./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 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_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-?-791161d [2022-07-22 18:32:10,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:32:10,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:32:10,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:32:10,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:32:10,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:32:10,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:32:10,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:32:10,158 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:32:10,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:32:10,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:32:10,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:32:10,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:32:10,162 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:32:10,163 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:32:10,164 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:32:10,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:32:10,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:32:10,167 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:32:10,169 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:32:10,170 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:32:10,171 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:32:10,172 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:32:10,173 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:32:10,174 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:32:10,177 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:32:10,177 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:32:10,177 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:32:10,178 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:32:10,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:32:10,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:32:10,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:32:10,180 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:32:10,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:32:10,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:32:10,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:32:10,185 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:32:10,186 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:32:10,187 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:32:10,187 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:32:10,188 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:32:10,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:32:10,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:32:10,209 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:32:10,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:32:10,209 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:32:10,210 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:32:10,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:32:10,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:32:10,211 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:32:10,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:32:10,211 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:32:10,212 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:32:10,212 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:32:10,212 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:32:10,212 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:32:10,213 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:32:10,213 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:32:10,213 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:32:10,213 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:32:10,213 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:32:10,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:32:10,214 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:32:10,214 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:32:10,214 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:32:10,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:32:10,215 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:32:10,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:32:10,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:32:10,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:32:10,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:32:10,216 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:32:10,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:32:10,216 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:32:10,216 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:32:10,216 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:32:10,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8903dcb91a7500453f98b743541ef164d589c2f5828e51ac11fb5ea90b79c3dd [2022-07-22 18:32:10,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:32:10,450 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:32:10,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:32:10,454 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:32:10,454 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:32:10,456 INFO L432 ainManager$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 [2022-07-22 18:32:10,514 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b12380ce4/a4e7397bc189487498b812c1ca63be17/FLAG38de86f99 [2022-07-22 18:32:10,993 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:32:10,994 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 [2022-07-22 18:32:11,009 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b12380ce4/a4e7397bc189487498b812c1ca63be17/FLAG38de86f99 [2022-07-22 18:32:11,487 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b12380ce4/a4e7397bc189487498b812c1ca63be17 [2022-07-22 18:32:11,489 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:32:11,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:32:11,493 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:32:11,494 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:32:11,497 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:32:11,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:32:11" (1/1) ... [2022-07-22 18:32:11,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52914b7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:32:11, skipping insertion in model container [2022-07-22 18:32:11,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:32:11" (1/1) ... [2022-07-22 18:32:11,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:32:11,560 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:32:11,747 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] [2022-07-22 18:32:11,762 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] [2022-07-22 18:32:11,768 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] [2022-07-22 18:32:11,772 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] [2022-07-22 18:32:11,778 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] [2022-07-22 18:32:11,793 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] [2022-07-22 18:32:11,799 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] [2022-07-22 18:32:11,840 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:32:11,857 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:32:11,891 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] [2022-07-22 18:32:11,909 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] [2022-07-22 18:32:11,913 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] [2022-07-22 18:32:11,915 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] [2022-07-22 18:32:11,920 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] [2022-07-22 18:32:11,922 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] [2022-07-22 18:32:11,925 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] [2022-07-22 18:32:11,946 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:32:11,968 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:32:11,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:32:11 WrapperNode [2022-07-22 18:32:11,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:32:11,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:32:11,969 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:32:11,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:32:11,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:32:11" (1/1) ... [2022-07-22 18:32:11,992 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:32:11" (1/1) ... [2022-07-22 18:32:12,044 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1018 [2022-07-22 18:32:12,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:32:12,046 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:32:12,047 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:32:12,047 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:32:12,053 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:32:11" (1/1) ... [2022-07-22 18:32:12,053 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:32:11" (1/1) ... [2022-07-22 18:32:12,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:32:11" (1/1) ... [2022-07-22 18:32:12,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:32:11" (1/1) ... [2022-07-22 18:32:12,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:32:11" (1/1) ... [2022-07-22 18:32:12,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:32:11" (1/1) ... [2022-07-22 18:32:12,079 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:32:11" (1/1) ... [2022-07-22 18:32:12,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:32:12,085 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:32:12,085 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:32:12,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:32:12,086 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:32:11" (1/1) ... [2022-07-22 18:32:12,111 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:32:12,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:32:12,145 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 18:32:12,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 18:32:12,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:32:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:32:12,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:32:12,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:32:12,329 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:32:12,330 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:32:13,025 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:32:13,033 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:32:13,034 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:32:13,036 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:32:13 BoogieIcfgContainer [2022-07-22 18:32:13,036 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:32:13,037 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:32:13,038 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:32:13,041 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:32:13,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:32:11" (1/3) ... [2022-07-22 18:32:13,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d020d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:32:13, skipping insertion in model container [2022-07-22 18:32:13,042 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:32:11" (2/3) ... [2022-07-22 18:32:13,042 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d020d92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:32:13, skipping insertion in model container [2022-07-22 18:32:13,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:32:13" (3/3) ... [2022-07-22 18:32:13,044 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-07-22 18:32:13,058 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:32:13,058 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-07-22 18:32:13,113 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:32:13,126 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5985aaa6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@ba51850 [2022-07-22 18:32:13,126 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-22 18:32:13,131 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) [2022-07-22 18:32:13,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-22 18:32:13,147 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:13,149 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:13,150 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:13,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:13,158 INFO L85 PathProgramCache]: Analyzing trace with hash 1485336045, now seen corresponding path program 1 times [2022-07-22 18:32:13,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:13,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701663715] [2022-07-22 18:32:13,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:13,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:13,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:13,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:13,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:13,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701663715] [2022-07-22 18:32:13,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701663715] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:13,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:13,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:32:13,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497009222] [2022-07-22 18:32:13,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:13,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:32:13,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:32:13,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:32:13,477 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) [2022-07-22 18:32:13,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:13,711 INFO L93 Difference]: Finished difference Result 339 states and 570 transitions. [2022-07-22 18:32:13,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:32:13,713 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 [2022-07-22 18:32:13,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:13,726 INFO L225 Difference]: With dead ends: 339 [2022-07-22 18:32:13,726 INFO L226 Difference]: Without dead ends: 175 [2022-07-22 18:32:13,732 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:13,739 INFO L413 NwaCegarLoop]: 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 [2022-07-22 18:32:13,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [847 Valid, 224 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:32:13,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-07-22 18:32:13,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2022-07-22 18:32:13,797 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) [2022-07-22 18:32:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 216 transitions. [2022-07-22 18:32:13,800 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 216 transitions. Word has length 47 [2022-07-22 18:32:13,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:13,800 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 216 transitions. [2022-07-22 18:32:13,801 INFO L496 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) [2022-07-22 18:32:13,801 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 216 transitions. [2022-07-22 18:32:13,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-22 18:32:13,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:13,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:13,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:32:13,808 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:13,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:13,810 INFO L85 PathProgramCache]: Analyzing trace with hash 200422799, now seen corresponding path program 1 times [2022-07-22 18:32:13,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:13,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189148459] [2022-07-22 18:32:13,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:13,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:13,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:13,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:13,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189148459] [2022-07-22 18:32:13,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1189148459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:13,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:13,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:32:13,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067415056] [2022-07-22 18:32:13,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:13,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:32:13,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:13,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:32:13,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:32:13,972 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) [2022-07-22 18:32:14,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:14,081 INFO L93 Difference]: Finished difference Result 298 states and 377 transitions. [2022-07-22 18:32:14,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:32:14,081 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 [2022-07-22 18:32:14,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:14,083 INFO L225 Difference]: With dead ends: 298 [2022-07-22 18:32:14,083 INFO L226 Difference]: Without dead ends: 162 [2022-07-22 18:32:14,091 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:14,093 INFO L413 NwaCegarLoop]: 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 [2022-07-22 18:32:14,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [551 Valid, 131 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:32:14,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-22 18:32:14,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2022-07-22 18:32:14,114 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) [2022-07-22 18:32:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 200 transitions. [2022-07-22 18:32:14,115 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 200 transitions. Word has length 48 [2022-07-22 18:32:14,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:14,116 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 200 transitions. [2022-07-22 18:32:14,116 INFO L496 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) [2022-07-22 18:32:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 200 transitions. [2022-07-22 18:32:14,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-22 18:32:14,117 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:14,117 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:14,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:32:14,117 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:14,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:14,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2021523794, now seen corresponding path program 1 times [2022-07-22 18:32:14,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:14,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379268747] [2022-07-22 18:32:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:14,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:14,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:14,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:14,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379268747] [2022-07-22 18:32:14,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379268747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:14,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:14,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:32:14,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716364685] [2022-07-22 18:32:14,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:14,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:32:14,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:14,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:32:14,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:32:14,194 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) [2022-07-22 18:32:14,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:14,329 INFO L93 Difference]: Finished difference Result 285 states and 360 transitions. [2022-07-22 18:32:14,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:32:14,329 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 [2022-07-22 18:32:14,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:14,331 INFO L225 Difference]: With dead ends: 285 [2022-07-22 18:32:14,331 INFO L226 Difference]: Without dead ends: 157 [2022-07-22 18:32:14,333 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:14,336 INFO L413 NwaCegarLoop]: 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 [2022-07-22 18:32:14,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [513 Valid, 128 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:32:14,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-22 18:32:14,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-07-22 18:32:14,351 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) [2022-07-22 18:32:14,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 193 transitions. [2022-07-22 18:32:14,352 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 193 transitions. Word has length 49 [2022-07-22 18:32:14,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:14,352 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 193 transitions. [2022-07-22 18:32:14,352 INFO L496 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) [2022-07-22 18:32:14,352 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 193 transitions. [2022-07-22 18:32:14,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-22 18:32:14,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:14,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:14,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:32:14,354 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:14,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1243075504, now seen corresponding path program 1 times [2022-07-22 18:32:14,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:14,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991778370] [2022-07-22 18:32:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:14,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:14,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:14,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:14,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991778370] [2022-07-22 18:32:14,528 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991778370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:14,528 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:14,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:32:14,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454702365] [2022-07-22 18:32:14,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:14,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:32:14,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:14,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:32:14,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:32:14,536 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) [2022-07-22 18:32:15,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:15,082 INFO L93 Difference]: Finished difference Result 332 states and 431 transitions. [2022-07-22 18:32:15,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:32:15,083 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 [2022-07-22 18:32:15,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:15,084 INFO L225 Difference]: With dead ends: 332 [2022-07-22 18:32:15,084 INFO L226 Difference]: Without dead ends: 327 [2022-07-22 18:32:15,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2022-07-22 18:32:15,086 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1198 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:15,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1198 Valid, 607 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:32:15,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-22 18:32:15,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 157. [2022-07-22 18:32:15,101 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) [2022-07-22 18:32:15,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 192 transitions. [2022-07-22 18:32:15,101 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 192 transitions. Word has length 50 [2022-07-22 18:32:15,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:15,102 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 192 transitions. [2022-07-22 18:32:15,102 INFO L496 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) [2022-07-22 18:32:15,102 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 192 transitions. [2022-07-22 18:32:15,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-22 18:32:15,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:15,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:15,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:32:15,104 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:15,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:15,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1139694690, now seen corresponding path program 1 times [2022-07-22 18:32:15,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:15,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650662952] [2022-07-22 18:32:15,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:15,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:15,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:15,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:15,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:15,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650662952] [2022-07-22 18:32:15,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650662952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:15,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:15,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:32:15,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76900471] [2022-07-22 18:32:15,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:15,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:32:15,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:15,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:32:15,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:32:15,222 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) [2022-07-22 18:32:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:15,820 INFO L93 Difference]: Finished difference Result 391 states and 514 transitions. [2022-07-22 18:32:15,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:32:15,821 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 [2022-07-22 18:32:15,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:15,827 INFO L225 Difference]: With dead ends: 391 [2022-07-22 18:32:15,827 INFO L226 Difference]: Without dead ends: 331 [2022-07-22 18:32:15,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-07-22 18:32:15,829 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 1041 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:15,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1041 Valid, 810 Invalid, 598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 18:32:15,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2022-07-22 18:32:15,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 157. [2022-07-22 18:32:15,853 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) [2022-07-22 18:32:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 191 transitions. [2022-07-22 18:32:15,854 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 191 transitions. Word has length 50 [2022-07-22 18:32:15,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:15,854 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 191 transitions. [2022-07-22 18:32:15,854 INFO L496 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) [2022-07-22 18:32:15,855 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 191 transitions. [2022-07-22 18:32:15,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-22 18:32:15,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:15,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:15,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:32:15,856 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:15,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:15,857 INFO L85 PathProgramCache]: Analyzing trace with hash 134088220, now seen corresponding path program 1 times [2022-07-22 18:32:15,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:15,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998782318] [2022-07-22 18:32:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:15,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:15,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:15,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:15,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998782318] [2022-07-22 18:32:15,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998782318] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:15,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:15,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:32:15,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358585107] [2022-07-22 18:32:15,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:15,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:32:15,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:15,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:32:15,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:32:15,990 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) [2022-07-22 18:32:16,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:16,258 INFO L93 Difference]: Finished difference Result 312 states and 389 transitions. [2022-07-22 18:32:16,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 18:32:16,259 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 [2022-07-22 18:32:16,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:16,261 INFO L225 Difference]: With dead ends: 312 [2022-07-22 18:32:16,261 INFO L226 Difference]: Without dead ends: 229 [2022-07-22 18:32:16,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2022-07-22 18:32:16,265 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 1007 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1007 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:16,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1007 Valid, 307 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:32:16,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-22 18:32:16,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 157. [2022-07-22 18:32:16,279 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) [2022-07-22 18:32:16,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 190 transitions. [2022-07-22 18:32:16,280 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 190 transitions. Word has length 50 [2022-07-22 18:32:16,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:16,280 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 190 transitions. [2022-07-22 18:32:16,281 INFO L496 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) [2022-07-22 18:32:16,281 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 190 transitions. [2022-07-22 18:32:16,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-22 18:32:16,282 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:16,282 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:16,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:32:16,283 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:16,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:16,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1263855603, now seen corresponding path program 1 times [2022-07-22 18:32:16,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:16,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276343578] [2022-07-22 18:32:16,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:16,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:16,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:16,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:16,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276343578] [2022-07-22 18:32:16,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276343578] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:16,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:16,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:32:16,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291499141] [2022-07-22 18:32:16,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:16,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:32:16,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:16,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:32:16,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:32:16,633 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) [2022-07-22 18:32:17,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:17,273 INFO L93 Difference]: Finished difference Result 292 states and 367 transitions. [2022-07-22 18:32:17,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:32:17,274 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 [2022-07-22 18:32:17,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:17,275 INFO L225 Difference]: With dead ends: 292 [2022-07-22 18:32:17,275 INFO L226 Difference]: Without dead ends: 245 [2022-07-22 18:32:17,276 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:17,276 INFO L413 NwaCegarLoop]: 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:17,277 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1045 Valid, 885 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:32:17,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-07-22 18:32:17,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 153. [2022-07-22 18:32:17,297 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) [2022-07-22 18:32:17,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 185 transitions. [2022-07-22 18:32:17,298 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 185 transitions. Word has length 52 [2022-07-22 18:32:17,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:17,298 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 185 transitions. [2022-07-22 18:32:17,298 INFO L496 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) [2022-07-22 18:32:17,298 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 185 transitions. [2022-07-22 18:32:17,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-22 18:32:17,299 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:17,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:17,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:32:17,300 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:17,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:17,300 INFO L85 PathProgramCache]: Analyzing trace with hash 1250594545, now seen corresponding path program 1 times [2022-07-22 18:32:17,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:17,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430661476] [2022-07-22 18:32:17,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:17,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:17,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:17,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:17,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:17,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430661476] [2022-07-22 18:32:17,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430661476] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:17,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:17,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:32:17,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774030887] [2022-07-22 18:32:17,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:17,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:32:17,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:17,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:32:17,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:32:17,555 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) [2022-07-22 18:32:18,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:18,106 INFO L93 Difference]: Finished difference Result 294 states and 373 transitions. [2022-07-22 18:32:18,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 18:32:18,107 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 [2022-07-22 18:32:18,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:18,108 INFO L225 Difference]: With dead ends: 294 [2022-07-22 18:32:18,108 INFO L226 Difference]: Without dead ends: 240 [2022-07-22 18:32:18,109 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:18,109 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 690 mSDsluCounter, 1194 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 690 SdHoareTripleChecker+Valid, 1444 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:18,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [690 Valid, 1444 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:32:18,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-07-22 18:32:18,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 142. [2022-07-22 18:32:18,135 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) [2022-07-22 18:32:18,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 172 transitions. [2022-07-22 18:32:18,136 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 172 transitions. Word has length 52 [2022-07-22 18:32:18,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:18,138 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 172 transitions. [2022-07-22 18:32:18,138 INFO L496 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) [2022-07-22 18:32:18,138 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 172 transitions. [2022-07-22 18:32:18,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-22 18:32:18,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:18,139 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:18,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:32:18,140 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:18,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:18,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1706910886, now seen corresponding path program 1 times [2022-07-22 18:32:18,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:18,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617946338] [2022-07-22 18:32:18,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:18,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:18,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:18,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617946338] [2022-07-22 18:32:18,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617946338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:18,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:18,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:32:18,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704058499] [2022-07-22 18:32:18,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:18,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:32:18,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:18,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:32:18,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:32:18,452 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) [2022-07-22 18:32:18,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:18,994 INFO L93 Difference]: Finished difference Result 226 states and 278 transitions. [2022-07-22 18:32:18,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 18:32:18,994 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 [2022-07-22 18:32:18,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:18,997 INFO L225 Difference]: With dead ends: 226 [2022-07-22 18:32:18,997 INFO L226 Difference]: Without dead ends: 222 [2022-07-22 18:32:18,998 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:19,000 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 826 mSDsluCounter, 771 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:19,000 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 916 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:32:19,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-22 18:32:19,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 138. [2022-07-22 18:32:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 134 states have (on average 1.2537313432835822) internal successors, (168), 137 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:32:19,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 168 transitions. [2022-07-22 18:32:19,025 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 168 transitions. Word has length 52 [2022-07-22 18:32:19,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:19,025 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 168 transitions. [2022-07-22 18:32:19,026 INFO L496 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) [2022-07-22 18:32:19,026 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 168 transitions. [2022-07-22 18:32:19,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 18:32:19,026 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:19,026 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:19,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:32:19,027 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:19,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:19,028 INFO L85 PathProgramCache]: Analyzing trace with hash 190692674, now seen corresponding path program 1 times [2022-07-22 18:32:19,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:19,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928393508] [2022-07-22 18:32:19,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:19,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:19,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:19,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:19,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:19,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928393508] [2022-07-22 18:32:19,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928393508] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:19,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:19,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 18:32:19,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161043523] [2022-07-22 18:32:19,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:19,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:32:19,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:19,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:32:19,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:32:19,207 INFO L87 Difference]: Start difference. First operand 138 states and 168 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) [2022-07-22 18:32:20,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:20,046 INFO L93 Difference]: Finished difference Result 350 states and 453 transitions. [2022-07-22 18:32:20,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 18:32:20,046 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 [2022-07-22 18:32:20,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:20,048 INFO L225 Difference]: With dead ends: 350 [2022-07-22 18:32:20,048 INFO L226 Difference]: Without dead ends: 343 [2022-07-22 18:32:20,049 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:20,049 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 2122 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2122 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:20,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2122 Valid, 582 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 471 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:32:20,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-07-22 18:32:20,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 142. [2022-07-22 18:32:20,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 138 states have (on average 1.2463768115942029) 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) [2022-07-22 18:32:20,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 172 transitions. [2022-07-22 18:32:20,073 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 172 transitions. Word has length 53 [2022-07-22 18:32:20,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:20,074 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 172 transitions. [2022-07-22 18:32:20,074 INFO L496 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) [2022-07-22 18:32:20,074 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 172 transitions. [2022-07-22 18:32:20,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 18:32:20,074 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:20,075 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:20,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:32:20,075 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:20,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:20,076 INFO L85 PathProgramCache]: Analyzing trace with hash -659119293, now seen corresponding path program 1 times [2022-07-22 18:32:20,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:20,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994226162] [2022-07-22 18:32:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:20,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:20,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:20,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:20,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:20,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994226162] [2022-07-22 18:32:20,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994226162] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:20,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:20,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:32:20,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288661014] [2022-07-22 18:32:20,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:20,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:32:20,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:20,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:32:20,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:32:20,172 INFO L87 Difference]: Start difference. First operand 142 states and 172 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) [2022-07-22 18:32:20,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:20,489 INFO L93 Difference]: Finished difference Result 223 states and 274 transitions. [2022-07-22 18:32:20,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 18:32:20,490 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 [2022-07-22 18:32:20,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:20,491 INFO L225 Difference]: With dead ends: 223 [2022-07-22 18:32:20,492 INFO L226 Difference]: Without dead ends: 216 [2022-07-22 18:32:20,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-07-22 18:32:20,493 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 920 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:20,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [920 Valid, 424 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:32:20,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-22 18:32:20,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 142. [2022-07-22 18:32:20,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 138 states have (on average 1.2391304347826086) internal successors, (171), 141 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:32:20,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 171 transitions. [2022-07-22 18:32:20,521 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 171 transitions. Word has length 53 [2022-07-22 18:32:20,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:20,521 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 171 transitions. [2022-07-22 18:32:20,521 INFO L496 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) [2022-07-22 18:32:20,522 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 171 transitions. [2022-07-22 18:32:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 18:32:20,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:20,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:20,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:32:20,523 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:20,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:20,523 INFO L85 PathProgramCache]: Analyzing trace with hash 339917441, now seen corresponding path program 1 times [2022-07-22 18:32:20,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:20,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247200058] [2022-07-22 18:32:20,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:20,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:20,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:20,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247200058] [2022-07-22 18:32:20,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247200058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:20,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:20,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:32:20,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896344704] [2022-07-22 18:32:20,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:20,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:32:20,623 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:20,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:32:20,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:32:20,624 INFO L87 Difference]: Start difference. First operand 142 states and 171 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) [2022-07-22 18:32:20,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:20,967 INFO L93 Difference]: Finished difference Result 285 states and 361 transitions. [2022-07-22 18:32:20,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 18:32:20,968 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 [2022-07-22 18:32:20,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:20,969 INFO L225 Difference]: With dead ends: 285 [2022-07-22 18:32:20,969 INFO L226 Difference]: Without dead ends: 224 [2022-07-22 18:32:20,970 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:20,970 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 594 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:20,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [594 Valid, 539 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:32:20,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-07-22 18:32:20,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 142. [2022-07-22 18:32:20,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 138 states have (on average 1.2318840579710144) internal successors, (170), 141 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:32:20,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 170 transitions. [2022-07-22 18:32:20,994 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 170 transitions. Word has length 53 [2022-07-22 18:32:20,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:20,994 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 170 transitions. [2022-07-22 18:32:20,994 INFO L496 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) [2022-07-22 18:32:20,994 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 170 transitions. [2022-07-22 18:32:20,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-22 18:32:20,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:20,995 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:20,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:32:20,995 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:20,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:20,996 INFO L85 PathProgramCache]: Analyzing trace with hash -746268687, now seen corresponding path program 1 times [2022-07-22 18:32:20,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:20,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345527429] [2022-07-22 18:32:20,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:20,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:21,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:21,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:21,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345527429] [2022-07-22 18:32:21,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345527429] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:21,096 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:21,096 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:32:21,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398488394] [2022-07-22 18:32:21,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:21,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:32:21,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:21,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:32:21,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:32:21,098 INFO L87 Difference]: Start difference. First operand 142 states and 170 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) [2022-07-22 18:32:21,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:21,462 INFO L93 Difference]: Finished difference Result 223 states and 272 transitions. [2022-07-22 18:32:21,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 18:32:21,462 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 [2022-07-22 18:32:21,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:21,463 INFO L225 Difference]: With dead ends: 223 [2022-07-22 18:32:21,463 INFO L226 Difference]: Without dead ends: 216 [2022-07-22 18:32:21,464 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:21,464 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 496 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:21,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [496 Valid, 625 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:32:21,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-22 18:32:21,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 138. [2022-07-22 18:32:21,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 138 states, 134 states have (on average 1.2313432835820894) internal successors, (165), 137 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:32:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 165 transitions. [2022-07-22 18:32:21,488 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 165 transitions. Word has length 54 [2022-07-22 18:32:21,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:21,488 INFO L495 AbstractCegarLoop]: Abstraction has 138 states and 165 transitions. [2022-07-22 18:32:21,488 INFO L496 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) [2022-07-22 18:32:21,489 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 165 transitions. [2022-07-22 18:32:21,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 18:32:21,489 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:21,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:21,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:32:21,490 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:21,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:21,490 INFO L85 PathProgramCache]: Analyzing trace with hash -11876974, now seen corresponding path program 1 times [2022-07-22 18:32:21,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:21,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945252713] [2022-07-22 18:32:21,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:21,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:21,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:21,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:21,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945252713] [2022-07-22 18:32:21,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945252713] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:21,810 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:21,810 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 18:32:21,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611888940] [2022-07-22 18:32:21,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:21,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 18:32:21,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:21,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 18:32:21,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-22 18:32:21,812 INFO L87 Difference]: Start difference. First operand 138 states and 165 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) [2022-07-22 18:32:23,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:23,136 INFO L93 Difference]: Finished difference Result 368 states and 458 transitions. [2022-07-22 18:32:23,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 18:32:23,137 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 [2022-07-22 18:32:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:23,139 INFO L225 Difference]: With dead ends: 368 [2022-07-22 18:32:23,139 INFO L226 Difference]: Without dead ends: 360 [2022-07-22 18:32:23,139 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:23,140 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1055 mSDsluCounter, 2626 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1055 SdHoareTripleChecker+Valid, 2935 SdHoareTripleChecker+Invalid, 1341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:23,140 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1055 Valid, 2935 Invalid, 1341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1273 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 18:32:23,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-07-22 18:32:23,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 143. [2022-07-22 18:32:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 139 states have (on average 1.223021582733813) internal successors, (170), 142 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:32:23,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 170 transitions. [2022-07-22 18:32:23,169 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 170 transitions. Word has length 55 [2022-07-22 18:32:23,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:23,169 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 170 transitions. [2022-07-22 18:32:23,169 INFO L496 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) [2022-07-22 18:32:23,169 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 170 transitions. [2022-07-22 18:32:23,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 18:32:23,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:23,170 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:23,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:32:23,170 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:23,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:23,171 INFO L85 PathProgramCache]: Analyzing trace with hash -637393645, now seen corresponding path program 1 times [2022-07-22 18:32:23,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:23,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162884235] [2022-07-22 18:32:23,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:23,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:23,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:23,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:23,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:23,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162884235] [2022-07-22 18:32:23,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162884235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:23,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:23,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-22 18:32:23,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348831175] [2022-07-22 18:32:23,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:23,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-22 18:32:23,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:23,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-22 18:32:23,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-22 18:32:23,521 INFO L87 Difference]: Start difference. First operand 143 states and 170 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) [2022-07-22 18:32:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:24,645 INFO L93 Difference]: Finished difference Result 371 states and 460 transitions. [2022-07-22 18:32:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 18:32:24,645 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 [2022-07-22 18:32:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:24,647 INFO L225 Difference]: With dead ends: 371 [2022-07-22 18:32:24,647 INFO L226 Difference]: Without dead ends: 363 [2022-07-22 18:32:24,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=228, Invalid=894, Unknown=0, NotChecked=0, Total=1122 [2022-07-22 18:32:24,648 INFO L413 NwaCegarLoop]: 297 mSDtfsCounter, 937 mSDsluCounter, 2110 mSDsCounter, 0 mSdLazyCounter, 1079 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 937 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1079 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:24,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [937 Valid, 2407 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1079 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 18:32:24,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-07-22 18:32:24,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 152. [2022-07-22 18:32:24,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 148 states have (on average 1.222972972972973) internal successors, (181), 151 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:32:24,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 181 transitions. [2022-07-22 18:32:24,680 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 181 transitions. Word has length 55 [2022-07-22 18:32:24,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:24,681 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 181 transitions. [2022-07-22 18:32:24,681 INFO L496 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) [2022-07-22 18:32:24,681 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 181 transitions. [2022-07-22 18:32:24,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 18:32:24,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:24,682 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:24,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:32:24,682 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:24,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:24,682 INFO L85 PathProgramCache]: Analyzing trace with hash -824240014, now seen corresponding path program 1 times [2022-07-22 18:32:24,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:24,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132448434] [2022-07-22 18:32:24,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:24,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:24,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:24,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:24,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132448434] [2022-07-22 18:32:24,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132448434] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:24,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:24,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:32:24,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221984324] [2022-07-22 18:32:24,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:24,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:32:24,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:24,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:32:24,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:32:24,935 INFO L87 Difference]: Start difference. First operand 152 states and 181 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) [2022-07-22 18:32:25,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:25,505 INFO L93 Difference]: Finished difference Result 317 states and 408 transitions. [2022-07-22 18:32:25,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:32:25,505 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 [2022-07-22 18:32:25,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:25,507 INFO L225 Difference]: With dead ends: 317 [2022-07-22 18:32:25,507 INFO L226 Difference]: Without dead ends: 311 [2022-07-22 18:32:25,508 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:25,508 INFO L413 NwaCegarLoop]: 314 mSDtfsCounter, 878 mSDsluCounter, 1025 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:25,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1339 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 400 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:32:25,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-07-22 18:32:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 146. [2022-07-22 18:32:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 143 states have (on average 1.2237762237762237) internal successors, (175), 145 states have internal predecessors, (175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:32:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 175 transitions. [2022-07-22 18:32:25,534 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 175 transitions. Word has length 55 [2022-07-22 18:32:25,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:25,535 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 175 transitions. [2022-07-22 18:32:25,535 INFO L496 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) [2022-07-22 18:32:25,535 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 175 transitions. [2022-07-22 18:32:25,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 18:32:25,536 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:25,536 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:25,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 18:32:25,536 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:25,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:25,537 INFO L85 PathProgramCache]: Analyzing trace with hash -808849069, now seen corresponding path program 1 times [2022-07-22 18:32:25,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:25,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053830139] [2022-07-22 18:32:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:25,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:25,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:25,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:25,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053830139] [2022-07-22 18:32:25,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053830139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:25,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:25,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 18:32:25,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611458542] [2022-07-22 18:32:25,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:25,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 18:32:25,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:25,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 18:32:25,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-22 18:32:25,763 INFO L87 Difference]: Start difference. First operand 146 states and 175 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) [2022-07-22 18:32:26,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:26,315 INFO L93 Difference]: Finished difference Result 314 states and 409 transitions. [2022-07-22 18:32:26,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 18:32:26,316 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 [2022-07-22 18:32:26,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:26,317 INFO L225 Difference]: With dead ends: 314 [2022-07-22 18:32:26,317 INFO L226 Difference]: Without dead ends: 299 [2022-07-22 18:32:26,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2022-07-22 18:32:26,318 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 435 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 474 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 474 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:26,318 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [435 Valid, 2013 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 474 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:32:26,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2022-07-22 18:32:26,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 125. [2022-07-22 18:32:26,349 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) [2022-07-22 18:32:26,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 151 transitions. [2022-07-22 18:32:26,350 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 151 transitions. Word has length 56 [2022-07-22 18:32:26,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:26,350 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 151 transitions. [2022-07-22 18:32:26,350 INFO L496 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) [2022-07-22 18:32:26,350 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 151 transitions. [2022-07-22 18:32:26,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 18:32:26,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:26,351 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:26,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 18:32:26,351 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:26,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:26,352 INFO L85 PathProgramCache]: Analyzing trace with hash 623432965, now seen corresponding path program 1 times [2022-07-22 18:32:26,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:26,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563683643] [2022-07-22 18:32:26,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:26,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:26,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:26,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:26,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563683643] [2022-07-22 18:32:26,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563683643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:26,681 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:26,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-22 18:32:26,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159281225] [2022-07-22 18:32:26,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:26,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 18:32:26,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:26,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 18:32:26,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-22 18:32:26,683 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) [2022-07-22 18:32:27,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:27,561 INFO L93 Difference]: Finished difference Result 254 states and 321 transitions. [2022-07-22 18:32:27,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 18:32:27,562 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 [2022-07-22 18:32:27,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:27,563 INFO L225 Difference]: With dead ends: 254 [2022-07-22 18:32:27,563 INFO L226 Difference]: Without dead ends: 240 [2022-07-22 18:32:27,563 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:27,564 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 668 mSDsluCounter, 1230 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 668 SdHoareTripleChecker+Valid, 1409 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:27,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [668 Valid, 1409 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 18:32:27,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2022-07-22 18:32:27,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 120. [2022-07-22 18:32:27,590 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) [2022-07-22 18:32:27,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 145 transitions. [2022-07-22 18:32:27,591 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 145 transitions. Word has length 56 [2022-07-22 18:32:27,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:27,591 INFO L495 AbstractCegarLoop]: Abstraction has 120 states and 145 transitions. [2022-07-22 18:32:27,591 INFO L496 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) [2022-07-22 18:32:27,592 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 145 transitions. [2022-07-22 18:32:27,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 18:32:27,592 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:27,592 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:27,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 18:32:27,593 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:27,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:27,593 INFO L85 PathProgramCache]: Analyzing trace with hash 1511387265, now seen corresponding path program 1 times [2022-07-22 18:32:27,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:27,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737971484] [2022-07-22 18:32:27,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:27,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:27,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:27,770 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:27,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:27,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737971484] [2022-07-22 18:32:27,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737971484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:27,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:27,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 18:32:27,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230488467] [2022-07-22 18:32:27,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:27,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 18:32:27,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:27,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 18:32:27,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-22 18:32:27,772 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) [2022-07-22 18:32:28,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:28,415 INFO L93 Difference]: Finished difference Result 368 states and 496 transitions. [2022-07-22 18:32:28,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-22 18:32:28,415 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 [2022-07-22 18:32:28,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:28,417 INFO L225 Difference]: With dead ends: 368 [2022-07-22 18:32:28,417 INFO L226 Difference]: Without dead ends: 350 [2022-07-22 18:32:28,417 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:28,418 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 974 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:28,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [974 Valid, 947 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 18:32:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-22 18:32:28,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 102. [2022-07-22 18:32:28,452 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) [2022-07-22 18:32:28,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 126 transitions. [2022-07-22 18:32:28,452 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 126 transitions. Word has length 56 [2022-07-22 18:32:28,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:28,453 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 126 transitions. [2022-07-22 18:32:28,453 INFO L496 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) [2022-07-22 18:32:28,453 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 126 transitions. [2022-07-22 18:32:28,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 18:32:28,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:28,454 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:28,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 18:32:28,454 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:28,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:28,455 INFO L85 PathProgramCache]: Analyzing trace with hash 2042294308, now seen corresponding path program 1 times [2022-07-22 18:32:28,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:28,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544869300] [2022-07-22 18:32:28,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:28,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:28,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:28,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:28,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544869300] [2022-07-22 18:32:28,498 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544869300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:28,498 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:28,498 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:32:28,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358783831] [2022-07-22 18:32:28,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:28,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:32:28,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:28,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:32:28,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:32:28,500 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) [2022-07-22 18:32:28,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:28,694 INFO L93 Difference]: Finished difference Result 360 states and 504 transitions. [2022-07-22 18:32:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 18:32:28,694 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 [2022-07-22 18:32:28,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:28,696 INFO L225 Difference]: With dead ends: 360 [2022-07-22 18:32:28,696 INFO L226 Difference]: Without dead ends: 317 [2022-07-22 18:32:28,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:32:28,697 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 479 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:32:28,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [479 Valid, 599 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:32:28,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-22 18:32:28,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 143. [2022-07-22 18:32:28,751 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) [2022-07-22 18:32:28,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 186 transitions. [2022-07-22 18:32:28,751 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 186 transitions. Word has length 73 [2022-07-22 18:32:28,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:28,752 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 186 transitions. [2022-07-22 18:32:28,752 INFO L496 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) [2022-07-22 18:32:28,752 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 186 transitions. [2022-07-22 18:32:28,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 18:32:28,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:28,753 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:28,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 18:32:28,753 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:28,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:28,753 INFO L85 PathProgramCache]: Analyzing trace with hash -786943772, now seen corresponding path program 1 times [2022-07-22 18:32:28,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:28,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213396489] [2022-07-22 18:32:28,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:28,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:28,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:28,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:28,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213396489] [2022-07-22 18:32:28,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213396489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:28,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:28,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:32:28,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076409233] [2022-07-22 18:32:28,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:28,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:32:28,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:28,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:32:28,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:32:28,801 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) [2022-07-22 18:32:29,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:29,013 INFO L93 Difference]: Finished difference Result 438 states and 616 transitions. [2022-07-22 18:32:29,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:32:29,013 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 [2022-07-22 18:32:29,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:29,016 INFO L225 Difference]: With dead ends: 438 [2022-07-22 18:32:29,016 INFO L226 Difference]: Without dead ends: 354 [2022-07-22 18:32:29,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:32:29,017 INFO L413 NwaCegarLoop]: 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 [2022-07-22 18:32:29,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 419 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:32:29,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-07-22 18:32:29,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 225. [2022-07-22 18:32:29,123 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) [2022-07-22 18:32:29,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 307 transitions. [2022-07-22 18:32:29,124 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 307 transitions. Word has length 75 [2022-07-22 18:32:29,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:29,124 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 307 transitions. [2022-07-22 18:32:29,124 INFO L496 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) [2022-07-22 18:32:29,125 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 307 transitions. [2022-07-22 18:32:29,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 18:32:29,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:29,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:29,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 18:32:29,128 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:29,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:29,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1322322984, now seen corresponding path program 1 times [2022-07-22 18:32:29,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:29,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17179753] [2022-07-22 18:32:29,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:29,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:29,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:29,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:29,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17179753] [2022-07-22 18:32:29,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17179753] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:29,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:29,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:32:29,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700837324] [2022-07-22 18:32:29,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:29,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:32:29,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:29,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:32:29,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:32:29,188 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) [2022-07-22 18:32:29,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:29,451 INFO L93 Difference]: Finished difference Result 520 states and 737 transitions. [2022-07-22 18:32:29,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:32:29,452 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 [2022-07-22 18:32:29,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:29,454 INFO L225 Difference]: With dead ends: 520 [2022-07-22 18:32:29,454 INFO L226 Difference]: Without dead ends: 436 [2022-07-22 18:32:29,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:32:29,455 INFO L413 NwaCegarLoop]: 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 [2022-07-22 18:32:29,456 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 430 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:32:29,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-07-22 18:32:29,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 348. [2022-07-22 18:32:29,633 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) [2022-07-22 18:32:29,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 488 transitions. [2022-07-22 18:32:29,634 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 488 transitions. Word has length 75 [2022-07-22 18:32:29,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:29,634 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 488 transitions. [2022-07-22 18:32:29,635 INFO L496 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) [2022-07-22 18:32:29,635 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 488 transitions. [2022-07-22 18:32:29,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 18:32:29,635 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:29,636 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:29,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 18:32:29,636 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:29,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:29,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1446907099, now seen corresponding path program 1 times [2022-07-22 18:32:29,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:29,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748095472] [2022-07-22 18:32:29,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:29,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:29,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:29,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748095472] [2022-07-22 18:32:29,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748095472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:29,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:29,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:32:29,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752336923] [2022-07-22 18:32:29,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:29,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:32:29,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:29,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:32:29,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:32:29,670 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) [2022-07-22 18:32:29,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:29,862 INFO L93 Difference]: Finished difference Result 639 states and 914 transitions. [2022-07-22 18:32:29,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:32:29,862 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 [2022-07-22 18:32:29,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:29,864 INFO L225 Difference]: With dead ends: 639 [2022-07-22 18:32:29,864 INFO L226 Difference]: Without dead ends: 350 [2022-07-22 18:32:29,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:32:29,865 INFO L413 NwaCegarLoop]: 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 [2022-07-22 18:32:29,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 200 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:32:29,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2022-07-22 18:32:30,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 348. [2022-07-22 18:32:30,041 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) [2022-07-22 18:32:30,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 484 transitions. [2022-07-22 18:32:30,043 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 484 transitions. Word has length 75 [2022-07-22 18:32:30,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:30,043 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 484 transitions. [2022-07-22 18:32:30,043 INFO L496 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) [2022-07-22 18:32:30,043 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 484 transitions. [2022-07-22 18:32:30,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 18:32:30,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:30,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:30,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 18:32:30,045 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:30,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:30,045 INFO L85 PathProgramCache]: Analyzing trace with hash 2078767204, now seen corresponding path program 1 times [2022-07-22 18:32:30,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:30,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398709813] [2022-07-22 18:32:30,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:30,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:30,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:30,099 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:30,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398709813] [2022-07-22 18:32:30,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398709813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:30,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:30,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:32:30,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976809706] [2022-07-22 18:32:30,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:30,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:32:30,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:30,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:32:30,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:32:30,101 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) [2022-07-22 18:32:30,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:30,419 INFO L93 Difference]: Finished difference Result 881 states and 1251 transitions. [2022-07-22 18:32:30,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:32:30,420 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 [2022-07-22 18:32:30,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:30,422 INFO L225 Difference]: With dead ends: 881 [2022-07-22 18:32:30,422 INFO L226 Difference]: Without dead ends: 592 [2022-07-22 18:32:30,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:32:30,424 INFO L413 NwaCegarLoop]: 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 [2022-07-22 18:32:30,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 283 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:32:30,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-07-22 18:32:30,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 590. [2022-07-22 18:32:30,697 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) [2022-07-22 18:32:30,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 815 transitions. [2022-07-22 18:32:30,698 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 815 transitions. Word has length 75 [2022-07-22 18:32:30,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:30,699 INFO L495 AbstractCegarLoop]: Abstraction has 590 states and 815 transitions. [2022-07-22 18:32:30,699 INFO L496 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) [2022-07-22 18:32:30,699 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 815 transitions. [2022-07-22 18:32:30,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-22 18:32:30,700 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:30,700 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:30,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 18:32:30,700 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:30,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:30,701 INFO L85 PathProgramCache]: Analyzing trace with hash 95104542, now seen corresponding path program 1 times [2022-07-22 18:32:30,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:30,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564888407] [2022-07-22 18:32:30,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:30,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:30,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:30,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:30,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564888407] [2022-07-22 18:32:30,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564888407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:30,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:30,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:32:30,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272862732] [2022-07-22 18:32:30,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:30,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:32:30,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:30,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:32:30,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:32:30,745 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) [2022-07-22 18:32:31,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:31,309 INFO L93 Difference]: Finished difference Result 1051 states and 1467 transitions. [2022-07-22 18:32:31,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:32:31,310 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 [2022-07-22 18:32:31,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:31,313 INFO L225 Difference]: With dead ends: 1051 [2022-07-22 18:32:31,313 INFO L226 Difference]: Without dead ends: 898 [2022-07-22 18:32:31,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:32:31,315 INFO L413 NwaCegarLoop]: 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 [2022-07-22 18:32:31,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 461 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:32:31,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2022-07-22 18:32:31,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 741. [2022-07-22 18:32:31,671 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) [2022-07-22 18:32:31,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 1029 transitions. [2022-07-22 18:32:31,673 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 1029 transitions. Word has length 75 [2022-07-22 18:32:31,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:31,673 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 1029 transitions. [2022-07-22 18:32:31,673 INFO L496 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) [2022-07-22 18:32:31,673 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 1029 transitions. [2022-07-22 18:32:31,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-22 18:32:31,674 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:31,674 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:31,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 18:32:31,675 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:31,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:31,675 INFO L85 PathProgramCache]: Analyzing trace with hash -1963614716, now seen corresponding path program 1 times [2022-07-22 18:32:31,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:31,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [913643101] [2022-07-22 18:32:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:31,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:31,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:31,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:31,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [913643101] [2022-07-22 18:32:31,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [913643101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:31,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:31,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:32:31,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742507567] [2022-07-22 18:32:31,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:31,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:32:31,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:31,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:32:31,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:32:31,708 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) [2022-07-22 18:32:32,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:32,343 INFO L93 Difference]: Finished difference Result 1862 states and 2600 transitions. [2022-07-22 18:32:32,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:32:32,343 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 [2022-07-22 18:32:32,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:32,347 INFO L225 Difference]: With dead ends: 1862 [2022-07-22 18:32:32,347 INFO L226 Difference]: Without dead ends: 1180 [2022-07-22 18:32:32,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:32:32,349 INFO L413 NwaCegarLoop]: 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 [2022-07-22 18:32:32,349 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 266 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:32:32,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-07-22 18:32:32,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 1106. [2022-07-22 18:32:32,833 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) [2022-07-22 18:32:32,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1525 transitions. [2022-07-22 18:32:32,836 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1525 transitions. Word has length 76 [2022-07-22 18:32:32,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:32,836 INFO L495 AbstractCegarLoop]: Abstraction has 1106 states and 1525 transitions. [2022-07-22 18:32:32,836 INFO L496 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) [2022-07-22 18:32:32,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1525 transitions. [2022-07-22 18:32:32,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 18:32:32,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:32,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:32,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 18:32:32,838 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:32,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:32,838 INFO L85 PathProgramCache]: Analyzing trace with hash -628172474, now seen corresponding path program 1 times [2022-07-22 18:32:32,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:32,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009098198] [2022-07-22 18:32:32,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:32,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:32,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:32,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:32,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:32,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009098198] [2022-07-22 18:32:32,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009098198] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:32,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:32,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:32:32,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220863855] [2022-07-22 18:32:32,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:32,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:32:32,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:32,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:32:32,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:32:32,871 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) [2022-07-22 18:32:33,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:33,761 INFO L93 Difference]: Finished difference Result 3092 states and 4260 transitions. [2022-07-22 18:32:33,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:32:33,761 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 [2022-07-22 18:32:33,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:33,767 INFO L225 Difference]: With dead ends: 3092 [2022-07-22 18:32:33,767 INFO L226 Difference]: Without dead ends: 2045 [2022-07-22 18:32:33,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:32:33,769 INFO L413 NwaCegarLoop]: 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 [2022-07-22 18:32:33,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 265 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:32:33,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2022-07-22 18:32:34,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 1935. [2022-07-22 18:32:34,690 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) [2022-07-22 18:32:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1935 states to 1935 states and 2635 transitions. [2022-07-22 18:32:34,694 INFO L78 Accepts]: Start accepts. Automaton has 1935 states and 2635 transitions. Word has length 77 [2022-07-22 18:32:34,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:34,694 INFO L495 AbstractCegarLoop]: Abstraction has 1935 states and 2635 transitions. [2022-07-22 18:32:34,694 INFO L496 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) [2022-07-22 18:32:34,694 INFO L276 IsEmpty]: Start isEmpty. Operand 1935 states and 2635 transitions. [2022-07-22 18:32:34,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 18:32:34,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:34,695 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:34,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-22 18:32:34,696 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:34,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:34,696 INFO L85 PathProgramCache]: Analyzing trace with hash -763788569, now seen corresponding path program 1 times [2022-07-22 18:32:34,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:34,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036716138] [2022-07-22 18:32:34,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:34,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:34,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:34,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:34,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:34,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036716138] [2022-07-22 18:32:34,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036716138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:34,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:34,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:32:34,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226212503] [2022-07-22 18:32:34,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:34,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:32:34,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:34,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:32:34,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:32:34,730 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) [2022-07-22 18:32:36,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:36,302 INFO L93 Difference]: Finished difference Result 5471 states and 7401 transitions. [2022-07-22 18:32:36,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:32:36,302 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 [2022-07-22 18:32:36,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:36,311 INFO L225 Difference]: With dead ends: 5471 [2022-07-22 18:32:36,311 INFO L226 Difference]: Without dead ends: 3595 [2022-07-22 18:32:36,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:32:36,313 INFO L413 NwaCegarLoop]: 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 [2022-07-22 18:32:36,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 263 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:32:36,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3595 states. [2022-07-22 18:32:37,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3595 to 3377. [2022-07-22 18:32:37,969 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) [2022-07-22 18:32:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4504 transitions. [2022-07-22 18:32:37,976 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4504 transitions. Word has length 78 [2022-07-22 18:32:37,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:37,976 INFO L495 AbstractCegarLoop]: Abstraction has 3377 states and 4504 transitions. [2022-07-22 18:32:37,976 INFO L496 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) [2022-07-22 18:32:37,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4504 transitions. [2022-07-22 18:32:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 18:32:37,977 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:37,977 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:37,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-22 18:32:37,978 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:37,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:37,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1461539563, now seen corresponding path program 1 times [2022-07-22 18:32:37,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:37,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016400556] [2022-07-22 18:32:37,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:37,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:38,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:38,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:38,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016400556] [2022-07-22 18:32:38,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016400556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:38,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:38,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:32:38,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821292806] [2022-07-22 18:32:38,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:38,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:32:38,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:38,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:32:38,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:32:38,028 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) [2022-07-22 18:32:40,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:40,582 INFO L93 Difference]: Finished difference Result 5221 states and 6939 transitions. [2022-07-22 18:32:40,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:32:40,583 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 [2022-07-22 18:32:40,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:40,594 INFO L225 Difference]: With dead ends: 5221 [2022-07-22 18:32:40,594 INFO L226 Difference]: Without dead ends: 5219 [2022-07-22 18:32:40,595 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:32:40,596 INFO L413 NwaCegarLoop]: 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 [2022-07-22 18:32:40,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 629 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:32:40,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5219 states. [2022-07-22 18:32:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5219 to 3473. [2022-07-22 18:32:42,258 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) [2022-07-22 18:32:42,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3473 states to 3473 states and 4560 transitions. [2022-07-22 18:32:42,264 INFO L78 Accepts]: Start accepts. Automaton has 3473 states and 4560 transitions. Word has length 79 [2022-07-22 18:32:42,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:42,264 INFO L495 AbstractCegarLoop]: Abstraction has 3473 states and 4560 transitions. [2022-07-22 18:32:42,264 INFO L496 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) [2022-07-22 18:32:42,265 INFO L276 IsEmpty]: Start isEmpty. Operand 3473 states and 4560 transitions. [2022-07-22 18:32:42,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-22 18:32:42,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:42,265 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:32:42,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-22 18:32:42,266 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:42,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:42,266 INFO L85 PathProgramCache]: Analyzing trace with hash 965347417, now seen corresponding path program 1 times [2022-07-22 18:32:42,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:42,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768025014] [2022-07-22 18:32:42,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:42,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:42,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:42,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:42,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:42,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768025014] [2022-07-22 18:32:42,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768025014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:32:42,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:32:42,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:32:42,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010254313] [2022-07-22 18:32:42,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:32:42,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:32:42,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:42,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:32:42,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:32:42,300 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) [2022-07-22 18:32:44,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:32:44,002 INFO L93 Difference]: Finished difference Result 7021 states and 9234 transitions. [2022-07-22 18:32:44,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:32:44,003 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 [2022-07-22 18:32:44,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:32:44,012 INFO L225 Difference]: With dead ends: 7021 [2022-07-22 18:32:44,012 INFO L226 Difference]: Without dead ends: 3607 [2022-07-22 18:32:44,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:32:44,016 INFO L413 NwaCegarLoop]: 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 [2022-07-22 18:32:44,017 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 216 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:32:44,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2022-07-22 18:32:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 3605. [2022-07-22 18:32:45,708 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) [2022-07-22 18:32:45,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 4660 transitions. [2022-07-22 18:32:45,715 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 4660 transitions. Word has length 79 [2022-07-22 18:32:45,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:32:45,715 INFO L495 AbstractCegarLoop]: Abstraction has 3605 states and 4660 transitions. [2022-07-22 18:32:45,715 INFO L496 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) [2022-07-22 18:32:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 4660 transitions. [2022-07-22 18:32:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 18:32:45,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:32:45,717 INFO L195 NwaCegarLoop]: 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] [2022-07-22 18:32:45,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-22 18:32:45,718 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:32:45,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:32:45,718 INFO L85 PathProgramCache]: Analyzing trace with hash -1381911094, now seen corresponding path program 1 times [2022-07-22 18:32:45,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:32:45,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961464194] [2022-07-22 18:32:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:45,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:32:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:45,841 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:45,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:32:45,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961464194] [2022-07-22 18:32:45,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961464194] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 18:32:45,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228023294] [2022-07-22 18:32:45,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:32:45,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:32:45,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:32:45,847 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) [2022-07-22 18:32:45,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 18:32:45,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:32:45,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-22 18:32:46,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 18:32:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:46,688 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 18:32:48,750 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:32:48,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228023294] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 18:32:48,750 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 18:32:48,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 26 [2022-07-22 18:32:48,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826670690] [2022-07-22 18:32:48,751 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 18:32:48,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 18:32:48,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:32:48,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 18:32:48,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-07-22 18:32:48,752 INFO L87 Difference]: Start difference. First operand 3605 states and 4660 transitions. Second operand has 27 states, 27 states have (on average 9.851851851851851) internal successors, (266), 26 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:33:12,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:33:12,321 INFO L93 Difference]: Finished difference Result 38133 states and 48312 transitions. [2022-07-22 18:33:12,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-07-22 18:33:12,322 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.851851851851851) internal successors, (266), 26 states have internal predecessors, (266), 0 states have call successors, (0), 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 101 [2022-07-22 18:33:12,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:33:12,408 INFO L225 Difference]: With dead ends: 38133 [2022-07-22 18:33:12,408 INFO L226 Difference]: Without dead ends: 34587 [2022-07-22 18:33:12,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5290 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=3066, Invalid=12684, Unknown=0, NotChecked=0, Total=15750 [2022-07-22 18:33:12,429 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 4799 mSDsluCounter, 1675 mSDsCounter, 0 mSdLazyCounter, 1664 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4799 SdHoareTripleChecker+Valid, 1808 SdHoareTripleChecker+Invalid, 1870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:33:12,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4799 Valid, 1808 Invalid, 1870 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1664 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-22 18:33:12,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34587 states. [2022-07-22 18:33:16,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34587 to 7680. [2022-07-22 18:33:16,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7680 states, 7679 states have (on average 1.2862351868732909) internal successors, (9877), 7679 states have internal predecessors, (9877), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:33:16,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7680 states to 7680 states and 9877 transitions. [2022-07-22 18:33:16,713 INFO L78 Accepts]: Start accepts. Automaton has 7680 states and 9877 transitions. Word has length 101 [2022-07-22 18:33:16,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:33:16,714 INFO L495 AbstractCegarLoop]: Abstraction has 7680 states and 9877 transitions. [2022-07-22 18:33:16,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.851851851851851) internal successors, (266), 26 states have internal predecessors, (266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:33:16,714 INFO L276 IsEmpty]: Start isEmpty. Operand 7680 states and 9877 transitions. [2022-07-22 18:33:16,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 18:33:16,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:33:16,717 INFO L195 NwaCegarLoop]: 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, 1] [2022-07-22 18:33:16,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 18:33:16,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:33:16,942 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:33:16,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:33:16,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1466079819, now seen corresponding path program 1 times [2022-07-22 18:33:16,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:33:16,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557376408] [2022-07-22 18:33:16,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:33:16,943 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:33:16,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:33:16,986 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-22 18:33:16,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:33:16,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557376408] [2022-07-22 18:33:16,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557376408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:33:16,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:33:16,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:33:16,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914504133] [2022-07-22 18:33:16,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:33:16,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:33:16,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:33:16,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:33:16,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:33:16,989 INFO L87 Difference]: Start difference. First operand 7680 states and 9877 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:33:20,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:33:20,791 INFO L93 Difference]: Finished difference Result 14658 states and 18940 transitions. [2022-07-22 18:33:20,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:33:20,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 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 102 [2022-07-22 18:33:20,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:33:20,807 INFO L225 Difference]: With dead ends: 14658 [2022-07-22 18:33:20,808 INFO L226 Difference]: Without dead ends: 7044 [2022-07-22 18:33:20,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:33:20,817 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 82 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:33:20,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 103 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:33:20,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7044 states. [2022-07-22 18:33:24,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7044 to 7044. [2022-07-22 18:33:24,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7044 states, 7043 states have (on average 1.2808462302995882) internal successors, (9021), 7043 states have internal predecessors, (9021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:33:24,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7044 states to 7044 states and 9021 transitions. [2022-07-22 18:33:24,659 INFO L78 Accepts]: Start accepts. Automaton has 7044 states and 9021 transitions. Word has length 102 [2022-07-22 18:33:24,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:33:24,660 INFO L495 AbstractCegarLoop]: Abstraction has 7044 states and 9021 transitions. [2022-07-22 18:33:24,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:33:24,660 INFO L276 IsEmpty]: Start isEmpty. Operand 7044 states and 9021 transitions. [2022-07-22 18:33:24,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-22 18:33:24,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:33:24,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:33:24,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-22 18:33:24,664 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:33:24,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:33:24,664 INFO L85 PathProgramCache]: Analyzing trace with hash 1423038550, now seen corresponding path program 1 times [2022-07-22 18:33:24,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:33:24,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529888638] [2022-07-22 18:33:24,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:33:24,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:33:24,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:33:24,763 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 18:33:24,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:33:24,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529888638] [2022-07-22 18:33:24,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529888638] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:33:24,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:33:24,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:33:24,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970836203] [2022-07-22 18:33:24,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:33:24,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:33:24,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:33:24,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:33:24,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:33:24,765 INFO L87 Difference]: Start difference. First operand 7044 states and 9021 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:33:32,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:33:32,507 INFO L93 Difference]: Finished difference Result 21250 states and 27175 transitions. [2022-07-22 18:33:32,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 18:33:32,507 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 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 102 [2022-07-22 18:33:32,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:33:32,528 INFO L225 Difference]: With dead ends: 21250 [2022-07-22 18:33:32,528 INFO L226 Difference]: Without dead ends: 14266 [2022-07-22 18:33:32,538 INFO L412 NwaCegarLoop]: 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 [2022-07-22 18:33:32,539 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 433 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:33:32,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 375 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:33:32,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14266 states. [2022-07-22 18:33:36,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14266 to 7044. [2022-07-22 18:33:36,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7044 states, 7043 states have (on average 1.2807042453499928) internal successors, (9020), 7043 states have internal predecessors, (9020), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:33:36,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7044 states to 7044 states and 9020 transitions. [2022-07-22 18:33:36,305 INFO L78 Accepts]: Start accepts. Automaton has 7044 states and 9020 transitions. Word has length 102 [2022-07-22 18:33:36,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:33:36,306 INFO L495 AbstractCegarLoop]: Abstraction has 7044 states and 9020 transitions. [2022-07-22 18:33:36,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:33:36,306 INFO L276 IsEmpty]: Start isEmpty. Operand 7044 states and 9020 transitions. [2022-07-22 18:33:36,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-22 18:33:36,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:33:36,309 INFO L195 NwaCegarLoop]: 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, 1, 1] [2022-07-22 18:33:36,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-22 18:33:36,309 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:33:36,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:33:36,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1774298759, now seen corresponding path program 1 times [2022-07-22 18:33:36,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:33:36,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140216391] [2022-07-22 18:33:36,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:33:36,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:33:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:33:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:33:36,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:33:36,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140216391] [2022-07-22 18:33:36,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140216391] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 18:33:36,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [65306922] [2022-07-22 18:33:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:33:36,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:33:36,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:33:36,487 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 18:33:36,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 18:33:36,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:33:36,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 18:33:36,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 18:34:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 3 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:34:06,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 18:34:08,205 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:34:08,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [65306922] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 18:34:08,206 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 18:34:08,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 29 [2022-07-22 18:34:08,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353841891] [2022-07-22 18:34:08,206 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 18:34:08,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-22 18:34:08,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:34:08,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-22 18:34:08,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=756, Unknown=14, NotChecked=0, Total=870 [2022-07-22 18:34:08,208 INFO L87 Difference]: Start difference. First operand 7044 states and 9020 transitions. Second operand has 30 states, 30 states have (on average 9.366666666666667) internal successors, (281), 29 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:36:16,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:36:16,214 INFO L93 Difference]: Finished difference Result 11043 states and 14028 transitions. [2022-07-22 18:36:16,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-22 18:36:16,215 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.366666666666667) internal successors, (281), 29 states have internal predecessors, (281), 0 states have call successors, (0), 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 103 [2022-07-22 18:36:16,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:36:16,228 INFO L225 Difference]: With dead ends: 11043 [2022-07-22 18:36:16,228 INFO L226 Difference]: Without dead ends: 7553 [2022-07-22 18:36:16,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 153.2s TimeCoverageRelationStatistics Valid=569, Invalid=2717, Unknown=20, NotChecked=0, Total=3306 [2022-07-22 18:36:16,235 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 853 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 84 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 84 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 18:36:16,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 1272 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [84 Valid, 712 Invalid, 0 Unknown, 137 Unchecked, 0.5s Time] [2022-07-22 18:36:16,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7553 states. [2022-07-22 18:36:19,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7553 to 7074. [2022-07-22 18:36:19,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7074 states, 7073 states have (on average 1.2799377916018662) internal successors, (9053), 7073 states have internal predecessors, (9053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:36:19,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7074 states to 7074 states and 9053 transitions. [2022-07-22 18:36:19,945 INFO L78 Accepts]: Start accepts. Automaton has 7074 states and 9053 transitions. Word has length 103 [2022-07-22 18:36:19,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:36:19,945 INFO L495 AbstractCegarLoop]: Abstraction has 7074 states and 9053 transitions. [2022-07-22 18:36:19,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.366666666666667) internal successors, (281), 29 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:36:19,946 INFO L276 IsEmpty]: Start isEmpty. Operand 7074 states and 9053 transitions. [2022-07-22 18:36:19,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-22 18:36:19,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:36:19,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:36:19,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 18:36:20,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-07-22 18:36:20,173 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-22 18:36:20,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:36:20,173 INFO L85 PathProgramCache]: Analyzing trace with hash 481296185, now seen corresponding path program 1 times [2022-07-22 18:36:20,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:36:20,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399220970] [2022-07-22 18:36:20,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:36:20,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:36:20,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:36:20,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:36:20,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:36:20,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399220970] [2022-07-22 18:36:20,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399220970] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 18:36:20,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525318527] [2022-07-22 18:36:20,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:36:20,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 18:36:20,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:36:20,410 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 18:36:20,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 18:36:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:36:20,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-22 18:36:20,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 18:36:21,837 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:36:21,838 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 18:36:24,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:36:24,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525318527] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 18:36:24,767 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 18:36:24,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17, 18] total 44 [2022-07-22 18:36:24,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632726093] [2022-07-22 18:36:24,768 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 18:36:24,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2022-07-22 18:36:24,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:36:24,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2022-07-22 18:36:24,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=1751, Unknown=0, NotChecked=0, Total=1892 [2022-07-22 18:36:24,770 INFO L87 Difference]: Start difference. First operand 7074 states and 9053 transitions. Second operand has 44 states, 44 states have (on average 6.7272727272727275) internal successors, (296), 44 states have internal predecessors, (296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)