./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-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 0d2234696348c57e259060be7fd705b6cb557422b7cc5a74e51b2a22fa3392bc --- Real Ultimate output --- This is Ultimate 0.2.2-839c364b5d67a0f615c82cb70ab247790648d4a9-839c364 [2021-12-14 15:17:03,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-14 15:17:03,280 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-14 15:17:03,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-14 15:17:03,331 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-14 15:17:03,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-14 15:17:03,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-14 15:17:03,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-14 15:17:03,340 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-14 15:17:03,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-14 15:17:03,345 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-14 15:17:03,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-14 15:17:03,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-14 15:17:03,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-14 15:17:03,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-14 15:17:03,352 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-14 15:17:03,353 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-14 15:17:03,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-14 15:17:03,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-14 15:17:03,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-14 15:17:03,360 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-14 15:17:03,360 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-14 15:17:03,361 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-14 15:17:03,362 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-14 15:17:03,365 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-14 15:17:03,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-14 15:17:03,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-14 15:17:03,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-14 15:17:03,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-14 15:17:03,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-14 15:17:03,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-14 15:17:03,368 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-14 15:17:03,369 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-14 15:17:03,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-14 15:17:03,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-14 15:17:03,370 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-14 15:17:03,371 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-14 15:17:03,371 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-14 15:17:03,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-14 15:17:03,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-14 15:17:03,372 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-14 15:17:03,373 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-14 15:17:03,402 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-14 15:17:03,405 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-14 15:17:03,406 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-14 15:17:03,406 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-14 15:17:03,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-14 15:17:03,406 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-14 15:17:03,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-14 15:17:03,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-14 15:17:03,407 INFO L138 SettingsManager]: * Use SBE=true [2021-12-14 15:17:03,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-14 15:17:03,408 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-14 15:17:03,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-14 15:17:03,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-14 15:17:03,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-14 15:17:03,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-14 15:17:03,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-14 15:17:03,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-14 15:17:03,409 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-14 15:17:03,409 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-14 15:17:03,409 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-14 15:17:03,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-14 15:17:03,410 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-14 15:17:03,410 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-14 15:17:03,410 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-14 15:17:03,410 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:17:03,410 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-14 15:17:03,411 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-14 15:17:03,411 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-14 15:17:03,411 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-14 15:17:03,411 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-14 15:17:03,411 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-14 15:17:03,411 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-14 15:17:03,412 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-14 15:17:03,412 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-14 15:17:03,412 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d2234696348c57e259060be7fd705b6cb557422b7cc5a74e51b2a22fa3392bc [2021-12-14 15:17:03,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-14 15:17:03,626 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-14 15:17:03,628 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-14 15:17:03,629 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-14 15:17:03,629 INFO L275 PluginConnector]: CDTParser initialized [2021-12-14 15:17:03,630 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-14 15:17:03,678 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8a9feeb9/335a8b77c020487bb215775e26ad3d93/FLAGa47677db4 [2021-12-14 15:17:04,023 INFO L306 CDTParser]: Found 1 translation units. [2021-12-14 15:17:04,024 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-14 15:17:04,033 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8a9feeb9/335a8b77c020487bb215775e26ad3d93/FLAGa47677db4 [2021-12-14 15:17:04,406 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8a9feeb9/335a8b77c020487bb215775e26ad3d93 [2021-12-14 15:17:04,408 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-14 15:17:04,409 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-14 15:17:04,411 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-14 15:17:04,411 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-14 15:17:04,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-14 15:17:04,413 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:17:04" (1/1) ... [2021-12-14 15:17:04,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f5f1599 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:17:04, skipping insertion in model container [2021-12-14 15:17:04,415 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 03:17:04" (1/1) ... [2021-12-14 15:17:04,419 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-14 15:17:04,455 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-14 15:17:04,608 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[5817,5830] [2021-12-14 15:17:04,625 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[8470,8483] [2021-12-14 15:17:04,637 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11277,11290] [2021-12-14 15:17:04,656 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[13832,13845] [2021-12-14 15:17:04,666 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16838,16851] [2021-12-14 15:17:04,680 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[19408,19421] [2021-12-14 15:17:04,693 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[22168,22181] [2021-12-14 15:17:04,727 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:17:04,744 INFO L203 MainTranslator]: Completed pre-run [2021-12-14 15:17:04,776 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[5817,5830] [2021-12-14 15:17:04,792 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[8470,8483] [2021-12-14 15:17:04,805 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[11277,11290] [2021-12-14 15:17:04,814 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[13832,13845] [2021-12-14 15:17:04,825 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[16838,16851] [2021-12-14 15:17:04,834 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[19408,19421] [2021-12-14 15:17:04,841 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_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[22168,22181] [2021-12-14 15:17:04,859 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-14 15:17:04,873 INFO L208 MainTranslator]: Completed translation [2021-12-14 15:17:04,874 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:17:04 WrapperNode [2021-12-14 15:17:04,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-14 15:17:04,876 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-14 15:17:04,876 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-14 15:17:04,876 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-14 15:17:04,881 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:17:04" (1/1) ... [2021-12-14 15:17:04,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:17:04" (1/1) ... [2021-12-14 15:17:04,947 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1242 [2021-12-14 15:17:04,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-14 15:17:04,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-14 15:17:04,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-14 15:17:04,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-14 15:17:04,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:17:04" (1/1) ... [2021-12-14 15:17:04,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:17:04" (1/1) ... [2021-12-14 15:17:04,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:17:04" (1/1) ... [2021-12-14 15:17:04,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:17:04" (1/1) ... [2021-12-14 15:17:04,972 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:17:04" (1/1) ... [2021-12-14 15:17:04,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:17:04" (1/1) ... [2021-12-14 15:17:04,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:17:04" (1/1) ... [2021-12-14 15:17:04,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-14 15:17:04,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-14 15:17:04,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-14 15:17:04,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-14 15:17:04,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:17:04" (1/1) ... [2021-12-14 15:17:05,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-14 15:17:05,008 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:17:05,029 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) [2021-12-14 15:17:05,047 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 [2021-12-14 15:17:05,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-14 15:17:05,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-14 15:17:05,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-14 15:17:05,058 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-14 15:17:05,158 INFO L236 CfgBuilder]: Building ICFG [2021-12-14 15:17:05,159 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-14 15:17:05,786 INFO L277 CfgBuilder]: Performing block encoding [2021-12-14 15:17:05,799 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-14 15:17:05,800 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-14 15:17:05,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:17:05 BoogieIcfgContainer [2021-12-14 15:17:05,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-14 15:17:05,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-14 15:17:05,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-14 15:17:05,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-14 15:17:05,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 03:17:04" (1/3) ... [2021-12-14 15:17:05,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bcdb7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:17:05, skipping insertion in model container [2021-12-14 15:17:05,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 03:17:04" (2/3) ... [2021-12-14 15:17:05,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bcdb7c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 03:17:05, skipping insertion in model container [2021-12-14 15:17:05,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 03:17:05" (3/3) ... [2021-12-14 15:17:05,809 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-14 15:17:05,813 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-14 15:17:05,813 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-12-14 15:17:05,846 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-14 15:17:05,851 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-14 15:17:05,852 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-14 15:17:05,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 266 states, 258 states have (on average 1.8294573643410852) internal successors, (472), 265 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:05,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-14 15:17:05,877 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:05,878 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:05,878 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:05,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:05,890 INFO L85 PathProgramCache]: Analyzing trace with hash -102713619, now seen corresponding path program 1 times [2021-12-14 15:17:05,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:05,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432769688] [2021-12-14 15:17:05,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:05,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:06,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:06,183 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:06,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432769688] [2021-12-14 15:17:06,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432769688] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:06,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:06,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:17:06,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105258986] [2021-12-14 15:17:06,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:06,190 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:17:06,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:06,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:17:06,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:17:06,217 INFO L87 Difference]: Start difference. First operand has 266 states, 258 states have (on average 1.8294573643410852) internal successors, (472), 265 states have internal predecessors, (472), 0 states have call successors, (0), 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 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:06,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:06,439 INFO L93 Difference]: Finished difference Result 343 states and 586 transitions. [2021-12-14 15:17:06,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:17:06,441 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-12-14 15:17:06,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:06,451 INFO L225 Difference]: With dead ends: 343 [2021-12-14 15:17:06,451 INFO L226 Difference]: Without dead ends: 193 [2021-12-14 15:17:06,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:17:06,460 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 928 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:06,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 249 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:17:06,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2021-12-14 15:17:06,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2021-12-14 15:17:06,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 186 states have (on average 1.2795698924731183) internal successors, (238), 192 states have internal predecessors, (238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:06,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 238 transitions. [2021-12-14 15:17:06,511 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 238 transitions. Word has length 47 [2021-12-14 15:17:06,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:06,511 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 238 transitions. [2021-12-14 15:17:06,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:06,512 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 238 transitions. [2021-12-14 15:17:06,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-14 15:17:06,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:06,517 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:06,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-14 15:17:06,517 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:06,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:06,520 INFO L85 PathProgramCache]: Analyzing trace with hash 1933719334, now seen corresponding path program 1 times [2021-12-14 15:17:06,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:06,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427286767] [2021-12-14 15:17:06,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:06,521 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:06,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:06,609 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:06,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427286767] [2021-12-14 15:17:06,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427286767] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:06,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:06,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:17:06,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004652027] [2021-12-14 15:17:06,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:06,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:17:06,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:06,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:17:06,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:17:06,616 INFO L87 Difference]: Start difference. First operand 193 states and 238 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:06,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:06,771 INFO L93 Difference]: Finished difference Result 279 states and 353 transitions. [2021-12-14 15:17:06,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:17:06,771 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-12-14 15:17:06,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:06,772 INFO L225 Difference]: With dead ends: 279 [2021-12-14 15:17:06,772 INFO L226 Difference]: Without dead ends: 177 [2021-12-14 15:17:06,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:17:06,774 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 592 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:06,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 139 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:17:06,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-14 15:17:06,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2021-12-14 15:17:06,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 170 states have (on average 1.2882352941176471) internal successors, (219), 176 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:06,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 219 transitions. [2021-12-14 15:17:06,781 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 219 transitions. Word has length 47 [2021-12-14 15:17:06,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:06,781 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 219 transitions. [2021-12-14 15:17:06,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:06,782 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 219 transitions. [2021-12-14 15:17:06,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-14 15:17:06,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:06,783 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:06,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-14 15:17:06,783 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:06,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:06,783 INFO L85 PathProgramCache]: Analyzing trace with hash 458596476, now seen corresponding path program 1 times [2021-12-14 15:17:06,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:06,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411489307] [2021-12-14 15:17:06,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:06,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:06,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:06,833 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:06,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411489307] [2021-12-14 15:17:06,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411489307] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:06,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:06,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-14 15:17:06,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591892463] [2021-12-14 15:17:06,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:06,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:17:06,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:06,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:17:06,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:17:06,835 INFO L87 Difference]: Start difference. First operand 177 states and 219 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:06,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:06,917 INFO L93 Difference]: Finished difference Result 255 states and 323 transitions. [2021-12-14 15:17:06,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:17:06,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2021-12-14 15:17:06,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:06,919 INFO L225 Difference]: With dead ends: 255 [2021-12-14 15:17:06,919 INFO L226 Difference]: Without dead ends: 155 [2021-12-14 15:17:06,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-14 15:17:06,923 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 542 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:06,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 121 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:17:06,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2021-12-14 15:17:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 155. [2021-12-14 15:17:06,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 148 states have (on average 1.2972972972972974) internal successors, (192), 154 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:06,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 192 transitions. [2021-12-14 15:17:06,943 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 192 transitions. Word has length 47 [2021-12-14 15:17:06,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:06,943 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 192 transitions. [2021-12-14 15:17:06,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:06,943 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 192 transitions. [2021-12-14 15:17:06,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 15:17:06,946 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:06,946 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:06,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-14 15:17:06,946 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:06,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:06,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1498085814, now seen corresponding path program 1 times [2021-12-14 15:17:06,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:06,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767227844] [2021-12-14 15:17:06,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:06,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:06,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:07,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:07,054 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:07,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767227844] [2021-12-14 15:17:07,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767227844] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:07,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:07,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:17:07,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611589597] [2021-12-14 15:17:07,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:07,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:17:07,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:07,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:17:07,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:17:07,058 INFO L87 Difference]: Start difference. First operand 155 states and 192 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:07,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:07,505 INFO L93 Difference]: Finished difference Result 330 states and 433 transitions. [2021-12-14 15:17:07,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:17:07,506 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-12-14 15:17:07,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:07,507 INFO L225 Difference]: With dead ends: 330 [2021-12-14 15:17:07,507 INFO L226 Difference]: Without dead ends: 325 [2021-12-14 15:17:07,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-14 15:17:07,508 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1200 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1200 SdHoareTripleChecker+Valid, 613 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:07,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1200 Valid, 613 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:17:07,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2021-12-14 15:17:07,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 155. [2021-12-14 15:17:07,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 148 states have (on average 1.2905405405405406) internal successors, (191), 154 states have internal predecessors, (191), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:07,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 191 transitions. [2021-12-14 15:17:07,519 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 191 transitions. Word has length 48 [2021-12-14 15:17:07,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:07,519 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 191 transitions. [2021-12-14 15:17:07,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:07,520 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 191 transitions. [2021-12-14 15:17:07,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 15:17:07,520 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:07,520 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:07,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-14 15:17:07,521 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:07,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:07,521 INFO L85 PathProgramCache]: Analyzing trace with hash 267052195, now seen corresponding path program 1 times [2021-12-14 15:17:07,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:07,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394574038] [2021-12-14 15:17:07,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:07,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:07,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:07,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:07,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:07,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394574038] [2021-12-14 15:17:07,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394574038] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:07,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:07,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:17:07,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932303860] [2021-12-14 15:17:07,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:07,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:17:07,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:07,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:17:07,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:17:07,632 INFO L87 Difference]: Start difference. First operand 155 states and 191 transitions. Second operand has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:08,033 INFO L93 Difference]: Finished difference Result 389 states and 517 transitions. [2021-12-14 15:17:08,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-14 15:17:08,034 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-12-14 15:17:08,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:08,035 INFO L225 Difference]: With dead ends: 389 [2021-12-14 15:17:08,035 INFO L226 Difference]: Without dead ends: 329 [2021-12-14 15:17:08,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-14 15:17:08,036 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 1037 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:08,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 823 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:17:08,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-12-14 15:17:08,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 155. [2021-12-14 15:17:08,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 148 states have (on average 1.2837837837837838) internal successors, (190), 154 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:08,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 190 transitions. [2021-12-14 15:17:08,042 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 190 transitions. Word has length 48 [2021-12-14 15:17:08,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:08,043 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 190 transitions. [2021-12-14 15:17:08,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.333333333333333) internal successors, (48), 8 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:08,043 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 190 transitions. [2021-12-14 15:17:08,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-14 15:17:08,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:08,044 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:08,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-14 15:17:08,044 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:08,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:08,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1788008380, now seen corresponding path program 1 times [2021-12-14 15:17:08,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:08,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173994846] [2021-12-14 15:17:08,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:08,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:08,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:08,123 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:08,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173994846] [2021-12-14 15:17:08,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173994846] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:08,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:08,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-14 15:17:08,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752543547] [2021-12-14 15:17:08,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:08,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-14 15:17:08,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:08,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-14 15:17:08,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-14 15:17:08,129 INFO L87 Difference]: Start difference. First operand 155 states and 190 transitions. Second operand has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:08,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:08,337 INFO L93 Difference]: Finished difference Result 310 states and 390 transitions. [2021-12-14 15:17:08,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-14 15:17:08,337 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 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 48 [2021-12-14 15:17:08,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:08,338 INFO L225 Difference]: With dead ends: 310 [2021-12-14 15:17:08,338 INFO L226 Difference]: Without dead ends: 227 [2021-12-14 15:17:08,339 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-12-14 15:17:08,339 INFO L933 BasicCegarLoop]: 111 mSDtfsCounter, 1171 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1171 SdHoareTripleChecker+Valid, 302 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:08,340 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1171 Valid, 302 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:17:08,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-12-14 15:17:08,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 155. [2021-12-14 15:17:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 148 states have (on average 1.277027027027027) internal successors, (189), 154 states have internal predecessors, (189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:08,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 189 transitions. [2021-12-14 15:17:08,346 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 189 transitions. Word has length 48 [2021-12-14 15:17:08,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:08,346 INFO L470 AbstractCegarLoop]: Abstraction has 155 states and 189 transitions. [2021-12-14 15:17:08,346 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.0) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:08,347 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 189 transitions. [2021-12-14 15:17:08,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 15:17:08,347 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:08,347 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:08,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-14 15:17:08,347 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:08,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1932349207, now seen corresponding path program 1 times [2021-12-14 15:17:08,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:08,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064268202] [2021-12-14 15:17:08,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:08,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:08,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:08,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:08,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:08,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064268202] [2021-12-14 15:17:08,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064268202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:08,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:08,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-14 15:17:08,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556219570] [2021-12-14 15:17:08,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:08,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 15:17:08,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:08,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 15:17:08,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:17:08,759 INFO L87 Difference]: Start difference. First operand 155 states and 189 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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) [2021-12-14 15:17:10,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:10,023 INFO L93 Difference]: Finished difference Result 402 states and 505 transitions. [2021-12-14 15:17:10,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 15:17:10,023 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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 [2021-12-14 15:17:10,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:10,026 INFO L225 Difference]: With dead ends: 402 [2021-12-14 15:17:10,026 INFO L226 Difference]: Without dead ends: 398 [2021-12-14 15:17:10,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=237, Invalid=1023, Unknown=0, NotChecked=0, Total=1260 [2021-12-14 15:17:10,027 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 1384 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1384 SdHoareTripleChecker+Valid, 2460 SdHoareTripleChecker+Invalid, 1385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:10,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1384 Valid, 2460 Invalid, 1385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:17:10,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-12-14 15:17:10,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 165. [2021-12-14 15:17:10,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 158 states have (on average 1.2911392405063291) internal successors, (204), 164 states have internal predecessors, (204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 204 transitions. [2021-12-14 15:17:10,040 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 204 transitions. Word has length 50 [2021-12-14 15:17:10,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:10,040 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 204 transitions. [2021-12-14 15:17:10,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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) [2021-12-14 15:17:10,040 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 204 transitions. [2021-12-14 15:17:10,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 15:17:10,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:10,041 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:10,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-14 15:17:10,042 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:10,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:10,043 INFO L85 PathProgramCache]: Analyzing trace with hash 1779763646, now seen corresponding path program 1 times [2021-12-14 15:17:10,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:10,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489667233] [2021-12-14 15:17:10,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:10,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:10,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:10,479 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:10,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489667233] [2021-12-14 15:17:10,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489667233] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:10,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:10,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-14 15:17:10,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718253020] [2021-12-14 15:17:10,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:10,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 15:17:10,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:10,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 15:17:10,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:17:10,489 INFO L87 Difference]: Start difference. First operand 165 states and 204 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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) [2021-12-14 15:17:11,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:11,687 INFO L93 Difference]: Finished difference Result 438 states and 562 transitions. [2021-12-14 15:17:11,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-14 15:17:11,687 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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 [2021-12-14 15:17:11,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:11,690 INFO L225 Difference]: With dead ends: 438 [2021-12-14 15:17:11,690 INFO L226 Difference]: Without dead ends: 391 [2021-12-14 15:17:11,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=238, Invalid=884, Unknown=0, NotChecked=0, Total=1122 [2021-12-14 15:17:11,692 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 1232 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 1047 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 2210 SdHoareTripleChecker+Invalid, 1120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:11,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1232 Valid, 2210 Invalid, 1120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1047 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-14 15:17:11,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2021-12-14 15:17:11,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 171. [2021-12-14 15:17:11,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 164 states have (on average 1.2926829268292683) internal successors, (212), 170 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:11,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 212 transitions. [2021-12-14 15:17:11,709 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 212 transitions. Word has length 50 [2021-12-14 15:17:11,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:11,709 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 212 transitions. [2021-12-14 15:17:11,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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) [2021-12-14 15:17:11,710 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 212 transitions. [2021-12-14 15:17:11,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 15:17:11,710 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:11,710 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:11,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-14 15:17:11,711 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:11,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:11,711 INFO L85 PathProgramCache]: Analyzing trace with hash 1793833253, now seen corresponding path program 1 times [2021-12-14 15:17:11,711 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:11,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576149876] [2021-12-14 15:17:11,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:11,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:11,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:12,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:12,076 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:12,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576149876] [2021-12-14 15:17:12,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576149876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:12,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:12,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-14 15:17:12,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831039041] [2021-12-14 15:17:12,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:12,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-14 15:17:12,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:12,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-14 15:17:12,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:17:12,078 INFO L87 Difference]: Start difference. First operand 171 states and 212 transitions. Second operand has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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) [2021-12-14 15:17:13,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:13,586 INFO L93 Difference]: Finished difference Result 555 states and 742 transitions. [2021-12-14 15:17:13,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-14 15:17:13,587 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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 [2021-12-14 15:17:13,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:13,589 INFO L225 Difference]: With dead ends: 555 [2021-12-14 15:17:13,589 INFO L226 Difference]: Without dead ends: 549 [2021-12-14 15:17:13,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2021-12-14 15:17:13,590 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 2103 mSDsluCounter, 2522 mSDsCounter, 0 mSdLazyCounter, 1239 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 1326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:13,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2103 Valid, 2704 Invalid, 1326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1239 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-14 15:17:13,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2021-12-14 15:17:13,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 171. [2021-12-14 15:17:13,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 164 states have (on average 1.2865853658536586) internal successors, (211), 170 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:13,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 211 transitions. [2021-12-14 15:17:13,600 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 211 transitions. Word has length 50 [2021-12-14 15:17:13,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:13,601 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 211 transitions. [2021-12-14 15:17:13,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 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) [2021-12-14 15:17:13,601 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 211 transitions. [2021-12-14 15:17:13,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-14 15:17:13,602 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:13,602 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:13,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-14 15:17:13,602 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:13,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:13,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1827600366, now seen corresponding path program 1 times [2021-12-14 15:17:13,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:13,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47523626] [2021-12-14 15:17:13,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:13,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:13,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:13,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47523626] [2021-12-14 15:17:13,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47523626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:13,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:13,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:17:13,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467481276] [2021-12-14 15:17:13,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:13,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:17:13,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:13,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:17:13,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:17:13,820 INFO L87 Difference]: Start difference. First operand 171 states and 211 transitions. Second operand has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 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) [2021-12-14 15:17:14,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:14,352 INFO L93 Difference]: Finished difference Result 378 states and 502 transitions. [2021-12-14 15:17:14,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 15:17:14,352 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 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 [2021-12-14 15:17:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:14,353 INFO L225 Difference]: With dead ends: 378 [2021-12-14 15:17:14,353 INFO L226 Difference]: Without dead ends: 324 [2021-12-14 15:17:14,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2021-12-14 15:17:14,354 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 1173 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 1666 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:14,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1173 Valid, 1666 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:17:14,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-12-14 15:17:14,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 160. [2021-12-14 15:17:14,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 154 states have (on average 1.2922077922077921) internal successors, (199), 159 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:14,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 199 transitions. [2021-12-14 15:17:14,365 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 199 transitions. Word has length 50 [2021-12-14 15:17:14,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:14,365 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 199 transitions. [2021-12-14 15:17:14,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.166666666666667) internal successors, (50), 12 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) [2021-12-14 15:17:14,365 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 199 transitions. [2021-12-14 15:17:14,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 15:17:14,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:14,366 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:14,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-14 15:17:14,366 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:14,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:14,367 INFO L85 PathProgramCache]: Analyzing trace with hash -767196360, now seen corresponding path program 1 times [2021-12-14 15:17:14,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:14,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883123945] [2021-12-14 15:17:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:14,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:14,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:14,442 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:14,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883123945] [2021-12-14 15:17:14,442 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883123945] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:14,442 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:14,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:17:14,443 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435033139] [2021-12-14 15:17:14,443 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:14,443 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:17:14,443 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:14,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:17:14,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:17:14,444 INFO L87 Difference]: Start difference. First operand 160 states and 199 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:14,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:14,717 INFO L93 Difference]: Finished difference Result 239 states and 299 transitions. [2021-12-14 15:17:14,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-14 15:17:14,717 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-12-14 15:17:14,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:14,718 INFO L225 Difference]: With dead ends: 239 [2021-12-14 15:17:14,718 INFO L226 Difference]: Without dead ends: 232 [2021-12-14 15:17:14,718 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:17:14,719 INFO L933 BasicCegarLoop]: 113 mSDtfsCounter, 942 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:14,719 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 471 Invalid, 363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:17:14,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-12-14 15:17:14,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 160. [2021-12-14 15:17:14,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 154 states have (on average 1.2792207792207793) internal successors, (197), 159 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:14,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 197 transitions. [2021-12-14 15:17:14,729 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 197 transitions. Word has length 51 [2021-12-14 15:17:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:14,730 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 197 transitions. [2021-12-14 15:17:14,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:14,730 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 197 transitions. [2021-12-14 15:17:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 15:17:14,730 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:14,730 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:14,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-14 15:17:14,731 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:14,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:14,731 INFO L85 PathProgramCache]: Analyzing trace with hash 1195663953, now seen corresponding path program 1 times [2021-12-14 15:17:14,731 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:14,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456094404] [2021-12-14 15:17:14,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:14,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:14,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:14,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:14,835 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:14,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456094404] [2021-12-14 15:17:14,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456094404] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:14,836 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:14,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-14 15:17:14,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066369653] [2021-12-14 15:17:14,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:14,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 15:17:14,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:14,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 15:17:14,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:17:14,837 INFO L87 Difference]: Start difference. First operand 160 states and 197 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:15,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:15,512 INFO L93 Difference]: Finished difference Result 449 states and 601 transitions. [2021-12-14 15:17:15,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-14 15:17:15,512 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-12-14 15:17:15,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:15,513 INFO L225 Difference]: With dead ends: 449 [2021-12-14 15:17:15,513 INFO L226 Difference]: Without dead ends: 388 [2021-12-14 15:17:15,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=216, Invalid=596, Unknown=0, NotChecked=0, Total=812 [2021-12-14 15:17:15,514 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 999 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 999 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:15,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [999 Valid, 1030 Invalid, 802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:17:15,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2021-12-14 15:17:15,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 160. [2021-12-14 15:17:15,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 154 states have (on average 1.2662337662337662) internal successors, (195), 159 states have internal predecessors, (195), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:15,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 195 transitions. [2021-12-14 15:17:15,525 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 195 transitions. Word has length 51 [2021-12-14 15:17:15,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:15,525 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 195 transitions. [2021-12-14 15:17:15,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:15,526 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 195 transitions. [2021-12-14 15:17:15,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 15:17:15,526 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:15,526 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:15,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-14 15:17:15,526 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:15,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:15,527 INFO L85 PathProgramCache]: Analyzing trace with hash 72941877, now seen corresponding path program 1 times [2021-12-14 15:17:15,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:15,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453674957] [2021-12-14 15:17:15,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:15,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:15,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:15,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:15,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453674957] [2021-12-14 15:17:15,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453674957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:15,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:15,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:17:15,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996626330] [2021-12-14 15:17:15,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:15,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:17:15,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:15,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:17:15,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:17:15,682 INFO L87 Difference]: Start difference. First operand 160 states and 195 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:16,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:16,206 INFO L93 Difference]: Finished difference Result 432 states and 578 transitions. [2021-12-14 15:17:16,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:17:16,206 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-12-14 15:17:16,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:16,208 INFO L225 Difference]: With dead ends: 432 [2021-12-14 15:17:16,208 INFO L226 Difference]: Without dead ends: 412 [2021-12-14 15:17:16,208 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-12-14 15:17:16,209 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 1012 mSDsluCounter, 1789 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:16,209 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1012 Valid, 2198 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:17:16,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2021-12-14 15:17:16,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 134. [2021-12-14 15:17:16,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 130 states have (on average 1.2692307692307692) internal successors, (165), 133 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:16,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 165 transitions. [2021-12-14 15:17:16,220 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 165 transitions. Word has length 51 [2021-12-14 15:17:16,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:16,220 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 165 transitions. [2021-12-14 15:17:16,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:16,220 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 165 transitions. [2021-12-14 15:17:16,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 15:17:16,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:16,221 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:16,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-14 15:17:16,221 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:16,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:16,221 INFO L85 PathProgramCache]: Analyzing trace with hash -314877430, now seen corresponding path program 1 times [2021-12-14 15:17:16,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:16,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295171714] [2021-12-14 15:17:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:16,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:16,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:16,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:16,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:16,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295171714] [2021-12-14 15:17:16,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295171714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:16,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:16,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 15:17:16,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412892130] [2021-12-14 15:17:16,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:16,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:17:16,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:16,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:17:16,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:17:16,337 INFO L87 Difference]: Start difference. First operand 134 states and 165 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:17,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:17,197 INFO L93 Difference]: Finished difference Result 548 states and 749 transitions. [2021-12-14 15:17:17,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-14 15:17:17,197 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-12-14 15:17:17,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:17,199 INFO L225 Difference]: With dead ends: 548 [2021-12-14 15:17:17,199 INFO L226 Difference]: Without dead ends: 541 [2021-12-14 15:17:17,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 265 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=297, Invalid=825, Unknown=0, NotChecked=0, Total=1122 [2021-12-14 15:17:17,200 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 2194 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2194 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:17,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2194 Valid, 771 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-14 15:17:17,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2021-12-14 15:17:17,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 134. [2021-12-14 15:17:17,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 130 states have (on average 1.2615384615384615) internal successors, (164), 133 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:17,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 164 transitions. [2021-12-14 15:17:17,230 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 164 transitions. Word has length 51 [2021-12-14 15:17:17,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:17,230 INFO L470 AbstractCegarLoop]: Abstraction has 134 states and 164 transitions. [2021-12-14 15:17:17,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 11 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:17,230 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 164 transitions. [2021-12-14 15:17:17,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-14 15:17:17,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:17,231 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:17,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-14 15:17:17,231 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:17,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:17,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1266894549, now seen corresponding path program 1 times [2021-12-14 15:17:17,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:17,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215950085] [2021-12-14 15:17:17,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:17,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:17,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:17,473 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:17,473 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215950085] [2021-12-14 15:17:17,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215950085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:17,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:17,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-14 15:17:17,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808098740] [2021-12-14 15:17:17,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:17,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-14 15:17:17,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:17,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-14 15:17:17,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-14 15:17:17,474 INFO L87 Difference]: Start difference. First operand 134 states and 164 transitions. Second operand has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:18,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:18,200 INFO L93 Difference]: Finished difference Result 393 states and 511 transitions. [2021-12-14 15:17:18,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-14 15:17:18,203 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-12-14 15:17:18,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:18,204 INFO L225 Difference]: With dead ends: 393 [2021-12-14 15:17:18,205 INFO L226 Difference]: Without dead ends: 346 [2021-12-14 15:17:18,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=568, Unknown=0, NotChecked=0, Total=756 [2021-12-14 15:17:18,205 INFO L933 BasicCegarLoop]: 351 mSDtfsCounter, 862 mSDsluCounter, 1814 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 862 SdHoareTripleChecker+Valid, 2165 SdHoareTripleChecker+Invalid, 728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:18,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [862 Valid, 2165 Invalid, 728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-14 15:17:18,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2021-12-14 15:17:18,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 128. [2021-12-14 15:17:18,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 125 states have (on average 1.248) internal successors, (156), 127 states have internal predecessors, (156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:18,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 156 transitions. [2021-12-14 15:17:18,220 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 156 transitions. Word has length 51 [2021-12-14 15:17:18,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:18,220 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 156 transitions. [2021-12-14 15:17:18,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.4) internal successors, (51), 15 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:18,220 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 156 transitions. [2021-12-14 15:17:18,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-14 15:17:18,221 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:18,221 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:18,221 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-14 15:17:18,221 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:18,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:18,222 INFO L85 PathProgramCache]: Analyzing trace with hash 966049747, now seen corresponding path program 1 times [2021-12-14 15:17:18,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:18,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864882588] [2021-12-14 15:17:18,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:18,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:18,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:18,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:18,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:18,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864882588] [2021-12-14 15:17:18,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864882588] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:18,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:18,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-14 15:17:18,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503493435] [2021-12-14 15:17:18,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:18,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-14 15:17:18,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:18,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-14 15:17:18,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:17:18,300 INFO L87 Difference]: Start difference. First operand 128 states and 156 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 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) [2021-12-14 15:17:18,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:18,565 INFO L93 Difference]: Finished difference Result 209 states and 259 transitions. [2021-12-14 15:17:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-14 15:17:18,565 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 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 [2021-12-14 15:17:18,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:18,572 INFO L225 Difference]: With dead ends: 209 [2021-12-14 15:17:18,572 INFO L226 Difference]: Without dead ends: 202 [2021-12-14 15:17:18,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=241, Unknown=0, NotChecked=0, Total=342 [2021-12-14 15:17:18,574 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 595 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 595 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:18,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 595 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:17:18,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-12-14 15:17:18,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 124. [2021-12-14 15:17:18,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.2479338842975207) internal successors, (151), 123 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:18,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 151 transitions. [2021-12-14 15:17:18,592 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 151 transitions. Word has length 52 [2021-12-14 15:17:18,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:18,592 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 151 transitions. [2021-12-14 15:17:18,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 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) [2021-12-14 15:17:18,592 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 151 transitions. [2021-12-14 15:17:18,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-14 15:17:18,593 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:18,593 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:18,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-14 15:17:18,593 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:18,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:18,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1837589620, now seen corresponding path program 1 times [2021-12-14 15:17:18,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:18,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959154466] [2021-12-14 15:17:18,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:18,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:18,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:18,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:18,892 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:18,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959154466] [2021-12-14 15:17:18,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959154466] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:18,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:18,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-14 15:17:18,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774431573] [2021-12-14 15:17:18,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:18,893 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-14 15:17:18,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:18,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-14 15:17:18,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-14 15:17:18,894 INFO L87 Difference]: Start difference. First operand 124 states and 151 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:19,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:19,901 INFO L93 Difference]: Finished difference Result 438 states and 576 transitions. [2021-12-14 15:17:19,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-14 15:17:19,901 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-12-14 15:17:19,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:19,902 INFO L225 Difference]: With dead ends: 438 [2021-12-14 15:17:19,902 INFO L226 Difference]: Without dead ends: 432 [2021-12-14 15:17:19,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=192, Invalid=800, Unknown=0, NotChecked=0, Total=992 [2021-12-14 15:17:19,903 INFO L933 BasicCegarLoop]: 320 mSDtfsCounter, 1118 mSDsluCounter, 2672 mSDsCounter, 0 mSdLazyCounter, 1319 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 2992 SdHoareTripleChecker+Invalid, 1364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 1319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:19,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1118 Valid, 2992 Invalid, 1364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 1319 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-14 15:17:19,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2021-12-14 15:17:19,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 135. [2021-12-14 15:17:19,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 132 states have (on average 1.25) internal successors, (165), 134 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:19,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 165 transitions. [2021-12-14 15:17:19,920 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 165 transitions. Word has length 53 [2021-12-14 15:17:19,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:19,920 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 165 transitions. [2021-12-14 15:17:19,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:19,920 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 165 transitions. [2021-12-14 15:17:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-14 15:17:19,920 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:19,921 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:19,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-14 15:17:19,921 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:19,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:19,921 INFO L85 PathProgramCache]: Analyzing trace with hash 202849221, now seen corresponding path program 1 times [2021-12-14 15:17:19,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:19,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206999470] [2021-12-14 15:17:19,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:19,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:20,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:20,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:20,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206999470] [2021-12-14 15:17:20,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206999470] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:20,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:20,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-14 15:17:20,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910255505] [2021-12-14 15:17:20,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:20,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-14 15:17:20,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:20,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-14 15:17:20,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-14 15:17:20,106 INFO L87 Difference]: Start difference. First operand 135 states and 165 transitions. Second operand has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:20,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:20,582 INFO L93 Difference]: Finished difference Result 384 states and 521 transitions. [2021-12-14 15:17:20,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-14 15:17:20,582 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2021-12-14 15:17:20,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:20,583 INFO L225 Difference]: With dead ends: 384 [2021-12-14 15:17:20,584 INFO L226 Difference]: Without dead ends: 366 [2021-12-14 15:17:20,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-12-14 15:17:20,584 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 1300 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:20,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1300 Valid, 731 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-14 15:17:20,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2021-12-14 15:17:20,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 117. [2021-12-14 15:17:20,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.2608695652173914) internal successors, (145), 116 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:20,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 145 transitions. [2021-12-14 15:17:20,600 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 145 transitions. Word has length 53 [2021-12-14 15:17:20,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:20,600 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 145 transitions. [2021-12-14 15:17:20,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.818181818181818) internal successors, (53), 11 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:20,601 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 145 transitions. [2021-12-14 15:17:20,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-14 15:17:20,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:20,601 INFO L514 BasicCegarLoop]: 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] [2021-12-14 15:17:20,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-14 15:17:20,601 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:20,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:20,602 INFO L85 PathProgramCache]: Analyzing trace with hash 576756188, now seen corresponding path program 1 times [2021-12-14 15:17:20,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:20,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184081928] [2021-12-14 15:17:20,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:20,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:20,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:20,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:20,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184081928] [2021-12-14 15:17:20,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184081928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:20,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:20,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-14 15:17:20,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113981565] [2021-12-14 15:17:20,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:20,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-14 15:17:20,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:20,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-14 15:17:20,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-14 15:17:20,775 INFO L87 Difference]: Start difference. First operand 117 states and 145 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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) [2021-12-14 15:17:21,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:21,212 INFO L93 Difference]: Finished difference Result 273 states and 367 transitions. [2021-12-14 15:17:21,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-14 15:17:21,212 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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 [2021-12-14 15:17:21,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:21,213 INFO L225 Difference]: With dead ends: 273 [2021-12-14 15:17:21,213 INFO L226 Difference]: Without dead ends: 267 [2021-12-14 15:17:21,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-12-14 15:17:21,214 INFO L933 BasicCegarLoop]: 285 mSDtfsCounter, 488 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 402 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:21,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 1470 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 402 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-14 15:17:21,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2021-12-14 15:17:21,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 100. [2021-12-14 15:17:21,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.2626262626262625) internal successors, (125), 99 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:21,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2021-12-14 15:17:21,231 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 54 [2021-12-14 15:17:21,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:21,231 INFO L470 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2021-12-14 15:17:21,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 12 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) [2021-12-14 15:17:21,232 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2021-12-14 15:17:21,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-14 15:17:21,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:21,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:17:21,233 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-14 15:17:21,233 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:21,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:21,233 INFO L85 PathProgramCache]: Analyzing trace with hash 415256315, now seen corresponding path program 1 times [2021-12-14 15:17:21,233 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:21,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091353192] [2021-12-14 15:17:21,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:21,234 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:21,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:21,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:21,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:21,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091353192] [2021-12-14 15:17:21,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091353192] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:21,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:21,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:17:21,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325759510] [2021-12-14 15:17:21,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:21,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:17:21,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:21,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:17:21,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:17:21,269 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:21,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:21,374 INFO L93 Difference]: Finished difference Result 358 states and 509 transitions. [2021-12-14 15:17:21,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-14 15:17:21,375 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-12-14 15:17:21,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:21,376 INFO L225 Difference]: With dead ends: 358 [2021-12-14 15:17:21,376 INFO L226 Difference]: Without dead ends: 315 [2021-12-14 15:17:21,376 INFO L932 BasicCegarLoop]: 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 [2021-12-14 15:17:21,377 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 485 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:21,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 499 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:17:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-14 15:17:21,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 141. [2021-12-14 15:17:21,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 1.3285714285714285) internal successors, (186), 140 states have internal predecessors, (186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:21,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 186 transitions. [2021-12-14 15:17:21,406 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 186 transitions. Word has length 71 [2021-12-14 15:17:21,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:21,407 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 186 transitions. [2021-12-14 15:17:21,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:21,407 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 186 transitions. [2021-12-14 15:17:21,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 15:17:21,407 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:21,407 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:17:21,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-14 15:17:21,408 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:21,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:21,411 INFO L85 PathProgramCache]: Analyzing trace with hash -237734748, now seen corresponding path program 1 times [2021-12-14 15:17:21,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:21,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136430740] [2021-12-14 15:17:21,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:21,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:21,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:21,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:21,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136430740] [2021-12-14 15:17:21,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136430740] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:21,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:21,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:17:21,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87740732] [2021-12-14 15:17:21,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:21,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:17:21,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:21,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:17:21,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:17:21,450 INFO L87 Difference]: Start difference. First operand 141 states and 186 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:21,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:21,561 INFO L93 Difference]: Finished difference Result 436 states and 623 transitions. [2021-12-14 15:17:21,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:17:21,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-12-14 15:17:21,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:21,563 INFO L225 Difference]: With dead ends: 436 [2021-12-14 15:17:21,563 INFO L226 Difference]: Without dead ends: 352 [2021-12-14 15:17:21,563 INFO L932 BasicCegarLoop]: 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 [2021-12-14 15:17:21,564 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 288 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:21,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 433 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:17:21,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352 states. [2021-12-14 15:17:21,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352 to 223. [2021-12-14 15:17:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.3918918918918919) internal successors, (309), 222 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 309 transitions. [2021-12-14 15:17:21,611 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 309 transitions. Word has length 73 [2021-12-14 15:17:21,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:21,611 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 309 transitions. [2021-12-14 15:17:21,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:21,612 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 309 transitions. [2021-12-14 15:17:21,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 15:17:21,612 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:21,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:17:21,612 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-14 15:17:21,613 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:21,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:21,613 INFO L85 PathProgramCache]: Analyzing trace with hash -871401261, now seen corresponding path program 1 times [2021-12-14 15:17:21,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:21,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136980290] [2021-12-14 15:17:21,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:21,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:21,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:21,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:21,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:21,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136980290] [2021-12-14 15:17:21,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136980290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:21,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:21,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:17:21,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387067523] [2021-12-14 15:17:21,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:21,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:17:21,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:21,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:17:21,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:17:21,640 INFO L87 Difference]: Start difference. First operand 223 states and 309 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:21,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:21,701 INFO L93 Difference]: Finished difference Result 391 states and 558 transitions. [2021-12-14 15:17:21,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:17:21,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-12-14 15:17:21,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:21,703 INFO L225 Difference]: With dead ends: 391 [2021-12-14 15:17:21,703 INFO L226 Difference]: Without dead ends: 225 [2021-12-14 15:17:21,703 INFO L932 BasicCegarLoop]: 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 [2021-12-14 15:17:21,704 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 51 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:21,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 199 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:17:21,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2021-12-14 15:17:21,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 223. [2021-12-14 15:17:21,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 1.382882882882883) internal successors, (307), 222 states have internal predecessors, (307), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:21,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 307 transitions. [2021-12-14 15:17:21,748 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 307 transitions. Word has length 73 [2021-12-14 15:17:21,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:21,748 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 307 transitions. [2021-12-14 15:17:21,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:21,748 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 307 transitions. [2021-12-14 15:17:21,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 15:17:21,749 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:21,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:17:21,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-14 15:17:21,749 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:21,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:21,750 INFO L85 PathProgramCache]: Analyzing trace with hash -937894773, now seen corresponding path program 1 times [2021-12-14 15:17:21,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:21,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977919958] [2021-12-14 15:17:21,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:21,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:21,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:21,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:21,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:21,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977919958] [2021-12-14 15:17:21,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977919958] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:21,797 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:21,797 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:17:21,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349890837] [2021-12-14 15:17:21,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:21,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:17:21,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:21,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:17:21,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:17:21,799 INFO L87 Difference]: Start difference. First operand 223 states and 307 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:21,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:21,895 INFO L93 Difference]: Finished difference Result 529 states and 755 transitions. [2021-12-14 15:17:21,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:17:21,896 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-12-14 15:17:21,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:21,897 INFO L225 Difference]: With dead ends: 529 [2021-12-14 15:17:21,897 INFO L226 Difference]: Without dead ends: 363 [2021-12-14 15:17:21,897 INFO L932 BasicCegarLoop]: 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 [2021-12-14 15:17:21,897 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 66 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:21,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 195 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:17:21,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2021-12-14 15:17:21,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 357. [2021-12-14 15:17:21,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 356 states have (on average 1.3876404494382022) internal successors, (494), 356 states have internal predecessors, (494), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:21,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 494 transitions. [2021-12-14 15:17:21,978 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 494 transitions. Word has length 73 [2021-12-14 15:17:21,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:21,979 INFO L470 AbstractCegarLoop]: Abstraction has 357 states and 494 transitions. [2021-12-14 15:17:21,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:21,979 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 494 transitions. [2021-12-14 15:17:21,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-14 15:17:21,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:21,980 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:17:21,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-14 15:17:21,980 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:21,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:21,980 INFO L85 PathProgramCache]: Analyzing trace with hash -852412764, now seen corresponding path program 1 times [2021-12-14 15:17:21,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:21,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114136271] [2021-12-14 15:17:21,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:21,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:21,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:22,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:22,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114136271] [2021-12-14 15:17:22,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114136271] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:22,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:22,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:17:22,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533838837] [2021-12-14 15:17:22,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:22,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:17:22,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:22,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:17:22,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:17:22,018 INFO L87 Difference]: Start difference. First operand 357 states and 494 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:22,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:22,228 INFO L93 Difference]: Finished difference Result 887 states and 1256 transitions. [2021-12-14 15:17:22,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:17:22,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-12-14 15:17:22,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:22,230 INFO L225 Difference]: With dead ends: 887 [2021-12-14 15:17:22,230 INFO L226 Difference]: Without dead ends: 736 [2021-12-14 15:17:22,230 INFO L932 BasicCegarLoop]: 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 [2021-12-14 15:17:22,231 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 289 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 438 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:22,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [289 Valid, 438 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:17:22,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-12-14 15:17:22,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 581. [2021-12-14 15:17:22,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 580 states have (on average 1.4068965517241379) internal successors, (816), 580 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:22,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 816 transitions. [2021-12-14 15:17:22,367 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 816 transitions. Word has length 73 [2021-12-14 15:17:22,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:22,367 INFO L470 AbstractCegarLoop]: Abstraction has 581 states and 816 transitions. [2021-12-14 15:17:22,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:22,367 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 816 transitions. [2021-12-14 15:17:22,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-14 15:17:22,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:22,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:17:22,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-14 15:17:22,368 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:22,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:22,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1459706699, now seen corresponding path program 1 times [2021-12-14 15:17:22,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:22,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865224890] [2021-12-14 15:17:22,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:22,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:22,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:22,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:22,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865224890] [2021-12-14 15:17:22,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865224890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:22,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:22,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:17:22,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708052015] [2021-12-14 15:17:22,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:22,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:17:22,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:22,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:17:22,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:17:22,407 INFO L87 Difference]: Start difference. First operand 581 states and 816 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:22,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:22,605 INFO L93 Difference]: Finished difference Result 1285 states and 1832 transitions. [2021-12-14 15:17:22,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:17:22,606 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-12-14 15:17:22,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:22,607 INFO L225 Difference]: With dead ends: 1285 [2021-12-14 15:17:22,608 INFO L226 Difference]: Without dead ends: 761 [2021-12-14 15:17:22,608 INFO L932 BasicCegarLoop]: 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 [2021-12-14 15:17:22,608 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 50 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:22,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 278 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:17:22,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-12-14 15:17:22,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 751. [2021-12-14 15:17:22,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 750 states have (on average 1.404) internal successors, (1053), 750 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:22,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 1053 transitions. [2021-12-14 15:17:22,794 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 1053 transitions. Word has length 74 [2021-12-14 15:17:22,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:22,794 INFO L470 AbstractCegarLoop]: Abstraction has 751 states and 1053 transitions. [2021-12-14 15:17:22,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:22,794 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 1053 transitions. [2021-12-14 15:17:22,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-14 15:17:22,795 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:22,795 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:17:22,795 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-14 15:17:22,795 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:22,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:22,795 INFO L85 PathProgramCache]: Analyzing trace with hash 1468955342, now seen corresponding path program 1 times [2021-12-14 15:17:22,796 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:22,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939445951] [2021-12-14 15:17:22,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:22,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:22,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:22,832 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:22,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939445951] [2021-12-14 15:17:22,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939445951] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:22,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:22,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-14 15:17:22,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781849656] [2021-12-14 15:17:22,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:22,833 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-14 15:17:22,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:22,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-14 15:17:22,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-14 15:17:22,834 INFO L87 Difference]: Start difference. First operand 751 states and 1053 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:23,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:23,151 INFO L93 Difference]: Finished difference Result 1362 states and 1927 transitions. [2021-12-14 15:17:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-14 15:17:23,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-12-14 15:17:23,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:23,155 INFO L225 Difference]: With dead ends: 1362 [2021-12-14 15:17:23,155 INFO L226 Difference]: Without dead ends: 1156 [2021-12-14 15:17:23,155 INFO L932 BasicCegarLoop]: 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 [2021-12-14 15:17:23,155 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 286 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:23,156 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 459 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:17:23,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1156 states. [2021-12-14 15:17:23,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1156 to 946. [2021-12-14 15:17:23,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 946 states, 945 states have (on average 1.4095238095238096) internal successors, (1332), 945 states have internal predecessors, (1332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:23,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 946 states to 946 states and 1332 transitions. [2021-12-14 15:17:23,378 INFO L78 Accepts]: Start accepts. Automaton has 946 states and 1332 transitions. Word has length 74 [2021-12-14 15:17:23,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:23,379 INFO L470 AbstractCegarLoop]: Abstraction has 946 states and 1332 transitions. [2021-12-14 15:17:23,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:23,379 INFO L276 IsEmpty]: Start isEmpty. Operand 946 states and 1332 transitions. [2021-12-14 15:17:23,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-14 15:17:23,379 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:23,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:17:23,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-14 15:17:23,380 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:23,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:23,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1631844587, now seen corresponding path program 1 times [2021-12-14 15:17:23,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:23,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679699137] [2021-12-14 15:17:23,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:23,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:23,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:23,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:23,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:23,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679699137] [2021-12-14 15:17:23,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [679699137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:23,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:23,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:17:23,411 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904267011] [2021-12-14 15:17:23,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:23,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:17:23,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:23,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:17:23,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:17:23,412 INFO L87 Difference]: Start difference. First operand 946 states and 1332 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:23,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:23,861 INFO L93 Difference]: Finished difference Result 2616 states and 3685 transitions. [2021-12-14 15:17:23,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:17:23,862 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2021-12-14 15:17:23,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:23,866 INFO L225 Difference]: With dead ends: 2616 [2021-12-14 15:17:23,866 INFO L226 Difference]: Without dead ends: 1727 [2021-12-14 15:17:23,867 INFO L932 BasicCegarLoop]: 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 [2021-12-14 15:17:23,867 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 54 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:23,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 256 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:17:23,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2021-12-14 15:17:24,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 1617. [2021-12-14 15:17:24,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1616 states have (on average 1.3929455445544554) internal successors, (2251), 1616 states have internal predecessors, (2251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:24,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2251 transitions. [2021-12-14 15:17:24,272 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2251 transitions. Word has length 74 [2021-12-14 15:17:24,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:24,273 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2251 transitions. [2021-12-14 15:17:24,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:24,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2251 transitions. [2021-12-14 15:17:24,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-14 15:17:24,273 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:24,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:17:24,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-14 15:17:24,274 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:24,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:24,274 INFO L85 PathProgramCache]: Analyzing trace with hash -536068422, now seen corresponding path program 1 times [2021-12-14 15:17:24,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:24,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906467296] [2021-12-14 15:17:24,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:24,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:24,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:24,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:24,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:24,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906467296] [2021-12-14 15:17:24,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1906467296] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:24,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:24,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:17:24,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127560424] [2021-12-14 15:17:24,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:24,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:17:24,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:24,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:17:24,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:17:24,304 INFO L87 Difference]: Start difference. First operand 1617 states and 2251 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:25,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:25,060 INFO L93 Difference]: Finished difference Result 4521 states and 6253 transitions. [2021-12-14 15:17:25,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:17:25,060 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2021-12-14 15:17:25,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:25,067 INFO L225 Difference]: With dead ends: 4521 [2021-12-14 15:17:25,067 INFO L226 Difference]: Without dead ends: 2961 [2021-12-14 15:17:25,068 INFO L932 BasicCegarLoop]: 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 [2021-12-14 15:17:25,068 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 44 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:25,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 255 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:17:25,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2961 states. [2021-12-14 15:17:25,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2961 to 2743. [2021-12-14 15:17:25,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 2742 states have (on average 1.363238512035011) internal successors, (3738), 2742 states have internal predecessors, (3738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 3738 transitions. [2021-12-14 15:17:25,814 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 3738 transitions. Word has length 75 [2021-12-14 15:17:25,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:25,814 INFO L470 AbstractCegarLoop]: Abstraction has 2743 states and 3738 transitions. [2021-12-14 15:17:25,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:25,814 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 3738 transitions. [2021-12-14 15:17:25,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-14 15:17:25,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:25,815 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:17:25,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-14 15:17:25,815 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:25,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:25,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1852091383, now seen corresponding path program 1 times [2021-12-14 15:17:25,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:25,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1645376895] [2021-12-14 15:17:25,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:25,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:25,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:25,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:25,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1645376895] [2021-12-14 15:17:25,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1645376895] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:25,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:25,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-14 15:17:25,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648736858] [2021-12-14 15:17:25,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:25,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-14 15:17:25,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:25,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-14 15:17:25,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-14 15:17:25,855 INFO L87 Difference]: Start difference. First operand 2743 states and 3738 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:27,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:27,114 INFO L93 Difference]: Finished difference Result 4301 states and 5831 transitions. [2021-12-14 15:17:27,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-14 15:17:27,115 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2021-12-14 15:17:27,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:27,127 INFO L225 Difference]: With dead ends: 4301 [2021-12-14 15:17:27,127 INFO L226 Difference]: Without dead ends: 4299 [2021-12-14 15:17:27,128 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-14 15:17:27,128 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 201 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:27,129 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 658 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:17:27,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4299 states. [2021-12-14 15:17:27,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4299 to 2791. [2021-12-14 15:17:27,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2791 states, 2790 states have (on average 1.349820788530466) internal successors, (3766), 2790 states have internal predecessors, (3766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:27,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3766 transitions. [2021-12-14 15:17:27,892 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3766 transitions. Word has length 76 [2021-12-14 15:17:27,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:27,893 INFO L470 AbstractCegarLoop]: Abstraction has 2791 states and 3766 transitions. [2021-12-14 15:17:27,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:27,893 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3766 transitions. [2021-12-14 15:17:27,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-14 15:17:27,893 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:27,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:17:27,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-14 15:17:27,894 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:27,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:27,895 INFO L85 PathProgramCache]: Analyzing trace with hash -966335138, now seen corresponding path program 1 times [2021-12-14 15:17:27,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:27,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35439831] [2021-12-14 15:17:27,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:27,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:27,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:27,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:27,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35439831] [2021-12-14 15:17:27,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35439831] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-14 15:17:27,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-14 15:17:27,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-14 15:17:27,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98700127] [2021-12-14 15:17:27,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-14 15:17:27,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-14 15:17:27,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:27,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-14 15:17:27,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-14 15:17:27,930 INFO L87 Difference]: Start difference. First operand 2791 states and 3766 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2021-12-14 15:17:28,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-14 15:17:28,967 INFO L93 Difference]: Finished difference Result 6447 states and 8660 transitions. [2021-12-14 15:17:28,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-14 15:17:28,968 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 77 [2021-12-14 15:17:28,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-14 15:17:28,977 INFO L225 Difference]: With dead ends: 6447 [2021-12-14 15:17:28,977 INFO L226 Difference]: Without dead ends: 3713 [2021-12-14 15:17:28,980 INFO L932 BasicCegarLoop]: 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 [2021-12-14 15:17:28,980 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 58 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-14 15:17:28,980 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 257 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-14 15:17:28,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3713 states. [2021-12-14 15:17:29,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3713 to 3407. [2021-12-14 15:17:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3407 states, 3406 states have (on average 1.3206106870229009) internal successors, (4498), 3406 states have internal predecessors, (4498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-14 15:17:29,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3407 states to 3407 states and 4498 transitions. [2021-12-14 15:17:29,885 INFO L78 Accepts]: Start accepts. Automaton has 3407 states and 4498 transitions. Word has length 77 [2021-12-14 15:17:29,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-14 15:17:29,886 INFO L470 AbstractCegarLoop]: Abstraction has 3407 states and 4498 transitions. [2021-12-14 15:17:29,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2021-12-14 15:17:29,886 INFO L276 IsEmpty]: Start isEmpty. Operand 3407 states and 4498 transitions. [2021-12-14 15:17:29,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-14 15:17:29,887 INFO L506 BasicCegarLoop]: Found error trace [2021-12-14 15:17:29,887 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-14 15:17:29,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-14 15:17:29,887 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-14 15:17:29,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-14 15:17:29,888 INFO L85 PathProgramCache]: Analyzing trace with hash 914913403, now seen corresponding path program 1 times [2021-12-14 15:17:29,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-14 15:17:29,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485783596] [2021-12-14 15:17:29,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:29,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-14 15:17:29,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:30,013 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:30,014 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-14 15:17:30,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485783596] [2021-12-14 15:17:30,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485783596] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-14 15:17:30,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187369176] [2021-12-14 15:17:30,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-14 15:17:30,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-14 15:17:30,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-14 15:17:30,015 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-14 15:17:30,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-14 15:17:30,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-14 15:17:30,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-14 15:17:30,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-14 15:17:30,872 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:30,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-14 15:17:31,829 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-14 15:17:31,830 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187369176] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-14 15:17:31,830 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-14 15:17:31,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2021-12-14 15:17:31,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415256645] [2021-12-14 15:17:31,830 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-14 15:17:31,831 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-14 15:17:31,831 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-14 15:17:31,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-14 15:17:31,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-12-14 15:17:31,831 INFO L87 Difference]: Start difference. First operand 3407 states and 4498 transitions. Second operand has 27 states, 27 states have (on average 8.703703703703704) internal successors, (235), 26 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)