./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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.4.3.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 ed8936a2abd022df2df7ae7f4cc5a13ffa2d4ca9f4dc64b188ddb89053a00421 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:16:27,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:16:27,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:16:27,604 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:16:27,604 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:16:27,606 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:16:27,608 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:16:27,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:16:27,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:16:27,619 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:16:27,619 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:16:27,621 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:16:27,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:16:27,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:16:27,625 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:16:27,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:16:27,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:16:27,629 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:16:27,632 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:16:27,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:16:27,638 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:16:27,639 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:16:27,640 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:16:27,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:16:27,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:16:27,648 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:16:27,648 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:16:27,649 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:16:27,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:16:27,650 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:16:27,651 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:16:27,652 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:16:27,653 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:16:27,654 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:16:27,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:16:27,655 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:16:27,655 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:16:27,656 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:16:27,656 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:16:27,656 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:16:27,657 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:16:27,658 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:16:27,659 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:16:27,688 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:16:27,688 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:16:27,689 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:16:27,689 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:16:27,689 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:16:27,690 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:16:27,690 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:16:27,690 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:16:27,690 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:16:27,691 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:16:27,691 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:16:27,692 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:16:27,692 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:16:27,692 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:16:27,692 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:16:27,692 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:16:27,693 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:16:27,693 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:16:27,693 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:16:27,693 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:16:27,693 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:16:27,693 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:16:27,694 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:16:27,695 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:16:27,695 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:16:27,695 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:16:27,695 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:16:27,696 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:16:27,696 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:16:27,696 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:16:27,696 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:16:27,696 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:16:27,696 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:16:27,697 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ed8936a2abd022df2df7ae7f4cc5a13ffa2d4ca9f4dc64b188ddb89053a00421 [2022-07-22 18:16:27,941 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:16:27,964 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:16:27,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:16:27,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:16:27,969 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:16:27,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-07-22 18:16:28,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a94d6749/a88fa63d2f6843638f3af37939988dfa/FLAG852af72a5 [2022-07-22 18:16:28,607 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:16:28,608 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-07-22 18:16:28,625 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a94d6749/a88fa63d2f6843638f3af37939988dfa/FLAG852af72a5 [2022-07-22 18:16:28,908 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a94d6749/a88fa63d2f6843638f3af37939988dfa [2022-07-22 18:16:28,910 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:16:28,913 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:16:28,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:16:28,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:16:28,920 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:16:28,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:16:28" (1/1) ... [2022-07-22 18:16:28,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214cc882 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:28, skipping insertion in model container [2022-07-22 18:16:28,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:16:28" (1/1) ... [2022-07-22 18:16:28,930 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:16:29,014 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:16:29,521 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.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[31957,31970] [2022-07-22 18:16:29,678 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:16:29,698 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:16:29,877 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.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[31957,31970] [2022-07-22 18:16:29,969 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:16:29,989 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:16:29,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:29 WrapperNode [2022-07-22 18:16:29,990 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:16:29,991 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:16:29,991 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:16:29,992 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:16:29,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:29" (1/1) ... [2022-07-22 18:16:30,027 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:29" (1/1) ... [2022-07-22 18:16:30,107 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 2694 [2022-07-22 18:16:30,108 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:16:30,109 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:16:30,109 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:16:30,109 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:16:30,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:29" (1/1) ... [2022-07-22 18:16:30,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:29" (1/1) ... [2022-07-22 18:16:30,127 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:29" (1/1) ... [2022-07-22 18:16:30,128 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:29" (1/1) ... [2022-07-22 18:16:30,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:29" (1/1) ... [2022-07-22 18:16:30,198 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:29" (1/1) ... [2022-07-22 18:16:30,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:29" (1/1) ... [2022-07-22 18:16:30,223 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:16:30,230 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:16:30,231 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:16:30,231 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:16:30,233 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:29" (1/1) ... [2022-07-22 18:16:30,239 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:16:30,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:16:30,267 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) [2022-07-22 18:16:30,290 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 [2022-07-22 18:16:30,305 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:16:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:16:30,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:16:30,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:16:30,527 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:16:30,529 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:16:32,156 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:16:32,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:16:32,177 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:16:32,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:16:32 BoogieIcfgContainer [2022-07-22 18:16:32,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:16:32,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:16:32,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:16:32,186 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:16:32,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:16:28" (1/3) ... [2022-07-22 18:16:32,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d48c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:16:32, skipping insertion in model container [2022-07-22 18:16:32,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:16:29" (2/3) ... [2022-07-22 18:16:32,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64d48c84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:16:32, skipping insertion in model container [2022-07-22 18:16:32,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:16:32" (3/3) ... [2022-07-22 18:16:32,190 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2022-07-22 18:16:32,203 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:16:32,204 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 18:16:32,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:16:32,293 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@5d974890, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@61ace43d [2022-07-22 18:16:32,293 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 18:16:32,302 INFO L276 IsEmpty]: Start isEmpty. Operand has 719 states, 717 states have (on average 1.7880055788005578) internal successors, (1282), 718 states have internal predecessors, (1282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-07-22 18:16:32,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:32,355 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] [2022-07-22 18:16:32,356 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:32,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:32,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1986438250, now seen corresponding path program 1 times [2022-07-22 18:16:32,371 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:32,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356860883] [2022-07-22 18:16:32,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:32,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:33,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:16:33,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:33,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356860883] [2022-07-22 18:16:33,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356860883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:33,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:33,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:16:33,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822980321] [2022-07-22 18:16:33,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:33,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:16:33,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:33,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:16:33,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:16:33,336 INFO L87 Difference]: Start difference. First operand has 719 states, 717 states have (on average 1.7880055788005578) internal successors, (1282), 718 states have internal predecessors, (1282), 0 states have call successors, (0), 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 4 states, 4 states have (on average 76.0) internal successors, (304), 4 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) [2022-07-22 18:16:33,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:33,719 INFO L93 Difference]: Finished difference Result 2117 states and 3779 transitions. [2022-07-22 18:16:33,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:16:33,722 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 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 [2022-07-22 18:16:33,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:33,749 INFO L225 Difference]: With dead ends: 2117 [2022-07-22 18:16:33,749 INFO L226 Difference]: Without dead ends: 1403 [2022-07-22 18:16:33,756 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 [2022-07-22 18:16:33,762 INFO L413 NwaCegarLoop]: 2124 mSDtfsCounter, 2773 mSDsluCounter, 1213 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 3337 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:16:33,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2773 Valid, 3337 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:16:33,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2022-07-22 18:16:33,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1401. [2022-07-22 18:16:33,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1401 states, 1400 states have (on average 1.5478571428571428) internal successors, (2167), 1400 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:33,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1401 states to 1401 states and 2167 transitions. [2022-07-22 18:16:33,938 INFO L78 Accepts]: Start accepts. Automaton has 1401 states and 2167 transitions. Word has length 304 [2022-07-22 18:16:33,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:33,940 INFO L495 AbstractCegarLoop]: Abstraction has 1401 states and 2167 transitions. [2022-07-22 18:16:33,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 76.0) internal successors, (304), 4 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) [2022-07-22 18:16:33,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1401 states and 2167 transitions. [2022-07-22 18:16:33,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-22 18:16:33,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:33,948 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] [2022-07-22 18:16:33,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:16:33,949 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:33,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:33,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1283684265, now seen corresponding path program 1 times [2022-07-22 18:16:33,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:33,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249665369] [2022-07-22 18:16:33,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:33,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:34,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:34,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:16:34,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:34,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249665369] [2022-07-22 18:16:34,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249665369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:34,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:34,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:16:34,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316371916] [2022-07-22 18:16:34,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:34,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:16:34,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:34,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:16:34,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:34,169 INFO L87 Difference]: Start difference. First operand 1401 states and 2167 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) [2022-07-22 18:16:34,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:34,394 INFO L93 Difference]: Finished difference Result 4028 states and 6197 transitions. [2022-07-22 18:16:34,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:16:34,395 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 [2022-07-22 18:16:34,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:34,409 INFO L225 Difference]: With dead ends: 4028 [2022-07-22 18:16:34,409 INFO L226 Difference]: Without dead ends: 2752 [2022-07-22 18:16:34,416 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 [2022-07-22 18:16:34,417 INFO L413 NwaCegarLoop]: 2102 mSDtfsCounter, 976 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 3159 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 [2022-07-22 18:16:34,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 3159 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:16:34,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2752 states. [2022-07-22 18:16:34,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2752 to 2750. [2022-07-22 18:16:34,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2750 states, 2749 states have (on average 1.5391051291378683) internal successors, (4231), 2749 states have internal predecessors, (4231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:34,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2750 states to 2750 states and 4231 transitions. [2022-07-22 18:16:34,625 INFO L78 Accepts]: Start accepts. Automaton has 2750 states and 4231 transitions. Word has length 306 [2022-07-22 18:16:34,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:34,626 INFO L495 AbstractCegarLoop]: Abstraction has 2750 states and 4231 transitions. [2022-07-22 18:16:34,626 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-07-22 18:16:34,627 INFO L276 IsEmpty]: Start isEmpty. Operand 2750 states and 4231 transitions. [2022-07-22 18:16:34,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-22 18:16:34,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:34,635 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] [2022-07-22 18:16:34,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:16:34,636 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:34,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:34,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1557954012, now seen corresponding path program 1 times [2022-07-22 18:16:34,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:34,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719881927] [2022-07-22 18:16:34,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:34,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:34,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:16:34,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:34,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719881927] [2022-07-22 18:16:34,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719881927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:34,716 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:34,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:16:34,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474854716] [2022-07-22 18:16:34,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:34,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:16:34,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:34,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:16:34,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:34,718 INFO L87 Difference]: Start difference. First operand 2750 states and 4231 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) [2022-07-22 18:16:35,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:35,014 INFO L93 Difference]: Finished difference Result 8183 states and 12577 transitions. [2022-07-22 18:16:35,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:16:35,015 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 [2022-07-22 18:16:35,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:35,037 INFO L225 Difference]: With dead ends: 8183 [2022-07-22 18:16:35,038 INFO L226 Difference]: Without dead ends: 5471 [2022-07-22 18:16:35,047 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 [2022-07-22 18:16:35,052 INFO L413 NwaCegarLoop]: 2204 mSDtfsCounter, 1099 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 3304 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 [2022-07-22 18:16:35,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 3304 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:16:35,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5471 states. [2022-07-22 18:16:35,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5471 to 2769. [2022-07-22 18:16:35,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2769 states, 2768 states have (on average 1.5386560693641618) internal successors, (4259), 2768 states have internal predecessors, (4259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:35,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 4259 transitions. [2022-07-22 18:16:35,302 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 4259 transitions. Word has length 306 [2022-07-22 18:16:35,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:35,302 INFO L495 AbstractCegarLoop]: Abstraction has 2769 states and 4259 transitions. [2022-07-22 18:16:35,303 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-07-22 18:16:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 4259 transitions. [2022-07-22 18:16:35,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-22 18:16:35,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:35,310 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, 1] [2022-07-22 18:16:35,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:16:35,310 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:35,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:35,311 INFO L85 PathProgramCache]: Analyzing trace with hash -1382512794, now seen corresponding path program 1 times [2022-07-22 18:16:35,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:35,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934331295] [2022-07-22 18:16:35,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:35,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:35,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:16:35,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:35,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934331295] [2022-07-22 18:16:35,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934331295] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:35,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:35,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:16:35,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245885399] [2022-07-22 18:16:35,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:35,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:16:35,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:35,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:16:35,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:35,397 INFO L87 Difference]: Start difference. First operand 2769 states and 4259 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:35,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:35,766 INFO L93 Difference]: Finished difference Result 8202 states and 12598 transitions. [2022-07-22 18:16:35,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:16:35,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 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 307 [2022-07-22 18:16:35,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:35,788 INFO L225 Difference]: With dead ends: 8202 [2022-07-22 18:16:35,789 INFO L226 Difference]: Without dead ends: 5489 [2022-07-22 18:16:35,794 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 [2022-07-22 18:16:35,795 INFO L413 NwaCegarLoop]: 2204 mSDtfsCounter, 1094 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 3304 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 [2022-07-22 18:16:35,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 3304 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:16:35,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5489 states. [2022-07-22 18:16:36,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5489 to 2787. [2022-07-22 18:16:36,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2787 states, 2786 states have (on average 1.5362526920315864) internal successors, (4280), 2786 states have internal predecessors, (4280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:36,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 4280 transitions. [2022-07-22 18:16:36,050 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 4280 transitions. Word has length 307 [2022-07-22 18:16:36,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:36,051 INFO L495 AbstractCegarLoop]: Abstraction has 2787 states and 4280 transitions. [2022-07-22 18:16:36,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:36,051 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 4280 transitions. [2022-07-22 18:16:36,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-07-22 18:16:36,058 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:36,059 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, 1, 1] [2022-07-22 18:16:36,059 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:16:36,059 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:36,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:36,060 INFO L85 PathProgramCache]: Analyzing trace with hash -738211950, now seen corresponding path program 1 times [2022-07-22 18:16:36,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:36,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441769258] [2022-07-22 18:16:36,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:36,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:16:36,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:36,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441769258] [2022-07-22 18:16:36,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441769258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:36,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:36,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:16:36,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676837997] [2022-07-22 18:16:36,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:36,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:16:36,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:36,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:16:36,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:36,185 INFO L87 Difference]: Start difference. First operand 2787 states and 4280 transitions. Second operand has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:36,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:36,648 INFO L93 Difference]: Finished difference Result 7926 states and 12105 transitions. [2022-07-22 18:16:36,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:16:36,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 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 308 [2022-07-22 18:16:36,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:36,671 INFO L225 Difference]: With dead ends: 7926 [2022-07-22 18:16:36,671 INFO L226 Difference]: Without dead ends: 5380 [2022-07-22 18:16:36,676 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 [2022-07-22 18:16:36,677 INFO L413 NwaCegarLoop]: 2164 mSDtfsCounter, 969 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 3221 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 [2022-07-22 18:16:36,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 3221 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:16:36,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5380 states. [2022-07-22 18:16:37,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5380 to 5378. [2022-07-22 18:16:37,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5378 states, 5377 states have (on average 1.5242700390552353) internal successors, (8196), 5377 states have internal predecessors, (8196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:37,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5378 states to 5378 states and 8196 transitions. [2022-07-22 18:16:37,124 INFO L78 Accepts]: Start accepts. Automaton has 5378 states and 8196 transitions. Word has length 308 [2022-07-22 18:16:37,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:37,126 INFO L495 AbstractCegarLoop]: Abstraction has 5378 states and 8196 transitions. [2022-07-22 18:16:37,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.66666666666667) internal successors, (308), 3 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:37,133 INFO L276 IsEmpty]: Start isEmpty. Operand 5378 states and 8196 transitions. [2022-07-22 18:16:37,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2022-07-22 18:16:37,166 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:37,166 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, 1, 1] [2022-07-22 18:16:37,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:16:37,167 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:37,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1877946257, now seen corresponding path program 1 times [2022-07-22 18:16:37,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:37,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095790214] [2022-07-22 18:16:37,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:37,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:16:37,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:37,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095790214] [2022-07-22 18:16:37,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095790214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:37,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:37,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:16:37,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576136639] [2022-07-22 18:16:37,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:37,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:16:37,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:37,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:16:37,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:16:37,496 INFO L87 Difference]: Start difference. First operand 5378 states and 8196 transitions. Second operand has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:38,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:38,539 INFO L93 Difference]: Finished difference Result 15652 states and 23797 transitions. [2022-07-22 18:16:38,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:16:38,540 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 0 states have call successors, (0), 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 308 [2022-07-22 18:16:38,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:38,575 INFO L225 Difference]: With dead ends: 15652 [2022-07-22 18:16:38,575 INFO L226 Difference]: Without dead ends: 10329 [2022-07-22 18:16:38,588 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 [2022-07-22 18:16:38,589 INFO L413 NwaCegarLoop]: 1784 mSDtfsCounter, 2534 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2534 SdHoareTripleChecker+Valid, 3878 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:16:38,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2534 Valid, 3878 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:16:38,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10329 states. [2022-07-22 18:16:39,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10329 to 10327. [2022-07-22 18:16:39,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10327 states, 10326 states have (on average 1.5092969203951192) internal successors, (15585), 10326 states have internal predecessors, (15585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:39,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10327 states to 10327 states and 15585 transitions. [2022-07-22 18:16:39,522 INFO L78 Accepts]: Start accepts. Automaton has 10327 states and 15585 transitions. Word has length 308 [2022-07-22 18:16:39,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:39,522 INFO L495 AbstractCegarLoop]: Abstraction has 10327 states and 15585 transitions. [2022-07-22 18:16:39,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 61.6) internal successors, (308), 5 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:39,523 INFO L276 IsEmpty]: Start isEmpty. Operand 10327 states and 15585 transitions. [2022-07-22 18:16:39,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2022-07-22 18:16:39,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:39,542 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, 1, 1, 1, 1] [2022-07-22 18:16:39,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:16:39,543 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:39,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:39,544 INFO L85 PathProgramCache]: Analyzing trace with hash -2116203553, now seen corresponding path program 1 times [2022-07-22 18:16:39,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:39,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984776078] [2022-07-22 18:16:39,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:39,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:39,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:39,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:16:39,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:39,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984776078] [2022-07-22 18:16:39,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984776078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:39,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:39,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:16:39,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839454174] [2022-07-22 18:16:39,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:39,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 18:16:39,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:39,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 18:16:39,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-22 18:16:39,845 INFO L87 Difference]: Start difference. First operand 10327 states and 15585 transitions. Second operand has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:41,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:41,575 INFO L93 Difference]: Finished difference Result 30275 states and 45615 transitions. [2022-07-22 18:16:41,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 18:16:41,576 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 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 310 [2022-07-22 18:16:41,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:41,632 INFO L225 Difference]: With dead ends: 30275 [2022-07-22 18:16:41,632 INFO L226 Difference]: Without dead ends: 20145 [2022-07-22 18:16:41,657 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 [2022-07-22 18:16:41,661 INFO L413 NwaCegarLoop]: 1817 mSDtfsCounter, 2338 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 2864 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:16:41,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2338 Valid, 2864 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:16:41,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20145 states. [2022-07-22 18:16:43,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20145 to 20143. [2022-07-22 18:16:43,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20143 states, 20142 states have (on average 1.4965743223115877) internal successors, (30144), 20142 states have internal predecessors, (30144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:43,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20143 states to 20143 states and 30144 transitions. [2022-07-22 18:16:43,285 INFO L78 Accepts]: Start accepts. Automaton has 20143 states and 30144 transitions. Word has length 310 [2022-07-22 18:16:43,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:43,286 INFO L495 AbstractCegarLoop]: Abstraction has 20143 states and 30144 transitions. [2022-07-22 18:16:43,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:43,286 INFO L276 IsEmpty]: Start isEmpty. Operand 20143 states and 30144 transitions. [2022-07-22 18:16:43,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-07-22 18:16:43,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:43,327 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, 1, 1, 1, 1, 1, 1] [2022-07-22 18:16:43,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:16:43,328 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:43,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:43,329 INFO L85 PathProgramCache]: Analyzing trace with hash -631881513, now seen corresponding path program 1 times [2022-07-22 18:16:43,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:43,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399718516] [2022-07-22 18:16:43,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:43,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:43,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:16:43,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:43,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399718516] [2022-07-22 18:16:43,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399718516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:43,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:43,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:16:43,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874099592] [2022-07-22 18:16:43,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:43,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:16:43,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:43,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:16:43,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:43,448 INFO L87 Difference]: Start difference. First operand 20143 states and 30144 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:46,306 INFO L93 Difference]: Finished difference Result 58709 states and 87584 transitions. [2022-07-22 18:16:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:16:46,306 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 312 [2022-07-22 18:16:46,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:46,402 INFO L225 Difference]: With dead ends: 58709 [2022-07-22 18:16:46,403 INFO L226 Difference]: Without dead ends: 39459 [2022-07-22 18:16:46,435 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 [2022-07-22 18:16:46,435 INFO L413 NwaCegarLoop]: 2100 mSDtfsCounter, 950 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 950 SdHoareTripleChecker+Valid, 3157 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 [2022-07-22 18:16:46,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [950 Valid, 3157 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:16:46,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39459 states. [2022-07-22 18:16:49,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39459 to 39457. [2022-07-22 18:16:49,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39457 states, 39456 states have (on average 1.4858576642335766) internal successors, (58626), 39456 states have internal predecessors, (58626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:49,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39457 states to 39457 states and 58626 transitions. [2022-07-22 18:16:49,409 INFO L78 Accepts]: Start accepts. Automaton has 39457 states and 58626 transitions. Word has length 312 [2022-07-22 18:16:49,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:16:49,409 INFO L495 AbstractCegarLoop]: Abstraction has 39457 states and 58626 transitions. [2022-07-22 18:16:49,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:49,410 INFO L276 IsEmpty]: Start isEmpty. Operand 39457 states and 58626 transitions. [2022-07-22 18:16:49,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2022-07-22 18:16:49,499 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:16:49,499 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, 1, 1, 1, 1, 1, 1] [2022-07-22 18:16:49,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:16:49,499 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:16:49,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:16:49,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1305870820, now seen corresponding path program 1 times [2022-07-22 18:16:49,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:16:49,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278041993] [2022-07-22 18:16:49,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:16:49,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:16:49,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:16:49,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:16:49,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:16:49,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278041993] [2022-07-22 18:16:49,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278041993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:16:49,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:16:49,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:16:49,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42024114] [2022-07-22 18:16:49,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:16:49,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:16:49,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:16:49,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:16:49,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:16:49,568 INFO L87 Difference]: Start difference. First operand 39457 states and 58626 transitions. Second operand has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:16:56,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:16:56,559 INFO L93 Difference]: Finished difference Result 117575 states and 174572 transitions. [2022-07-22 18:16:56,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:16:56,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 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 312 [2022-07-22 18:16:56,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:16:56,784 INFO L225 Difference]: With dead ends: 117575 [2022-07-22 18:16:56,785 INFO L226 Difference]: Without dead ends: 78561 [2022-07-22 18:16:56,883 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 [2022-07-22 18:16:56,886 INFO L413 NwaCegarLoop]: 2171 mSDtfsCounter, 1066 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 3271 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 [2022-07-22 18:16:56,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 3271 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:16:56,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78561 states. [2022-07-22 18:17:01,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78561 to 39647. [2022-07-22 18:17:01,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39647 states, 39646 states have (on average 1.4857993240175553) internal successors, (58906), 39646 states have internal predecessors, (58906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:01,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39647 states to 39647 states and 58906 transitions. [2022-07-22 18:17:01,945 INFO L78 Accepts]: Start accepts. Automaton has 39647 states and 58906 transitions. Word has length 312 [2022-07-22 18:17:01,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:17:01,945 INFO L495 AbstractCegarLoop]: Abstraction has 39647 states and 58906 transitions. [2022-07-22 18:17:01,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 39647 states and 58906 transitions. [2022-07-22 18:17:02,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2022-07-22 18:17:02,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:17:02,077 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:17:02,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:17:02,078 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:17:02,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:17:02,082 INFO L85 PathProgramCache]: Analyzing trace with hash 367949216, now seen corresponding path program 1 times [2022-07-22 18:17:02,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:17:02,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178372828] [2022-07-22 18:17:02,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:17:02,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:17:02,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:17:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:17:02,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:17:02,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178372828] [2022-07-22 18:17:02,184 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178372828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:17:02,184 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:17:02,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:17:02,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947002792] [2022-07-22 18:17:02,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:17:02,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:17:02,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:17:02,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:17:02,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:17:02,187 INFO L87 Difference]: Start difference. First operand 39647 states and 58906 transitions. Second operand has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:09,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:17:09,844 INFO L93 Difference]: Finished difference Result 117687 states and 174650 transitions. [2022-07-22 18:17:09,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:17:09,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 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 313 [2022-07-22 18:17:09,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:17:10,037 INFO L225 Difference]: With dead ends: 117687 [2022-07-22 18:17:10,037 INFO L226 Difference]: Without dead ends: 78723 [2022-07-22 18:17:10,109 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 [2022-07-22 18:17:10,111 INFO L413 NwaCegarLoop]: 2171 mSDtfsCounter, 1061 mSDsluCounter, 1100 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 3271 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 [2022-07-22 18:17:10,112 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1061 Valid, 3271 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:17:10,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78723 states. [2022-07-22 18:17:15,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78723 to 39809. [2022-07-22 18:17:15,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39809 states, 39808 states have (on average 1.4844252411575563) internal successors, (59092), 39808 states have internal predecessors, (59092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:15,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39809 states to 39809 states and 59092 transitions. [2022-07-22 18:17:15,491 INFO L78 Accepts]: Start accepts. Automaton has 39809 states and 59092 transitions. Word has length 313 [2022-07-22 18:17:15,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:17:15,492 INFO L495 AbstractCegarLoop]: Abstraction has 39809 states and 59092 transitions. [2022-07-22 18:17:15,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 104.33333333333333) internal successors, (313), 3 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:15,492 INFO L276 IsEmpty]: Start isEmpty. Operand 39809 states and 59092 transitions. [2022-07-22 18:17:15,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 315 [2022-07-22 18:17:15,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:17:15,591 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:17:15,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:17:15,592 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 18:17:15,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:17:15,592 INFO L85 PathProgramCache]: Analyzing trace with hash 303830930, now seen corresponding path program 1 times [2022-07-22 18:17:15,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:17:15,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306832760] [2022-07-22 18:17:15,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:17:15,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:17:15,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:17:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:17:15,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:17:15,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306832760] [2022-07-22 18:17:15,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306832760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:17:15,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:17:15,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:17:15,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393723060] [2022-07-22 18:17:15,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:17:15,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:17:15,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:17:15,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:17:15,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:17:15,803 INFO L87 Difference]: Start difference. First operand 39809 states and 59092 transitions. Second operand has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:17:24,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:17:24,126 INFO L93 Difference]: Finished difference Result 115875 states and 171594 transitions. [2022-07-22 18:17:24,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:17:24,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 104.66666666666667) internal successors, (314), 3 states have internal predecessors, (314), 0 states have call successors, (0), 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 314 [2022-07-22 18:17:24,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:17:24,323 INFO L225 Difference]: With dead ends: 115875 [2022-07-22 18:17:24,323 INFO L226 Difference]: Without dead ends: 77609 [2022-07-22 18:17:24,396 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 [2022-07-22 18:17:24,404 INFO L413 NwaCegarLoop]: 2131 mSDtfsCounter, 943 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 3188 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 [2022-07-22 18:17:24,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 3188 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:17:24,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77609 states.