./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 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.BOUNDED-6.pals.c.v+lhb-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 8903dcb91a7500453f98b743541ef164d589c2f5828e51ac11fb5ea90b79c3dd --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 12:08:58,632 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 12:08:58,633 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 12:08:58,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 12:08:58,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 12:08:58,687 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 12:08:58,688 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 12:08:58,691 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 12:08:58,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 12:08:58,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 12:08:58,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 12:08:58,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 12:08:58,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 12:08:58,701 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 12:08:58,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 12:08:58,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 12:08:58,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 12:08:58,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 12:08:58,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 12:08:58,715 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 12:08:58,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 12:08:58,717 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 12:08:58,719 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 12:08:58,719 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 12:08:58,725 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 12:08:58,726 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 12:08:58,726 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 12:08:58,727 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 12:08:58,728 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 12:08:58,728 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 12:08:58,729 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 12:08:58,730 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 12:08:58,731 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 12:08:58,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 12:08:58,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 12:08:58,736 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 12:08:58,737 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 12:08:58,737 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 12:08:58,737 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 12:08:58,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 12:08:58,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 12:08:58,740 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-22 12:08:58,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 12:08:58,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 12:08:58,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 12:08:58,762 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 12:08:58,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 12:08:58,763 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 12:08:58,763 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 12:08:58,763 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 12:08:58,763 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 12:08:58,764 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 12:08:58,765 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-22 12:08:58,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 12:08:58,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-22 12:08:58,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 12:08:58,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 12:08:58,765 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 12:08:58,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 12:08:58,766 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-22 12:08:58,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 12:08:58,766 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 12:08:58,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 12:08:58,767 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 12:08:58,767 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 12:08:58,767 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 12:08:58,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:08:58,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 12:08:58,768 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 12:08:58,768 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 12:08:58,768 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 12:08:58,768 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 12:08:58,768 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 12:08:58,769 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 12:08:58,769 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 12:08:58,769 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 12:08:58,769 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8903dcb91a7500453f98b743541ef164d589c2f5828e51ac11fb5ea90b79c3dd [2021-12-22 12:08:59,010 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 12:08:59,033 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 12:08:59,035 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 12:08:59,036 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 12:08:59,037 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 12:08:59,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-22 12:08:59,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92ed4417a/4298dbb270a744a78be73c985785b26f/FLAG0764990e5 [2021-12-22 12:08:59,545 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 12:08:59,549 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-22 12:08:59,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92ed4417a/4298dbb270a744a78be73c985785b26f/FLAG0764990e5 [2021-12-22 12:08:59,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/92ed4417a/4298dbb270a744a78be73c985785b26f [2021-12-22 12:08:59,889 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 12:08:59,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 12:08:59,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 12:08:59,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 12:08:59,898 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 12:08:59,899 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:08:59" (1/1) ... [2021-12-22 12:08:59,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57f0b712 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:08:59, skipping insertion in model container [2021-12-22 12:08:59,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 12:08:59" (1/1) ... [2021-12-22 12:08:59,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 12:08:59,956 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 12:09:00,198 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.BOUNDED-6.pals.c.v+lhb-reducer.c[7543,7556] [2021-12-22 12:09:00,243 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.BOUNDED-6.pals.c.v+lhb-reducer.c[10430,10443] [2021-12-22 12:09:00,249 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.BOUNDED-6.pals.c.v+lhb-reducer.c[11521,11534] [2021-12-22 12:09:00,252 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.BOUNDED-6.pals.c.v+lhb-reducer.c[12127,12140] [2021-12-22 12:09:00,259 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.BOUNDED-6.pals.c.v+lhb-reducer.c[13546,13559] [2021-12-22 12:09:00,262 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.BOUNDED-6.pals.c.v+lhb-reducer.c[14152,14165] [2021-12-22 12:09:00,267 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.BOUNDED-6.pals.c.v+lhb-reducer.c[15123,15136] [2021-12-22 12:09:00,313 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:09:00,323 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 12:09:00,371 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.BOUNDED-6.pals.c.v+lhb-reducer.c[7543,7556] [2021-12-22 12:09:00,381 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.BOUNDED-6.pals.c.v+lhb-reducer.c[10430,10443] [2021-12-22 12:09:00,390 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.BOUNDED-6.pals.c.v+lhb-reducer.c[11521,11534] [2021-12-22 12:09:00,397 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.BOUNDED-6.pals.c.v+lhb-reducer.c[12127,12140] [2021-12-22 12:09:00,402 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.BOUNDED-6.pals.c.v+lhb-reducer.c[13546,13559] [2021-12-22 12:09:00,404 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.BOUNDED-6.pals.c.v+lhb-reducer.c[14152,14165] [2021-12-22 12:09:00,407 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.BOUNDED-6.pals.c.v+lhb-reducer.c[15123,15136] [2021-12-22 12:09:00,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 12:09:00,445 INFO L208 MainTranslator]: Completed translation [2021-12-22 12:09:00,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:00 WrapperNode [2021-12-22 12:09:00,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 12:09:00,447 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 12:09:00,447 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 12:09:00,447 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 12:09:00,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:00" (1/1) ... [2021-12-22 12:09:00,470 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:00" (1/1) ... [2021-12-22 12:09:00,512 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1018 [2021-12-22 12:09:00,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 12:09:00,521 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 12:09:00,521 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 12:09:00,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 12:09:00,529 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:00" (1/1) ... [2021-12-22 12:09:00,532 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:00" (1/1) ... [2021-12-22 12:09:00,535 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:00" (1/1) ... [2021-12-22 12:09:00,535 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:00" (1/1) ... [2021-12-22 12:09:00,548 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:00" (1/1) ... [2021-12-22 12:09:00,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:00" (1/1) ... [2021-12-22 12:09:00,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:00" (1/1) ... [2021-12-22 12:09:00,570 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 12:09:00,571 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 12:09:00,571 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 12:09:00,571 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 12:09:00,572 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:00" (1/1) ... [2021-12-22 12:09:00,578 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 12:09:00,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:09:00,604 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) [2021-12-22 12:09:00,635 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 [2021-12-22 12:09:00,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 12:09:00,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 12:09:00,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 12:09:00,654 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 12:09:00,780 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 12:09:00,781 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 12:09:01,533 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 12:09:01,543 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 12:09:01,544 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-22 12:09:01,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:09:01 BoogieIcfgContainer [2021-12-22 12:09:01,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 12:09:01,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 12:09:01,548 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 12:09:01,551 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 12:09:01,552 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 12:08:59" (1/3) ... [2021-12-22 12:09:01,553 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545c75e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:09:01, skipping insertion in model container [2021-12-22 12:09:01,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 12:09:00" (2/3) ... [2021-12-22 12:09:01,554 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@545c75e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 12:09:01, skipping insertion in model container [2021-12-22 12:09:01,554 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 12:09:01" (3/3) ... [2021-12-22 12:09:01,555 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2021-12-22 12:09:01,560 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 12:09:01,560 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-12-22 12:09:01,617 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 12:09:01,623 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 [2021-12-22 12:09:01,624 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-22 12:09:01,645 INFO L276 IsEmpty]: Start isEmpty. Operand has 207 states, 199 states have (on average 1.8241206030150754) internal successors, (363), 206 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:01,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2021-12-22 12:09:01,668 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:01,669 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] [2021-12-22 12:09:01,670 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:01,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:01,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1485336045, now seen corresponding path program 1 times [2021-12-22 12:09:01,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:01,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513305833] [2021-12-22 12:09:01,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:01,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:02,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:02,045 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:02,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513305833] [2021-12-22 12:09:02,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513305833] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:02,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:02,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:09:02,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021370991] [2021-12-22 12:09:02,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:02,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:09:02,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:02,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:09:02,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:09:02,087 INFO L87 Difference]: Start difference. First operand has 207 states, 199 states have (on average 1.8241206030150754) internal successors, (363), 206 states have internal predecessors, (363), 0 states have call successors, (0), 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) [2021-12-22 12:09:02,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:02,284 INFO L93 Difference]: Finished difference Result 339 states and 570 transitions. [2021-12-22 12:09:02,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:09:02,287 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 [2021-12-22 12:09:02,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:02,295 INFO L225 Difference]: With dead ends: 339 [2021-12-22 12:09:02,296 INFO L226 Difference]: Without dead ends: 175 [2021-12-22 12:09:02,298 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 [2021-12-22 12:09:02,301 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 847 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 847 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:02,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [847 Valid, 224 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:09:02,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-12-22 12:09:02,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-12-22 12:09:02,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 168 states have (on average 1.2857142857142858) internal successors, (216), 174 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:02,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 216 transitions. [2021-12-22 12:09:02,340 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 216 transitions. Word has length 47 [2021-12-22 12:09:02,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:02,341 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 216 transitions. [2021-12-22 12:09:02,341 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) [2021-12-22 12:09:02,341 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 216 transitions. [2021-12-22 12:09:02,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-22 12:09:02,343 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:02,343 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] [2021-12-22 12:09:02,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 12:09:02,344 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:02,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:02,345 INFO L85 PathProgramCache]: Analyzing trace with hash 200422799, now seen corresponding path program 1 times [2021-12-22 12:09:02,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:02,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816649242] [2021-12-22 12:09:02,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:02,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:02,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:02,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:02,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816649242] [2021-12-22 12:09:02,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816649242] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:02,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:02,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:09:02,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190218573] [2021-12-22 12:09:02,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:02,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:09:02,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:02,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:09:02,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:09:02,437 INFO L87 Difference]: Start difference. First operand 175 states and 216 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 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) [2021-12-22 12:09:02,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:02,544 INFO L93 Difference]: Finished difference Result 298 states and 377 transitions. [2021-12-22 12:09:02,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:09:02,544 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 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 [2021-12-22 12:09:02,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:02,546 INFO L225 Difference]: With dead ends: 298 [2021-12-22 12:09:02,546 INFO L226 Difference]: Without dead ends: 162 [2021-12-22 12:09:02,547 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 [2021-12-22 12:09:02,548 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 551 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 551 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:02,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [551 Valid, 131 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:09:02,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2021-12-22 12:09:02,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2021-12-22 12:09:02,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 155 states have (on average 1.2903225806451613) internal successors, (200), 161 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:02,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 200 transitions. [2021-12-22 12:09:02,563 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 200 transitions. Word has length 48 [2021-12-22 12:09:02,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:02,563 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 200 transitions. [2021-12-22 12:09:02,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 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) [2021-12-22 12:09:02,564 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 200 transitions. [2021-12-22 12:09:02,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-22 12:09:02,565 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:02,565 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] [2021-12-22 12:09:02,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 12:09:02,566 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:02,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:02,567 INFO L85 PathProgramCache]: Analyzing trace with hash -2021523794, now seen corresponding path program 1 times [2021-12-22 12:09:02,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:02,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389335606] [2021-12-22 12:09:02,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:02,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:02,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:02,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:02,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389335606] [2021-12-22 12:09:02,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389335606] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:02,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:02,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 12:09:02,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370278116] [2021-12-22 12:09:02,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:02,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:09:02,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:02,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:09:02,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:09:02,631 INFO L87 Difference]: Start difference. First operand 162 states and 200 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:02,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:02,744 INFO L93 Difference]: Finished difference Result 285 states and 360 transitions. [2021-12-22 12:09:02,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:09:02,745 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2021-12-22 12:09:02,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:02,746 INFO L225 Difference]: With dead ends: 285 [2021-12-22 12:09:02,746 INFO L226 Difference]: Without dead ends: 157 [2021-12-22 12:09:02,747 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 [2021-12-22 12:09:02,748 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 513 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 513 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:02,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [513 Valid, 128 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:09:02,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-12-22 12:09:02,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2021-12-22 12:09:02,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 150 states have (on average 1.2866666666666666) internal successors, (193), 156 states have internal predecessors, (193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:02,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 193 transitions. [2021-12-22 12:09:02,761 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 193 transitions. Word has length 49 [2021-12-22 12:09:02,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:02,776 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 193 transitions. [2021-12-22 12:09:02,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:02,776 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 193 transitions. [2021-12-22 12:09:02,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-22 12:09:02,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:02,778 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] [2021-12-22 12:09:02,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 12:09:02,779 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:02,779 INFO L85 PathProgramCache]: Analyzing trace with hash 1243075504, now seen corresponding path program 1 times [2021-12-22 12:09:02,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:02,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601757868] [2021-12-22 12:09:02,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:02,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:02,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:02,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601757868] [2021-12-22 12:09:02,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601757868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:02,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:02,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:09:02,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367257357] [2021-12-22 12:09:02,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:02,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:09:02,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:02,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:09:02,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:09:02,903 INFO L87 Difference]: Start difference. First operand 157 states and 193 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 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) [2021-12-22 12:09:03,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:03,624 INFO L93 Difference]: Finished difference Result 332 states and 431 transitions. [2021-12-22 12:09:03,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:09:03,625 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 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 [2021-12-22 12:09:03,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:03,627 INFO L225 Difference]: With dead ends: 332 [2021-12-22 12:09:03,627 INFO L226 Difference]: Without dead ends: 327 [2021-12-22 12:09:03,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:09:03,629 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 920 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:03,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 607 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 12:09:03,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2021-12-22 12:09:03,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 157. [2021-12-22 12:09:03,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 150 states have (on average 1.28) internal successors, (192), 156 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) [2021-12-22 12:09:03,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 192 transitions. [2021-12-22 12:09:03,687 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 192 transitions. Word has length 50 [2021-12-22 12:09:03,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:03,688 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 192 transitions. [2021-12-22 12:09:03,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 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) [2021-12-22 12:09:03,688 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 192 transitions. [2021-12-22 12:09:03,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-22 12:09:03,694 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:03,707 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] [2021-12-22 12:09:03,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 12:09:03,708 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:03,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:03,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1139694690, now seen corresponding path program 1 times [2021-12-22 12:09:03,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:03,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490230675] [2021-12-22 12:09:03,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:03,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:03,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:03,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:03,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490230675] [2021-12-22 12:09:03,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490230675] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:03,994 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:03,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:09:03,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262121365] [2021-12-22 12:09:04,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:04,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:09:04,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:04,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:09:04,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:09:04,010 INFO L87 Difference]: Start difference. First operand 157 states and 192 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 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) [2021-12-22 12:09:04,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:04,880 INFO L93 Difference]: Finished difference Result 391 states and 514 transitions. [2021-12-22 12:09:04,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 12:09:04,881 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 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 [2021-12-22 12:09:04,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:04,882 INFO L225 Difference]: With dead ends: 391 [2021-12-22 12:09:04,883 INFO L226 Difference]: Without dead ends: 331 [2021-12-22 12:09:04,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:09:04,884 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1041 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1041 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:04,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1041 Valid, 810 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 12:09:04,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-22 12:09:04,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 157. [2021-12-22 12:09:04,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 150 states have (on average 1.2733333333333334) internal successors, (191), 156 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) [2021-12-22 12:09:04,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 191 transitions. [2021-12-22 12:09:04,932 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 191 transitions. Word has length 50 [2021-12-22 12:09:04,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:04,939 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 191 transitions. [2021-12-22 12:09:04,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 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) [2021-12-22 12:09:04,939 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 191 transitions. [2021-12-22 12:09:04,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-22 12:09:04,942 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:04,942 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] [2021-12-22 12:09:04,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-22 12:09:04,942 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:04,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:04,947 INFO L85 PathProgramCache]: Analyzing trace with hash 134088220, now seen corresponding path program 1 times [2021-12-22 12:09:04,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:04,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825625972] [2021-12-22 12:09:04,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:04,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:05,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:05,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:05,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:05,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825625972] [2021-12-22 12:09:05,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825625972] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:05,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:05,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-22 12:09:05,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870216163] [2021-12-22 12:09:05,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:05,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 12:09:05,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:05,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 12:09:05,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:09:05,231 INFO L87 Difference]: Start difference. First operand 157 states and 191 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 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) [2021-12-22 12:09:05,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:05,723 INFO L93 Difference]: Finished difference Result 312 states and 389 transitions. [2021-12-22 12:09:05,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 12:09:05,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 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 [2021-12-22 12:09:05,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:05,727 INFO L225 Difference]: With dead ends: 312 [2021-12-22 12:09:05,727 INFO L226 Difference]: Without dead ends: 229 [2021-12-22 12:09:05,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-12-22 12:09:05,728 INFO L933 BasicCegarLoop]: 112 mSDtfsCounter, 837 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 837 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 297 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:05,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [837 Valid, 428 Invalid, 297 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 12:09:05,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-22 12:09:05,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 157. [2021-12-22 12:09:05,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 150 states have (on average 1.2666666666666666) internal successors, (190), 156 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) [2021-12-22 12:09:05,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2021-12-22 12:09:05,800 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 50 [2021-12-22 12:09:05,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:05,801 INFO L470 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2021-12-22 12:09:05,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 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) [2021-12-22 12:09:05,801 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2021-12-22 12:09:05,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 12:09:05,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:05,802 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] [2021-12-22 12:09:05,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 12:09:05,802 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:05,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:05,803 INFO L85 PathProgramCache]: Analyzing trace with hash -1263855603, now seen corresponding path program 1 times [2021-12-22 12:09:05,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:05,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815896701] [2021-12-22 12:09:05,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:05,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:06,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:06,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:06,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815896701] [2021-12-22 12:09:06,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815896701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:06,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:06,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 12:09:06,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86540904] [2021-12-22 12:09:06,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:06,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 12:09:06,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:06,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 12:09:06,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 12:09:06,182 INFO L87 Difference]: Start difference. First operand 157 states and 190 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 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) [2021-12-22 12:09:06,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:06,887 INFO L93 Difference]: Finished difference Result 292 states and 367 transitions. [2021-12-22 12:09:06,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:09:06,887 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 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 [2021-12-22 12:09:06,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:06,889 INFO L225 Difference]: With dead ends: 292 [2021-12-22 12:09:06,889 INFO L226 Difference]: Without dead ends: 245 [2021-12-22 12:09:06,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-22 12:09:06,890 INFO L933 BasicCegarLoop]: 160 mSDtfsCounter, 1045 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1045 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:06,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1045 Valid, 885 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:09:06,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2021-12-22 12:09:06,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 153. [2021-12-22 12:09:06,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 147 states have (on average 1.2585034013605443) internal successors, (185), 152 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:06,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 185 transitions. [2021-12-22 12:09:06,911 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 185 transitions. Word has length 52 [2021-12-22 12:09:06,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:06,912 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 185 transitions. [2021-12-22 12:09:06,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 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) [2021-12-22 12:09:06,912 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 185 transitions. [2021-12-22 12:09:06,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 12:09:06,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:06,913 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] [2021-12-22 12:09:06,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 12:09:06,913 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:06,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:06,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1250594545, now seen corresponding path program 1 times [2021-12-22 12:09:06,914 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:06,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189133574] [2021-12-22 12:09:06,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:06,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:07,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:07,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:07,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189133574] [2021-12-22 12:09:07,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189133574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:07,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:07,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 12:09:07,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176024368] [2021-12-22 12:09:07,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:07,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 12:09:07,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:07,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 12:09:07,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 12:09:07,183 INFO L87 Difference]: Start difference. First operand 153 states and 185 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 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) [2021-12-22 12:09:07,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:07,748 INFO L93 Difference]: Finished difference Result 294 states and 373 transitions. [2021-12-22 12:09:07,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-22 12:09:07,749 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 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 [2021-12-22 12:09:07,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:07,750 INFO L225 Difference]: With dead ends: 294 [2021-12-22 12:09:07,750 INFO L226 Difference]: Without dead ends: 240 [2021-12-22 12:09:07,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-12-22 12:09:07,752 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 832 mSDsluCounter, 1316 mSDsCounter, 0 mSdLazyCounter, 367 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:07,752 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 1566 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 367 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:09:07,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-12-22 12:09:07,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 142. [2021-12-22 12:09:07,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 137 states have (on average 1.2554744525547445) internal successors, (172), 141 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:07,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 172 transitions. [2021-12-22 12:09:07,775 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 172 transitions. Word has length 52 [2021-12-22 12:09:07,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:07,775 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 172 transitions. [2021-12-22 12:09:07,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 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) [2021-12-22 12:09:07,776 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 172 transitions. [2021-12-22 12:09:07,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-22 12:09:07,776 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:07,777 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] [2021-12-22 12:09:07,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 12:09:07,777 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:07,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:07,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1706910886, now seen corresponding path program 1 times [2021-12-22 12:09:07,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:07,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630305127] [2021-12-22 12:09:07,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:07,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:07,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:08,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:08,060 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:08,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630305127] [2021-12-22 12:09:08,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630305127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:08,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:08,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 12:09:08,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718964897] [2021-12-22 12:09:08,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:08,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 12:09:08,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:08,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 12:09:08,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 12:09:08,064 INFO L87 Difference]: Start difference. First operand 142 states and 172 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 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) [2021-12-22 12:09:08,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:08,732 INFO L93 Difference]: Finished difference Result 334 states and 433 transitions. [2021-12-22 12:09:08,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:09:08,738 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 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 [2021-12-22 12:09:08,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:08,741 INFO L225 Difference]: With dead ends: 334 [2021-12-22 12:09:08,741 INFO L226 Difference]: Without dead ends: 318 [2021-12-22 12:09:08,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-22 12:09:08,745 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 881 mSDsluCounter, 1493 mSDsCounter, 0 mSdLazyCounter, 460 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 1841 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:08,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [881 Valid, 1841 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 460 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 12:09:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-12-22 12:09:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 126. [2021-12-22 12:09:08,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.2520325203252032) internal successors, (154), 125 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:08,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 154 transitions. [2021-12-22 12:09:08,794 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 154 transitions. Word has length 52 [2021-12-22 12:09:08,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:08,795 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 154 transitions. [2021-12-22 12:09:08,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 12 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) [2021-12-22 12:09:08,795 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 154 transitions. [2021-12-22 12:09:08,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-22 12:09:08,796 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:08,796 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] [2021-12-22 12:09:08,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 12:09:08,796 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:08,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash 190692674, now seen corresponding path program 1 times [2021-12-22 12:09:08,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:08,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644961053] [2021-12-22 12:09:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:08,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:08,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:09,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:09,030 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:09,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644961053] [2021-12-22 12:09:09,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644961053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:09,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:09,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 12:09:09,031 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589920161] [2021-12-22 12:09:09,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:09,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 12:09:09,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:09,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 12:09:09,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 12:09:09,032 INFO L87 Difference]: Start difference. First operand 126 states and 154 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) 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) [2021-12-22 12:09:09,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:09,962 INFO L93 Difference]: Finished difference Result 338 states and 439 transitions. [2021-12-22 12:09:09,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 12:09:09,962 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) 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 [2021-12-22 12:09:09,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:09,964 INFO L225 Difference]: With dead ends: 338 [2021-12-22 12:09:09,964 INFO L226 Difference]: Without dead ends: 331 [2021-12-22 12:09:09,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2021-12-22 12:09:09,966 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 2044 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2044 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:09,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2044 Valid, 542 Invalid, 633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 12:09:09,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-22 12:09:09,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 130. [2021-12-22 12:09:09,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 127 states have (on average 1.2440944881889764) internal successors, (158), 129 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:09,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 158 transitions. [2021-12-22 12:09:09,998 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 158 transitions. Word has length 53 [2021-12-22 12:09:09,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:09,999 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 158 transitions. [2021-12-22 12:09:09,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) 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) [2021-12-22 12:09:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 158 transitions. [2021-12-22 12:09:10,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-22 12:09:10,000 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:10,000 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] [2021-12-22 12:09:10,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-22 12:09:10,001 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:10,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:10,001 INFO L85 PathProgramCache]: Analyzing trace with hash 339917441, now seen corresponding path program 1 times [2021-12-22 12:09:10,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:10,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154773876] [2021-12-22 12:09:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:10,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:10,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:10,104 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:10,104 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154773876] [2021-12-22 12:09:10,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154773876] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:10,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:10,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:09:10,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532735431] [2021-12-22 12:09:10,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:10,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:09:10,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:10,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:09:10,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:09:10,106 INFO L87 Difference]: Start difference. First operand 130 states and 158 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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) [2021-12-22 12:09:10,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:10,461 INFO L93 Difference]: Finished difference Result 261 states and 335 transitions. [2021-12-22 12:09:10,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 12:09:10,462 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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 [2021-12-22 12:09:10,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:10,463 INFO L225 Difference]: With dead ends: 261 [2021-12-22 12:09:10,463 INFO L226 Difference]: Without dead ends: 200 [2021-12-22 12:09:10,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=267, Unknown=0, NotChecked=0, Total=380 [2021-12-22 12:09:10,464 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 542 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:10,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 476 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:09:10,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-22 12:09:10,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 130. [2021-12-22 12:09:10,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 127 states have (on average 1.236220472440945) internal successors, (157), 129 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 157 transitions. [2021-12-22 12:09:10,493 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 157 transitions. Word has length 53 [2021-12-22 12:09:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:10,493 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 157 transitions. [2021-12-22 12:09:10,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 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) [2021-12-22 12:09:10,494 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 157 transitions. [2021-12-22 12:09:10,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-22 12:09:10,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:10,494 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] [2021-12-22 12:09:10,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-22 12:09:10,495 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:10,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:10,495 INFO L85 PathProgramCache]: Analyzing trace with hash -746268687, now seen corresponding path program 1 times [2021-12-22 12:09:10,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:10,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605362349] [2021-12-22 12:09:10,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:10,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:10,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:10,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:10,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605362349] [2021-12-22 12:09:10,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605362349] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:10,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:10,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 12:09:10,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806681651] [2021-12-22 12:09:10,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:10,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-22 12:09:10,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:10,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-22 12:09:10,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-22 12:09:10,590 INFO L87 Difference]: Start difference. First operand 130 states and 157 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2021-12-22 12:09:10,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:10,963 INFO L93 Difference]: Finished difference Result 211 states and 259 transitions. [2021-12-22 12:09:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 12:09:10,963 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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 [2021-12-22 12:09:10,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:10,964 INFO L225 Difference]: With dead ends: 211 [2021-12-22 12:09:10,964 INFO L226 Difference]: Without dead ends: 204 [2021-12-22 12:09:10,965 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 [2021-12-22 12:09:10,965 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 322 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:10,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 589 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-22 12:09:10,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-22 12:09:10,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 126. [2021-12-22 12:09:10,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.2357723577235773) internal successors, (152), 125 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:10,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 152 transitions. [2021-12-22 12:09:10,989 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 152 transitions. Word has length 54 [2021-12-22 12:09:10,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:10,989 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 152 transitions. [2021-12-22 12:09:10,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 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) [2021-12-22 12:09:10,989 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 152 transitions. [2021-12-22 12:09:10,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-22 12:09:10,990 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:10,990 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] [2021-12-22 12:09:10,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-22 12:09:10,990 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:10,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:10,991 INFO L85 PathProgramCache]: Analyzing trace with hash -11876974, now seen corresponding path program 1 times [2021-12-22 12:09:10,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:10,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464129771] [2021-12-22 12:09:10,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:10,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:11,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:11,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:11,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464129771] [2021-12-22 12:09:11,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464129771] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:11,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:11,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-22 12:09:11,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504405252] [2021-12-22 12:09:11,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:11,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-22 12:09:11,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:11,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-22 12:09:11,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-22 12:09:11,346 INFO L87 Difference]: Start difference. First operand 126 states and 152 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:12,584 INFO L93 Difference]: Finished difference Result 336 states and 425 transitions. [2021-12-22 12:09:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-22 12:09:12,584 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-12-22 12:09:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:12,586 INFO L225 Difference]: With dead ends: 336 [2021-12-22 12:09:12,586 INFO L226 Difference]: Without dead ends: 328 [2021-12-22 12:09:12,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2021-12-22 12:09:12,587 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 693 mSDsluCounter, 2484 mSDsCounter, 0 mSdLazyCounter, 1183 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 2764 SdHoareTripleChecker+Invalid, 1226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:12,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 2764 Invalid, 1226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1183 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 12:09:12,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2021-12-22 12:09:12,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 131. [2021-12-22 12:09:12,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 128 states have (on average 1.2265625) internal successors, (157), 130 states have internal predecessors, (157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:12,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 157 transitions. [2021-12-22 12:09:12,624 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 157 transitions. Word has length 55 [2021-12-22 12:09:12,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:12,624 INFO L470 AbstractCegarLoop]: Abstraction has 131 states and 157 transitions. [2021-12-22 12:09:12,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:12,624 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 157 transitions. [2021-12-22 12:09:12,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-22 12:09:12,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:12,625 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] [2021-12-22 12:09:12,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-22 12:09:12,626 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:12,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:12,626 INFO L85 PathProgramCache]: Analyzing trace with hash -824240014, now seen corresponding path program 1 times [2021-12-22 12:09:12,627 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:12,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519968680] [2021-12-22 12:09:12,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:12,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:12,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:12,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:12,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:12,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519968680] [2021-12-22 12:09:12,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519968680] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:12,887 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:12,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 12:09:12,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418464136] [2021-12-22 12:09:12,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:12,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 12:09:12,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:12,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 12:09:12,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-22 12:09:12,888 INFO L87 Difference]: Start difference. First operand 131 states and 157 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:13,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:13,501 INFO L93 Difference]: Finished difference Result 296 states and 384 transitions. [2021-12-22 12:09:13,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-22 12:09:13,505 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2021-12-22 12:09:13,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:13,506 INFO L225 Difference]: With dead ends: 296 [2021-12-22 12:09:13,506 INFO L226 Difference]: Without dead ends: 290 [2021-12-22 12:09:13,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-12-22 12:09:13,507 INFO L933 BasicCegarLoop]: 306 mSDtfsCounter, 689 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:13,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 1768 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 12:09:13,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2021-12-22 12:09:13,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 125. [2021-12-22 12:09:13,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 123 states have (on average 1.2276422764227641) internal successors, (151), 124 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) [2021-12-22 12:09:13,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 151 transitions. [2021-12-22 12:09:13,535 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 151 transitions. Word has length 55 [2021-12-22 12:09:13,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:13,535 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 151 transitions. [2021-12-22 12:09:13,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:13,536 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 151 transitions. [2021-12-22 12:09:13,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 12:09:13,536 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:13,536 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] [2021-12-22 12:09:13,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-22 12:09:13,536 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)] === [2021-12-22 12:09:13,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:13,537 INFO L85 PathProgramCache]: Analyzing trace with hash 623432965, now seen corresponding path program 1 times [2021-12-22 12:09:13,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:13,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532703987] [2021-12-22 12:09:13,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:13,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:13,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:13,924 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:13,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532703987] [2021-12-22 12:09:13,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532703987] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:13,925 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:13,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-22 12:09:13,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454898896] [2021-12-22 12:09:13,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:13,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-22 12:09:13,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:13,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-22 12:09:13,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2021-12-22 12:09:13,926 INFO L87 Difference]: Start difference. First operand 125 states and 151 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:14,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:14,895 INFO L93 Difference]: Finished difference Result 254 states and 321 transitions. [2021-12-22 12:09:14,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-22 12:09:14,895 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-12-22 12:09:14,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:14,897 INFO L225 Difference]: With dead ends: 254 [2021-12-22 12:09:14,897 INFO L226 Difference]: Without dead ends: 240 [2021-12-22 12:09:14,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2021-12-22 12:09:14,898 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 916 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 1438 SdHoareTripleChecker+Invalid, 678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:14,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 1438 Invalid, 678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-22 12:09:14,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-12-22 12:09:14,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 120. [2021-12-22 12:09:14,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 118 states have (on average 1.228813559322034) internal successors, (145), 119 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) [2021-12-22 12:09:14,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 145 transitions. [2021-12-22 12:09:14,925 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 145 transitions. Word has length 56 [2021-12-22 12:09:14,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:14,925 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 145 transitions. [2021-12-22 12:09:14,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:14,925 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 145 transitions. [2021-12-22 12:09:14,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-22 12:09:14,926 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:14,926 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] [2021-12-22 12:09:14,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-22 12:09:14,926 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:14,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:14,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1511387265, now seen corresponding path program 1 times [2021-12-22 12:09:14,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:14,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168376723] [2021-12-22 12:09:14,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:14,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:14,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:15,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:15,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168376723] [2021-12-22 12:09:15,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168376723] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:15,137 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:15,137 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 12:09:15,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494639665] [2021-12-22 12:09:15,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:15,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 12:09:15,138 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:15,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 12:09:15,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-22 12:09:15,139 INFO L87 Difference]: Start difference. First operand 120 states and 145 transitions. Second operand has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:15,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:15,675 INFO L93 Difference]: Finished difference Result 368 states and 496 transitions. [2021-12-22 12:09:15,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-22 12:09:15,676 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-12-22 12:09:15,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:15,677 INFO L225 Difference]: With dead ends: 368 [2021-12-22 12:09:15,677 INFO L226 Difference]: Without dead ends: 350 [2021-12-22 12:09:15,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-12-22 12:09:15,679 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 1253 mSDsluCounter, 507 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1253 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:15,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1253 Valid, 677 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:09:15,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-22 12:09:15,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 102. [2021-12-22 12:09:15,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 101 states have (on average 1.2475247524752475) internal successors, (126), 101 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 126 transitions. [2021-12-22 12:09:15,707 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 126 transitions. Word has length 56 [2021-12-22 12:09:15,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:15,707 INFO L470 AbstractCegarLoop]: Abstraction has 102 states and 126 transitions. [2021-12-22 12:09:15,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:15,707 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 126 transitions. [2021-12-22 12:09:15,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-22 12:09:15,708 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:15,708 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] [2021-12-22 12:09:15,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-22 12:09:15,708 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:15,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:15,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2042294308, now seen corresponding path program 1 times [2021-12-22 12:09:15,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:15,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226061088] [2021-12-22 12:09:15,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:15,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:15,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:15,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226061088] [2021-12-22 12:09:15,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226061088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:15,764 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:15,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:09:15,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [768983709] [2021-12-22 12:09:15,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:15,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:09:15,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:15,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:09:15,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:09:15,766 INFO L87 Difference]: Start difference. First operand 102 states and 126 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) [2021-12-22 12:09:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:16,072 INFO L93 Difference]: Finished difference Result 360 states and 504 transitions. [2021-12-22 12:09:16,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-22 12:09:16,072 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 [2021-12-22 12:09:16,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:16,074 INFO L225 Difference]: With dead ends: 360 [2021-12-22 12:09:16,074 INFO L226 Difference]: Without dead ends: 317 [2021-12-22 12:09:16,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-22 12:09:16,075 INFO L933 BasicCegarLoop]: 130 mSDtfsCounter, 479 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 599 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:16,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 599 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 12:09:16,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-12-22 12:09:16,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 143. [2021-12-22 12:09:16,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.3098591549295775) internal successors, (186), 142 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) [2021-12-22 12:09:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 186 transitions. [2021-12-22 12:09:16,130 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 186 transitions. Word has length 73 [2021-12-22 12:09:16,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:16,130 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 186 transitions. [2021-12-22 12:09:16,131 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) [2021-12-22 12:09:16,131 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 186 transitions. [2021-12-22 12:09:16,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-22 12:09:16,131 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:16,131 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] [2021-12-22 12:09:16,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-22 12:09:16,132 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:16,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:16,132 INFO L85 PathProgramCache]: Analyzing trace with hash -786943772, now seen corresponding path program 1 times [2021-12-22 12:09:16,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:16,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611963986] [2021-12-22 12:09:16,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:16,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:16,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:16,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:16,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:16,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611963986] [2021-12-22 12:09:16,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611963986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:16,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:16,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:09:16,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54128778] [2021-12-22 12:09:16,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:16,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:09:16,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:16,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:09:16,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:09:16,188 INFO L87 Difference]: Start difference. First operand 143 states and 186 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-12-22 12:09:16,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:16,398 INFO L93 Difference]: Finished difference Result 438 states and 616 transitions. [2021-12-22 12:09:16,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:09:16,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 [2021-12-22 12:09:16,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:16,400 INFO L225 Difference]: With dead ends: 438 [2021-12-22 12:09:16,400 INFO L226 Difference]: Without dead ends: 354 [2021-12-22 12:09:16,400 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 [2021-12-22 12:09:16,401 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 281 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:16,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [281 Valid, 419 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:09:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2021-12-22 12:09:16,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 225. [2021-12-22 12:09:16,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 224 states have (on average 1.3705357142857142) internal successors, (307), 224 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) [2021-12-22 12:09:16,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 307 transitions. [2021-12-22 12:09:16,500 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 307 transitions. Word has length 75 [2021-12-22 12:09:16,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:16,501 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 307 transitions. [2021-12-22 12:09:16,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-12-22 12:09:16,501 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 307 transitions. [2021-12-22 12:09:16,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-22 12:09:16,501 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:16,502 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] [2021-12-22 12:09:16,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-22 12:09:16,502 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-22 12:09:16,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:16,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1322322984, now seen corresponding path program 1 times [2021-12-22 12:09:16,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:16,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086347573] [2021-12-22 12:09:16,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:16,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:16,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:16,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:16,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086347573] [2021-12-22 12:09:16,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086347573] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:16,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:16,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:09:16,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908880868] [2021-12-22 12:09:16,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:16,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:09:16,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:16,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:09:16,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:09:16,552 INFO L87 Difference]: Start difference. First operand 225 states and 307 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-12-22 12:09:16,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:16,779 INFO L93 Difference]: Finished difference Result 520 states and 737 transitions. [2021-12-22 12:09:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:09:16,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 [2021-12-22 12:09:16,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:16,781 INFO L225 Difference]: With dead ends: 520 [2021-12-22 12:09:16,782 INFO L226 Difference]: Without dead ends: 436 [2021-12-22 12:09:16,782 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 [2021-12-22 12:09:16,782 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 291 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 430 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 [2021-12-22 12:09:16,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [291 Valid, 430 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:09:16,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2021-12-22 12:09:16,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 348. [2021-12-22 12:09:16,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.4063400576368876) internal successors, (488), 347 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:16,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 488 transitions. [2021-12-22 12:09:16,948 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 488 transitions. Word has length 75 [2021-12-22 12:09:16,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:16,948 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 488 transitions. [2021-12-22 12:09:16,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-12-22 12:09:16,948 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 488 transitions. [2021-12-22 12:09:16,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-22 12:09:16,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:16,949 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] [2021-12-22 12:09:16,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-22 12:09:16,949 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)] === [2021-12-22 12:09:16,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:16,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1446907099, now seen corresponding path program 1 times [2021-12-22 12:09:16,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:16,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144101627] [2021-12-22 12:09:16,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:16,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:16,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:16,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:16,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144101627] [2021-12-22 12:09:16,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144101627] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:16,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:16,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:09:16,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549897875] [2021-12-22 12:09:16,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:16,983 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:09:16,983 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:16,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:09:16,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:09:16,984 INFO L87 Difference]: Start difference. First operand 348 states and 488 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) [2021-12-22 12:09:17,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:17,159 INFO L93 Difference]: Finished difference Result 639 states and 914 transitions. [2021-12-22 12:09:17,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:09:17,160 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 [2021-12-22 12:09:17,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:17,161 INFO L225 Difference]: With dead ends: 639 [2021-12-22 12:09:17,161 INFO L226 Difference]: Without dead ends: 350 [2021-12-22 12:09:17,162 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 [2021-12-22 12:09:17,162 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 50 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 200 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 [2021-12-22 12:09:17,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 200 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:09:17,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2021-12-22 12:09:17,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 348. [2021-12-22 12:09:17,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 347 states have (on average 1.3948126801152738) internal successors, (484), 347 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:17,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 484 transitions. [2021-12-22 12:09:17,320 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 484 transitions. Word has length 75 [2021-12-22 12:09:17,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:17,320 INFO L470 AbstractCegarLoop]: Abstraction has 348 states and 484 transitions. [2021-12-22 12:09:17,320 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) [2021-12-22 12:09:17,320 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 484 transitions. [2021-12-22 12:09:17,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-22 12:09:17,321 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:17,321 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] [2021-12-22 12:09:17,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-22 12:09:17,322 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)] === [2021-12-22 12:09:17,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:17,322 INFO L85 PathProgramCache]: Analyzing trace with hash 2078767204, now seen corresponding path program 1 times [2021-12-22 12:09:17,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:17,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477618970] [2021-12-22 12:09:17,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:17,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:17,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:17,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:17,350 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:17,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477618970] [2021-12-22 12:09:17,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477618970] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:17,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:17,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:09:17,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696551112] [2021-12-22 12:09:17,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:17,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:09:17,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:17,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:09:17,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:09:17,352 INFO L87 Difference]: Start difference. First operand 348 states and 484 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) [2021-12-22 12:09:17,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:17,681 INFO L93 Difference]: Finished difference Result 881 states and 1251 transitions. [2021-12-22 12:09:17,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:09:17,681 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 [2021-12-22 12:09:17,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:17,683 INFO L225 Difference]: With dead ends: 881 [2021-12-22 12:09:17,683 INFO L226 Difference]: Without dead ends: 592 [2021-12-22 12:09:17,684 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 [2021-12-22 12:09:17,685 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 50 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:17,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 283 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:09:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2021-12-22 12:09:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 590. [2021-12-22 12:09:17,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 590 states, 589 states have (on average 1.3837011884550086) internal successors, (815), 589 states have internal predecessors, (815), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:17,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 815 transitions. [2021-12-22 12:09:17,962 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 815 transitions. Word has length 75 [2021-12-22 12:09:17,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:17,962 INFO L470 AbstractCegarLoop]: Abstraction has 590 states and 815 transitions. [2021-12-22 12:09:17,962 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) [2021-12-22 12:09:17,962 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 815 transitions. [2021-12-22 12:09:17,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-22 12:09:17,963 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:17,963 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] [2021-12-22 12:09:17,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-22 12:09:17,964 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)] === [2021-12-22 12:09:17,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:17,964 INFO L85 PathProgramCache]: Analyzing trace with hash 95104542, now seen corresponding path program 1 times [2021-12-22 12:09:17,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:17,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976047698] [2021-12-22 12:09:17,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:17,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:17,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:18,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:18,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976047698] [2021-12-22 12:09:18,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976047698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:18,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:18,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 12:09:18,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226033513] [2021-12-22 12:09:18,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:18,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 12:09:18,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:18,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 12:09:18,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 12:09:18,015 INFO L87 Difference]: Start difference. First operand 590 states and 815 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-12-22 12:09:18,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:18,512 INFO L93 Difference]: Finished difference Result 1051 states and 1467 transitions. [2021-12-22 12:09:18,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 12:09:18,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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 [2021-12-22 12:09:18,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:18,517 INFO L225 Difference]: With dead ends: 1051 [2021-12-22 12:09:18,517 INFO L226 Difference]: Without dead ends: 898 [2021-12-22 12:09:18,518 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 [2021-12-22 12:09:18,519 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 283 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 461 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:18,519 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [283 Valid, 461 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:09:18,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2021-12-22 12:09:18,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 741. [2021-12-22 12:09:18,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 740 states have (on average 1.3905405405405404) internal successors, (1029), 740 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:18,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1029 transitions. [2021-12-22 12:09:18,819 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1029 transitions. Word has length 75 [2021-12-22 12:09:18,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:18,819 INFO L470 AbstractCegarLoop]: Abstraction has 741 states and 1029 transitions. [2021-12-22 12:09:18,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 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) [2021-12-22 12:09:18,820 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1029 transitions. [2021-12-22 12:09:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-22 12:09:18,820 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:18,821 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] [2021-12-22 12:09:18,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-22 12:09:18,821 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)] === [2021-12-22 12:09:18,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:18,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1963614716, now seen corresponding path program 1 times [2021-12-22 12:09:18,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:18,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915427282] [2021-12-22 12:09:18,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:18,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:18,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:18,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:18,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915427282] [2021-12-22 12:09:18,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915427282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:18,854 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:18,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:09:18,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886565191] [2021-12-22 12:09:18,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:18,854 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:09:18,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:18,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:09:18,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:09:18,855 INFO L87 Difference]: Start difference. First operand 741 states and 1029 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2021-12-22 12:09:19,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:19,343 INFO L93 Difference]: Finished difference Result 1862 states and 2600 transitions. [2021-12-22 12:09:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:09:19,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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 [2021-12-22 12:09:19,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:19,346 INFO L225 Difference]: With dead ends: 1862 [2021-12-22 12:09:19,347 INFO L226 Difference]: Without dead ends: 1180 [2021-12-22 12:09:19,348 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 [2021-12-22 12:09:19,348 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 59 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 266 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 [2021-12-22 12:09:19,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 266 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:09:19,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2021-12-22 12:09:19,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1106. [2021-12-22 12:09:19,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1106 states, 1105 states have (on average 1.3800904977375565) internal successors, (1525), 1105 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:19,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1525 transitions. [2021-12-22 12:09:19,834 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1525 transitions. Word has length 76 [2021-12-22 12:09:19,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:19,834 INFO L470 AbstractCegarLoop]: Abstraction has 1106 states and 1525 transitions. [2021-12-22 12:09:19,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 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) [2021-12-22 12:09:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1525 transitions. [2021-12-22 12:09:19,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-22 12:09:19,835 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:19,836 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] [2021-12-22 12:09:19,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-22 12:09:19,836 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)] === [2021-12-22 12:09:19,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:19,837 INFO L85 PathProgramCache]: Analyzing trace with hash -628172474, now seen corresponding path program 1 times [2021-12-22 12:09:19,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:19,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593500361] [2021-12-22 12:09:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:19,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:19,884 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:19,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:19,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593500361] [2021-12-22 12:09:19,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593500361] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:19,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:19,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:09:19,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785907761] [2021-12-22 12:09:19,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:19,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:09:19,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:19,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:09:19,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:09:19,887 INFO L87 Difference]: Start difference. First operand 1106 states and 1525 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) [2021-12-22 12:09:20,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:20,757 INFO L93 Difference]: Finished difference Result 3092 states and 4260 transitions. [2021-12-22 12:09:20,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:09:20,757 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 [2021-12-22 12:09:20,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:20,763 INFO L225 Difference]: With dead ends: 3092 [2021-12-22 12:09:20,764 INFO L226 Difference]: Without dead ends: 2045 [2021-12-22 12:09:20,765 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 [2021-12-22 12:09:20,766 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 52 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 265 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 [2021-12-22 12:09:20,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 265 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:09:20,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2021-12-22 12:09:21,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1935. [2021-12-22 12:09:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1935 states, 1934 states have (on average 1.3624612202688728) internal successors, (2635), 1934 states have internal predecessors, (2635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2635 transitions. [2021-12-22 12:09:21,698 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2635 transitions. Word has length 77 [2021-12-22 12:09:21,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:21,699 INFO L470 AbstractCegarLoop]: Abstraction has 1935 states and 2635 transitions. [2021-12-22 12:09:21,699 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) [2021-12-22 12:09:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2635 transitions. [2021-12-22 12:09:21,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-22 12:09:21,700 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:21,700 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, 1] [2021-12-22 12:09:21,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-22 12:09:21,700 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)] === [2021-12-22 12:09:21,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:21,701 INFO L85 PathProgramCache]: Analyzing trace with hash -763788569, now seen corresponding path program 1 times [2021-12-22 12:09:21,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:21,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542211230] [2021-12-22 12:09:21,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:21,702 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:21,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:21,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:21,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542211230] [2021-12-22 12:09:21,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542211230] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:21,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:21,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:09:21,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120648644] [2021-12-22 12:09:21,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:21,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:09:21,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:21,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:09:21,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:09:21,750 INFO L87 Difference]: Start difference. First operand 1935 states and 2635 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:23,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:23,301 INFO L93 Difference]: Finished difference Result 5471 states and 7401 transitions. [2021-12-22 12:09:23,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:09:23,301 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 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 78 [2021-12-22 12:09:23,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:23,310 INFO L225 Difference]: With dead ends: 5471 [2021-12-22 12:09:23,311 INFO L226 Difference]: Without dead ends: 3595 [2021-12-22 12:09:23,313 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 [2021-12-22 12:09:23,313 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 42 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 263 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 [2021-12-22 12:09:23,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 263 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:09:23,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2021-12-22 12:09:24,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3377. [2021-12-22 12:09:24,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 3376 states have (on average 1.3341232227488151) internal successors, (4504), 3376 states have internal predecessors, (4504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:24,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4504 transitions. [2021-12-22 12:09:24,755 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4504 transitions. Word has length 78 [2021-12-22 12:09:24,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:24,767 INFO L470 AbstractCegarLoop]: Abstraction has 3377 states and 4504 transitions. [2021-12-22 12:09:24,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:24,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4504 transitions. [2021-12-22 12:09:24,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-22 12:09:24,768 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:24,768 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, 1, 1] [2021-12-22 12:09:24,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-22 12:09:24,768 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)] === [2021-12-22 12:09:24,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:24,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1461539563, now seen corresponding path program 1 times [2021-12-22 12:09:24,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:24,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490030225] [2021-12-22 12:09:24,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:24,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:24,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:24,839 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:24,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490030225] [2021-12-22 12:09:24,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490030225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:24,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:24,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 12:09:24,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252647619] [2021-12-22 12:09:24,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:24,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 12:09:24,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:24,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 12:09:24,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-22 12:09:24,842 INFO L87 Difference]: Start difference. First operand 3377 states and 4504 transitions. Second operand has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:28,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:28,053 INFO L93 Difference]: Finished difference Result 5221 states and 6939 transitions. [2021-12-22 12:09:28,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-22 12:09:28,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-12-22 12:09:28,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:28,066 INFO L225 Difference]: With dead ends: 5221 [2021-12-22 12:09:28,067 INFO L226 Difference]: Without dead ends: 5219 [2021-12-22 12:09:28,067 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 [2021-12-22 12:09:28,068 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 199 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:28,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 629 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:09:28,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2021-12-22 12:09:29,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 3473. [2021-12-22 12:09:29,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3473 states, 3472 states have (on average 1.3133640552995391) internal successors, (4560), 3472 states have internal predecessors, (4560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:29,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3473 states to 3473 states and 4560 transitions. [2021-12-22 12:09:29,624 INFO L78 Accepts]: Start accepts. Automaton has 3473 states and 4560 transitions. Word has length 79 [2021-12-22 12:09:29,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:29,624 INFO L470 AbstractCegarLoop]: Abstraction has 3473 states and 4560 transitions. [2021-12-22 12:09:29,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.166666666666666) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:29,624 INFO L276 IsEmpty]: Start isEmpty. Operand 3473 states and 4560 transitions. [2021-12-22 12:09:29,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-22 12:09:29,625 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:29,625 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, 1, 1] [2021-12-22 12:09:29,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-22 12:09:29,626 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)] === [2021-12-22 12:09:29,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:29,626 INFO L85 PathProgramCache]: Analyzing trace with hash 965347417, now seen corresponding path program 1 times [2021-12-22 12:09:29,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:29,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29472283] [2021-12-22 12:09:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:29,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:29,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:29,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:29,657 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:29,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29472283] [2021-12-22 12:09:29,657 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29472283] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 12:09:29,657 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 12:09:29,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 12:09:29,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159048122] [2021-12-22 12:09:29,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 12:09:29,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 12:09:29,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:29,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 12:09:29,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 12:09:29,659 INFO L87 Difference]: Start difference. First operand 3473 states and 4560 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:31,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 12:09:31,268 INFO L93 Difference]: Finished difference Result 7021 states and 9234 transitions. [2021-12-22 12:09:31,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 12:09:31,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2021-12-22 12:09:31,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 12:09:31,277 INFO L225 Difference]: With dead ends: 7021 [2021-12-22 12:09:31,277 INFO L226 Difference]: Without dead ends: 3607 [2021-12-22 12:09:31,280 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 [2021-12-22 12:09:31,281 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 66 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 12:09:31,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 216 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 12:09:31,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2021-12-22 12:09:33,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 3605. [2021-12-22 12:09:33,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3605 states, 3604 states have (on average 1.293007769145394) internal successors, (4660), 3604 states have internal predecessors, (4660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:33,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 4660 transitions. [2021-12-22 12:09:33,098 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 4660 transitions. Word has length 79 [2021-12-22 12:09:33,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 12:09:33,098 INFO L470 AbstractCegarLoop]: Abstraction has 3605 states and 4660 transitions. [2021-12-22 12:09:33,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-22 12:09:33,099 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 4660 transitions. [2021-12-22 12:09:33,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 12:09:33,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 12:09:33,100 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 12:09:33,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-22 12:09:33,101 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)] === [2021-12-22 12:09:33,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 12:09:33,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1381911094, now seen corresponding path program 1 times [2021-12-22 12:09:33,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 12:09:33,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152517920] [2021-12-22 12:09:33,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:33,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 12:09:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:33,305 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 12:09:33,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152517920] [2021-12-22 12:09:33,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152517920] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-22 12:09:33,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400225394] [2021-12-22 12:09:33,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 12:09:33,306 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 12:09:33,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 12:09:33,307 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) [2021-12-22 12:09:33,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 12:09:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 12:09:33,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-22 12:09:33,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 12:09:34,452 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:34,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-22 12:09:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-22 12:09:36,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400225394] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-22 12:09:36,110 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-22 12:09:36,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2021-12-22 12:09:36,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020071013] [2021-12-22 12:09:36,110 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-22 12:09:36,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-22 12:09:36,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 12:09:36,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-22 12:09:36,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=711, Unknown=0, NotChecked=0, Total=812 [2021-12-22 12:09:36,111 INFO L87 Difference]: Start difference. First operand 3605 states and 4660 transitions. Second operand has 29 states, 29 states have (on average 9.344827586206897) internal successors, (271), 28 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)