./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/pals_floodmax.5.1.ufo.UNBOUNDED.pals.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 883e1ef2a948697d12588312fbc96d1f19bb97cf9b1fde4627b6f04bc3bcbaed --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:47:07,277 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:47:07,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:47:07,317 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:47:07,322 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:47:07,323 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:47:07,324 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:47:07,328 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:47:07,331 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:47:07,332 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:47:07,333 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:47:07,334 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:47:07,335 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:47:07,337 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:47:07,338 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:47:07,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:47:07,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:47:07,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:47:07,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:47:07,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:47:07,359 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:47:07,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:47:07,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:47:07,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:47:07,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:47:07,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:47:07,367 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:47:07,368 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:47:07,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:47:07,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:47:07,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:47:07,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:47:07,372 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:47:07,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:47:07,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:47:07,374 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:47:07,374 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:47:07,375 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:47:07,375 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:47:07,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:47:07,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:47:07,376 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:47:07,378 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:47:07,395 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:47:07,395 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:47:07,395 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:47:07,396 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:47:07,396 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:47:07,396 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:47:07,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:47:07,397 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:47:07,397 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:47:07,398 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:47:07,398 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:47:07,398 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:47:07,398 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:47:07,398 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:47:07,399 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:47:07,399 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:47:07,399 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:47:07,399 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:47:07,399 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:47:07,400 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:47:07,400 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:47:07,401 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:47:07,401 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:47:07,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:47:07,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:47:07,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:47:07,401 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:47:07,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:47:07,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:47:07,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:47:07,402 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:47:07,402 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:47:07,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:47:07,402 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 883e1ef2a948697d12588312fbc96d1f19bb97cf9b1fde4627b6f04bc3bcbaed [2022-07-19 17:47:07,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:47:07,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:47:07,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:47:07,588 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:47:07,588 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:47:07,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c [2022-07-19 17:47:07,629 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d504112a0/652cbfc2f9ad4fd490f87c10db30e8ab/FLAG11b143a85 [2022-07-19 17:47:08,062 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:47:08,063 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c [2022-07-19 17:47:08,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d504112a0/652cbfc2f9ad4fd490f87c10db30e8ab/FLAG11b143a85 [2022-07-19 17:47:08,401 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d504112a0/652cbfc2f9ad4fd490f87c10db30e8ab [2022-07-19 17:47:08,403 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:47:08,406 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:47:08,408 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:47:08,408 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:47:08,411 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:47:08,411 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:47:08" (1/1) ... [2022-07-19 17:47:08,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e1c6ff3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:47:08, skipping insertion in model container [2022-07-19 17:47:08,412 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:47:08" (1/1) ... [2022-07-19 17:47:08,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:47:08,464 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:47:08,717 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/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c[52225,52238] [2022-07-19 17:47:08,719 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:47:08,737 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:47:08,840 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/pals_floodmax.5.1.ufo.UNBOUNDED.pals.c[52225,52238] [2022-07-19 17:47:08,842 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:47:08,853 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:47:08,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:47:08 WrapperNode [2022-07-19 17:47:08,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:47:08,855 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:47:08,855 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:47:08,855 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:47:08,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:47:08" (1/1) ... [2022-07-19 17:47:08,882 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:47:08" (1/1) ... [2022-07-19 17:47:08,955 INFO L137 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2013 [2022-07-19 17:47:08,955 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:47:08,956 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:47:08,956 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:47:08,956 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:47:08,962 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:47:08" (1/1) ... [2022-07-19 17:47:08,962 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:47:08" (1/1) ... [2022-07-19 17:47:08,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:47:08" (1/1) ... [2022-07-19 17:47:08,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:47:08" (1/1) ... [2022-07-19 17:47:09,016 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:47:08" (1/1) ... [2022-07-19 17:47:09,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:47:08" (1/1) ... [2022-07-19 17:47:09,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:47:08" (1/1) ... [2022-07-19 17:47:09,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:47:09,061 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:47:09,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:47:09,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:47:09,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:47:08" (1/1) ... [2022-07-19 17:47:09,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:47:09,076 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:47:09,088 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) [2022-07-19 17:47:09,097 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 [2022-07-19 17:47:09,118 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:47:09,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:47:09,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:47:09,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:47:09,302 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:47:09,303 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:47:10,403 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:47:10,412 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:47:10,418 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 17:47:10,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:47:10 BoogieIcfgContainer [2022-07-19 17:47:10,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:47:10,423 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:47:10,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:47:10,426 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:47:10,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:47:08" (1/3) ... [2022-07-19 17:47:10,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b34644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:47:10, skipping insertion in model container [2022-07-19 17:47:10,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:47:08" (2/3) ... [2022-07-19 17:47:10,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60b34644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:47:10, skipping insertion in model container [2022-07-19 17:47:10,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:47:10" (3/3) ... [2022-07-19 17:47:10,429 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.1.ufo.UNBOUNDED.pals.c [2022-07-19 17:47:10,442 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:47:10,442 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:47:10,505 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:47:10,512 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@2ec9782d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a7cb8f9 [2022-07-19 17:47:10,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:47:10,527 INFO L276 IsEmpty]: Start isEmpty. Operand has 696 states, 694 states have (on average 1.84149855907781) internal successors, (1278), 695 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:10,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-19 17:47:10,550 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:10,550 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] [2022-07-19 17:47:10,551 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:10,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:10,555 INFO L85 PathProgramCache]: Analyzing trace with hash 703858837, now seen corresponding path program 1 times [2022-07-19 17:47:10,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:10,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359470096] [2022-07-19 17:47:10,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:10,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:10,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:10,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:10,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359470096] [2022-07-19 17:47:10,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [359470096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:10,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:10,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 17:47:10,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881449124] [2022-07-19 17:47:10,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:10,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 17:47:10,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:10,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 17:47:10,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 17:47:10,912 INFO L87 Difference]: Start difference. First operand has 696 states, 694 states have (on average 1.84149855907781) internal successors, (1278), 695 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:10,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:10,959 INFO L93 Difference]: Finished difference Result 863 states and 1567 transitions. [2022-07-19 17:47:10,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 17:47:10,961 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-07-19 17:47:10,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:10,973 INFO L225 Difference]: With dead ends: 863 [2022-07-19 17:47:10,973 INFO L226 Difference]: Without dead ends: 692 [2022-07-19 17:47:10,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 17:47:10,984 INFO L413 NwaCegarLoop]: 1271 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1271 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:10,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1271 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:47:10,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-07-19 17:47:11,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-07-19 17:47:11,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.8393632416787264) internal successors, (1271), 691 states have internal predecessors, (1271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:11,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1271 transitions. [2022-07-19 17:47:11,041 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1271 transitions. Word has length 153 [2022-07-19 17:47:11,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:11,042 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1271 transitions. [2022-07-19 17:47:11,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 76.5) internal successors, (153), 2 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:11,042 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1271 transitions. [2022-07-19 17:47:11,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-19 17:47:11,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:11,045 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] [2022-07-19 17:47:11,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:47:11,046 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:11,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:11,046 INFO L85 PathProgramCache]: Analyzing trace with hash 194385747, now seen corresponding path program 1 times [2022-07-19 17:47:11,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:11,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493763449] [2022-07-19 17:47:11,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:11,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:11,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:11,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:11,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:11,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493763449] [2022-07-19 17:47:11,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493763449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:11,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:11,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:47:11,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951688392] [2022-07-19 17:47:11,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:11,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:47:11,241 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:11,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:47:11,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:47:11,242 INFO L87 Difference]: Start difference. First operand 692 states and 1271 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:11,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:11,413 INFO L93 Difference]: Finished difference Result 862 states and 1560 transitions. [2022-07-19 17:47:11,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:47:11,413 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 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 153 [2022-07-19 17:47:11,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:11,420 INFO L225 Difference]: With dead ends: 862 [2022-07-19 17:47:11,420 INFO L226 Difference]: Without dead ends: 692 [2022-07-19 17:47:11,426 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:47:11,428 INFO L413 NwaCegarLoop]: 1269 mSDtfsCounter, 3 mSDsluCounter, 3764 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 5033 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:11,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 5033 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:47:11,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 692 states. [2022-07-19 17:47:11,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 692 to 692. [2022-07-19 17:47:11,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 1.7814761215629522) internal successors, (1231), 691 states have internal predecessors, (1231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:11,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1231 transitions. [2022-07-19 17:47:11,460 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1231 transitions. Word has length 153 [2022-07-19 17:47:11,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:11,461 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1231 transitions. [2022-07-19 17:47:11,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:11,461 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1231 transitions. [2022-07-19 17:47:11,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-07-19 17:47:11,464 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:11,464 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] [2022-07-19 17:47:11,465 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:47:11,465 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:11,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:11,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1935208052, now seen corresponding path program 1 times [2022-07-19 17:47:11,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:11,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435526355] [2022-07-19 17:47:11,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:11,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:11,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:11,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:11,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435526355] [2022-07-19 17:47:11,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435526355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:11,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:11,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:47:11,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865107050] [2022-07-19 17:47:11,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:11,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:47:11,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:11,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:47:11,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:47:11,604 INFO L87 Difference]: Start difference. First operand 692 states and 1231 transitions. Second operand has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:11,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:11,650 INFO L93 Difference]: Finished difference Result 1011 states and 1776 transitions. [2022-07-19 17:47:11,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:47:11,651 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 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 192 [2022-07-19 17:47:11,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:11,655 INFO L225 Difference]: With dead ends: 1011 [2022-07-19 17:47:11,655 INFO L226 Difference]: Without dead ends: 845 [2022-07-19 17:47:11,658 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 [2022-07-19 17:47:11,661 INFO L413 NwaCegarLoop]: 1225 mSDtfsCounter, 251 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2410 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:11,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 2410 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:47:11,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845 states. [2022-07-19 17:47:11,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845 to 842. [2022-07-19 17:47:11,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 842 states, 841 states have (on average 1.7633769322235433) internal successors, (1483), 841 states have internal predecessors, (1483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:11,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 842 states to 842 states and 1483 transitions. [2022-07-19 17:47:11,683 INFO L78 Accepts]: Start accepts. Automaton has 842 states and 1483 transitions. Word has length 192 [2022-07-19 17:47:11,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:11,684 INFO L495 AbstractCegarLoop]: Abstraction has 842 states and 1483 transitions. [2022-07-19 17:47:11,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.0) internal successors, (192), 3 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:11,684 INFO L276 IsEmpty]: Start isEmpty. Operand 842 states and 1483 transitions. [2022-07-19 17:47:11,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-07-19 17:47:11,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:11,686 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] [2022-07-19 17:47:11,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:47:11,687 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:11,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:11,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1135632720, now seen corresponding path program 1 times [2022-07-19 17:47:11,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:11,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135813999] [2022-07-19 17:47:11,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:11,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:11,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:11,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:11,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:11,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135813999] [2022-07-19 17:47:11,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135813999] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:11,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:11,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:47:11,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993242476] [2022-07-19 17:47:11,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:11,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:47:11,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:11,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:47:11,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:47:11,825 INFO L87 Difference]: Start difference. First operand 842 states and 1483 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:11,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:11,866 INFO L93 Difference]: Finished difference Result 1452 states and 2515 transitions. [2022-07-19 17:47:11,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:47:11,867 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 196 [2022-07-19 17:47:11,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:11,871 INFO L225 Difference]: With dead ends: 1452 [2022-07-19 17:47:11,871 INFO L226 Difference]: Without dead ends: 1136 [2022-07-19 17:47:11,872 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 [2022-07-19 17:47:11,876 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 251 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 2422 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:11,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 2422 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:47:11,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2022-07-19 17:47:11,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1132. [2022-07-19 17:47:11,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1132 states, 1131 states have (on average 1.742705570291777) internal successors, (1971), 1131 states have internal predecessors, (1971), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:11,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1132 states to 1132 states and 1971 transitions. [2022-07-19 17:47:11,905 INFO L78 Accepts]: Start accepts. Automaton has 1132 states and 1971 transitions. Word has length 196 [2022-07-19 17:47:11,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:11,905 INFO L495 AbstractCegarLoop]: Abstraction has 1132 states and 1971 transitions. [2022-07-19 17:47:11,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:11,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1132 states and 1971 transitions. [2022-07-19 17:47:11,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-19 17:47:11,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:11,908 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] [2022-07-19 17:47:11,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:47:11,908 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:11,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:11,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1111199852, now seen corresponding path program 1 times [2022-07-19 17:47:11,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:11,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413972423] [2022-07-19 17:47:11,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:11,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:11,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:11,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:11,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413972423] [2022-07-19 17:47:11,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413972423] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:11,999 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:11,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:47:11,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764682714] [2022-07-19 17:47:12,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:12,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:47:12,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:12,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:47:12,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:47:12,001 INFO L87 Difference]: Start difference. First operand 1132 states and 1971 transitions. Second operand has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:12,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:12,041 INFO L93 Difference]: Finished difference Result 2300 states and 3937 transitions. [2022-07-19 17:47:12,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:47:12,042 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 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 200 [2022-07-19 17:47:12,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:12,047 INFO L225 Difference]: With dead ends: 2300 [2022-07-19 17:47:12,048 INFO L226 Difference]: Without dead ends: 1694 [2022-07-19 17:47:12,049 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 [2022-07-19 17:47:12,049 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 243 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 2423 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:12,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [243 Valid, 2423 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:47:12,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1694 states. [2022-07-19 17:47:12,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1694 to 1688. [2022-07-19 17:47:12,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1687 states have (on average 1.7184350918790752) internal successors, (2899), 1687 states have internal predecessors, (2899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2899 transitions. [2022-07-19 17:47:12,103 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2899 transitions. Word has length 200 [2022-07-19 17:47:12,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:12,104 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2899 transitions. [2022-07-19 17:47:12,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.66666666666667) internal successors, (200), 3 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:12,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2899 transitions. [2022-07-19 17:47:12,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-19 17:47:12,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:12,109 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] [2022-07-19 17:47:12,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:47:12,110 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:12,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:12,110 INFO L85 PathProgramCache]: Analyzing trace with hash -224298040, now seen corresponding path program 1 times [2022-07-19 17:47:12,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:12,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885680589] [2022-07-19 17:47:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:12,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:12,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:12,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:12,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:12,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885680589] [2022-07-19 17:47:12,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885680589] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:12,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:12,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:47:12,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242683388] [2022-07-19 17:47:12,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:12,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:47:12,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:12,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:47:12,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:47:12,200 INFO L87 Difference]: Start difference. First operand 1688 states and 2899 transitions. Second operand has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:12,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:12,250 INFO L93 Difference]: Finished difference Result 3924 states and 6637 transitions. [2022-07-19 17:47:12,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:47:12,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 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 204 [2022-07-19 17:47:12,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:12,258 INFO L225 Difference]: With dead ends: 3924 [2022-07-19 17:47:12,258 INFO L226 Difference]: Without dead ends: 2762 [2022-07-19 17:47:12,260 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 [2022-07-19 17:47:12,261 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 235 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 2424 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:12,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [235 Valid, 2424 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:47:12,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2762 states. [2022-07-19 17:47:12,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2762 to 2752. [2022-07-19 17:47:12,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2752 states, 2751 states have (on average 1.693565976008724) internal successors, (4659), 2751 states have internal predecessors, (4659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:12,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2752 states to 2752 states and 4659 transitions. [2022-07-19 17:47:12,315 INFO L78 Accepts]: Start accepts. Automaton has 2752 states and 4659 transitions. Word has length 204 [2022-07-19 17:47:12,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:12,315 INFO L495 AbstractCegarLoop]: Abstraction has 2752 states and 4659 transitions. [2022-07-19 17:47:12,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 68.0) internal successors, (204), 3 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2752 states and 4659 transitions. [2022-07-19 17:47:12,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2022-07-19 17:47:12,318 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:12,319 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] [2022-07-19 17:47:12,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:47:12,319 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:12,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:12,319 INFO L85 PathProgramCache]: Analyzing trace with hash -107404444, now seen corresponding path program 1 times [2022-07-19 17:47:12,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:12,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169892196] [2022-07-19 17:47:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:12,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:12,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:12,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:12,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169892196] [2022-07-19 17:47:12,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169892196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:12,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:12,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:47:12,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972920326] [2022-07-19 17:47:12,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:12,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:47:12,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:12,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:47:12,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:47:12,415 INFO L87 Difference]: Start difference. First operand 2752 states and 4659 transitions. Second operand has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:12,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:12,493 INFO L93 Difference]: Finished difference Result 7028 states and 11749 transitions. [2022-07-19 17:47:12,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:47:12,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 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 208 [2022-07-19 17:47:12,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:12,508 INFO L225 Difference]: With dead ends: 7028 [2022-07-19 17:47:12,508 INFO L226 Difference]: Without dead ends: 4802 [2022-07-19 17:47:12,512 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 [2022-07-19 17:47:12,513 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 227 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:12,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 2425 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:47:12,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4802 states. [2022-07-19 17:47:12,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4802 to 4784. [2022-07-19 17:47:12,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4784 states, 4783 states have (on average 1.669872464980138) internal successors, (7987), 4783 states have internal predecessors, (7987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:12,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4784 states to 4784 states and 7987 transitions. [2022-07-19 17:47:12,654 INFO L78 Accepts]: Start accepts. Automaton has 4784 states and 7987 transitions. Word has length 208 [2022-07-19 17:47:12,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:12,654 INFO L495 AbstractCegarLoop]: Abstraction has 4784 states and 7987 transitions. [2022-07-19 17:47:12,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.33333333333333) internal successors, (208), 3 states have internal predecessors, (208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:12,655 INFO L276 IsEmpty]: Start isEmpty. Operand 4784 states and 7987 transitions. [2022-07-19 17:47:12,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2022-07-19 17:47:12,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:12,658 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] [2022-07-19 17:47:12,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:47:12,658 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:12,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:12,659 INFO L85 PathProgramCache]: Analyzing trace with hash -588675264, now seen corresponding path program 1 times [2022-07-19 17:47:12,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:12,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821448891] [2022-07-19 17:47:12,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:12,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:12,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:12,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:12,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821448891] [2022-07-19 17:47:12,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821448891] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:12,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:12,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:47:12,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10786026] [2022-07-19 17:47:12,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:12,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:47:12,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:12,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:47:12,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:47:12,767 INFO L87 Difference]: Start difference. First operand 4784 states and 7987 transitions. Second operand has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:13,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:13,493 INFO L93 Difference]: Finished difference Result 28980 states and 48413 transitions. [2022-07-19 17:47:13,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 17:47:13,494 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 212 [2022-07-19 17:47:13,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:13,570 INFO L225 Difference]: With dead ends: 28980 [2022-07-19 17:47:13,570 INFO L226 Difference]: Without dead ends: 24722 [2022-07-19 17:47:13,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-19 17:47:13,584 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 3173 mSDsluCounter, 10122 mSDsCounter, 0 mSdLazyCounter, 303 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3173 SdHoareTripleChecker+Valid, 11349 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:13,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3173 Valid, 11349 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 303 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 17:47:13,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24722 states. [2022-07-19 17:47:13,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24722 to 8878. [2022-07-19 17:47:13,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8878 states, 8877 states have (on average 1.6613720851639067) internal successors, (14748), 8877 states have internal predecessors, (14748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:13,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8878 states to 8878 states and 14748 transitions. [2022-07-19 17:47:13,979 INFO L78 Accepts]: Start accepts. Automaton has 8878 states and 14748 transitions. Word has length 212 [2022-07-19 17:47:13,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:13,980 INFO L495 AbstractCegarLoop]: Abstraction has 8878 states and 14748 transitions. [2022-07-19 17:47:13,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 30.285714285714285) internal successors, (212), 7 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:13,981 INFO L276 IsEmpty]: Start isEmpty. Operand 8878 states and 14748 transitions. [2022-07-19 17:47:13,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2022-07-19 17:47:13,985 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:13,985 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] [2022-07-19 17:47:13,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:47:13,985 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:13,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:13,986 INFO L85 PathProgramCache]: Analyzing trace with hash 959523782, now seen corresponding path program 1 times [2022-07-19 17:47:13,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:13,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634885797] [2022-07-19 17:47:13,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:13,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:14,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:14,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:14,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634885797] [2022-07-19 17:47:14,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634885797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:14,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:14,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 17:47:14,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979678707] [2022-07-19 17:47:14,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:14,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 17:47:14,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:14,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 17:47:14,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 17:47:14,051 INFO L87 Difference]: Start difference. First operand 8878 states and 14748 transitions. Second operand has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:14,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:14,447 INFO L93 Difference]: Finished difference Result 25962 states and 43216 transitions. [2022-07-19 17:47:14,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 17:47:14,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 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 213 [2022-07-19 17:47:14,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:14,478 INFO L225 Difference]: With dead ends: 25962 [2022-07-19 17:47:14,478 INFO L226 Difference]: Without dead ends: 17610 [2022-07-19 17:47:14,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:47:14,496 INFO L413 NwaCegarLoop]: 1224 mSDtfsCounter, 821 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 3896 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:14,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [821 Valid, 3896 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:47:14,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17610 states. [2022-07-19 17:47:14,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17610 to 13211. [2022-07-19 17:47:14,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13211 states, 13210 states have (on average 1.6620741862225588) internal successors, (21956), 13210 states have internal predecessors, (21956), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:14,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13211 states to 13211 states and 21956 transitions. [2022-07-19 17:47:14,899 INFO L78 Accepts]: Start accepts. Automaton has 13211 states and 21956 transitions. Word has length 213 [2022-07-19 17:47:14,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:14,900 INFO L495 AbstractCegarLoop]: Abstraction has 13211 states and 21956 transitions. [2022-07-19 17:47:14,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.25) internal successors, (213), 4 states have internal predecessors, (213), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:14,900 INFO L276 IsEmpty]: Start isEmpty. Operand 13211 states and 21956 transitions. [2022-07-19 17:47:14,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2022-07-19 17:47:14,907 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:14,907 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] [2022-07-19 17:47:14,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:47:14,908 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:14,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:14,911 INFO L85 PathProgramCache]: Analyzing trace with hash 1878058295, now seen corresponding path program 1 times [2022-07-19 17:47:14,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:14,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659724320] [2022-07-19 17:47:14,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:14,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:14,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:14,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:14,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:14,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659724320] [2022-07-19 17:47:14,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659724320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:14,982 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:14,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 17:47:14,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310702145] [2022-07-19 17:47:14,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:14,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 17:47:14,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:14,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 17:47:14,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 17:47:14,984 INFO L87 Difference]: Start difference. First operand 13211 states and 21956 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:15,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:15,460 INFO L93 Difference]: Finished difference Result 38898 states and 64698 transitions. [2022-07-19 17:47:15,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 17:47:15,460 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 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 214 [2022-07-19 17:47:15,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:15,505 INFO L225 Difference]: With dead ends: 38898 [2022-07-19 17:47:15,505 INFO L226 Difference]: Without dead ends: 26213 [2022-07-19 17:47:15,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:47:15,520 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 819 mSDsluCounter, 2674 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 819 SdHoareTripleChecker+Valid, 3902 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:15,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [819 Valid, 3902 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:47:15,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26213 states. [2022-07-19 17:47:16,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26213 to 19664. [2022-07-19 17:47:16,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19664 states, 19663 states have (on average 1.6598179321568427) internal successors, (32637), 19663 states have internal predecessors, (32637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:16,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19664 states to 19664 states and 32637 transitions. [2022-07-19 17:47:16,151 INFO L78 Accepts]: Start accepts. Automaton has 19664 states and 32637 transitions. Word has length 214 [2022-07-19 17:47:16,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:16,152 INFO L495 AbstractCegarLoop]: Abstraction has 19664 states and 32637 transitions. [2022-07-19 17:47:16,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:16,152 INFO L276 IsEmpty]: Start isEmpty. Operand 19664 states and 32637 transitions. [2022-07-19 17:47:16,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-19 17:47:16,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:16,161 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] [2022-07-19 17:47:16,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:47:16,161 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:16,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:16,162 INFO L85 PathProgramCache]: Analyzing trace with hash 674780591, now seen corresponding path program 1 times [2022-07-19 17:47:16,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:16,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187505813] [2022-07-19 17:47:16,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:16,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:16,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:16,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187505813] [2022-07-19 17:47:16,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187505813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:16,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:16,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:47:16,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487789957] [2022-07-19 17:47:16,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:16,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:47:16,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:16,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:47:16,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:47:16,238 INFO L87 Difference]: Start difference. First operand 19664 states and 32637 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:16,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:16,860 INFO L93 Difference]: Finished difference Result 43801 states and 72881 transitions. [2022-07-19 17:47:16,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:47:16,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-07-19 17:47:16,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:16,927 INFO L225 Difference]: With dead ends: 43801 [2022-07-19 17:47:16,928 INFO L226 Difference]: Without dead ends: 30487 [2022-07-19 17:47:16,962 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 [2022-07-19 17:47:16,963 INFO L413 NwaCegarLoop]: 1456 mSDtfsCounter, 258 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:16,963 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 2650 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:47:16,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30487 states. [2022-07-19 17:47:17,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30487 to 30485. [2022-07-19 17:47:17,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30485 states, 30484 states have (on average 1.6566395486156673) internal successors, (50501), 30484 states have internal predecessors, (50501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:17,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30485 states to 30485 states and 50501 transitions. [2022-07-19 17:47:17,707 INFO L78 Accepts]: Start accepts. Automaton has 30485 states and 50501 transitions. Word has length 215 [2022-07-19 17:47:17,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:17,707 INFO L495 AbstractCegarLoop]: Abstraction has 30485 states and 50501 transitions. [2022-07-19 17:47:17,708 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:17,708 INFO L276 IsEmpty]: Start isEmpty. Operand 30485 states and 50501 transitions. [2022-07-19 17:47:17,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-19 17:47:17,712 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:17,712 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] [2022-07-19 17:47:17,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:47:17,712 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:17,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:17,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1778051992, now seen corresponding path program 1 times [2022-07-19 17:47:17,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:17,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154137235] [2022-07-19 17:47:17,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:17,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:17,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:17,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:17,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154137235] [2022-07-19 17:47:17,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154137235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:17,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:17,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:47:17,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338706831] [2022-07-19 17:47:17,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:17,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:47:17,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:17,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:47:17,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:47:17,782 INFO L87 Difference]: Start difference. First operand 30485 states and 50501 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:18,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:18,722 INFO L93 Difference]: Finished difference Result 67690 states and 112150 transitions. [2022-07-19 17:47:18,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:47:18,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-07-19 17:47:18,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:18,807 INFO L225 Difference]: With dead ends: 67690 [2022-07-19 17:47:18,808 INFO L226 Difference]: Without dead ends: 47014 [2022-07-19 17:47:18,827 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 [2022-07-19 17:47:18,828 INFO L413 NwaCegarLoop]: 1440 mSDtfsCounter, 250 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2635 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:18,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 2635 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:47:18,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47014 states. [2022-07-19 17:47:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47014 to 47012. [2022-07-19 17:47:19,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47012 states, 47011 states have (on average 1.6499542660228457) internal successors, (77566), 47011 states have internal predecessors, (77566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:19,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47012 states to 47012 states and 77566 transitions. [2022-07-19 17:47:19,963 INFO L78 Accepts]: Start accepts. Automaton has 47012 states and 77566 transitions. Word has length 215 [2022-07-19 17:47:19,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:19,964 INFO L495 AbstractCegarLoop]: Abstraction has 47012 states and 77566 transitions. [2022-07-19 17:47:19,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:19,964 INFO L276 IsEmpty]: Start isEmpty. Operand 47012 states and 77566 transitions. [2022-07-19 17:47:19,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-19 17:47:19,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:19,967 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] [2022-07-19 17:47:19,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 17:47:19,968 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:19,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:19,968 INFO L85 PathProgramCache]: Analyzing trace with hash -897585958, now seen corresponding path program 1 times [2022-07-19 17:47:19,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:19,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651669570] [2022-07-19 17:47:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:19,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:19,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:20,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:20,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651669570] [2022-07-19 17:47:20,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651669570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:20,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:20,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:47:20,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108914825] [2022-07-19 17:47:20,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:20,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:47:20,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:20,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:47:20,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:47:20,044 INFO L87 Difference]: Start difference. First operand 47012 states and 77566 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:21,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:21,403 INFO L93 Difference]: Finished difference Result 91429 states and 151051 transitions. [2022-07-19 17:47:21,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:47:21,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-07-19 17:47:21,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:21,515 INFO L225 Difference]: With dead ends: 91429 [2022-07-19 17:47:21,515 INFO L226 Difference]: Without dead ends: 66544 [2022-07-19 17:47:21,536 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 [2022-07-19 17:47:21,537 INFO L413 NwaCegarLoop]: 1369 mSDtfsCounter, 234 mSDsluCounter, 1197 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2566 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:21,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 2566 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:47:21,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66544 states. [2022-07-19 17:47:22,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66544 to 66542. [2022-07-19 17:47:22,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 66542 states, 66541 states have (on average 1.6447453449752785) internal successors, (109443), 66541 states have internal predecessors, (109443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:23,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66542 states to 66542 states and 109443 transitions. [2022-07-19 17:47:23,274 INFO L78 Accepts]: Start accepts. Automaton has 66542 states and 109443 transitions. Word has length 215 [2022-07-19 17:47:23,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:23,274 INFO L495 AbstractCegarLoop]: Abstraction has 66542 states and 109443 transitions. [2022-07-19 17:47:23,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:23,275 INFO L276 IsEmpty]: Start isEmpty. Operand 66542 states and 109443 transitions. [2022-07-19 17:47:23,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-19 17:47:23,277 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:23,277 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] [2022-07-19 17:47:23,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 17:47:23,278 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:23,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:23,278 INFO L85 PathProgramCache]: Analyzing trace with hash 456861469, now seen corresponding path program 1 times [2022-07-19 17:47:23,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:23,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35299084] [2022-07-19 17:47:23,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:23,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:23,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:23,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:23,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:23,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35299084] [2022-07-19 17:47:23,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35299084] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:23,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:23,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 17:47:23,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994507212] [2022-07-19 17:47:23,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:23,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 17:47:23,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:23,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 17:47:23,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 17:47:23,360 INFO L87 Difference]: Start difference. First operand 66542 states and 109443 transitions. Second operand has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:25,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:25,738 INFO L93 Difference]: Finished difference Result 200933 states and 331596 transitions. [2022-07-19 17:47:25,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 17:47:25,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-07-19 17:47:25,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:25,953 INFO L225 Difference]: With dead ends: 200933 [2022-07-19 17:47:25,953 INFO L226 Difference]: Without dead ends: 134985 [2022-07-19 17:47:26,010 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:47:26,011 INFO L413 NwaCegarLoop]: 1246 mSDtfsCounter, 817 mSDsluCounter, 2676 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 3922 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:26,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [817 Valid, 3922 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:47:26,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134985 states. [2022-07-19 17:47:28,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134985 to 100472. [2022-07-19 17:47:28,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100472 states, 100471 states have (on average 1.643847478376845) internal successors, (165159), 100471 states have internal predecessors, (165159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:29,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100472 states to 100472 states and 165159 transitions. [2022-07-19 17:47:29,012 INFO L78 Accepts]: Start accepts. Automaton has 100472 states and 165159 transitions. Word has length 215 [2022-07-19 17:47:29,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:29,012 INFO L495 AbstractCegarLoop]: Abstraction has 100472 states and 165159 transitions. [2022-07-19 17:47:29,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.75) internal successors, (215), 4 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:29,013 INFO L276 IsEmpty]: Start isEmpty. Operand 100472 states and 165159 transitions. [2022-07-19 17:47:29,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-19 17:47:29,014 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:29,014 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] [2022-07-19 17:47:29,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 17:47:29,015 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:29,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:29,015 INFO L85 PathProgramCache]: Analyzing trace with hash 434112147, now seen corresponding path program 1 times [2022-07-19 17:47:29,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:29,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32021661] [2022-07-19 17:47:29,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:29,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:29,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:29,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:29,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:29,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32021661] [2022-07-19 17:47:29,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32021661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:29,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:29,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:47:29,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975776311] [2022-07-19 17:47:29,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:29,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:47:29,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:29,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:47:29,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:47:29,089 INFO L87 Difference]: Start difference. First operand 100472 states and 165159 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:31,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:31,845 INFO L93 Difference]: Finished difference Result 195554 states and 322015 transitions. [2022-07-19 17:47:31,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:47:31,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-07-19 17:47:31,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:32,073 INFO L225 Difference]: With dead ends: 195554 [2022-07-19 17:47:32,073 INFO L226 Difference]: Without dead ends: 141968 [2022-07-19 17:47:32,124 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 [2022-07-19 17:47:32,125 INFO L413 NwaCegarLoop]: 1345 mSDtfsCounter, 226 mSDsluCounter, 1198 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2543 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:32,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 2543 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:47:32,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141968 states. [2022-07-19 17:47:35,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141968 to 141966. [2022-07-19 17:47:35,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141966 states, 141965 states have (on average 1.6384672278378474) internal successors, (232605), 141965 states have internal predecessors, (232605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:36,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141966 states to 141966 states and 232605 transitions. [2022-07-19 17:47:36,081 INFO L78 Accepts]: Start accepts. Automaton has 141966 states and 232605 transitions. Word has length 215 [2022-07-19 17:47:36,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:47:36,081 INFO L495 AbstractCegarLoop]: Abstraction has 141966 states and 232605 transitions. [2022-07-19 17:47:36,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:36,081 INFO L276 IsEmpty]: Start isEmpty. Operand 141966 states and 232605 transitions. [2022-07-19 17:47:36,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-07-19 17:47:36,084 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:47:36,084 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] [2022-07-19 17:47:36,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 17:47:36,084 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:47:36,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:47:36,085 INFO L85 PathProgramCache]: Analyzing trace with hash 114596897, now seen corresponding path program 1 times [2022-07-19 17:47:36,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:47:36,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220346628] [2022-07-19 17:47:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:47:36,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:47:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:47:36,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:47:36,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:47:36,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220346628] [2022-07-19 17:47:36,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220346628] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:47:36,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:47:36,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:47:36,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296359254] [2022-07-19 17:47:36,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:47:36,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:47:36,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:47:36,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:47:36,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:47:36,163 INFO L87 Difference]: Start difference. First operand 141966 states and 232605 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:47:40,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:47:40,996 INFO L93 Difference]: Finished difference Result 314188 states and 515120 transitions. [2022-07-19 17:47:41,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:47:41,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2022-07-19 17:47:41,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:47:41,437 INFO L225 Difference]: With dead ends: 314188 [2022-07-19 17:47:41,437 INFO L226 Difference]: Without dead ends: 216200 [2022-07-19 17:47:41,508 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 [2022-07-19 17:47:41,509 INFO L413 NwaCegarLoop]: 1416 mSDtfsCounter, 242 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 2612 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:47:41,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 2612 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:47:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216200 states.