./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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.3.1.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 92f84e18d7f713cb4a67277cb892c6222831b93652f8c37aad43582713426f96 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 18:53:06,606 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 18:53:06,611 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 18:53:06,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 18:53:06,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 18:53:06,663 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 18:53:06,667 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 18:53:06,671 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 18:53:06,672 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 18:53:06,675 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 18:53:06,676 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 18:53:06,678 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 18:53:06,678 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 18:53:06,680 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 18:53:06,680 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 18:53:06,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 18:53:06,682 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 18:53:06,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 18:53:06,686 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 18:53:06,687 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 18:53:06,690 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 18:53:06,691 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 18:53:06,692 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 18:53:06,692 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 18:53:06,693 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 18:53:06,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 18:53:06,700 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 18:53:06,701 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 18:53:06,701 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 18:53:06,702 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 18:53:06,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 18:53:06,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 18:53:06,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 18:53:06,704 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 18:53:06,705 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 18:53:06,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 18:53:06,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 18:53:06,706 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 18:53:06,706 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 18:53:06,706 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 18:53:06,707 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 18:53:06,708 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 18:53:06,710 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 18:53:06,730 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 18:53:06,735 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 18:53:06,735 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 18:53:06,735 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 18:53:06,736 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 18:53:06,736 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 18:53:06,736 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 18:53:06,736 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 18:53:06,736 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 18:53:06,737 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 18:53:06,737 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 18:53:06,737 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 18:53:06,737 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 18:53:06,738 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 18:53:06,738 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 18:53:06,738 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 18:53:06,738 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 18:53:06,738 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 18:53:06,738 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 18:53:06,738 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 18:53:06,739 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 18:53:06,739 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 18:53:06,739 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 18:53:06,739 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 18:53:06,739 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:53:06,739 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 18:53:06,740 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 18:53:06,740 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 18:53:06,740 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 18:53:06,740 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 18:53:06,740 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 18:53:06,740 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 18:53:06,741 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 18:53:06,741 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 92f84e18d7f713cb4a67277cb892c6222831b93652f8c37aad43582713426f96 [2022-07-13 18:53:06,919 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 18:53:06,938 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 18:53:06,939 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 18:53:06,940 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 18:53:06,941 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 18:53:06,941 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-07-13 18:53:07,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7f14ce90/d01753a1dcf34d37a1d9715e6bee345c/FLAG95bfd458d [2022-07-13 18:53:07,399 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 18:53:07,401 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-07-13 18:53:07,412 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7f14ce90/d01753a1dcf34d37a1d9715e6bee345c/FLAG95bfd458d [2022-07-13 18:53:07,786 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7f14ce90/d01753a1dcf34d37a1d9715e6bee345c [2022-07-13 18:53:07,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 18:53:07,789 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 18:53:07,790 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 18:53:07,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 18:53:07,798 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 18:53:07,798 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:53:07" (1/1) ... [2022-07-13 18:53:07,799 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dd1c50c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:07, skipping insertion in model container [2022-07-13 18:53:07,799 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 06:53:07" (1/1) ... [2022-07-13 18:53:07,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 18:53:07,847 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 18:53:08,024 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7545,7558] [2022-07-13 18:53:08,036 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10452,10465] [2022-07-13 18:53:08,041 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11543,11556] [2022-07-13 18:53:08,044 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12149,12162] [2022-07-13 18:53:08,049 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13568,13581] [2022-07-13 18:53:08,052 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14174,14187] [2022-07-13 18:53:08,056 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15145,15158] [2022-07-13 18:53:08,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:53:08,091 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 18:53:08,115 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[7545,7558] [2022-07-13 18:53:08,122 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[10452,10465] [2022-07-13 18:53:08,125 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[11543,11556] [2022-07-13 18:53:08,127 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[12149,12162] [2022-07-13 18:53:08,130 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[13568,13581] [2022-07-13 18:53:08,132 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[14174,14187] [2022-07-13 18:53:08,135 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.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c[15145,15158] [2022-07-13 18:53:08,151 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 18:53:08,162 INFO L208 MainTranslator]: Completed translation [2022-07-13 18:53:08,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:08 WrapperNode [2022-07-13 18:53:08,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 18:53:08,164 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 18:53:08,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 18:53:08,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 18:53:08,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:08" (1/1) ... [2022-07-13 18:53:08,193 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:08" (1/1) ... [2022-07-13 18:53:08,232 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1020 [2022-07-13 18:53:08,233 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 18:53:08,248 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 18:53:08,248 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 18:53:08,248 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 18:53:08,254 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:08" (1/1) ... [2022-07-13 18:53:08,254 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:08" (1/1) ... [2022-07-13 18:53:08,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:08" (1/1) ... [2022-07-13 18:53:08,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:08" (1/1) ... [2022-07-13 18:53:08,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:08" (1/1) ... [2022-07-13 18:53:08,280 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:08" (1/1) ... [2022-07-13 18:53:08,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:08" (1/1) ... [2022-07-13 18:53:08,298 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 18:53:08,299 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 18:53:08,306 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 18:53:08,306 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 18:53:08,307 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:08" (1/1) ... [2022-07-13 18:53:08,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 18:53:08,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:53:08,332 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) [2022-07-13 18:53:08,334 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 [2022-07-13 18:53:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 18:53:08,356 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 18:53:08,357 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 18:53:08,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 18:53:08,429 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 18:53:08,430 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 18:53:09,054 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 18:53:09,061 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 18:53:09,061 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 18:53:09,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:53:09 BoogieIcfgContainer [2022-07-13 18:53:09,063 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 18:53:09,067 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 18:53:09,067 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 18:53:09,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 18:53:09,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 06:53:07" (1/3) ... [2022-07-13 18:53:09,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3e9384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:53:09, skipping insertion in model container [2022-07-13 18:53:09,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 06:53:08" (2/3) ... [2022-07-13 18:53:09,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3e9384 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 06:53:09, skipping insertion in model container [2022-07-13 18:53:09,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 06:53:09" (3/3) ... [2022-07-13 18:53:09,072 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2022-07-13 18:53:09,087 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 18:53:09,088 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-07-13 18:53:09,132 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 18:53:09,137 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@43da6952, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6f9285b3 [2022-07-13 18:53:09,137 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-13 18:53:09,141 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) [2022-07-13 18:53:09,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-07-13 18:53:09,155 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:09,156 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] [2022-07-13 18:53:09,156 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)] === [2022-07-13 18:53:09,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:09,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1485336045, now seen corresponding path program 1 times [2022-07-13 18:53:09,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:09,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144745002] [2022-07-13 18:53:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:09,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:09,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:09,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:09,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144745002] [2022-07-13 18:53:09,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144745002] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:09,430 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:09,430 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:53:09,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284205981] [2022-07-13 18:53:09,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:09,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:53:09,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:09,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:53:09,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:53:09,461 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) [2022-07-13 18:53:09,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:09,706 INFO L93 Difference]: Finished difference Result 423 states and 706 transitions. [2022-07-13 18:53:09,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:53:09,708 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 [2022-07-13 18:53:09,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:09,723 INFO L225 Difference]: With dead ends: 423 [2022-07-13 18:53:09,723 INFO L226 Difference]: Without dead ends: 259 [2022-07-13 18:53:09,726 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 [2022-07-13 18:53:09,729 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 1105 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 311 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:09,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 311 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:53:09,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-07-13 18:53:09,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 235. [2022-07-13 18:53:09,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 228 states have (on average 1.3421052631578947) internal successors, (306), 234 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:09,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 306 transitions. [2022-07-13 18:53:09,827 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 306 transitions. Word has length 47 [2022-07-13 18:53:09,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:09,828 INFO L495 AbstractCegarLoop]: Abstraction has 235 states and 306 transitions. [2022-07-13 18:53:09,828 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) [2022-07-13 18:53:09,828 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 306 transitions. [2022-07-13 18:53:09,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-13 18:53:09,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:09,830 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] [2022-07-13 18:53:09,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 18:53:09,830 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)] === [2022-07-13 18:53:09,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:09,831 INFO L85 PathProgramCache]: Analyzing trace with hash 200422799, now seen corresponding path program 1 times [2022-07-13 18:53:09,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:09,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980501772] [2022-07-13 18:53:09,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:09,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:09,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:09,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:09,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980501772] [2022-07-13 18:53:09,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980501772] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:09,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:09,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:53:09,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167382857] [2022-07-13 18:53:09,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:09,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:53:09,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:09,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:53:09,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:53:09,891 INFO L87 Difference]: Start difference. First operand 235 states and 306 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) [2022-07-13 18:53:09,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:09,988 INFO L93 Difference]: Finished difference Result 418 states and 557 transitions. [2022-07-13 18:53:09,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:53:09,989 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 [2022-07-13 18:53:09,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:09,990 INFO L225 Difference]: With dead ends: 418 [2022-07-13 18:53:09,990 INFO L226 Difference]: Without dead ends: 222 [2022-07-13 18:53:09,991 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 [2022-07-13 18:53:09,992 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 554 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 96 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:09,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 131 Invalid, 96 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:53:09,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-13 18:53:10,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-07-13 18:53:10,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 215 states have (on average 1.344186046511628) internal successors, (289), 221 states have internal predecessors, (289), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 289 transitions. [2022-07-13 18:53:10,005 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 289 transitions. Word has length 48 [2022-07-13 18:53:10,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:10,005 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 289 transitions. [2022-07-13 18:53:10,005 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) [2022-07-13 18:53:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 289 transitions. [2022-07-13 18:53:10,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-07-13 18:53:10,011 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:10,011 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] [2022-07-13 18:53:10,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 18:53:10,012 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)] === [2022-07-13 18:53:10,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:10,012 INFO L85 PathProgramCache]: Analyzing trace with hash -2021523794, now seen corresponding path program 1 times [2022-07-13 18:53:10,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:10,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497348141] [2022-07-13 18:53:10,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:10,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:10,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:10,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:10,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:10,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497348141] [2022-07-13 18:53:10,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497348141] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:10,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:10,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 18:53:10,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889068522] [2022-07-13 18:53:10,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:10,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:53:10,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:10,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:53:10,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:53:10,083 INFO L87 Difference]: Start difference. First operand 222 states and 289 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) [2022-07-13 18:53:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:10,173 INFO L93 Difference]: Finished difference Result 405 states and 538 transitions. [2022-07-13 18:53:10,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:53:10,173 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 [2022-07-13 18:53:10,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:10,174 INFO L225 Difference]: With dead ends: 405 [2022-07-13 18:53:10,174 INFO L226 Difference]: Without dead ends: 217 [2022-07-13 18:53:10,175 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 [2022-07-13 18:53:10,176 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 516 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 516 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:10,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [516 Valid, 128 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:53:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-07-13 18:53:10,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 217. [2022-07-13 18:53:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 210 states have (on average 1.338095238095238) internal successors, (281), 216 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) [2022-07-13 18:53:10,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 281 transitions. [2022-07-13 18:53:10,188 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 281 transitions. Word has length 49 [2022-07-13 18:53:10,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:10,189 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 281 transitions. [2022-07-13 18:53:10,189 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) [2022-07-13 18:53:10,189 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 281 transitions. [2022-07-13 18:53:10,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-13 18:53:10,190 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:10,190 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] [2022-07-13 18:53:10,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 18:53:10,191 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)] === [2022-07-13 18:53:10,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:10,191 INFO L85 PathProgramCache]: Analyzing trace with hash 1243075504, now seen corresponding path program 1 times [2022-07-13 18:53:10,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:10,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568853781] [2022-07-13 18:53:10,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:10,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:10,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:10,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:10,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568853781] [2022-07-13 18:53:10,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568853781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:10,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:10,339 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:53:10,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388034577] [2022-07-13 18:53:10,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:10,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:53:10,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:10,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:53:10,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:53:10,344 INFO L87 Difference]: Start difference. First operand 217 states and 281 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) [2022-07-13 18:53:10,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:10,786 INFO L93 Difference]: Finished difference Result 532 states and 728 transitions. [2022-07-13 18:53:10,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:53:10,786 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 [2022-07-13 18:53:10,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:10,789 INFO L225 Difference]: With dead ends: 532 [2022-07-13 18:53:10,789 INFO L226 Difference]: Without dead ends: 527 [2022-07-13 18:53:10,790 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 [2022-07-13 18:53:10,795 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1207 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1207 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 503 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:10,796 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1207 Valid, 607 Invalid, 503 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:53:10,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2022-07-13 18:53:10,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 217. [2022-07-13 18:53:10,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 210 states have (on average 1.3333333333333333) internal successors, (280), 216 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 280 transitions. [2022-07-13 18:53:10,815 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 280 transitions. Word has length 50 [2022-07-13 18:53:10,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:10,816 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 280 transitions. [2022-07-13 18:53:10,816 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) [2022-07-13 18:53:10,816 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 280 transitions. [2022-07-13 18:53:10,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-13 18:53:10,817 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:10,817 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] [2022-07-13 18:53:10,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 18:53:10,817 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)] === [2022-07-13 18:53:10,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:10,818 INFO L85 PathProgramCache]: Analyzing trace with hash -1139694690, now seen corresponding path program 1 times [2022-07-13 18:53:10,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:10,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359524205] [2022-07-13 18:53:10,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:10,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:10,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:10,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:10,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359524205] [2022-07-13 18:53:10,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1359524205] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:10,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:10,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:53:10,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107442253] [2022-07-13 18:53:10,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:10,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:53:10,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:10,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:53:10,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:53:10,980 INFO L87 Difference]: Start difference. First operand 217 states and 280 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) [2022-07-13 18:53:11,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:11,398 INFO L93 Difference]: Finished difference Result 536 states and 731 transitions. [2022-07-13 18:53:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:53:11,398 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 [2022-07-13 18:53:11,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:11,401 INFO L225 Difference]: With dead ends: 536 [2022-07-13 18:53:11,403 INFO L226 Difference]: Without dead ends: 435 [2022-07-13 18:53:11,404 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 [2022-07-13 18:53:11,404 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 1030 mSDsluCounter, 666 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 811 SdHoareTripleChecker+Invalid, 622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:11,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 811 Invalid, 622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:53:11,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-07-13 18:53:11,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 217. [2022-07-13 18:53:11,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 210 states have (on average 1.3285714285714285) internal successors, (279), 216 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 279 transitions. [2022-07-13 18:53:11,420 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 279 transitions. Word has length 50 [2022-07-13 18:53:11,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:11,423 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 279 transitions. [2022-07-13 18:53:11,423 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) [2022-07-13 18:53:11,424 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 279 transitions. [2022-07-13 18:53:11,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-07-13 18:53:11,426 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:11,426 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] [2022-07-13 18:53:11,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 18:53:11,426 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)] === [2022-07-13 18:53:11,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:11,427 INFO L85 PathProgramCache]: Analyzing trace with hash 134088220, now seen corresponding path program 1 times [2022-07-13 18:53:11,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:11,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811529151] [2022-07-13 18:53:11,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:11,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:11,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:11,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:11,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811529151] [2022-07-13 18:53:11,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811529151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:11,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:11,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 18:53:11,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670213376] [2022-07-13 18:53:11,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:11,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 18:53:11,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:11,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 18:53:11,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-13 18:53:11,510 INFO L87 Difference]: Start difference. First operand 217 states and 279 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) [2022-07-13 18:53:11,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:11,730 INFO L93 Difference]: Finished difference Result 461 states and 610 transitions. [2022-07-13 18:53:11,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 18:53:11,730 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 [2022-07-13 18:53:11,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:11,732 INFO L225 Difference]: With dead ends: 461 [2022-07-13 18:53:11,732 INFO L226 Difference]: Without dead ends: 337 [2022-07-13 18:53:11,732 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 [2022-07-13 18:53:11,733 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 857 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:11,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [857 Valid, 369 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:53:11,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-07-13 18:53:11,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 217. [2022-07-13 18:53:11,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 210 states have (on average 1.3238095238095238) internal successors, (278), 216 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:11,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 278 transitions. [2022-07-13 18:53:11,760 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 278 transitions. Word has length 50 [2022-07-13 18:53:11,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:11,760 INFO L495 AbstractCegarLoop]: Abstraction has 217 states and 278 transitions. [2022-07-13 18:53:11,760 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) [2022-07-13 18:53:11,760 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 278 transitions. [2022-07-13 18:53:11,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-13 18:53:11,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:11,761 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] [2022-07-13 18:53:11,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 18:53:11,761 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)] === [2022-07-13 18:53:11,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:11,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1263855603, now seen corresponding path program 1 times [2022-07-13 18:53:11,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:11,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308456224] [2022-07-13 18:53:11,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:11,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:11,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:12,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:12,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:12,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308456224] [2022-07-13 18:53:12,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308456224] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:12,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:12,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 18:53:12,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311943257] [2022-07-13 18:53:12,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:12,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 18:53:12,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:12,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 18:53:12,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:53:12,033 INFO L87 Difference]: Start difference. First operand 217 states and 278 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) [2022-07-13 18:53:12,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:12,549 INFO L93 Difference]: Finished difference Result 447 states and 597 transitions. [2022-07-13 18:53:12,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:53:12,550 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 [2022-07-13 18:53:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:12,551 INFO L225 Difference]: With dead ends: 447 [2022-07-13 18:53:12,551 INFO L226 Difference]: Without dead ends: 359 [2022-07-13 18:53:12,552 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 [2022-07-13 18:53:12,552 INFO L413 NwaCegarLoop]: 161 mSDtfsCounter, 1052 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:12,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1052 Valid, 892 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:53:12,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-07-13 18:53:12,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 213. [2022-07-13 18:53:12,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 207 states have (on average 1.318840579710145) internal successors, (273), 212 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:12,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 273 transitions. [2022-07-13 18:53:12,573 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 273 transitions. Word has length 52 [2022-07-13 18:53:12,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:12,574 INFO L495 AbstractCegarLoop]: Abstraction has 213 states and 273 transitions. [2022-07-13 18:53:12,574 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) [2022-07-13 18:53:12,574 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 273 transitions. [2022-07-13 18:53:12,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-13 18:53:12,574 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:12,575 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] [2022-07-13 18:53:12,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 18:53:12,575 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)] === [2022-07-13 18:53:12,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:12,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1250594545, now seen corresponding path program 1 times [2022-07-13 18:53:12,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:12,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295093098] [2022-07-13 18:53:12,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:12,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:12,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:12,763 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:12,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:12,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295093098] [2022-07-13 18:53:12,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295093098] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:12,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:12,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 18:53:12,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683499379] [2022-07-13 18:53:12,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:12,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 18:53:12,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:12,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 18:53:12,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:53:12,765 INFO L87 Difference]: Start difference. First operand 213 states and 273 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) [2022-07-13 18:53:13,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:13,181 INFO L93 Difference]: Finished difference Result 311 states and 414 transitions. [2022-07-13 18:53:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 18:53:13,186 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 [2022-07-13 18:53:13,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:13,187 INFO L225 Difference]: With dead ends: 311 [2022-07-13 18:53:13,187 INFO L226 Difference]: Without dead ends: 216 [2022-07-13 18:53:13,188 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 [2022-07-13 18:53:13,188 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 470 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 470 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:13,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [470 Valid, 990 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:53:13,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2022-07-13 18:53:13,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 202. [2022-07-13 18:53:13,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 197 states have (on average 1.3197969543147208) internal successors, (260), 201 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 260 transitions. [2022-07-13 18:53:13,205 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 260 transitions. Word has length 52 [2022-07-13 18:53:13,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:13,206 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 260 transitions. [2022-07-13 18:53:13,206 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) [2022-07-13 18:53:13,206 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 260 transitions. [2022-07-13 18:53:13,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-13 18:53:13,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:13,207 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] [2022-07-13 18:53:13,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 18:53:13,207 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)] === [2022-07-13 18:53:13,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:13,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1706910886, now seen corresponding path program 1 times [2022-07-13 18:53:13,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:13,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022525618] [2022-07-13 18:53:13,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:13,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:13,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:13,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:13,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:13,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022525618] [2022-07-13 18:53:13,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022525618] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:13,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:13,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 18:53:13,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976035252] [2022-07-13 18:53:13,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:13,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 18:53:13,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:13,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 18:53:13,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:53:13,401 INFO L87 Difference]: Start difference. First operand 202 states and 260 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) [2022-07-13 18:53:13,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:13,851 INFO L93 Difference]: Finished difference Result 340 states and 445 transitions. [2022-07-13 18:53:13,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 18:53:13,852 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 [2022-07-13 18:53:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:13,853 INFO L225 Difference]: With dead ends: 340 [2022-07-13 18:53:13,853 INFO L226 Difference]: Without dead ends: 336 [2022-07-13 18:53:13,854 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 [2022-07-13 18:53:13,854 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 969 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:13,854 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 836 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:53:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2022-07-13 18:53:13,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 198. [2022-07-13 18:53:13,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 194 states have (on average 1.3195876288659794) internal successors, (256), 197 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 256 transitions. [2022-07-13 18:53:13,871 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 256 transitions. Word has length 52 [2022-07-13 18:53:13,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:13,871 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 256 transitions. [2022-07-13 18:53:13,871 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) [2022-07-13 18:53:13,872 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 256 transitions. [2022-07-13 18:53:13,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 18:53:13,872 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:13,872 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] [2022-07-13 18:53:13,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 18:53:13,872 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)] === [2022-07-13 18:53:13,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:13,873 INFO L85 PathProgramCache]: Analyzing trace with hash 190692674, now seen corresponding path program 1 times [2022-07-13 18:53:13,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:13,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666021301] [2022-07-13 18:53:13,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:13,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:13,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:14,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:14,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:14,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666021301] [2022-07-13 18:53:14,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666021301] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:14,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:14,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 18:53:14,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806807270] [2022-07-13 18:53:14,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:14,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 18:53:14,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:14,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 18:53:14,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:53:14,011 INFO L87 Difference]: Start difference. First operand 198 states and 256 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) [2022-07-13 18:53:14,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:14,686 INFO L93 Difference]: Finished difference Result 582 states and 794 transitions. [2022-07-13 18:53:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 18:53:14,686 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 [2022-07-13 18:53:14,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:14,688 INFO L225 Difference]: With dead ends: 582 [2022-07-13 18:53:14,688 INFO L226 Difference]: Without dead ends: 575 [2022-07-13 18:53:14,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=244, Invalid=626, Unknown=0, NotChecked=0, Total=870 [2022-07-13 18:53:14,689 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 1748 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1748 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 644 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:14,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1748 Valid, 582 Invalid, 644 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:53:14,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-07-13 18:53:14,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 202. [2022-07-13 18:53:14,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 198 states have (on average 1.3131313131313131) internal successors, (260), 201 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:14,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 260 transitions. [2022-07-13 18:53:14,712 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 260 transitions. Word has length 53 [2022-07-13 18:53:14,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:14,712 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 260 transitions. [2022-07-13 18:53:14,712 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) [2022-07-13 18:53:14,712 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 260 transitions. [2022-07-13 18:53:14,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 18:53:14,713 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:14,713 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] [2022-07-13 18:53:14,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 18:53:14,713 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)] === [2022-07-13 18:53:14,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:14,714 INFO L85 PathProgramCache]: Analyzing trace with hash -659119293, now seen corresponding path program 1 times [2022-07-13 18:53:14,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:14,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652602824] [2022-07-13 18:53:14,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:14,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:14,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:14,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652602824] [2022-07-13 18:53:14,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652602824] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:14,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:14,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:53:14,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840146291] [2022-07-13 18:53:14,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:14,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:53:14,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:14,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:53:14,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:53:14,790 INFO L87 Difference]: Start difference. First operand 202 states and 260 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) [2022-07-13 18:53:15,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:15,088 INFO L93 Difference]: Finished difference Result 339 states and 443 transitions. [2022-07-13 18:53:15,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 18:53:15,089 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 [2022-07-13 18:53:15,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:15,090 INFO L225 Difference]: With dead ends: 339 [2022-07-13 18:53:15,090 INFO L226 Difference]: Without dead ends: 332 [2022-07-13 18:53:15,091 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 [2022-07-13 18:53:15,091 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 927 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 927 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:15,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [927 Valid, 424 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:53:15,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-07-13 18:53:15,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 202. [2022-07-13 18:53:15,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 198 states have (on average 1.3080808080808082) internal successors, (259), 201 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:15,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 259 transitions. [2022-07-13 18:53:15,114 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 259 transitions. Word has length 53 [2022-07-13 18:53:15,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:15,114 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 259 transitions. [2022-07-13 18:53:15,114 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) [2022-07-13 18:53:15,115 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 259 transitions. [2022-07-13 18:53:15,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-13 18:53:15,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:15,115 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] [2022-07-13 18:53:15,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 18:53:15,116 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)] === [2022-07-13 18:53:15,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash 339917441, now seen corresponding path program 1 times [2022-07-13 18:53:15,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:15,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86825292] [2022-07-13 18:53:15,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:15,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:15,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:15,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:15,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86825292] [2022-07-13 18:53:15,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86825292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:15,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:15,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:53:15,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219275781] [2022-07-13 18:53:15,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:15,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:53:15,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:15,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:53:15,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:53:15,178 INFO L87 Difference]: Start difference. First operand 202 states and 259 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) [2022-07-13 18:53:15,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:15,381 INFO L93 Difference]: Finished difference Result 319 states and 423 transitions. [2022-07-13 18:53:15,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:53:15,382 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 [2022-07-13 18:53:15,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:15,383 INFO L225 Difference]: With dead ends: 319 [2022-07-13 18:53:15,383 INFO L226 Difference]: Without dead ends: 205 [2022-07-13 18:53:15,383 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:53:15,384 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 337 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 268 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 358 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:15,384 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [337 Valid, 358 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 268 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:53:15,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2022-07-13 18:53:15,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 202. [2022-07-13 18:53:15,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 198 states have (on average 1.297979797979798) internal successors, (257), 201 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:15,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 257 transitions. [2022-07-13 18:53:15,405 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 257 transitions. Word has length 53 [2022-07-13 18:53:15,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:15,406 INFO L495 AbstractCegarLoop]: Abstraction has 202 states and 257 transitions. [2022-07-13 18:53:15,406 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) [2022-07-13 18:53:15,406 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 257 transitions. [2022-07-13 18:53:15,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-07-13 18:53:15,406 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:15,407 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] [2022-07-13 18:53:15,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 18:53:15,407 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)] === [2022-07-13 18:53:15,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:15,407 INFO L85 PathProgramCache]: Analyzing trace with hash -746268687, now seen corresponding path program 1 times [2022-07-13 18:53:15,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:15,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639213491] [2022-07-13 18:53:15,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:15,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:15,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:15,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:15,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:15,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639213491] [2022-07-13 18:53:15,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639213491] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:15,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:15,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:53:15,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715524581] [2022-07-13 18:53:15,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:15,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:53:15,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:15,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:53:15,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:53:15,468 INFO L87 Difference]: Start difference. First operand 202 states and 257 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) [2022-07-13 18:53:15,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:15,764 INFO L93 Difference]: Finished difference Result 339 states and 440 transitions. [2022-07-13 18:53:15,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 18:53:15,764 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 [2022-07-13 18:53:15,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:15,765 INFO L225 Difference]: With dead ends: 339 [2022-07-13 18:53:15,765 INFO L226 Difference]: Without dead ends: 332 [2022-07-13 18:53:15,766 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 [2022-07-13 18:53:15,766 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 351 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 625 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:15,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 625 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:53:15,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2022-07-13 18:53:15,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 198. [2022-07-13 18:53:15,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 194 states have (on average 1.2989690721649485) internal successors, (252), 197 states have internal predecessors, (252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:15,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 252 transitions. [2022-07-13 18:53:15,802 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 252 transitions. Word has length 54 [2022-07-13 18:53:15,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:15,802 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 252 transitions. [2022-07-13 18:53:15,802 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) [2022-07-13 18:53:15,802 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 252 transitions. [2022-07-13 18:53:15,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 18:53:15,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:15,803 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] [2022-07-13 18:53:15,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 18:53:15,803 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)] === [2022-07-13 18:53:15,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:15,804 INFO L85 PathProgramCache]: Analyzing trace with hash -11876974, now seen corresponding path program 1 times [2022-07-13 18:53:15,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:15,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030354375] [2022-07-13 18:53:15,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:15,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:16,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:16,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:16,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030354375] [2022-07-13 18:53:16,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030354375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:16,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:16,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-13 18:53:16,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687132426] [2022-07-13 18:53:16,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:16,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 18:53:16,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:16,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 18:53:16,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:53:16,071 INFO L87 Difference]: Start difference. First operand 198 states and 252 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) [2022-07-13 18:53:16,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:16,715 INFO L93 Difference]: Finished difference Result 228 states and 280 transitions. [2022-07-13 18:53:16,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 18:53:16,715 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 [2022-07-13 18:53:16,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:16,716 INFO L225 Difference]: With dead ends: 228 [2022-07-13 18:53:16,716 INFO L226 Difference]: Without dead ends: 220 [2022-07-13 18:53:16,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=209, Invalid=721, Unknown=0, NotChecked=0, Total=930 [2022-07-13 18:53:16,717 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 261 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 261 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:16,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [261 Valid, 1672 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:53:16,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-07-13 18:53:16,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 203. [2022-07-13 18:53:16,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 199 states have (on average 1.2914572864321607) internal successors, (257), 202 states have internal predecessors, (257), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:16,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 257 transitions. [2022-07-13 18:53:16,740 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 257 transitions. Word has length 55 [2022-07-13 18:53:16,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:16,740 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 257 transitions. [2022-07-13 18:53:16,740 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) [2022-07-13 18:53:16,740 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 257 transitions. [2022-07-13 18:53:16,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 18:53:16,741 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:16,741 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] [2022-07-13 18:53:16,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 18:53:16,741 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)] === [2022-07-13 18:53:16,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:16,742 INFO L85 PathProgramCache]: Analyzing trace with hash -637393645, now seen corresponding path program 1 times [2022-07-13 18:53:16,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:16,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573994104] [2022-07-13 18:53:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:16,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:16,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:17,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:17,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:17,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573994104] [2022-07-13 18:53:17,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573994104] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:17,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:17,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-13 18:53:17,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477133156] [2022-07-13 18:53:17,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:17,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-13 18:53:17,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:17,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-13 18:53:17,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-07-13 18:53:17,052 INFO L87 Difference]: Start difference. First operand 203 states and 257 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) [2022-07-13 18:53:17,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:17,705 INFO L93 Difference]: Finished difference Result 243 states and 294 transitions. [2022-07-13 18:53:17,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-13 18:53:17,705 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 [2022-07-13 18:53:17,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:17,706 INFO L225 Difference]: With dead ends: 243 [2022-07-13 18:53:17,706 INFO L226 Difference]: Without dead ends: 235 [2022-07-13 18:53:17,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=237, Invalid=953, Unknown=0, NotChecked=0, Total=1190 [2022-07-13 18:53:17,707 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 521 mSDsluCounter, 1148 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 1298 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:17,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 1298 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 18:53:17,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-07-13 18:53:17,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 206. [2022-07-13 18:53:17,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 202 states have (on average 1.2871287128712872) internal successors, (260), 205 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:17,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 260 transitions. [2022-07-13 18:53:17,756 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 260 transitions. Word has length 55 [2022-07-13 18:53:17,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:17,756 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 260 transitions. [2022-07-13 18:53:17,756 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) [2022-07-13 18:53:17,756 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 260 transitions. [2022-07-13 18:53:17,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-13 18:53:17,757 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:17,757 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] [2022-07-13 18:53:17,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 18:53:17,757 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)] === [2022-07-13 18:53:17,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:17,758 INFO L85 PathProgramCache]: Analyzing trace with hash -824240014, now seen corresponding path program 1 times [2022-07-13 18:53:17,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:17,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458217160] [2022-07-13 18:53:17,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:17,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:17,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:17,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:17,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458217160] [2022-07-13 18:53:17,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458217160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:17,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:17,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-13 18:53:17,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889753838] [2022-07-13 18:53:17,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:17,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-13 18:53:17,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:17,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-13 18:53:17,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 18:53:17,907 INFO L87 Difference]: Start difference. First operand 206 states and 260 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) [2022-07-13 18:53:18,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:18,356 INFO L93 Difference]: Finished difference Result 521 states and 706 transitions. [2022-07-13 18:53:18,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 18:53:18,361 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 [2022-07-13 18:53:18,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:18,363 INFO L225 Difference]: With dead ends: 521 [2022-07-13 18:53:18,363 INFO L226 Difference]: Without dead ends: 515 [2022-07-13 18:53:18,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-07-13 18:53:18,366 INFO L413 NwaCegarLoop]: 318 mSDtfsCounter, 873 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:18,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1630 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:53:18,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2022-07-13 18:53:18,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 200. [2022-07-13 18:53:18,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 197 states have (on average 1.284263959390863) internal successors, (253), 199 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:18,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 253 transitions. [2022-07-13 18:53:18,396 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 253 transitions. Word has length 55 [2022-07-13 18:53:18,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:18,396 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 253 transitions. [2022-07-13 18:53:18,396 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) [2022-07-13 18:53:18,396 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 253 transitions. [2022-07-13 18:53:18,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-13 18:53:18,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:18,397 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] [2022-07-13 18:53:18,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 18:53:18,397 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)] === [2022-07-13 18:53:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:18,397 INFO L85 PathProgramCache]: Analyzing trace with hash -808849069, now seen corresponding path program 1 times [2022-07-13 18:53:18,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:18,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282216781] [2022-07-13 18:53:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:18,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:18,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:18,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:18,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282216781] [2022-07-13 18:53:18,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282216781] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:18,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:18,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 18:53:18,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617172122] [2022-07-13 18:53:18,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:18,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 18:53:18,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:18,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 18:53:18,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:53:18,608 INFO L87 Difference]: Start difference. First operand 200 states and 253 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) [2022-07-13 18:53:18,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:18,934 INFO L93 Difference]: Finished difference Result 310 states and 409 transitions. [2022-07-13 18:53:18,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 18:53:18,934 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 [2022-07-13 18:53:18,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:18,935 INFO L225 Difference]: With dead ends: 310 [2022-07-13 18:53:18,935 INFO L226 Difference]: Without dead ends: 295 [2022-07-13 18:53:18,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-07-13 18:53:18,936 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 270 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1218 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:18,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1218 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:53:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-13 18:53:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 185. [2022-07-13 18:53:18,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 183 states have (on average 1.289617486338798) internal successors, (236), 184 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:18,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 236 transitions. [2022-07-13 18:53:18,961 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 236 transitions. Word has length 56 [2022-07-13 18:53:18,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:18,962 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 236 transitions. [2022-07-13 18:53:18,962 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) [2022-07-13 18:53:18,962 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 236 transitions. [2022-07-13 18:53:18,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-13 18:53:18,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:18,963 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] [2022-07-13 18:53:18,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 18:53:18,963 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)] === [2022-07-13 18:53:18,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:18,963 INFO L85 PathProgramCache]: Analyzing trace with hash 623432965, now seen corresponding path program 1 times [2022-07-13 18:53:18,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:18,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658113883] [2022-07-13 18:53:18,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:18,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:19,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:19,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:19,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658113883] [2022-07-13 18:53:19,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658113883] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:19,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:19,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-13 18:53:19,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498629811] [2022-07-13 18:53:19,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:19,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 18:53:19,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:19,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 18:53:19,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-13 18:53:19,322 INFO L87 Difference]: Start difference. First operand 185 states and 236 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) [2022-07-13 18:53:20,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:20,259 INFO L93 Difference]: Finished difference Result 202 states and 251 transitions. [2022-07-13 18:53:20,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 18:53:20,259 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 [2022-07-13 18:53:20,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:20,260 INFO L225 Difference]: With dead ends: 202 [2022-07-13 18:53:20,260 INFO L226 Difference]: Without dead ends: 188 [2022-07-13 18:53:20,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=206, Invalid=606, Unknown=0, NotChecked=0, Total=812 [2022-07-13 18:53:20,261 INFO L413 NwaCegarLoop]: 119 mSDtfsCounter, 420 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:20,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [420 Valid, 867 Invalid, 424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-13 18:53:20,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2022-07-13 18:53:20,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 180. [2022-07-13 18:53:20,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 178 states have (on average 1.2921348314606742) internal successors, (230), 179 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:20,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 230 transitions. [2022-07-13 18:53:20,305 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 230 transitions. Word has length 56 [2022-07-13 18:53:20,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:20,305 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 230 transitions. [2022-07-13 18:53:20,305 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) [2022-07-13 18:53:20,306 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 230 transitions. [2022-07-13 18:53:20,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-13 18:53:20,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:20,306 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] [2022-07-13 18:53:20,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 18:53:20,306 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)] === [2022-07-13 18:53:20,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:20,307 INFO L85 PathProgramCache]: Analyzing trace with hash 1511387265, now seen corresponding path program 1 times [2022-07-13 18:53:20,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:20,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916080323] [2022-07-13 18:53:20,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:20,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:20,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:20,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:20,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916080323] [2022-07-13 18:53:20,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916080323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:20,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:20,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 18:53:20,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871340114] [2022-07-13 18:53:20,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:20,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 18:53:20,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:20,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 18:53:20,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-13 18:53:20,467 INFO L87 Difference]: Start difference. First operand 180 states and 230 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) [2022-07-13 18:53:21,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:21,007 INFO L93 Difference]: Finished difference Result 446 states and 622 transitions. [2022-07-13 18:53:21,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 18:53:21,008 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 [2022-07-13 18:53:21,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:21,009 INFO L225 Difference]: With dead ends: 446 [2022-07-13 18:53:21,009 INFO L226 Difference]: Without dead ends: 428 [2022-07-13 18:53:21,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2022-07-13 18:53:21,010 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 853 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 839 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:21,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 839 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:53:21,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-07-13 18:53:21,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 162. [2022-07-13 18:53:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 1.31055900621118) internal successors, (211), 161 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:21,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 211 transitions. [2022-07-13 18:53:21,038 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 211 transitions. Word has length 56 [2022-07-13 18:53:21,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:21,038 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 211 transitions. [2022-07-13 18:53:21,039 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) [2022-07-13 18:53:21,039 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 211 transitions. [2022-07-13 18:53:21,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 18:53:21,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:21,039 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] [2022-07-13 18:53:21,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 18:53:21,040 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)] === [2022-07-13 18:53:21,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:21,040 INFO L85 PathProgramCache]: Analyzing trace with hash 2042294308, now seen corresponding path program 1 times [2022-07-13 18:53:21,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:21,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756522787] [2022-07-13 18:53:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:21,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:21,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:21,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:21,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756522787] [2022-07-13 18:53:21,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756522787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:21,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:21,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:53:21,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839429291] [2022-07-13 18:53:21,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:21,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:53:21,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:21,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:53:21,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:53:21,079 INFO L87 Difference]: Start difference. First operand 162 states and 211 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) [2022-07-13 18:53:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:21,259 INFO L93 Difference]: Finished difference Result 666 states and 967 transitions. [2022-07-13 18:53:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 18:53:21,260 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 [2022-07-13 18:53:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:21,266 INFO L225 Difference]: With dead ends: 666 [2022-07-13 18:53:21,270 INFO L226 Difference]: Without dead ends: 582 [2022-07-13 18:53:21,270 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 [2022-07-13 18:53:21,272 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 486 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 486 SdHoareTripleChecker+Valid, 608 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 [2022-07-13 18:53:21,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [486 Valid, 608 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:53:21,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-07-13 18:53:21,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 244. [2022-07-13 18:53:21,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 243 states have (on average 1.3662551440329218) internal successors, (332), 243 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:21,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 332 transitions. [2022-07-13 18:53:21,337 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 332 transitions. Word has length 73 [2022-07-13 18:53:21,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:21,337 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 332 transitions. [2022-07-13 18:53:21,337 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) [2022-07-13 18:53:21,338 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 332 transitions. [2022-07-13 18:53:21,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 18:53:21,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:21,338 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] [2022-07-13 18:53:21,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 18:53:21,339 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)] === [2022-07-13 18:53:21,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:21,339 INFO L85 PathProgramCache]: Analyzing trace with hash -786943772, now seen corresponding path program 1 times [2022-07-13 18:53:21,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:21,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368173969] [2022-07-13 18:53:21,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:21,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:21,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:21,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:21,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:21,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368173969] [2022-07-13 18:53:21,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368173969] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:21,374 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:21,374 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:53:21,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749754573] [2022-07-13 18:53:21,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:21,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:53:21,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:21,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:53:21,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:53:21,376 INFO L87 Difference]: Start difference. First operand 244 states and 332 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) [2022-07-13 18:53:21,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:21,565 INFO L93 Difference]: Finished difference Result 826 states and 1195 transitions. [2022-07-13 18:53:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:53:21,566 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 [2022-07-13 18:53:21,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:21,568 INFO L225 Difference]: With dead ends: 826 [2022-07-13 18:53:21,568 INFO L226 Difference]: Without dead ends: 660 [2022-07-13 18:53:21,568 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 [2022-07-13 18:53:21,569 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 285 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 424 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 [2022-07-13 18:53:21,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 424 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:53:21,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 660 states. [2022-07-13 18:53:21,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 660 to 408. [2022-07-13 18:53:21,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 407 states have (on average 1.4152334152334152) internal successors, (576), 407 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:21,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 576 transitions. [2022-07-13 18:53:21,678 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 576 transitions. Word has length 75 [2022-07-13 18:53:21,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:21,679 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 576 transitions. [2022-07-13 18:53:21,679 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) [2022-07-13 18:53:21,679 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 576 transitions. [2022-07-13 18:53:21,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 18:53:21,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:21,682 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 18:53:21,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 18:53:21,683 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)] === [2022-07-13 18:53:21,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:21,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1322322984, now seen corresponding path program 1 times [2022-07-13 18:53:21,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:21,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114427758] [2022-07-13 18:53:21,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:21,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:21,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:21,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:21,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:21,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114427758] [2022-07-13 18:53:21,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114427758] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:21,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:21,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:53:21,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501359110] [2022-07-13 18:53:21,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:21,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:53:21,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:21,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:53:21,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:53:21,738 INFO L87 Difference]: Start difference. First operand 408 states and 576 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) [2022-07-13 18:53:21,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:21,977 INFO L93 Difference]: Finished difference Result 990 states and 1439 transitions. [2022-07-13 18:53:21,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:53:21,977 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 [2022-07-13 18:53:21,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:21,980 INFO L225 Difference]: With dead ends: 990 [2022-07-13 18:53:21,980 INFO L226 Difference]: Without dead ends: 824 [2022-07-13 18:53:21,980 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 [2022-07-13 18:53:21,981 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 294 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:21,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 440 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:53:21,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 824 states. [2022-07-13 18:53:22,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 824 to 654. [2022-07-13 18:53:22,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 1.44104134762634) internal successors, (941), 653 states have internal predecessors, (941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:22,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 941 transitions. [2022-07-13 18:53:22,163 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 941 transitions. Word has length 75 [2022-07-13 18:53:22,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:22,163 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 941 transitions. [2022-07-13 18:53:22,163 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) [2022-07-13 18:53:22,164 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 941 transitions. [2022-07-13 18:53:22,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 18:53:22,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:22,164 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] [2022-07-13 18:53:22,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 18:53:22,165 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)] === [2022-07-13 18:53:22,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:22,165 INFO L85 PathProgramCache]: Analyzing trace with hash -1446907099, now seen corresponding path program 1 times [2022-07-13 18:53:22,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:22,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780480416] [2022-07-13 18:53:22,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:22,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:22,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:22,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:22,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:22,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780480416] [2022-07-13 18:53:22,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780480416] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:22,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:22,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:53:22,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578800316] [2022-07-13 18:53:22,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:22,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:53:22,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:22,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:53:22,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:53:22,204 INFO L87 Difference]: Start difference. First operand 654 states and 941 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) [2022-07-13 18:53:22,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:22,449 INFO L93 Difference]: Finished difference Result 1232 states and 1798 transitions. [2022-07-13 18:53:22,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:53:22,449 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 [2022-07-13 18:53:22,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:22,451 INFO L225 Difference]: With dead ends: 1232 [2022-07-13 18:53:22,451 INFO L226 Difference]: Without dead ends: 656 [2022-07-13 18:53:22,452 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 [2022-07-13 18:53:22,453 INFO L413 NwaCegarLoop]: 122 mSDtfsCounter, 51 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:22,453 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 202 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:53:22,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-07-13 18:53:22,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 654. [2022-07-13 18:53:22,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 654 states, 653 states have (on average 1.4287901990811638) internal successors, (933), 653 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:22,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 654 states to 654 states and 933 transitions. [2022-07-13 18:53:22,616 INFO L78 Accepts]: Start accepts. Automaton has 654 states and 933 transitions. Word has length 75 [2022-07-13 18:53:22,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:22,616 INFO L495 AbstractCegarLoop]: Abstraction has 654 states and 933 transitions. [2022-07-13 18:53:22,616 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) [2022-07-13 18:53:22,616 INFO L276 IsEmpty]: Start isEmpty. Operand 654 states and 933 transitions. [2022-07-13 18:53:22,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 18:53:22,617 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:22,617 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] [2022-07-13 18:53:22,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 18:53:22,617 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)] === [2022-07-13 18:53:22,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:22,618 INFO L85 PathProgramCache]: Analyzing trace with hash 2078767204, now seen corresponding path program 1 times [2022-07-13 18:53:22,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:22,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394828396] [2022-07-13 18:53:22,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:22,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:22,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:22,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:22,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:22,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394828396] [2022-07-13 18:53:22,640 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394828396] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:22,640 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:22,640 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:53:22,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056880406] [2022-07-13 18:53:22,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:22,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:53:22,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:22,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:53:22,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:53:22,641 INFO L87 Difference]: Start difference. First operand 654 states and 933 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) [2022-07-13 18:53:22,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:22,975 INFO L93 Difference]: Finished difference Result 1716 states and 2479 transitions. [2022-07-13 18:53:22,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:53:22,976 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 [2022-07-13 18:53:22,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:22,978 INFO L225 Difference]: With dead ends: 1716 [2022-07-13 18:53:22,978 INFO L226 Difference]: Without dead ends: 1140 [2022-07-13 18:53:22,980 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 [2022-07-13 18:53:22,980 INFO L413 NwaCegarLoop]: 174 mSDtfsCounter, 51 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 286 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 [2022-07-13 18:53:22,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 286 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:53:22,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1140 states. [2022-07-13 18:53:23,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1140 to 1138. [2022-07-13 18:53:23,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1138 states, 1137 states have (on average 1.4089709762532983) internal successors, (1602), 1137 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:23,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1602 transitions. [2022-07-13 18:53:23,310 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1602 transitions. Word has length 75 [2022-07-13 18:53:23,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:23,310 INFO L495 AbstractCegarLoop]: Abstraction has 1138 states and 1602 transitions. [2022-07-13 18:53:23,310 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) [2022-07-13 18:53:23,310 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1602 transitions. [2022-07-13 18:53:23,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 18:53:23,311 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:23,311 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] [2022-07-13 18:53:23,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 18:53:23,311 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)] === [2022-07-13 18:53:23,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:23,312 INFO L85 PathProgramCache]: Analyzing trace with hash 95104542, now seen corresponding path program 1 times [2022-07-13 18:53:23,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:23,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486983779] [2022-07-13 18:53:23,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:23,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:23,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:23,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:23,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:23,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486983779] [2022-07-13 18:53:23,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486983779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:23,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:23,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 18:53:23,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836122841] [2022-07-13 18:53:23,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:23,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 18:53:23,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:23,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 18:53:23,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 18:53:23,374 INFO L87 Difference]: Start difference. First operand 1138 states and 1602 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) [2022-07-13 18:53:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:24,035 INFO L93 Difference]: Finished difference Result 2052 states and 2914 transitions. [2022-07-13 18:53:24,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 18:53:24,036 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 [2022-07-13 18:53:24,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:24,042 INFO L225 Difference]: With dead ends: 2052 [2022-07-13 18:53:24,042 INFO L226 Difference]: Without dead ends: 1748 [2022-07-13 18:53:24,043 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 [2022-07-13 18:53:24,044 INFO L413 NwaCegarLoop]: 178 mSDtfsCounter, 289 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 459 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:53:24,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 459 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:53:24,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2022-07-13 18:53:24,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1440. [2022-07-13 18:53:24,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1440 states, 1439 states have (on average 1.4134815844336344) internal successors, (2034), 1439 states have internal predecessors, (2034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:24,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1440 states to 1440 states and 2034 transitions. [2022-07-13 18:53:24,472 INFO L78 Accepts]: Start accepts. Automaton has 1440 states and 2034 transitions. Word has length 75 [2022-07-13 18:53:24,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:24,473 INFO L495 AbstractCegarLoop]: Abstraction has 1440 states and 2034 transitions. [2022-07-13 18:53:24,473 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) [2022-07-13 18:53:24,473 INFO L276 IsEmpty]: Start isEmpty. Operand 1440 states and 2034 transitions. [2022-07-13 18:53:24,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-13 18:53:24,474 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:24,474 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] [2022-07-13 18:53:24,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 18:53:24,474 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)] === [2022-07-13 18:53:24,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1963614716, now seen corresponding path program 1 times [2022-07-13 18:53:24,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:24,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156143275] [2022-07-13 18:53:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:24,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:24,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:24,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:24,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156143275] [2022-07-13 18:53:24,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156143275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:24,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:24,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:53:24,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946012099] [2022-07-13 18:53:24,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:24,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:53:24,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:24,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:53:24,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:53:24,501 INFO L87 Difference]: Start difference. First operand 1440 states and 2034 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) [2022-07-13 18:53:25,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:25,218 INFO L93 Difference]: Finished difference Result 3678 states and 5210 transitions. [2022-07-13 18:53:25,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:53:25,218 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 [2022-07-13 18:53:25,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:25,224 INFO L225 Difference]: With dead ends: 3678 [2022-07-13 18:53:25,224 INFO L226 Difference]: Without dead ends: 2316 [2022-07-13 18:53:25,226 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 [2022-07-13 18:53:25,226 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 60 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 268 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 [2022-07-13 18:53:25,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 268 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:53:25,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2316 states. [2022-07-13 18:53:25,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2316 to 2170. [2022-07-13 18:53:25,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2170 states, 2169 states have (on average 1.3951129552789303) internal successors, (3026), 2169 states have internal predecessors, (3026), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:25,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2170 states to 2170 states and 3026 transitions. [2022-07-13 18:53:25,855 INFO L78 Accepts]: Start accepts. Automaton has 2170 states and 3026 transitions. Word has length 76 [2022-07-13 18:53:25,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:25,855 INFO L495 AbstractCegarLoop]: Abstraction has 2170 states and 3026 transitions. [2022-07-13 18:53:25,855 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) [2022-07-13 18:53:25,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2170 states and 3026 transitions. [2022-07-13 18:53:25,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-13 18:53:25,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:25,856 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] [2022-07-13 18:53:25,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 18:53:25,857 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)] === [2022-07-13 18:53:25,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:25,857 INFO L85 PathProgramCache]: Analyzing trace with hash -628172474, now seen corresponding path program 1 times [2022-07-13 18:53:25,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:25,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046541542] [2022-07-13 18:53:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:25,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:25,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:25,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:25,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046541542] [2022-07-13 18:53:25,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046541542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:25,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:25,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:53:25,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90545220] [2022-07-13 18:53:25,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:25,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:53:25,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:25,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:53:25,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:53:25,883 INFO L87 Difference]: Start difference. First operand 2170 states and 3026 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) [2022-07-13 18:53:27,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:27,130 INFO L93 Difference]: Finished difference Result 6138 states and 8530 transitions. [2022-07-13 18:53:27,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:53:27,131 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 [2022-07-13 18:53:27,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:27,141 INFO L225 Difference]: With dead ends: 6138 [2022-07-13 18:53:27,141 INFO L226 Difference]: Without dead ends: 4046 [2022-07-13 18:53:27,143 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 [2022-07-13 18:53:27,144 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 53 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 267 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 [2022-07-13 18:53:27,144 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 267 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:53:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4046 states. [2022-07-13 18:53:28,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4046 to 3828. [2022-07-13 18:53:28,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3828 states, 3827 states have (on average 1.3754899399007054) internal successors, (5264), 3827 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:28,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3828 states to 3828 states and 5264 transitions. [2022-07-13 18:53:28,276 INFO L78 Accepts]: Start accepts. Automaton has 3828 states and 5264 transitions. Word has length 77 [2022-07-13 18:53:28,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:28,277 INFO L495 AbstractCegarLoop]: Abstraction has 3828 states and 5264 transitions. [2022-07-13 18:53:28,277 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) [2022-07-13 18:53:28,277 INFO L276 IsEmpty]: Start isEmpty. Operand 3828 states and 5264 transitions. [2022-07-13 18:53:28,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-13 18:53:28,278 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:28,278 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] [2022-07-13 18:53:28,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 18:53:28,278 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)] === [2022-07-13 18:53:28,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:28,278 INFO L85 PathProgramCache]: Analyzing trace with hash -763788569, now seen corresponding path program 1 times [2022-07-13 18:53:28,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:28,279 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81135594] [2022-07-13 18:53:28,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:28,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:28,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:28,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:28,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81135594] [2022-07-13 18:53:28,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81135594] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:28,305 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:28,305 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:53:28,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129011695] [2022-07-13 18:53:28,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:28,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:53:28,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:28,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:53:28,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:53:28,306 INFO L87 Difference]: Start difference. First operand 3828 states and 5264 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) [2022-07-13 18:53:30,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:30,596 INFO L93 Difference]: Finished difference Result 10896 states and 14866 transitions. [2022-07-13 18:53:30,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:53:30,596 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 [2022-07-13 18:53:30,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:30,614 INFO L225 Difference]: With dead ends: 10896 [2022-07-13 18:53:30,614 INFO L226 Difference]: Without dead ends: 7146 [2022-07-13 18:53:30,617 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 [2022-07-13 18:53:30,618 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 43 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 265 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 [2022-07-13 18:53:30,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 265 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:53:30,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7146 states. [2022-07-13 18:53:32,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7146 to 6712. [2022-07-13 18:53:32,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6712 states, 6711 states have (on average 1.346744151393235) internal successors, (9038), 6711 states have internal predecessors, (9038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:32,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6712 states to 6712 states and 9038 transitions. [2022-07-13 18:53:32,702 INFO L78 Accepts]: Start accepts. Automaton has 6712 states and 9038 transitions. Word has length 78 [2022-07-13 18:53:32,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:32,702 INFO L495 AbstractCegarLoop]: Abstraction has 6712 states and 9038 transitions. [2022-07-13 18:53:32,703 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) [2022-07-13 18:53:32,703 INFO L276 IsEmpty]: Start isEmpty. Operand 6712 states and 9038 transitions. [2022-07-13 18:53:32,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 18:53:32,703 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:32,703 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] [2022-07-13 18:53:32,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 18:53:32,704 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)] === [2022-07-13 18:53:32,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:32,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1461539563, now seen corresponding path program 1 times [2022-07-13 18:53:32,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:32,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681005910] [2022-07-13 18:53:32,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:32,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:32,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:32,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:32,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:32,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681005910] [2022-07-13 18:53:32,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681005910] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:32,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:32,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 18:53:32,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274545148] [2022-07-13 18:53:32,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:32,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 18:53:32,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:32,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 18:53:32,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 18:53:32,742 INFO L87 Difference]: Start difference. First operand 6712 states and 9038 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) [2022-07-13 18:53:36,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:36,119 INFO L93 Difference]: Finished difference Result 10398 states and 13924 transitions. [2022-07-13 18:53:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 18:53:36,129 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 [2022-07-13 18:53:36,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:36,160 INFO L225 Difference]: With dead ends: 10398 [2022-07-13 18:53:36,161 INFO L226 Difference]: Without dead ends: 10396 [2022-07-13 18:53:36,163 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 [2022-07-13 18:53:36,163 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 202 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 202 SdHoareTripleChecker+Valid, 636 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 [2022-07-13 18:53:36,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [202 Valid, 636 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:53:36,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10396 states. [2022-07-13 18:53:38,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10396 to 6904. [2022-07-13 18:53:38,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6904 states, 6903 states have (on average 1.325510647544546) internal successors, (9150), 6903 states have internal predecessors, (9150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:38,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6904 states to 6904 states and 9150 transitions. [2022-07-13 18:53:38,414 INFO L78 Accepts]: Start accepts. Automaton has 6904 states and 9150 transitions. Word has length 79 [2022-07-13 18:53:38,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:38,414 INFO L495 AbstractCegarLoop]: Abstraction has 6904 states and 9150 transitions. [2022-07-13 18:53:38,414 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) [2022-07-13 18:53:38,414 INFO L276 IsEmpty]: Start isEmpty. Operand 6904 states and 9150 transitions. [2022-07-13 18:53:38,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 18:53:38,415 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:38,415 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] [2022-07-13 18:53:38,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 18:53:38,416 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)] === [2022-07-13 18:53:38,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:38,416 INFO L85 PathProgramCache]: Analyzing trace with hash 965347417, now seen corresponding path program 1 times [2022-07-13 18:53:38,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:38,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065717477] [2022-07-13 18:53:38,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:38,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:38,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:38,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:38,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:38,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065717477] [2022-07-13 18:53:38,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065717477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:53:38,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:53:38,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:53:38,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075074348] [2022-07-13 18:53:38,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:53:38,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:53:38,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:38,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:53:38,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:53:38,442 INFO L87 Difference]: Start difference. First operand 6904 states and 9150 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) [2022-07-13 18:53:41,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:53:41,042 INFO L93 Difference]: Finished difference Result 13996 states and 18572 transitions. [2022-07-13 18:53:41,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:53:41,043 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 [2022-07-13 18:53:41,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:53:41,056 INFO L225 Difference]: With dead ends: 13996 [2022-07-13 18:53:41,057 INFO L226 Difference]: Without dead ends: 7170 [2022-07-13 18:53:41,064 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 [2022-07-13 18:53:41,065 INFO L413 NwaCegarLoop]: 139 mSDtfsCounter, 67 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 218 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 [2022-07-13 18:53:41,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 218 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:53:41,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7170 states. [2022-07-13 18:53:43,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7170 to 7168. [2022-07-13 18:53:43,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7168 states, 7167 states have (on average 1.30514859773964) internal successors, (9354), 7167 states have internal predecessors, (9354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:53:43,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7168 states to 7168 states and 9354 transitions. [2022-07-13 18:53:43,392 INFO L78 Accepts]: Start accepts. Automaton has 7168 states and 9354 transitions. Word has length 79 [2022-07-13 18:53:43,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:53:43,392 INFO L495 AbstractCegarLoop]: Abstraction has 7168 states and 9354 transitions. [2022-07-13 18:53:43,392 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) [2022-07-13 18:53:43,393 INFO L276 IsEmpty]: Start isEmpty. Operand 7168 states and 9354 transitions. [2022-07-13 18:53:43,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 18:53:43,396 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:53:43,396 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] [2022-07-13 18:53:43,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 18:53:43,397 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)] === [2022-07-13 18:53:43,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:53:43,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1381911094, now seen corresponding path program 1 times [2022-07-13 18:53:43,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:53:43,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339009810] [2022-07-13 18:53:43,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:43,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:53:43,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:43,533 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:43,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:53:43,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339009810] [2022-07-13 18:53:43,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339009810] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:53:43,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1644147635] [2022-07-13 18:53:43,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:53:43,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:53:43,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:53:43,540 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) [2022-07-13 18:53:43,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 18:53:43,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:53:43,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-13 18:53:43,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:53:44,259 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:44,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:53:45,228 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:53:45,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1644147635] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:53:45,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:53:45,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 26 [2022-07-13 18:53:45,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125387713] [2022-07-13 18:53:45,229 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:53:45,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-13 18:53:45,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:53:45,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-13 18:53:45,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=602, Unknown=0, NotChecked=0, Total=702 [2022-07-13 18:53:45,231 INFO L87 Difference]: Start difference. First operand 7168 states and 9354 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) [2022-07-13 18:54:12,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:54:12,179 INFO L93 Difference]: Finished difference Result 64510 states and 82596 transitions. [2022-07-13 18:54:12,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 101 states. [2022-07-13 18:54:12,180 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 [2022-07-13 18:54:12,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:54:12,294 INFO L225 Difference]: With dead ends: 64510 [2022-07-13 18:54:12,294 INFO L226 Difference]: Without dead ends: 57420 [2022-07-13 18:54:12,317 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5290 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=3066, Invalid=12684, Unknown=0, NotChecked=0, Total=15750 [2022-07-13 18:54:12,317 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 4527 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 1587 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4527 SdHoareTripleChecker+Valid, 1721 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 1587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-13 18:54:12,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4527 Valid, 1721 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 1587 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-13 18:54:12,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57420 states. [2022-07-13 18:54:18,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57420 to 15318. [2022-07-13 18:54:18,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15318 states, 15317 states have (on average 1.2968596983743552) internal successors, (19864), 15317 states have internal predecessors, (19864), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:54:18,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15318 states to 15318 states and 19864 transitions. [2022-07-13 18:54:18,651 INFO L78 Accepts]: Start accepts. Automaton has 15318 states and 19864 transitions. Word has length 101 [2022-07-13 18:54:18,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:54:18,651 INFO L495 AbstractCegarLoop]: Abstraction has 15318 states and 19864 transitions. [2022-07-13 18:54:18,651 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) [2022-07-13 18:54:18,652 INFO L276 IsEmpty]: Start isEmpty. Operand 15318 states and 19864 transitions. [2022-07-13 18:54:18,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 18:54:18,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:54:18,655 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] [2022-07-13 18:54:18,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 18:54:18,873 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 [2022-07-13 18:54:18,873 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)] === [2022-07-13 18:54:18,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:54:18,873 INFO L85 PathProgramCache]: Analyzing trace with hash 1466079819, now seen corresponding path program 1 times [2022-07-13 18:54:18,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:54:18,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81058557] [2022-07-13 18:54:18,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:54:18,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:54:18,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:54:18,913 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-13 18:54:18,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:54:18,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81058557] [2022-07-13 18:54:18,913 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81058557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:54:18,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:54:18,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 18:54:18,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062118852] [2022-07-13 18:54:18,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:54:18,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 18:54:18,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:54:18,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 18:54:18,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 18:54:18,915 INFO L87 Difference]: Start difference. First operand 15318 states and 19864 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) [2022-07-13 18:54:24,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:54:24,571 INFO L93 Difference]: Finished difference Result 29272 states and 38141 transitions. [2022-07-13 18:54:24,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 18:54:24,572 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 [2022-07-13 18:54:24,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:54:24,599 INFO L225 Difference]: With dead ends: 29272 [2022-07-13 18:54:24,599 INFO L226 Difference]: Without dead ends: 14046 [2022-07-13 18:54:24,612 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 [2022-07-13 18:54:24,613 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 83 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 18:54:24,613 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 103 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 18:54:24,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14046 states. [2022-07-13 18:54:30,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14046 to 14046. [2022-07-13 18:54:30,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14046 states, 14045 states have (on average 1.2924172303310786) internal successors, (18152), 14045 states have internal predecessors, (18152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:54:30,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14046 states to 14046 states and 18152 transitions. [2022-07-13 18:54:30,243 INFO L78 Accepts]: Start accepts. Automaton has 14046 states and 18152 transitions. Word has length 102 [2022-07-13 18:54:30,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:54:30,244 INFO L495 AbstractCegarLoop]: Abstraction has 14046 states and 18152 transitions. [2022-07-13 18:54:30,244 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) [2022-07-13 18:54:30,244 INFO L276 IsEmpty]: Start isEmpty. Operand 14046 states and 18152 transitions. [2022-07-13 18:54:30,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 18:54:30,256 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:54:30,256 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] [2022-07-13 18:54:30,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-13 18:54:30,271 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)] === [2022-07-13 18:54:30,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:54:30,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1423038550, now seen corresponding path program 1 times [2022-07-13 18:54:30,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:54:30,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538535690] [2022-07-13 18:54:30,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:54:30,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:54:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:54:30,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 18:54:30,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:54:30,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538535690] [2022-07-13 18:54:30,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538535690] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:54:30,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 18:54:30,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 18:54:30,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831056399] [2022-07-13 18:54:30,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:54:30,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 18:54:30,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:54:30,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 18:54:30,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-13 18:54:30,373 INFO L87 Difference]: Start difference. First operand 14046 states and 18152 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) [2022-07-13 18:54:43,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:54:43,342 INFO L93 Difference]: Finished difference Result 42454 states and 54762 transitions. [2022-07-13 18:54:43,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 18:54:43,343 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 [2022-07-13 18:54:43,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:54:43,377 INFO L225 Difference]: With dead ends: 42454 [2022-07-13 18:54:43,377 INFO L226 Difference]: Without dead ends: 28488 [2022-07-13 18:54:43,392 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 [2022-07-13 18:54:43,394 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 326 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 18:54:43,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 375 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 18:54:43,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28488 states. [2022-07-13 18:54:49,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28488 to 14046. [2022-07-13 18:54:49,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14046 states, 14045 states have (on average 1.2922748309006764) internal successors, (18150), 14045 states have internal predecessors, (18150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:54:49,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14046 states to 14046 states and 18150 transitions. [2022-07-13 18:54:49,024 INFO L78 Accepts]: Start accepts. Automaton has 14046 states and 18150 transitions. Word has length 102 [2022-07-13 18:54:49,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:54:49,024 INFO L495 AbstractCegarLoop]: Abstraction has 14046 states and 18150 transitions. [2022-07-13 18:54:49,024 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) [2022-07-13 18:54:49,024 INFO L276 IsEmpty]: Start isEmpty. Operand 14046 states and 18150 transitions. [2022-07-13 18:54:49,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 18:54:49,027 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:54:49,027 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] [2022-07-13 18:54:49,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-07-13 18:54:49,027 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)] === [2022-07-13 18:54:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:54:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1774298759, now seen corresponding path program 1 times [2022-07-13 18:54:49,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:54:49,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443010604] [2022-07-13 18:54:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:54:49,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:54:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:54:49,261 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:54:49,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:54:49,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443010604] [2022-07-13 18:54:49,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443010604] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:54:49,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040026862] [2022-07-13 18:54:49,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:54:49,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:54:49,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:54:49,272 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) [2022-07-13 18:54:49,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 18:54:49,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:54:49,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 18:54:49,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:54:49,572 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 18:54:49,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:54:49,968 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 18:54:49,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040026862] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:54:49,969 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:54:49,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 5, 5] total 20 [2022-07-13 18:54:49,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932340930] [2022-07-13 18:54:49,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:54:49,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-13 18:54:49,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:54:49,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-13 18:54:49,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-07-13 18:54:49,971 INFO L87 Difference]: Start difference. First operand 14046 states and 18150 transitions. Second operand has 20 states, 20 states have (on average 13.9) internal successors, (278), 20 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:55:32,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:55:32,133 INFO L93 Difference]: Finished difference Result 100232 states and 128956 transitions. [2022-07-13 18:55:32,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2022-07-13 18:55:32,133 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.9) internal successors, (278), 20 states have internal predecessors, (278), 0 states have call successors, (0), 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 [2022-07-13 18:55:32,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:55:32,293 INFO L225 Difference]: With dead ends: 100232 [2022-07-13 18:55:32,294 INFO L226 Difference]: Without dead ends: 86278 [2022-07-13 18:55:32,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11770 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=3611, Invalid=25459, Unknown=0, NotChecked=0, Total=29070 [2022-07-13 18:55:32,352 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 4122 mSDsluCounter, 2382 mSDsCounter, 0 mSdLazyCounter, 3112 mSolverCounterSat, 262 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4122 SdHoareTripleChecker+Valid, 2593 SdHoareTripleChecker+Invalid, 3374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 262 IncrementalHoareTripleChecker+Valid, 3112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:55:32,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4122 Valid, 2593 Invalid, 3374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [262 Valid, 3112 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-13 18:55:32,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86278 states. [2022-07-13 18:55:45,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86278 to 26670. [2022-07-13 18:55:45,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26670 states, 26669 states have (on average 1.3005362030822303) internal successors, (34684), 26669 states have internal predecessors, (34684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:55:45,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26670 states to 26670 states and 34684 transitions. [2022-07-13 18:55:45,279 INFO L78 Accepts]: Start accepts. Automaton has 26670 states and 34684 transitions. Word has length 103 [2022-07-13 18:55:45,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:55:45,279 INFO L495 AbstractCegarLoop]: Abstraction has 26670 states and 34684 transitions. [2022-07-13 18:55:45,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.9) internal successors, (278), 20 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:55:45,280 INFO L276 IsEmpty]: Start isEmpty. Operand 26670 states and 34684 transitions. [2022-07-13 18:55:45,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 18:55:45,290 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:55:45,291 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] [2022-07-13 18:55:45,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 18:55:45,507 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 [2022-07-13 18:55:45,507 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)] === [2022-07-13 18:55:45,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:55:45,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1898723711, now seen corresponding path program 1 times [2022-07-13 18:55:45,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:55:45,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527869948] [2022-07-13 18:55:45,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:55:45,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:55:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:55:45,652 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:55:45,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:55:45,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527869948] [2022-07-13 18:55:45,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527869948] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:55:45,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285070432] [2022-07-13 18:55:45,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:55:45,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:55:45,653 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:55:45,654 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) [2022-07-13 18:55:45,658 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 18:55:45,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:55:45,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 512 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-13 18:55:45,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:55:47,368 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 18:55:47,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 18:55:47,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285070432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 18:55:47,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 18:55:47,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [11] total 29 [2022-07-13 18:55:47,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182901292] [2022-07-13 18:55:47,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 18:55:47,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-13 18:55:47,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:55:47,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-13 18:55:47,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2022-07-13 18:55:47,371 INFO L87 Difference]: Start difference. First operand 26670 states and 34684 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:56:28,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:56:28,616 INFO L93 Difference]: Finished difference Result 103410 states and 134334 transitions. [2022-07-13 18:56:28,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-13 18:56:28,616 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 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 104 [2022-07-13 18:56:28,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:56:28,751 INFO L225 Difference]: With dead ends: 103410 [2022-07-13 18:56:28,751 INFO L226 Difference]: Without dead ends: 88284 [2022-07-13 18:56:28,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2022-07-13 18:56:28,785 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 304 mSDsluCounter, 2136 mSDsCounter, 0 mSdLazyCounter, 919 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 2357 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 18:56:28,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 2357 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 919 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 18:56:28,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88284 states. [2022-07-13 18:56:42,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88284 to 26675. [2022-07-13 18:56:42,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26675 states, 26674 states have (on average 1.3004798680362901) internal successors, (34689), 26674 states have internal predecessors, (34689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:56:42,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26675 states to 26675 states and 34689 transitions. [2022-07-13 18:56:42,668 INFO L78 Accepts]: Start accepts. Automaton has 26675 states and 34689 transitions. Word has length 104 [2022-07-13 18:56:42,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 18:56:42,669 INFO L495 AbstractCegarLoop]: Abstraction has 26675 states and 34689 transitions. [2022-07-13 18:56:42,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 19 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:56:42,669 INFO L276 IsEmpty]: Start isEmpty. Operand 26675 states and 34689 transitions. [2022-07-13 18:56:42,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 18:56:42,671 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 18:56:42,672 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, 1] [2022-07-13 18:56:42,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 18:56:42,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:56:42,889 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2022-07-13 18:56:42,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 18:56:42,889 INFO L85 PathProgramCache]: Analyzing trace with hash -653298369, now seen corresponding path program 1 times [2022-07-13 18:56:42,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 18:56:42,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810897776] [2022-07-13 18:56:42,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:56:42,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 18:56:42,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:56:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:56:43,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 18:56:43,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810897776] [2022-07-13 18:56:43,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810897776] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 18:56:43,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675556227] [2022-07-13 18:56:43,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 18:56:43,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 18:56:43,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 18:56:43,083 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 18:56:43,095 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 18:56:43,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 18:56:43,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-13 18:56:43,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 18:57:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:57:13,153 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 18:57:14,765 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 18:57:14,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1675556227] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 18:57:14,765 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 18:57:14,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 11, 11] total 29 [2022-07-13 18:57:14,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051452407] [2022-07-13 18:57:14,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 18:57:14,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2022-07-13 18:57:14,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 18:57:14,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2022-07-13 18:57:14,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=746, Unknown=14, NotChecked=0, Total=870 [2022-07-13 18:57:14,767 INFO L87 Difference]: Start difference. First operand 26675 states and 34689 transitions. Second operand has 30 states, 30 states have (on average 8.966666666666667) internal successors, (269), 29 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 18:57:36,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 18:57:36,848 INFO L93 Difference]: Finished difference Result 44351 states and 57249 transitions. [2022-07-13 18:57:36,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-07-13 18:57:36,849 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 8.966666666666667) internal successors, (269), 29 states have internal predecessors, (269), 0 states have call successors, (0), 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 105 [2022-07-13 18:57:36,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 18:57:36,882 INFO L225 Difference]: With dead ends: 44351 [2022-07-13 18:57:36,883 INFO L226 Difference]: Without dead ends: 27924 [2022-07-13 18:57:36,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 195 SyntacticMatches, 2 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 36.9s TimeCoverageRelationStatistics Valid=391, Invalid=1849, Unknown=16, NotChecked=0, Total=2256 [2022-07-13 18:57:36,896 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 476 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 1149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 305 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-13 18:57:36,896 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1617 Invalid, 1149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 818 Invalid, 0 Unknown, 305 Unchecked, 0.5s Time] [2022-07-13 18:57:36,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27924 states.