 INFO L226 Difference]: Without dead ends: 74024 [2022-07-13 11:46:43,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-13 11:46:43,247 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 177 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:43,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 263 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:43,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74024 states. [2022-07-13 11:46:44,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74024 to 73202. [2022-07-13 11:46:44,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73202 states, 73201 states have (on average 1.0697531454488327) internal successors, (78307), 73201 states have internal predecessors, (78307), 0 states have call successors, (0), 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 11:46:44,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73202 states to 73202 states and 78307 transitions. [2022-07-13 11:46:44,383 INFO L78 Accepts]: Start accepts. Automaton has 73202 states and 78307 transitions. Word has length 329 [2022-07-13 11:46:44,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:44,383 INFO L495 AbstractCegarLoop]: Abstraction has 73202 states and 78307 transitions. [2022-07-13 11:46:44,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 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 11:46:44,384 INFO L276 IsEmpty]: Start isEmpty. Operand 73202 states and 78307 transitions. [2022-07-13 11:46:44,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2022-07-13 11:46:44,420 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:44,421 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:44,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 11:46:44,622 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,SelfDestructingSolverStorable15 [2022-07-13 11:46:44,622 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:44,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:44,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1562500494, now seen corresponding path program 1 times [2022-07-13 11:46:44,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:44,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002955476] [2022-07-13 11:46:44,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:44,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:44,754 INFO L134 CoverageAnalysis]: Checked inductivity of 283 backedges. 198 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 11:46:44,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:44,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002955476] [2022-07-13 11:46:44,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002955476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:44,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:44,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:44,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392035968] [2022-07-13 11:46:44,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:44,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:44,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:44,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:44,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:44,757 INFO L87 Difference]: Start difference. First operand 73202 states and 78307 transitions. Second operand has 3 states, 3 states have (on average 88.0) internal successors, (264), 2 states have internal predecessors, (264), 0 states have call successors, (0), 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 11:46:46,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:46,009 INFO L93 Difference]: Finished difference Result 172862 states and 184953 transitions. [2022-07-13 11:46:46,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:46,009 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 2 states have internal predecessors, (264), 0 states have call successors, (0), 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 348 [2022-07-13 11:46:46,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:46,145 INFO L225 Difference]: With dead ends: 172862 [2022-07-13 11:46:46,146 INFO L226 Difference]: Without dead ends: 100271 [2022-07-13 11:46:46,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:46,177 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 114 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:46,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 76 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:46:46,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100271 states. [2022-07-13 11:46:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100271 to 97831. [2022-07-13 11:46:47,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97831 states, 97830 states have (on average 1.0708473883266891) internal successors, (104761), 97830 states have internal predecessors, (104761), 0 states have call successors, (0), 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 11:46:47,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97831 states to 97831 states and 104761 transitions. [2022-07-13 11:46:47,498 INFO L78 Accepts]: Start accepts. Automaton has 97831 states and 104761 transitions. Word has length 348 [2022-07-13 11:46:47,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:47,498 INFO L495 AbstractCegarLoop]: Abstraction has 97831 states and 104761 transitions. [2022-07-13 11:46:47,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 88.0) internal successors, (264), 2 states have internal predecessors, (264), 0 states have call successors, (0), 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 11:46:47,498 INFO L276 IsEmpty]: Start isEmpty. Operand 97831 states and 104761 transitions. [2022-07-13 11:46:47,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2022-07-13 11:46:47,555 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:47,556 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:47,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 11:46:47,556 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:47,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:47,557 INFO L85 PathProgramCache]: Analyzing trace with hash 295932573, now seen corresponding path program 1 times [2022-07-13 11:46:47,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:47,557 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592611392] [2022-07-13 11:46:47,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:47,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:47,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 212 proven. 6 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 11:46:47,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:47,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592611392] [2022-07-13 11:46:47,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592611392] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 11:46:47,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064844268] [2022-07-13 11:46:47,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:47,710 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 11:46:47,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 11:46:47,712 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 11:46:47,720 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 11:46:47,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:47,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 609 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-13 11:46:47,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 11:46:48,280 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 11:46:48,281 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 11:46:48,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064844268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:48,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 11:46:48,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2022-07-13 11:46:48,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615319922] [2022-07-13 11:46:48,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:48,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:46:48,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:48,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:46:48,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 11:46:48,283 INFO L87 Difference]: Start difference. First operand 97831 states and 104761 transitions. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 11:46:49,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:49,900 INFO L93 Difference]: Finished difference Result 227624 states and 243951 transitions. [2022-07-13 11:46:49,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:46:49,900 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 355 [2022-07-13 11:46:49,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:50,081 INFO L225 Difference]: With dead ends: 227624 [2022-07-13 11:46:50,081 INFO L226 Difference]: Without dead ends: 130404 [2022-07-13 11:46:50,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 357 GetRequests, 354 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 11:46:50,158 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 600 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:50,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 278 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 11:46:50,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130404 states. [2022-07-13 11:46:51,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130404 to 120190. [2022-07-13 11:46:52,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120190 states, 120189 states have (on average 1.0682341978051235) internal successors, (128390), 120189 states have internal predecessors, (128390), 0 states have call successors, (0), 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 11:46:52,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120190 states to 120190 states and 128390 transitions. [2022-07-13 11:46:52,217 INFO L78 Accepts]: Start accepts. Automaton has 120190 states and 128390 transitions. Word has length 355 [2022-07-13 11:46:52,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:52,218 INFO L495 AbstractCegarLoop]: Abstraction has 120190 states and 128390 transitions. [2022-07-13 11:46:52,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 3 states have internal predecessors, (271), 0 states have call successors, (0), 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 11:46:52,218 INFO L276 IsEmpty]: Start isEmpty. Operand 120190 states and 128390 transitions. [2022-07-13 11:46:52,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2022-07-13 11:46:52,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:52,259 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 11:46:52,279 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 11:46:52,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 11:46:52,466 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:52,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:52,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1974885860, now seen corresponding path program 1 times [2022-07-13 11:46:52,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:52,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727974147] [2022-07-13 11:46:52,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:52,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:52,635 INFO L134 CoverageAnalysis]: Checked inductivity of 307 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-13 11:46:52,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:52,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727974147] [2022-07-13 11:46:52,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727974147] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:52,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:52,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:46:52,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468126621] [2022-07-13 11:46:52,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:52,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:46:52,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:52,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:46:52,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:52,639 INFO L87 Difference]: Start difference. First operand 120190 states and 128390 transitions. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 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 11:46:54,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:54,021 INFO L93 Difference]: Finished difference Result 239770 states and 256150 transitions. [2022-07-13 11:46:54,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:46:54,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 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 372 [2022-07-13 11:46:54,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:54,184 INFO L225 Difference]: With dead ends: 239770 [2022-07-13 11:46:54,184 INFO L226 Difference]: Without dead ends: 120191 [2022-07-13 11:46:54,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:46:54,221 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 70 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 119 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:54,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 119 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-13 11:46:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120191 states. [2022-07-13 11:46:55,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120191 to 120190. [2022-07-13 11:46:55,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120190 states, 120189 states have (on average 1.0682092371182055) internal successors, (128387), 120189 states have internal predecessors, (128387), 0 states have call successors, (0), 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 11:46:56,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120190 states to 120190 states and 128387 transitions. [2022-07-13 11:46:56,049 INFO L78 Accepts]: Start accepts. Automaton has 120190 states and 128387 transitions. Word has length 372 [2022-07-13 11:46:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:46:56,049 INFO L495 AbstractCegarLoop]: Abstraction has 120190 states and 128387 transitions. [2022-07-13 11:46:56,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 2 states have internal predecessors, (288), 0 states have call successors, (0), 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 11:46:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 120190 states and 128387 transitions. [2022-07-13 11:46:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2022-07-13 11:46:56,099 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:46:56,099 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:46:56,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 11:46:56,100 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:46:56,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:46:56,100 INFO L85 PathProgramCache]: Analyzing trace with hash -682424990, now seen corresponding path program 1 times [2022-07-13 11:46:56,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:46:56,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759255701] [2022-07-13 11:46:56,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:46:56,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:46:56,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:46:56,673 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 239 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-13 11:46:56,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:46:56,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759255701] [2022-07-13 11:46:56,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759255701] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:46:56,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:46:56,675 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 11:46:56,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857906851] [2022-07-13 11:46:56,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:46:56,676 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 11:46:56,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:46:56,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 11:46:56,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:46:56,677 INFO L87 Difference]: Start difference. First operand 120190 states and 128387 transitions. Second operand has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 11:46:58,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:46:58,001 INFO L93 Difference]: Finished difference Result 247347 states and 264782 transitions. [2022-07-13 11:46:58,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 11:46:58,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 378 [2022-07-13 11:46:58,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:46:58,173 INFO L225 Difference]: With dead ends: 247347 [2022-07-13 11:46:58,173 INFO L226 Difference]: Without dead ends: 124926 [2022-07-13 11:46:58,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 11:46:58,243 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 350 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 981 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 350 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 11:46:58,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [350 Valid, 80 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 981 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 11:46:58,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124926 states. [2022-07-13 11:46:59,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124926 to 99030. [2022-07-13 11:47:00,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99030 states, 99029 states have (on average 1.0679598905371155) internal successors, (105759), 99029 states have internal predecessors, (105759), 0 states have call successors, (0), 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 11:47:00,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99030 states to 99030 states and 105759 transitions. [2022-07-13 11:47:00,164 INFO L78 Accepts]: Start accepts. Automaton has 99030 states and 105759 transitions. Word has length 378 [2022-07-13 11:47:00,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 11:47:00,164 INFO L495 AbstractCegarLoop]: Abstraction has 99030 states and 105759 transitions. [2022-07-13 11:47:00,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 63.25) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 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 11:47:00,165 INFO L276 IsEmpty]: Start isEmpty. Operand 99030 states and 105759 transitions. [2022-07-13 11:47:00,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2022-07-13 11:47:00,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 11:47:00,194 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 11:47:00,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 11:47:00,194 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 11:47:00,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 11:47:00,195 INFO L85 PathProgramCache]: Analyzing trace with hash -300253357, now seen corresponding path program 1 times [2022-07-13 11:47:00,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 11:47:00,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751664900] [2022-07-13 11:47:00,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 11:47:00,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 11:47:00,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 11:47:00,321 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 309 trivial. 0 not checked. [2022-07-13 11:47:00,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 11:47:00,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751664900] [2022-07-13 11:47:00,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751664900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 11:47:00,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 11:47:00,322 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 11:47:00,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280943108] [2022-07-13 11:47:00,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 11:47:00,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 11:47:00,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 11:47:00,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 11:47:00,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:47:00,324 INFO L87 Difference]: Start difference. First operand 99030 states and 105759 transitions. Second operand has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 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 11:47:01,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 11:47:01,242 INFO L93 Difference]: Finished difference Result 202532 states and 216141 transitions. [2022-07-13 11:47:01,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 11:47:01,243 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.333333333333336) internal successors, (184), 2 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 406 [2022-07-13 11:47:01,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 11:47:01,379 INFO L225 Difference]: With dead ends: 202532 [2022-07-13 11:47:01,379 INFO L226 Difference]: Without dead ends: 104113 [2022-07-13 11:47:01,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 11:47:01,440 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 181 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 117 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 11:47:01,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [181 Valid, 117 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 11:47:01,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104113 states.