./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 291c2115713bbaa0f9f6deebfd096e226de91dfa7091a11105c0815d1cda6526 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 17:59:12,287 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 17:59:12,290 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 17:59:12,330 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 17:59:12,335 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 17:59:12,337 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 17:59:12,339 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 17:59:12,344 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 17:59:12,346 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 17:59:12,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 17:59:12,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 17:59:12,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 17:59:12,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 17:59:12,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 17:59:12,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 17:59:12,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 17:59:12,367 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 17:59:12,368 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 17:59:12,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 17:59:12,372 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 17:59:12,376 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 17:59:12,378 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 17:59:12,379 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 17:59:12,380 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 17:59:12,381 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 17:59:12,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 17:59:12,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 17:59:12,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 17:59:12,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 17:59:12,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 17:59:12,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 17:59:12,389 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 17:59:12,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 17:59:12,392 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 17:59:12,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 17:59:12,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 17:59:12,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 17:59:12,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 17:59:12,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 17:59:12,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 17:59:12,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 17:59:12,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 17:59:12,398 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 17:59:12,428 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 17:59:12,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 17:59:12,430 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 17:59:12,430 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 17:59:12,431 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 17:59:12,431 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 17:59:12,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 17:59:12,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 17:59:12,432 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 17:59:12,435 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 17:59:12,435 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 17:59:12,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 17:59:12,436 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 17:59:12,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 17:59:12,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 17:59:12,436 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 17:59:12,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 17:59:12,437 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 17:59:12,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 17:59:12,437 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 17:59:12,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 17:59:12,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 17:59:12,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 17:59:12,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 17:59:12,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:59:12,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 17:59:12,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 17:59:12,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 17:59:12,439 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 17:59:12,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 17:59:12,440 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 17:59:12,440 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 17:59:12,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 17:59:12,441 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 291c2115713bbaa0f9f6deebfd096e226de91dfa7091a11105c0815d1cda6526 [2022-07-19 17:59:12,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 17:59:12,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 17:59:12,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 17:59:12,744 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 17:59:12,745 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 17:59:12,746 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-07-19 17:59:12,808 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8967b00fc/bed153658cb04b388ebb75ac68157f10/FLAGf5332f9f6 [2022-07-19 17:59:13,255 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 17:59:13,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-07-19 17:59:13,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8967b00fc/bed153658cb04b388ebb75ac68157f10/FLAGf5332f9f6 [2022-07-19 17:59:13,617 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8967b00fc/bed153658cb04b388ebb75ac68157f10 [2022-07-19 17:59:13,619 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 17:59:13,621 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 17:59:13,625 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 17:59:13,625 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 17:59:13,629 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 17:59:13,629 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:59:13" (1/1) ... [2022-07-19 17:59:13,630 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5470e09a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:59:13, skipping insertion in model container [2022-07-19 17:59:13,631 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 05:59:13" (1/1) ... [2022-07-19 17:59:13,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 17:59:13,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 17:59:13,973 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7181,7194] [2022-07-19 17:59:14,017 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:59:14,029 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 17:59:14,082 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[7181,7194] [2022-07-19 17:59:14,102 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 17:59:14,118 INFO L208 MainTranslator]: Completed translation [2022-07-19 17:59:14,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:59:14 WrapperNode [2022-07-19 17:59:14,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 17:59:14,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 17:59:14,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 17:59:14,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 17:59:14,128 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:59:14" (1/1) ... [2022-07-19 17:59:14,141 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:59:14" (1/1) ... [2022-07-19 17:59:14,172 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 572 [2022-07-19 17:59:14,173 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 17:59:14,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 17:59:14,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 17:59:14,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 17:59:14,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:59:14" (1/1) ... [2022-07-19 17:59:14,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:59:14" (1/1) ... [2022-07-19 17:59:14,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:59:14" (1/1) ... [2022-07-19 17:59:14,186 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:59:14" (1/1) ... [2022-07-19 17:59:14,194 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:59:14" (1/1) ... [2022-07-19 17:59:14,199 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:59:14" (1/1) ... [2022-07-19 17:59:14,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:59:14" (1/1) ... [2022-07-19 17:59:14,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 17:59:14,207 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 17:59:14,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 17:59:14,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 17:59:14,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:59:14" (1/1) ... [2022-07-19 17:59:14,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 17:59:14,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:59:14,248 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 17:59:14,276 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 17:59:14,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 17:59:14,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 17:59:14,311 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 17:59:14,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 17:59:14,403 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 17:59:14,404 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 17:59:14,871 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 17:59:14,878 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 17:59:14,879 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 17:59:14,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:59:14 BoogieIcfgContainer [2022-07-19 17:59:14,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 17:59:14,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 17:59:14,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 17:59:14,887 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 17:59:14,887 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 05:59:13" (1/3) ... [2022-07-19 17:59:14,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a086dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:59:14, skipping insertion in model container [2022-07-19 17:59:14,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 05:59:14" (2/3) ... [2022-07-19 17:59:14,888 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77a086dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 05:59:14, skipping insertion in model container [2022-07-19 17:59:14,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 05:59:14" (3/3) ... [2022-07-19 17:59:14,890 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2022-07-19 17:59:14,902 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 17:59:14,903 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 17:59:14,946 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 17:59:14,953 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@15af837, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@b17e3b7 [2022-07-19 17:59:14,953 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 17:59:14,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 132 states have (on average 1.75) internal successors, (231), 133 states have internal predecessors, (231), 0 states have call successors, (0), 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 17:59:14,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-19 17:59:14,968 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:14,968 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] [2022-07-19 17:59:14,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:14,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:14,975 INFO L85 PathProgramCache]: Analyzing trace with hash -278043806, now seen corresponding path program 1 times [2022-07-19 17:59:14,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:14,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145314013] [2022-07-19 17:59:14,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:14,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:15,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:15,355 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 17:59:15,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:15,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145314013] [2022-07-19 17:59:15,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145314013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:15,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:15,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:59:15,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813147107] [2022-07-19 17:59:15,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:15,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:59:15,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:15,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:59:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:59:15,396 INFO L87 Difference]: Start difference. First operand has 134 states, 132 states have (on average 1.75) internal successors, (231), 133 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 17:59:15,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:15,540 INFO L93 Difference]: Finished difference Result 297 states and 500 transitions. [2022-07-19 17:59:15,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:59:15,543 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-07-19 17:59:15,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:15,559 INFO L225 Difference]: With dead ends: 297 [2022-07-19 17:59:15,560 INFO L226 Difference]: Without dead ends: 205 [2022-07-19 17:59:15,564 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 17:59:15,568 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 132 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:59:15,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 406 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:59:15,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-19 17:59:15,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2022-07-19 17:59:15,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 1.5970149253731343) internal successors, (321), 201 states have internal predecessors, (321), 0 states have call successors, (0), 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 17:59:15,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 321 transitions. [2022-07-19 17:59:15,650 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 321 transitions. Word has length 50 [2022-07-19 17:59:15,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:15,651 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 321 transitions. [2022-07-19 17:59:15,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 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 17:59:15,652 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 321 transitions. [2022-07-19 17:59:15,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-19 17:59:15,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:15,658 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] [2022-07-19 17:59:15,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 17:59:15,659 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:15,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:15,660 INFO L85 PathProgramCache]: Analyzing trace with hash 1333847823, now seen corresponding path program 1 times [2022-07-19 17:59:15,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:15,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722863361] [2022-07-19 17:59:15,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:15,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:15,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:15,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:59:15,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:15,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722863361] [2022-07-19 17:59:15,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722863361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:15,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:15,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:59:15,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63895482] [2022-07-19 17:59:15,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:15,792 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:59:15,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:15,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:59:15,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:59:15,793 INFO L87 Difference]: Start difference. First operand 202 states and 321 transitions. Second operand has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 17:59:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:15,862 INFO L93 Difference]: Finished difference Result 496 states and 805 transitions. [2022-07-19 17:59:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:59:15,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-07-19 17:59:15,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:15,865 INFO L225 Difference]: With dead ends: 496 [2022-07-19 17:59:15,865 INFO L226 Difference]: Without dead ends: 342 [2022-07-19 17:59:15,866 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 17:59:15,868 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 118 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 385 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 17:59:15,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [118 Valid, 385 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:59:15,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-07-19 17:59:15,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 338. [2022-07-19 17:59:15,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 338 states, 337 states have (on average 1.6112759643916914) internal successors, (543), 337 states have internal predecessors, (543), 0 states have call successors, (0), 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 17:59:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 338 states to 338 states and 543 transitions. [2022-07-19 17:59:15,901 INFO L78 Accepts]: Start accepts. Automaton has 338 states and 543 transitions. Word has length 52 [2022-07-19 17:59:15,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:15,901 INFO L495 AbstractCegarLoop]: Abstraction has 338 states and 543 transitions. [2022-07-19 17:59:15,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.333333333333332) internal successors, (52), 3 states have internal predecessors, (52), 0 states have call successors, (0), 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 17:59:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 338 states and 543 transitions. [2022-07-19 17:59:15,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-19 17:59:15,904 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:15,904 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] [2022-07-19 17:59:15,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 17:59:15,905 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:15,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:15,906 INFO L85 PathProgramCache]: Analyzing trace with hash 329846722, now seen corresponding path program 1 times [2022-07-19 17:59:15,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:15,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895982414] [2022-07-19 17:59:15,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:15,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:15,968 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 17:59:15,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:15,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895982414] [2022-07-19 17:59:15,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895982414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:15,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:15,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:59:15,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451284672] [2022-07-19 17:59:15,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:15,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:59:15,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:15,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:59:15,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:59:15,972 INFO L87 Difference]: Start difference. First operand 338 states and 543 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 17:59:16,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:16,029 INFO L93 Difference]: Finished difference Result 890 states and 1445 transitions. [2022-07-19 17:59:16,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:59:16,030 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-07-19 17:59:16,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:16,034 INFO L225 Difference]: With dead ends: 890 [2022-07-19 17:59:16,035 INFO L226 Difference]: Without dead ends: 600 [2022-07-19 17:59:16,037 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 17:59:16,038 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 113 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 386 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 17:59:16,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 386 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:59:16,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2022-07-19 17:59:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 594. [2022-07-19 17:59:16,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 594 states, 593 states have (on average 1.6104553119730185) internal successors, (955), 593 states have internal predecessors, (955), 0 states have call successors, (0), 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 17:59:16,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 955 transitions. [2022-07-19 17:59:16,088 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 955 transitions. Word has length 54 [2022-07-19 17:59:16,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:16,088 INFO L495 AbstractCegarLoop]: Abstraction has 594 states and 955 transitions. [2022-07-19 17:59:16,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 17:59:16,089 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 955 transitions. [2022-07-19 17:59:16,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-19 17:59:16,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:16,090 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] [2022-07-19 17:59:16,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 17:59:16,091 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:16,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:16,092 INFO L85 PathProgramCache]: Analyzing trace with hash 1296814383, now seen corresponding path program 1 times [2022-07-19 17:59:16,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:16,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391926811] [2022-07-19 17:59:16,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:16,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:16,205 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 17:59:16,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:16,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391926811] [2022-07-19 17:59:16,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391926811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:16,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:16,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:59:16,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500172043] [2022-07-19 17:59:16,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:16,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:59:16,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:16,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:59:16,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:59:16,209 INFO L87 Difference]: Start difference. First operand 594 states and 955 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 17:59:16,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:16,512 INFO L93 Difference]: Finished difference Result 2582 states and 4241 transitions. [2022-07-19 17:59:16,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 17:59:16,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-07-19 17:59:16,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:16,525 INFO L225 Difference]: With dead ends: 2582 [2022-07-19 17:59:16,526 INFO L226 Difference]: Without dead ends: 2036 [2022-07-19 17:59:16,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 17:59:16,540 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 851 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1294 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:59:16,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1294 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:59:16,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2036 states. [2022-07-19 17:59:16,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2036 to 1071. [2022-07-19 17:59:16,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1071 states, 1070 states have (on average 1.6196261682242992) internal successors, (1733), 1070 states have internal predecessors, (1733), 0 states have call successors, (0), 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 17:59:16,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1733 transitions. [2022-07-19 17:59:16,682 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1733 transitions. Word has length 56 [2022-07-19 17:59:16,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:16,682 INFO L495 AbstractCegarLoop]: Abstraction has 1071 states and 1733 transitions. [2022-07-19 17:59:16,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 17:59:16,683 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1733 transitions. [2022-07-19 17:59:16,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-19 17:59:16,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:16,685 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] [2022-07-19 17:59:16,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 17:59:16,685 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:16,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:16,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1484036003, now seen corresponding path program 1 times [2022-07-19 17:59:16,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:16,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030830608] [2022-07-19 17:59:16,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:16,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:16,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:59:16,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:16,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030830608] [2022-07-19 17:59:16,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030830608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:16,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:16,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 17:59:16,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135861475] [2022-07-19 17:59:16,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:16,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 17:59:16,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:16,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 17:59:16,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 17:59:16,752 INFO L87 Difference]: Start difference. First operand 1071 states and 1733 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 17:59:16,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:16,984 INFO L93 Difference]: Finished difference Result 3136 states and 5140 transitions. [2022-07-19 17:59:16,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 17:59:16,986 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-07-19 17:59:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:16,995 INFO L225 Difference]: With dead ends: 3136 [2022-07-19 17:59:16,996 INFO L226 Difference]: Without dead ends: 2113 [2022-07-19 17:59:16,999 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 17:59:17,004 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 404 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 404 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:59:17,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [404 Valid, 606 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:59:17,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2022-07-19 17:59:17,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 1583. [2022-07-19 17:59:17,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1583 states, 1582 states have (on average 1.6270543615676358) internal successors, (2574), 1582 states have internal predecessors, (2574), 0 states have call successors, (0), 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 17:59:17,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1583 states to 1583 states and 2574 transitions. [2022-07-19 17:59:17,194 INFO L78 Accepts]: Start accepts. Automaton has 1583 states and 2574 transitions. Word has length 57 [2022-07-19 17:59:17,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:17,194 INFO L495 AbstractCegarLoop]: Abstraction has 1583 states and 2574 transitions. [2022-07-19 17:59:17,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 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 17:59:17,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1583 states and 2574 transitions. [2022-07-19 17:59:17,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-19 17:59:17,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:17,197 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] [2022-07-19 17:59:17,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 17:59:17,197 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:17,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:17,198 INFO L85 PathProgramCache]: Analyzing trace with hash -1297470346, now seen corresponding path program 1 times [2022-07-19 17:59:17,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:17,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444458624] [2022-07-19 17:59:17,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:17,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:17,248 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 17:59:17,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:17,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444458624] [2022-07-19 17:59:17,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444458624] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:17,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:17,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 17:59:17,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043944308] [2022-07-19 17:59:17,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:17,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 17:59:17,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:17,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 17:59:17,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 17:59:17,251 INFO L87 Difference]: Start difference. First operand 1583 states and 2574 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:17,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:17,584 INFO L93 Difference]: Finished difference Result 4604 states and 7538 transitions. [2022-07-19 17:59:17,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 17:59:17,585 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-19 17:59:17,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:17,599 INFO L225 Difference]: With dead ends: 4604 [2022-07-19 17:59:17,599 INFO L226 Difference]: Without dead ends: 3069 [2022-07-19 17:59:17,604 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 17:59:17,604 INFO L413 NwaCegarLoop]: 203 mSDtfsCounter, 402 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:59:17,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 649 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:59:17,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3069 states. [2022-07-19 17:59:17,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3069 to 2314. [2022-07-19 17:59:17,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2314 states, 2313 states have (on average 1.6260268050151319) internal successors, (3761), 2313 states have internal predecessors, (3761), 0 states have call successors, (0), 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 17:59:17,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2314 states to 2314 states and 3761 transitions. [2022-07-19 17:59:17,878 INFO L78 Accepts]: Start accepts. Automaton has 2314 states and 3761 transitions. Word has length 58 [2022-07-19 17:59:17,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:17,879 INFO L495 AbstractCegarLoop]: Abstraction has 2314 states and 3761 transitions. [2022-07-19 17:59:17,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:17,879 INFO L276 IsEmpty]: Start isEmpty. Operand 2314 states and 3761 transitions. [2022-07-19 17:59:17,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 17:59:17,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:17,881 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] [2022-07-19 17:59:17,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 17:59:17,882 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:17,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:17,882 INFO L85 PathProgramCache]: Analyzing trace with hash -370820470, now seen corresponding path program 1 times [2022-07-19 17:59:17,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:17,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041722523] [2022-07-19 17:59:17,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:17,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:17,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:17,949 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 17:59:17,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:17,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041722523] [2022-07-19 17:59:17,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041722523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:17,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:17,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:59:17,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178909653] [2022-07-19 17:59:17,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:17,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:59:17,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:17,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:59:17,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:59:17,951 INFO L87 Difference]: Start difference. First operand 2314 states and 3761 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:18,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:18,217 INFO L93 Difference]: Finished difference Result 5104 states and 8336 transitions. [2022-07-19 17:59:18,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:59:18,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-19 17:59:18,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:18,233 INFO L225 Difference]: With dead ends: 5104 [2022-07-19 17:59:18,233 INFO L226 Difference]: Without dead ends: 3495 [2022-07-19 17:59:18,239 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 17:59:18,241 INFO L413 NwaCegarLoop]: 272 mSDtfsCounter, 117 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 451 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 17:59:18,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 451 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:59:18,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2022-07-19 17:59:18,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3493. [2022-07-19 17:59:18,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 3492 states have (on average 1.622852233676976) internal successors, (5667), 3492 states have internal predecessors, (5667), 0 states have call successors, (0), 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 17:59:18,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 5667 transitions. [2022-07-19 17:59:18,523 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 5667 transitions. Word has length 59 [2022-07-19 17:59:18,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:18,523 INFO L495 AbstractCegarLoop]: Abstraction has 3493 states and 5667 transitions. [2022-07-19 17:59:18,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:18,524 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 5667 transitions. [2022-07-19 17:59:18,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 17:59:18,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:18,525 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] [2022-07-19 17:59:18,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 17:59:18,525 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:18,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:18,526 INFO L85 PathProgramCache]: Analyzing trace with hash 1594203451, now seen corresponding path program 1 times [2022-07-19 17:59:18,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:18,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452158283] [2022-07-19 17:59:18,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:18,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:18,604 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 17:59:18,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:18,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452158283] [2022-07-19 17:59:18,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452158283] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:18,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:18,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:59:18,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353556496] [2022-07-19 17:59:18,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:18,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:59:18,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:18,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:59:18,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:59:18,606 INFO L87 Difference]: Start difference. First operand 3493 states and 5667 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:19,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:19,052 INFO L93 Difference]: Finished difference Result 6911 states and 11267 transitions. [2022-07-19 17:59:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:59:19,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-19 17:59:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:19,074 INFO L225 Difference]: With dead ends: 6911 [2022-07-19 17:59:19,074 INFO L226 Difference]: Without dead ends: 4911 [2022-07-19 17:59:19,080 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 17:59:19,081 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 112 mSDsluCounter, 180 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 434 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 17:59:19,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 434 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:59:19,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4911 states. [2022-07-19 17:59:19,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4911 to 4909. [2022-07-19 17:59:19,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4909 states, 4908 states have (on average 1.6187856560717195) internal successors, (7945), 4908 states have internal predecessors, (7945), 0 states have call successors, (0), 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 17:59:19,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4909 states to 4909 states and 7945 transitions. [2022-07-19 17:59:19,532 INFO L78 Accepts]: Start accepts. Automaton has 4909 states and 7945 transitions. Word has length 59 [2022-07-19 17:59:19,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:19,533 INFO L495 AbstractCegarLoop]: Abstraction has 4909 states and 7945 transitions. [2022-07-19 17:59:19,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:19,533 INFO L276 IsEmpty]: Start isEmpty. Operand 4909 states and 7945 transitions. [2022-07-19 17:59:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 17:59:19,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:19,534 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] [2022-07-19 17:59:19,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 17:59:19,537 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:19,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:19,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1620263222, now seen corresponding path program 1 times [2022-07-19 17:59:19,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:19,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130467575] [2022-07-19 17:59:19,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:19,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:19,597 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 17:59:19,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:19,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130467575] [2022-07-19 17:59:19,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130467575] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:19,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:19,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 17:59:19,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848905091] [2022-07-19 17:59:19,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:19,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 17:59:19,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:19,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 17:59:19,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 17:59:19,599 INFO L87 Difference]: Start difference. First operand 4909 states and 7945 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:20,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:20,398 INFO L93 Difference]: Finished difference Result 15138 states and 24625 transitions. [2022-07-19 17:59:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 17:59:20,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-19 17:59:20,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:20,447 INFO L225 Difference]: With dead ends: 15138 [2022-07-19 17:59:20,447 INFO L226 Difference]: Without dead ends: 10357 [2022-07-19 17:59:20,461 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 17:59:20,461 INFO L413 NwaCegarLoop]: 194 mSDtfsCounter, 400 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:59:20,462 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [400 Valid, 565 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:59:20,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10357 states. [2022-07-19 17:59:21,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10357 to 7607. [2022-07-19 17:59:21,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7607 states, 7606 states have (on average 1.6149092821456745) internal successors, (12283), 7606 states have internal predecessors, (12283), 0 states have call successors, (0), 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 17:59:21,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7607 states to 7607 states and 12283 transitions. [2022-07-19 17:59:21,118 INFO L78 Accepts]: Start accepts. Automaton has 7607 states and 12283 transitions. Word has length 59 [2022-07-19 17:59:21,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:21,119 INFO L495 AbstractCegarLoop]: Abstraction has 7607 states and 12283 transitions. [2022-07-19 17:59:21,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:21,119 INFO L276 IsEmpty]: Start isEmpty. Operand 7607 states and 12283 transitions. [2022-07-19 17:59:21,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-19 17:59:21,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:21,120 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] [2022-07-19 17:59:21,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:59:21,120 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:21,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:21,121 INFO L85 PathProgramCache]: Analyzing trace with hash -515214271, now seen corresponding path program 1 times [2022-07-19 17:59:21,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:21,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241827347] [2022-07-19 17:59:21,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:21,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:21,160 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 17:59:21,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:21,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241827347] [2022-07-19 17:59:21,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241827347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:21,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:21,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:59:21,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704831105] [2022-07-19 17:59:21,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:21,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:59:21,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:21,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:59:21,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:59:21,163 INFO L87 Difference]: Start difference. First operand 7607 states and 12283 transitions. Second operand has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:22,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:22,033 INFO L93 Difference]: Finished difference Result 16681 states and 27278 transitions. [2022-07-19 17:59:22,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:59:22,034 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-19 17:59:22,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:22,066 INFO L225 Difference]: With dead ends: 16681 [2022-07-19 17:59:22,066 INFO L226 Difference]: Without dead ends: 11156 [2022-07-19 17:59:22,083 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 17:59:22,084 INFO L413 NwaCegarLoop]: 299 mSDtfsCounter, 122 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 477 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 17:59:22,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 477 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:59:22,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11156 states. [2022-07-19 17:59:22,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11156 to 11154. [2022-07-19 17:59:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11154 states, 11153 states have (on average 1.6192055949072) internal successors, (18059), 11153 states have internal predecessors, (18059), 0 states have call successors, (0), 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 17:59:22,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11154 states to 11154 states and 18059 transitions. [2022-07-19 17:59:22,771 INFO L78 Accepts]: Start accepts. Automaton has 11154 states and 18059 transitions. Word has length 59 [2022-07-19 17:59:22,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:22,771 INFO L495 AbstractCegarLoop]: Abstraction has 11154 states and 18059 transitions. [2022-07-19 17:59:22,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.666666666666668) internal successors, (59), 3 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:22,772 INFO L276 IsEmpty]: Start isEmpty. Operand 11154 states and 18059 transitions. [2022-07-19 17:59:22,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-19 17:59:22,773 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:22,773 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] [2022-07-19 17:59:22,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:59:22,773 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:22,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:22,774 INFO L85 PathProgramCache]: Analyzing trace with hash 482860251, now seen corresponding path program 1 times [2022-07-19 17:59:22,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:22,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395562152] [2022-07-19 17:59:22,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:22,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:22,867 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 17:59:22,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:22,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395562152] [2022-07-19 17:59:22,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395562152] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:22,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:22,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:59:22,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315139219] [2022-07-19 17:59:22,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:22,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:59:22,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:22,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:59:22,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:59:22,869 INFO L87 Difference]: Start difference. First operand 11154 states and 18059 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 17:59:23,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:23,794 INFO L93 Difference]: Finished difference Result 22235 states and 36014 transitions. [2022-07-19 17:59:23,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:59:23,795 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-07-19 17:59:23,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:23,828 INFO L225 Difference]: With dead ends: 22235 [2022-07-19 17:59:23,828 INFO L226 Difference]: Without dead ends: 11156 [2022-07-19 17:59:23,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:59:23,848 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 285 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:59:23,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 559 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:59:23,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11156 states. [2022-07-19 17:59:24,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11156 to 11154. [2022-07-19 17:59:24,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11154 states, 11153 states have (on average 1.6079978481126154) internal successors, (17934), 11153 states have internal predecessors, (17934), 0 states have call successors, (0), 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 17:59:24,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11154 states to 11154 states and 17934 transitions. [2022-07-19 17:59:24,669 INFO L78 Accepts]: Start accepts. Automaton has 11154 states and 17934 transitions. Word has length 61 [2022-07-19 17:59:24,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:24,669 INFO L495 AbstractCegarLoop]: Abstraction has 11154 states and 17934 transitions. [2022-07-19 17:59:24,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 17:59:24,670 INFO L276 IsEmpty]: Start isEmpty. Operand 11154 states and 17934 transitions. [2022-07-19 17:59:24,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 17:59:24,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:24,671 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] [2022-07-19 17:59:24,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:59:24,671 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:24,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:24,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1004302872, now seen corresponding path program 1 times [2022-07-19 17:59:24,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:24,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377640682] [2022-07-19 17:59:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:24,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:24,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:24,769 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 17:59:24,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:24,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377640682] [2022-07-19 17:59:24,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377640682] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:24,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:24,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:59:24,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712234650] [2022-07-19 17:59:24,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:24,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:59:24,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:24,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:59:24,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:59:24,772 INFO L87 Difference]: Start difference. First operand 11154 states and 17934 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:26,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:26,318 INFO L93 Difference]: Finished difference Result 31937 states and 51506 transitions. [2022-07-19 17:59:26,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:59:26,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-07-19 17:59:26,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:26,369 INFO L225 Difference]: With dead ends: 31937 [2022-07-19 17:59:26,369 INFO L226 Difference]: Without dead ends: 20858 [2022-07-19 17:59:26,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:59:26,397 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 392 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 567 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:59:26,397 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 567 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:59:26,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20858 states. [2022-07-19 17:59:27,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20858 to 20856. [2022-07-19 17:59:27,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20856 states, 20855 states have (on average 1.596116039319108) internal successors, (33287), 20855 states have internal predecessors, (33287), 0 states have call successors, (0), 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 17:59:27,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20856 states to 20856 states and 33287 transitions. [2022-07-19 17:59:27,783 INFO L78 Accepts]: Start accepts. Automaton has 20856 states and 33287 transitions. Word has length 64 [2022-07-19 17:59:27,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:27,784 INFO L495 AbstractCegarLoop]: Abstraction has 20856 states and 33287 transitions. [2022-07-19 17:59:27,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:27,784 INFO L276 IsEmpty]: Start isEmpty. Operand 20856 states and 33287 transitions. [2022-07-19 17:59:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 17:59:27,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:27,785 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] [2022-07-19 17:59:27,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 17:59:27,786 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:27,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:27,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1070527272, now seen corresponding path program 1 times [2022-07-19 17:59:27,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:27,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431016102] [2022-07-19 17:59:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:27,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:27,868 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 17:59:27,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:27,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431016102] [2022-07-19 17:59:27,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431016102] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:27,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:27,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:59:27,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124470342] [2022-07-19 17:59:27,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:27,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:59:27,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:27,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:59:27,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:59:27,872 INFO L87 Difference]: Start difference. First operand 20856 states and 33287 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:30,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:30,929 INFO L93 Difference]: Finished difference Result 39968 states and 63509 transitions. [2022-07-19 17:59:30,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 17:59:30,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-07-19 17:59:30,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:31,004 INFO L225 Difference]: With dead ends: 39968 [2022-07-19 17:59:31,004 INFO L226 Difference]: Without dead ends: 39966 [2022-07-19 17:59:31,017 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 17:59:31,018 INFO L413 NwaCegarLoop]: 278 mSDtfsCounter, 250 mSDsluCounter, 678 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 956 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:59:31,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 956 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:59:31,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39966 states. [2022-07-19 17:59:32,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39966 to 21580. [2022-07-19 17:59:32,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21580 states, 21579 states have (on average 1.5756985958570833) internal successors, (34002), 21579 states have internal predecessors, (34002), 0 states have call successors, (0), 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 17:59:33,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21580 states to 21580 states and 34002 transitions. [2022-07-19 17:59:33,006 INFO L78 Accepts]: Start accepts. Automaton has 21580 states and 34002 transitions. Word has length 65 [2022-07-19 17:59:33,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:33,006 INFO L495 AbstractCegarLoop]: Abstraction has 21580 states and 34002 transitions. [2022-07-19 17:59:33,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 17:59:33,006 INFO L276 IsEmpty]: Start isEmpty. Operand 21580 states and 34002 transitions. [2022-07-19 17:59:33,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 17:59:33,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:33,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:59:33,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 17:59:33,009 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:33,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:33,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1104420716, now seen corresponding path program 1 times [2022-07-19 17:59:33,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:33,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946109596] [2022-07-19 17:59:33,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:33,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:33,086 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 17:59:33,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:33,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946109596] [2022-07-19 17:59:33,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946109596] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:33,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:33,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:59:33,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330691298] [2022-07-19 17:59:33,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:33,088 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:59:33,088 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:33,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:59:33,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:59:33,089 INFO L87 Difference]: Start difference. First operand 21580 states and 34002 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 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 17:59:36,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:36,517 INFO L93 Difference]: Finished difference Result 52596 states and 83206 transitions. [2022-07-19 17:59:36,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:59:36,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 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 87 [2022-07-19 17:59:36,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:36,592 INFO L225 Difference]: With dead ends: 52596 [2022-07-19 17:59:36,592 INFO L226 Difference]: Without dead ends: 42404 [2022-07-19 17:59:36,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:59:36,622 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 509 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 976 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:59:36,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 976 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:59:36,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42404 states. [2022-07-19 17:59:39,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42404 to 33114. [2022-07-19 17:59:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33114 states, 33113 states have (on average 1.5749101561320327) internal successors, (52150), 33113 states have internal predecessors, (52150), 0 states have call successors, (0), 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 17:59:39,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33114 states to 33114 states and 52150 transitions. [2022-07-19 17:59:39,991 INFO L78 Accepts]: Start accepts. Automaton has 33114 states and 52150 transitions. Word has length 87 [2022-07-19 17:59:39,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:39,992 INFO L495 AbstractCegarLoop]: Abstraction has 33114 states and 52150 transitions. [2022-07-19 17:59:39,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 5 states have internal predecessors, (82), 0 states have call successors, (0), 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 17:59:39,992 INFO L276 IsEmpty]: Start isEmpty. Operand 33114 states and 52150 transitions. [2022-07-19 17:59:39,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 17:59:39,994 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:39,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:59:39,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 17:59:39,994 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:39,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:39,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1225522659, now seen corresponding path program 1 times [2022-07-19 17:59:39,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:39,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240931285] [2022-07-19 17:59:39,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:39,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:40,054 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-19 17:59:40,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:40,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240931285] [2022-07-19 17:59:40,055 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240931285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:40,055 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:40,055 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:59:40,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943689547] [2022-07-19 17:59:40,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:40,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:59:40,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:40,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:59:40,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:59:40,057 INFO L87 Difference]: Start difference. First operand 33114 states and 52150 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 17:59:43,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:43,624 INFO L93 Difference]: Finished difference Result 56648 states and 89642 transitions. [2022-07-19 17:59:43,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:59:43,627 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 87 [2022-07-19 17:59:43,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:43,737 INFO L225 Difference]: With dead ends: 56648 [2022-07-19 17:59:43,737 INFO L226 Difference]: Without dead ends: 46456 [2022-07-19 17:59:43,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:59:43,769 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 517 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 909 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:59:43,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [517 Valid, 909 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:59:43,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46456 states. [2022-07-19 17:59:47,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46456 to 44802. [2022-07-19 17:59:47,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44802 states, 44801 states have (on average 1.5761701747728845) internal successors, (70614), 44801 states have internal predecessors, (70614), 0 states have call successors, (0), 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 17:59:47,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44802 states to 44802 states and 70614 transitions. [2022-07-19 17:59:47,784 INFO L78 Accepts]: Start accepts. Automaton has 44802 states and 70614 transitions. Word has length 87 [2022-07-19 17:59:47,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:47,784 INFO L495 AbstractCegarLoop]: Abstraction has 44802 states and 70614 transitions. [2022-07-19 17:59:47,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 17:59:47,785 INFO L276 IsEmpty]: Start isEmpty. Operand 44802 states and 70614 transitions. [2022-07-19 17:59:47,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 17:59:47,786 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:47,787 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:59:47,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 17:59:47,787 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:47,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:47,787 INFO L85 PathProgramCache]: Analyzing trace with hash 960026915, now seen corresponding path program 1 times [2022-07-19 17:59:47,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:47,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682361323] [2022-07-19 17:59:47,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:47,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:47,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:47,845 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:59:47,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:47,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682361323] [2022-07-19 17:59:47,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682361323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:47,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:47,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 17:59:47,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681439753] [2022-07-19 17:59:47,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:47,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:59:47,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:47,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:59:47,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-19 17:59:47,849 INFO L87 Difference]: Start difference. First operand 44802 states and 70614 transitions. Second operand has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 17:59:51,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:59:51,985 INFO L93 Difference]: Finished difference Result 63518 states and 100702 transitions. [2022-07-19 17:59:51,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 17:59:51,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2022-07-19 17:59:51,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:59:52,097 INFO L225 Difference]: With dead ends: 63518 [2022-07-19 17:59:52,097 INFO L226 Difference]: Without dead ends: 53096 [2022-07-19 17:59:52,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:59:52,129 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 506 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 506 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:59:52,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [506 Valid, 1008 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:59:52,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53096 states. [2022-07-19 17:59:56,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53096 to 51442. [2022-07-19 17:59:56,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51442 states, 51441 states have (on average 1.5791683676444859) internal successors, (81234), 51441 states have internal predecessors, (81234), 0 states have call successors, (0), 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 17:59:56,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51442 states to 51442 states and 81234 transitions. [2022-07-19 17:59:56,623 INFO L78 Accepts]: Start accepts. Automaton has 51442 states and 81234 transitions. Word has length 87 [2022-07-19 17:59:56,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:59:56,624 INFO L495 AbstractCegarLoop]: Abstraction has 51442 states and 81234 transitions. [2022-07-19 17:59:56,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.4) internal successors, (87), 5 states have internal predecessors, (87), 0 states have call successors, (0), 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 17:59:56,624 INFO L276 IsEmpty]: Start isEmpty. Operand 51442 states and 81234 transitions. [2022-07-19 17:59:56,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 17:59:56,626 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:59:56,626 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:59:56,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 17:59:56,626 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:59:56,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:59:56,627 INFO L85 PathProgramCache]: Analyzing trace with hash -1600537049, now seen corresponding path program 1 times [2022-07-19 17:59:56,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:59:56,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579027986] [2022-07-19 17:59:56,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:59:56,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:59:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:59:56,677 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:59:56,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:59:56,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579027986] [2022-07-19 17:59:56,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579027986] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:59:56,678 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:59:56,678 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 17:59:56,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332500504] [2022-07-19 17:59:56,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:59:56,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:59:56,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:59:56,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:59:56,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 17:59:56,680 INFO L87 Difference]: Start difference. First operand 51442 states and 81234 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 18:00:03,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:00:03,745 INFO L93 Difference]: Finished difference Result 113249 states and 179766 transitions. [2022-07-19 18:00:03,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 18:00:03,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2022-07-19 18:00:03,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:00:03,929 INFO L225 Difference]: With dead ends: 113249 [2022-07-19 18:00:03,930 INFO L226 Difference]: Without dead ends: 82689 [2022-07-19 18:00:03,987 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 18:00:03,988 INFO L413 NwaCegarLoop]: 196 mSDtfsCounter, 103 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:00:03,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 372 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:00:04,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82689 states.