./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.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 a66c471884095e28475dea267af4dc4d2e968c34cd7e27899ae6a5f02624299e --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 05:38:33,890 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 05:38:33,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 05:38:33,926 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 05:38:33,927 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 05:38:33,929 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 05:38:33,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 05:38:33,938 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 05:38:33,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 05:38:33,945 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 05:38:33,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 05:38:33,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 05:38:33,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 05:38:33,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 05:38:33,954 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 05:38:33,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 05:38:33,956 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 05:38:33,956 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 05:38:33,958 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 05:38:33,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 05:38:33,965 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 05:38:33,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 05:38:33,966 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 05:38:33,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 05:38:33,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 05:38:33,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 05:38:33,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 05:38:33,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 05:38:33,972 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 05:38:33,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 05:38:33,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 05:38:33,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 05:38:33,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 05:38:33,975 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 05:38:33,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 05:38:33,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 05:38:33,978 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 05:38:33,978 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 05:38:33,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 05:38:33,979 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 05:38:33,980 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 05:38:33,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 05:38:33,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 05:38:34,028 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 05:38:34,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 05:38:34,029 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 05:38:34,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 05:38:34,030 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 05:38:34,030 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 05:38:34,031 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 05:38:34,031 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 05:38:34,031 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 05:38:34,032 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 05:38:34,032 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 05:38:34,033 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 05:38:34,033 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 05:38:34,033 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 05:38:34,033 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 05:38:34,033 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 05:38:34,034 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 05:38:34,034 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 05:38:34,034 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 05:38:34,034 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 05:38:34,034 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 05:38:34,035 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 05:38:34,035 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 05:38:34,035 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 05:38:34,035 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:38:34,036 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 05:38:34,036 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 05:38:34,036 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 05:38:34,036 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 05:38:34,036 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 05:38:34,037 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 05:38:34,037 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 05:38:34,037 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 05:38:34,037 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a66c471884095e28475dea267af4dc4d2e968c34cd7e27899ae6a5f02624299e [2022-07-21 05:38:34,352 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 05:38:34,379 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 05:38:34,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 05:38:34,384 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 05:38:34,385 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 05:38:34,387 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-07-21 05:38:34,459 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17b7e9554/1ff5058f7bfe403ba92030df8f9b2c54/FLAG63aec74e5 [2022-07-21 05:38:35,085 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 05:38:35,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-07-21 05:38:35,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17b7e9554/1ff5058f7bfe403ba92030df8f9b2c54/FLAG63aec74e5 [2022-07-21 05:38:35,327 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/17b7e9554/1ff5058f7bfe403ba92030df8f9b2c54 [2022-07-21 05:38:35,330 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 05:38:35,331 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 05:38:35,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 05:38:35,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 05:38:35,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 05:38:35,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:38:35" (1/1) ... [2022-07-21 05:38:35,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48591878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:38:35, skipping insertion in model container [2022-07-21 05:38:35,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:38:35" (1/1) ... [2022-07-21 05:38:35,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 05:38:35,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 05:38:35,861 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/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[31375,31388] [2022-07-21 05:38:36,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:38:36,073 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 05:38:36,296 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/seq-mthreaded-reduced/pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[31375,31388] [2022-07-21 05:38:36,403 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 05:38:36,419 INFO L208 MainTranslator]: Completed translation [2022-07-21 05:38:36,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:38:36 WrapperNode [2022-07-21 05:38:36,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 05:38:36,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 05:38:36,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 05:38:36,422 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 05:38:36,427 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:38:36" (1/1) ... [2022-07-21 05:38:36,455 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:38:36" (1/1) ... [2022-07-21 05:38:36,531 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2655 [2022-07-21 05:38:36,532 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 05:38:36,533 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 05:38:36,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 05:38:36,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 05:38:36,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:38:36" (1/1) ... [2022-07-21 05:38:36,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:38:36" (1/1) ... [2022-07-21 05:38:36,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:38:36" (1/1) ... [2022-07-21 05:38:36,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:38:36" (1/1) ... [2022-07-21 05:38:36,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:38:36" (1/1) ... [2022-07-21 05:38:36,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:38:36" (1/1) ... [2022-07-21 05:38:36,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:38:36" (1/1) ... [2022-07-21 05:38:36,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 05:38:36,614 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 05:38:36,614 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 05:38:36,614 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 05:38:36,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:38:36" (1/1) ... [2022-07-21 05:38:36,655 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 05:38:36,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 05:38:36,701 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) [2022-07-21 05:38:36,729 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 [2022-07-21 05:38:36,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 05:38:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 05:38:36,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 05:38:36,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 05:38:36,908 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 05:38:36,909 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 05:38:38,578 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 05:38:38,590 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 05:38:38,590 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 05:38:38,592 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:38:38 BoogieIcfgContainer [2022-07-21 05:38:38,592 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 05:38:38,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 05:38:38,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 05:38:38,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 05:38:38,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:38:35" (1/3) ... [2022-07-21 05:38:38,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a196c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:38:38, skipping insertion in model container [2022-07-21 05:38:38,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:38:36" (2/3) ... [2022-07-21 05:38:38,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a196c85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:38:38, skipping insertion in model container [2022-07-21 05:38:38,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:38:38" (3/3) ... [2022-07-21 05:38:38,600 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-07-21 05:38:38,612 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 05:38:38,612 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 05:38:38,682 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 05:38:38,690 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@5f575254, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f61b2cb [2022-07-21 05:38:38,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 05:38:38,700 INFO L276 IsEmpty]: Start isEmpty. Operand has 703 states, 701 states have (on average 1.7931526390870185) internal successors, (1257), 702 states have internal predecessors, (1257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:38,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-21 05:38:38,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:38:38,738 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:38:38,739 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:38:38,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:38:38,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1147450978, now seen corresponding path program 1 times [2022-07-21 05:38:38,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:38:38,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549392840] [2022-07-21 05:38:38,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:38:38,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:38:39,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:38:39,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:38:39,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:38:39,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549392840] [2022-07-21 05:38:39,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549392840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:38:39,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:38:39,436 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:38:39,437 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111160501] [2022-07-21 05:38:39,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:38:39,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:38:39,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:38:39,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:38:39,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:38:39,475 INFO L87 Difference]: Start difference. First operand has 703 states, 701 states have (on average 1.7931526390870185) internal successors, (1257), 702 states have internal predecessors, (1257), 0 states have call successors, (0), 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 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:39,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:38:39,759 INFO L93 Difference]: Finished difference Result 1303 states and 2316 transitions. [2022-07-21 05:38:39,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:38:39,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 300 [2022-07-21 05:38:39,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:38:39,796 INFO L225 Difference]: With dead ends: 1303 [2022-07-21 05:38:39,799 INFO L226 Difference]: Without dead ends: 1122 [2022-07-21 05:38:39,804 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 [2022-07-21 05:38:39,808 INFO L413 NwaCegarLoop]: 1205 mSDtfsCounter, 727 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 2223 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:38:39,809 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 2223 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:38:39,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-07-21 05:38:39,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1120. [2022-07-21 05:38:39,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1120 states, 1119 states have (on average 1.5558534405719393) internal successors, (1741), 1119 states have internal predecessors, (1741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:39,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1120 states to 1120 states and 1741 transitions. [2022-07-21 05:38:39,970 INFO L78 Accepts]: Start accepts. Automaton has 1120 states and 1741 transitions. Word has length 300 [2022-07-21 05:38:39,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:38:39,971 INFO L495 AbstractCegarLoop]: Abstraction has 1120 states and 1741 transitions. [2022-07-21 05:38:39,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:39,971 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states and 1741 transitions. [2022-07-21 05:38:39,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-21 05:38:39,975 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:38:39,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:38:39,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 05:38:39,976 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:38:39,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:38:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash -273904988, now seen corresponding path program 1 times [2022-07-21 05:38:39,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:38:39,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093625695] [2022-07-21 05:38:39,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:38:39,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:38:40,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:38:40,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:38:40,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:38:40,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093625695] [2022-07-21 05:38:40,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093625695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:38:40,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:38:40,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:38:40,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863165547] [2022-07-21 05:38:40,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:38:40,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:38:40,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:38:40,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:38:40,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:38:40,234 INFO L87 Difference]: Start difference. First operand 1120 states and 1741 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:40,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:38:40,420 INFO L93 Difference]: Finished difference Result 2232 states and 3496 transitions. [2022-07-21 05:38:40,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:38:40,421 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 300 [2022-07-21 05:38:40,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:38:40,431 INFO L225 Difference]: With dead ends: 2232 [2022-07-21 05:38:40,432 INFO L226 Difference]: Without dead ends: 1930 [2022-07-21 05:38:40,438 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 [2022-07-21 05:38:40,440 INFO L413 NwaCegarLoop]: 1028 mSDtfsCounter, 574 mSDsluCounter, 861 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 1889 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:38:40,441 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [574 Valid, 1889 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:38:40,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1930 states. [2022-07-21 05:38:40,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1930 to 1928. [2022-07-21 05:38:40,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1928 states, 1927 states have (on average 1.5490399584846912) internal successors, (2985), 1927 states have internal predecessors, (2985), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:40,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1928 states to 1928 states and 2985 transitions. [2022-07-21 05:38:40,559 INFO L78 Accepts]: Start accepts. Automaton has 1928 states and 2985 transitions. Word has length 300 [2022-07-21 05:38:40,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:38:40,561 INFO L495 AbstractCegarLoop]: Abstraction has 1928 states and 2985 transitions. [2022-07-21 05:38:40,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:40,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1928 states and 2985 transitions. [2022-07-21 05:38:40,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-21 05:38:40,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:38:40,570 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:38:40,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 05:38:40,572 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:38:40,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:38:40,579 INFO L85 PathProgramCache]: Analyzing trace with hash -852042622, now seen corresponding path program 1 times [2022-07-21 05:38:40,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:38:40,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411857360] [2022-07-21 05:38:40,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:38:40,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:38:40,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:38:40,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:38:40,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:38:40,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411857360] [2022-07-21 05:38:40,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411857360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:38:40,786 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:38:40,786 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:38:40,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695918850] [2022-07-21 05:38:40,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:38:40,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:38:40,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:38:40,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:38:40,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:38:40,789 INFO L87 Difference]: Start difference. First operand 1928 states and 2985 transitions. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:41,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:38:41,078 INFO L93 Difference]: Finished difference Result 4076 states and 6363 transitions. [2022-07-21 05:38:41,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:38:41,079 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 300 [2022-07-21 05:38:41,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:38:41,093 INFO L225 Difference]: With dead ends: 4076 [2022-07-21 05:38:41,093 INFO L226 Difference]: Without dead ends: 3514 [2022-07-21 05:38:41,095 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 [2022-07-21 05:38:41,096 INFO L413 NwaCegarLoop]: 1028 mSDtfsCounter, 567 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:38:41,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 1876 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:38:41,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2022-07-21 05:38:41,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 3512. [2022-07-21 05:38:41,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3512 states, 3511 states have (on average 1.541726003987468) internal successors, (5413), 3511 states have internal predecessors, (5413), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:41,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3512 states to 3512 states and 5413 transitions. [2022-07-21 05:38:41,252 INFO L78 Accepts]: Start accepts. Automaton has 3512 states and 5413 transitions. Word has length 300 [2022-07-21 05:38:41,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:38:41,253 INFO L495 AbstractCegarLoop]: Abstraction has 3512 states and 5413 transitions. [2022-07-21 05:38:41,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:41,254 INFO L276 IsEmpty]: Start isEmpty. Operand 3512 states and 5413 transitions. [2022-07-21 05:38:41,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-07-21 05:38:41,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:38:41,262 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:38:41,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 05:38:41,263 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:38:41,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:38:41,264 INFO L85 PathProgramCache]: Analyzing trace with hash -1348510954, now seen corresponding path program 1 times [2022-07-21 05:38:41,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:38:41,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548317368] [2022-07-21 05:38:41,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:38:41,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:38:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:38:41,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:38:41,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:38:41,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548317368] [2022-07-21 05:38:41,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548317368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:38:41,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:38:41,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 05:38:41,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448820258] [2022-07-21 05:38:41,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:38:41,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 05:38:41,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:38:41,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 05:38:41,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 05:38:41,643 INFO L87 Difference]: Start difference. First operand 3512 states and 5413 transitions. Second operand has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:42,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:38:42,196 INFO L93 Difference]: Finished difference Result 10422 states and 16050 transitions. [2022-07-21 05:38:42,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:38:42,197 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 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 300 [2022-07-21 05:38:42,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:38:42,227 INFO L225 Difference]: With dead ends: 10422 [2022-07-21 05:38:42,228 INFO L226 Difference]: Without dead ends: 6921 [2022-07-21 05:38:42,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:38:42,236 INFO L413 NwaCegarLoop]: 1800 mSDtfsCounter, 2345 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2345 SdHoareTripleChecker+Valid, 2830 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:38:42,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2345 Valid, 2830 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:38:42,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6921 states. [2022-07-21 05:38:42,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6921 to 6919. [2022-07-21 05:38:42,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6919 states, 6918 states have (on average 1.533102052616363) internal successors, (10606), 6918 states have internal predecessors, (10606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:42,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6919 states to 6919 states and 10606 transitions. [2022-07-21 05:38:42,678 INFO L78 Accepts]: Start accepts. Automaton has 6919 states and 10606 transitions. Word has length 300 [2022-07-21 05:38:42,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:38:42,679 INFO L495 AbstractCegarLoop]: Abstraction has 6919 states and 10606 transitions. [2022-07-21 05:38:42,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.0) internal successors, (300), 4 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:42,679 INFO L276 IsEmpty]: Start isEmpty. Operand 6919 states and 10606 transitions. [2022-07-21 05:38:42,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-07-21 05:38:42,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:38:42,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:38:42,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 05:38:42,694 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:38:42,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:38:42,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1699563604, now seen corresponding path program 1 times [2022-07-21 05:38:42,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:38:42,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104462459] [2022-07-21 05:38:42,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:38:42,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:38:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:38:42,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:38:42,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:38:42,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104462459] [2022-07-21 05:38:42,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104462459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:38:42,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:38:42,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:38:42,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657074128] [2022-07-21 05:38:42,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:38:42,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:38:42,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:38:42,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:38:42,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:38:42,792 INFO L87 Difference]: Start difference. First operand 6919 states and 10606 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:43,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:38:43,705 INFO L93 Difference]: Finished difference Result 20370 states and 31174 transitions. [2022-07-21 05:38:43,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:38:43,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 302 [2022-07-21 05:38:43,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:38:43,767 INFO L225 Difference]: With dead ends: 20370 [2022-07-21 05:38:43,767 INFO L226 Difference]: Without dead ends: 13576 [2022-07-21 05:38:43,779 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 [2022-07-21 05:38:43,781 INFO L413 NwaCegarLoop]: 2052 mSDtfsCounter, 951 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 951 SdHoareTripleChecker+Valid, 3084 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:38:43,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [951 Valid, 3084 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:38:43,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13576 states. [2022-07-21 05:38:44,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13576 to 13574. [2022-07-21 05:38:44,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13574 states, 13573 states have (on average 1.5238340823694099) internal successors, (20683), 13573 states have internal predecessors, (20683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13574 states to 13574 states and 20683 transitions. [2022-07-21 05:38:44,758 INFO L78 Accepts]: Start accepts. Automaton has 13574 states and 20683 transitions. Word has length 302 [2022-07-21 05:38:44,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:38:44,760 INFO L495 AbstractCegarLoop]: Abstraction has 13574 states and 20683 transitions. [2022-07-21 05:38:44,764 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:44,764 INFO L276 IsEmpty]: Start isEmpty. Operand 13574 states and 20683 transitions. [2022-07-21 05:38:44,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2022-07-21 05:38:44,788 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:38:44,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:38:44,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 05:38:44,789 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:38:44,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:38:44,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1759066023, now seen corresponding path program 1 times [2022-07-21 05:38:44,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:38:44,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630811118] [2022-07-21 05:38:44,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:38:44,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:38:44,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:38:44,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:38:44,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:38:44,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630811118] [2022-07-21 05:38:44,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630811118] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:38:44,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:38:44,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:38:44,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786634773] [2022-07-21 05:38:44,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:38:44,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:38:44,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:38:44,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:38:44,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:38:44,860 INFO L87 Difference]: Start difference. First operand 13574 states and 20683 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:46,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:38:46,485 INFO L93 Difference]: Finished difference Result 40655 states and 61933 transitions. [2022-07-21 05:38:46,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:38:46,486 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 302 [2022-07-21 05:38:46,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:38:46,562 INFO L225 Difference]: With dead ends: 40655 [2022-07-21 05:38:46,562 INFO L226 Difference]: Without dead ends: 27119 [2022-07-21 05:38:46,597 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 [2022-07-21 05:38:46,600 INFO L413 NwaCegarLoop]: 2154 mSDtfsCounter, 1074 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:38:46,602 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 3229 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:38:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27119 states. [2022-07-21 05:38:47,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27119 to 13593. [2022-07-21 05:38:47,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13593 states, 13592 states have (on average 1.5237639788110653) internal successors, (20711), 13592 states have internal predecessors, (20711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:47,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13593 states to 13593 states and 20711 transitions. [2022-07-21 05:38:47,881 INFO L78 Accepts]: Start accepts. Automaton has 13593 states and 20711 transitions. Word has length 302 [2022-07-21 05:38:47,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:38:47,882 INFO L495 AbstractCegarLoop]: Abstraction has 13593 states and 20711 transitions. [2022-07-21 05:38:47,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:47,882 INFO L276 IsEmpty]: Start isEmpty. Operand 13593 states and 20711 transitions. [2022-07-21 05:38:47,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2022-07-21 05:38:47,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:38:47,906 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:38:47,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 05:38:47,907 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:38:47,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:38:47,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1114402342, now seen corresponding path program 1 times [2022-07-21 05:38:47,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:38:47,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676723372] [2022-07-21 05:38:47,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:38:47,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:38:47,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:38:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:38:47,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:38:47,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676723372] [2022-07-21 05:38:47,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676723372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:38:47,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:38:47,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:38:47,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953848577] [2022-07-21 05:38:47,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:38:47,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:38:47,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:38:47,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:38:47,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:38:47,967 INFO L87 Difference]: Start difference. First operand 13593 states and 20711 transitions. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:49,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:38:49,679 INFO L93 Difference]: Finished difference Result 40674 states and 61954 transitions. [2022-07-21 05:38:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:38:49,680 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 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 303 [2022-07-21 05:38:49,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:38:49,753 INFO L225 Difference]: With dead ends: 40674 [2022-07-21 05:38:49,753 INFO L226 Difference]: Without dead ends: 27137 [2022-07-21 05:38:49,783 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 [2022-07-21 05:38:49,787 INFO L413 NwaCegarLoop]: 2154 mSDtfsCounter, 1069 mSDsluCounter, 1075 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1069 SdHoareTripleChecker+Valid, 3229 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:38:49,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1069 Valid, 3229 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:38:49,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27137 states. [2022-07-21 05:38:50,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27137 to 13611. [2022-07-21 05:38:50,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13611 states, 13610 states have (on average 1.5232916972814108) internal successors, (20732), 13610 states have internal predecessors, (20732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:51,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13611 states to 13611 states and 20732 transitions. [2022-07-21 05:38:51,024 INFO L78 Accepts]: Start accepts. Automaton has 13611 states and 20732 transitions. Word has length 303 [2022-07-21 05:38:51,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:38:51,024 INFO L495 AbstractCegarLoop]: Abstraction has 13611 states and 20732 transitions. [2022-07-21 05:38:51,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 13611 states and 20732 transitions. [2022-07-21 05:38:51,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-07-21 05:38:51,052 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:38:51,053 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:38:51,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 05:38:51,053 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:38:51,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:38:51,054 INFO L85 PathProgramCache]: Analyzing trace with hash -1692908177, now seen corresponding path program 1 times [2022-07-21 05:38:51,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:38:51,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294235076] [2022-07-21 05:38:51,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:38:51,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:38:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:38:51,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:38:51,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:38:51,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294235076] [2022-07-21 05:38:51,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294235076] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:38:51,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:38:51,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:38:51,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403253329] [2022-07-21 05:38:51,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:38:51,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:38:51,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:38:51,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:38:51,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:38:51,167 INFO L87 Difference]: Start difference. First operand 13611 states and 20732 transitions. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:52,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:38:52,738 INFO L93 Difference]: Finished difference Result 39974 states and 60781 transitions. [2022-07-21 05:38:52,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:38:52,738 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2022-07-21 05:38:52,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:38:52,816 INFO L225 Difference]: With dead ends: 39974 [2022-07-21 05:38:52,816 INFO L226 Difference]: Without dead ends: 26604 [2022-07-21 05:38:52,850 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 [2022-07-21 05:38:52,851 INFO L413 NwaCegarLoop]: 2114 mSDtfsCounter, 944 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 3146 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 05:38:52,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 3146 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 05:38:52,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26604 states. [2022-07-21 05:38:54,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26604 to 26602. [2022-07-21 05:38:54,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26602 states, 26601 states have (on average 1.5130258260967633) internal successors, (40248), 26601 states have internal predecessors, (40248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:54,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26602 states to 26602 states and 40248 transitions. [2022-07-21 05:38:54,474 INFO L78 Accepts]: Start accepts. Automaton has 26602 states and 40248 transitions. Word has length 304 [2022-07-21 05:38:54,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:38:54,475 INFO L495 AbstractCegarLoop]: Abstraction has 26602 states and 40248 transitions. [2022-07-21 05:38:54,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:54,475 INFO L276 IsEmpty]: Start isEmpty. Operand 26602 states and 40248 transitions. [2022-07-21 05:38:54,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-07-21 05:38:54,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:38:54,514 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:38:54,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 05:38:54,515 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:38:54,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:38:54,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1965180108, now seen corresponding path program 1 times [2022-07-21 05:38:54,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:38:54,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712117935] [2022-07-21 05:38:54,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:38:54,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:38:54,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:38:54,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:38:54,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:38:54,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712117935] [2022-07-21 05:38:54,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712117935] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:38:54,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:38:54,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 05:38:54,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113423101] [2022-07-21 05:38:54,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:38:54,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 05:38:54,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:38:54,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 05:38:54,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:38:54,857 INFO L87 Difference]: Start difference. First operand 26602 states and 40248 transitions. Second operand has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:38:58,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:38:58,436 INFO L93 Difference]: Finished difference Result 78700 states and 118913 transitions. [2022-07-21 05:38:58,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 05:38:58,437 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 304 [2022-07-21 05:38:58,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:38:58,581 INFO L225 Difference]: With dead ends: 78700 [2022-07-21 05:38:58,581 INFO L226 Difference]: Without dead ends: 52153 [2022-07-21 05:38:58,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 05:38:58,630 INFO L413 NwaCegarLoop]: 1744 mSDtfsCounter, 3061 mSDsluCounter, 1030 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3061 SdHoareTripleChecker+Valid, 2774 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:38:58,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3061 Valid, 2774 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:38:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52153 states. [2022-07-21 05:39:02,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52153 to 52151. [2022-07-21 05:39:02,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52151 states, 52150 states have (on average 1.5027612655800575) internal successors, (78369), 52150 states have internal predecessors, (78369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:02,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52151 states to 52151 states and 78369 transitions. [2022-07-21 05:39:02,338 INFO L78 Accepts]: Start accepts. Automaton has 52151 states and 78369 transitions. Word has length 304 [2022-07-21 05:39:02,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 05:39:02,339 INFO L495 AbstractCegarLoop]: Abstraction has 52151 states and 78369 transitions. [2022-07-21 05:39:02,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 60.8) internal successors, (304), 5 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:02,339 INFO L276 IsEmpty]: Start isEmpty. Operand 52151 states and 78369 transitions. [2022-07-21 05:39:02,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-21 05:39:02,403 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 05:39:02,403 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 05:39:02,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 05:39:02,403 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 05:39:02,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 05:39:02,404 INFO L85 PathProgramCache]: Analyzing trace with hash 826900730, now seen corresponding path program 1 times [2022-07-21 05:39:02,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 05:39:02,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11622206] [2022-07-21 05:39:02,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 05:39:02,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 05:39:02,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 05:39:02,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 05:39:02,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 05:39:02,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11622206] [2022-07-21 05:39:02,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11622206] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 05:39:02,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 05:39:02,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 05:39:02,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184068192] [2022-07-21 05:39:02,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 05:39:02,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 05:39:02,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 05:39:02,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 05:39:02,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 05:39:02,499 INFO L87 Difference]: Start difference. First operand 52151 states and 78369 transitions. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 05:39:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 05:39:08,573 INFO L93 Difference]: Finished difference Result 153737 states and 230682 transitions. [2022-07-21 05:39:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 05:39:08,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 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 306 [2022-07-21 05:39:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 05:39:08,964 INFO L225 Difference]: With dead ends: 153737 [2022-07-21 05:39:08,964 INFO L226 Difference]: Without dead ends: 102103 [2022-07-21 05:39:09,042 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 [2022-07-21 05:39:09,042 INFO L413 NwaCegarLoop]: 2100 mSDtfsCounter, 931 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 931 SdHoareTripleChecker+Valid, 3132 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 05:39:09,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [931 Valid, 3132 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 05:39:09,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102103 states.