./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 532121231e517c5ccd98a51763e37538cc4af219147e372fd62404dc9cc0f64d --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 18:18:21,362 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 18:18:21,364 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 18:18:21,437 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 18:18:21,438 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 18:18:21,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 18:18:21,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 18:18:21,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 18:18:21,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 18:18:21,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 18:18:21,449 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 18:18:21,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 18:18:21,451 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 18:18:21,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 18:18:21,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 18:18:21,456 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 18:18:21,456 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 18:18:21,457 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 18:18:21,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 18:18:21,468 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 18:18:21,470 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 18:18:21,470 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 18:18:21,471 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 18:18:21,472 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 18:18:21,473 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 18:18:21,493 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 18:18:21,493 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 18:18:21,493 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 18:18:21,494 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 18:18:21,495 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 18:18:21,496 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 18:18:21,496 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 18:18:21,497 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 18:18:21,497 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 18:18:21,498 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 18:18:21,498 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 18:18:21,499 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 18:18:21,500 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 18:18:21,500 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 18:18:21,500 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 18:18:21,501 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 18:18:21,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 18:18:21,503 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-22 18:18:21,546 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 18:18:21,546 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 18:18:21,546 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 18:18:21,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 18:18:21,547 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 18:18:21,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 18:18:21,548 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 18:18:21,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 18:18:21,548 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 18:18:21,549 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 18:18:21,549 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-22 18:18:21,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 18:18:21,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-22 18:18:21,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 18:18:21,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 18:18:21,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 18:18:21,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 18:18:21,551 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-22 18:18:21,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 18:18:21,551 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 18:18:21,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 18:18:21,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 18:18:21,552 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 18:18:21,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 18:18:21,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:18:21,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 18:18:21,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 18:18:21,553 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 18:18:21,553 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 18:18:21,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 18:18:21,553 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 18:18:21,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 18:18:21,554 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 18:18:21,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 532121231e517c5ccd98a51763e37538cc4af219147e372fd62404dc9cc0f64d [2022-07-22 18:18:21,963 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 18:18:21,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 18:18:21,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 18:18:22,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 18:18:22,002 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 18:18:22,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-07-22 18:18:22,104 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d057eaea3/8f54557e7f8049dcbe317d4dfc086c7e/FLAG8e85f2dab [2022-07-22 18:18:22,954 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 18:18:22,954 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-07-22 18:18:22,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d057eaea3/8f54557e7f8049dcbe317d4dfc086c7e/FLAG8e85f2dab [2022-07-22 18:18:23,099 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d057eaea3/8f54557e7f8049dcbe317d4dfc086c7e [2022-07-22 18:18:23,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 18:18:23,103 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 18:18:23,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 18:18:23,105 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 18:18:23,107 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 18:18:23,108 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:18:23" (1/1) ... [2022-07-22 18:18:23,109 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46e3e778 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:23, skipping insertion in model container [2022-07-22 18:18:23,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 06:18:23" (1/1) ... [2022-07-22 18:18:23,115 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 18:18:23,232 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 18:18:23,662 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8426,8439] [2022-07-22 18:18:23,723 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12993,13006] [2022-07-22 18:18:23,774 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20763,20776] [2022-07-22 18:18:23,838 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27894,27907] [2022-07-22 18:18:23,941 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49218,49231] [2022-07-22 18:18:24,082 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80449,80462] [2022-07-22 18:18:24,399 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:18:24,429 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 18:18:24,502 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[8426,8439] [2022-07-22 18:18:24,582 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12993,13006] [2022-07-22 18:18:24,655 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[20763,20776] [2022-07-22 18:18:24,693 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[27894,27907] [2022-07-22 18:18:24,791 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[49218,49231] [2022-07-22 18:18:24,838 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-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[80449,80462] [2022-07-22 18:18:24,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 18:18:24,961 INFO L208 MainTranslator]: Completed translation [2022-07-22 18:18:24,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:24 WrapperNode [2022-07-22 18:18:24,962 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 18:18:24,962 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 18:18:24,963 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 18:18:24,963 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 18:18:24,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:24" (1/1) ... [2022-07-22 18:18:25,006 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:24" (1/1) ... [2022-07-22 18:18:25,137 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5971 [2022-07-22 18:18:25,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 18:18:25,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 18:18:25,139 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 18:18:25,139 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 18:18:25,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:24" (1/1) ... [2022-07-22 18:18:25,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:24" (1/1) ... [2022-07-22 18:18:25,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:24" (1/1) ... [2022-07-22 18:18:25,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:24" (1/1) ... [2022-07-22 18:18:25,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:24" (1/1) ... [2022-07-22 18:18:25,283 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:24" (1/1) ... [2022-07-22 18:18:25,301 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:24" (1/1) ... [2022-07-22 18:18:25,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 18:18:25,323 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 18:18:25,323 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 18:18:25,323 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 18:18:25,324 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:24" (1/1) ... [2022-07-22 18:18:25,329 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 18:18:25,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 18:18:25,351 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 18:18:25,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 18:18:25,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 18:18:25,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 18:18:25,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 18:18:25,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 18:18:25,631 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 18:18:25,632 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 18:18:27,394 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 18:18:27,408 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 18:18:27,408 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 18:18:27,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:18:27 BoogieIcfgContainer [2022-07-22 18:18:27,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 18:18:27,413 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 18:18:27,413 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 18:18:27,416 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 18:18:27,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 06:18:23" (1/3) ... [2022-07-22 18:18:27,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc4a47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:18:27, skipping insertion in model container [2022-07-22 18:18:27,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 06:18:24" (2/3) ... [2022-07-22 18:18:27,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bc4a47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 06:18:27, skipping insertion in model container [2022-07-22 18:18:27,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 06:18:27" (3/3) ... [2022-07-22 18:18:27,418 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.1.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2022-07-22 18:18:27,429 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 18:18:27,429 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-07-22 18:18:27,485 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 18:18:27,490 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@13da2089, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@36a240b5 [2022-07-22 18:18:27,490 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-07-22 18:18:27,497 INFO L276 IsEmpty]: Start isEmpty. Operand has 1290 states, 1283 states have (on average 1.7716289945440373) internal successors, (2273), 1289 states have internal predecessors, (2273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:27,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-07-22 18:18:27,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:27,515 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:27,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:27,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:27,519 INFO L85 PathProgramCache]: Analyzing trace with hash 692081489, now seen corresponding path program 1 times [2022-07-22 18:18:27,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:27,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282090449] [2022-07-22 18:18:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:27,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:27,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:27,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:27,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282090449] [2022-07-22 18:18:27,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282090449] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:27,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:27,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:18:27,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38698024] [2022-07-22 18:18:27,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:27,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:18:27,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:27,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:18:27,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:18:27,789 INFO L87 Difference]: Start difference. First operand has 1290 states, 1283 states have (on average 1.7716289945440373) internal successors, (2273), 1289 states have internal predecessors, (2273), 0 states have call successors, (0), 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 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:29,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:29,044 INFO L93 Difference]: Finished difference Result 2522 states and 4334 transitions. [2022-07-22 18:18:29,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:18:29,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2022-07-22 18:18:29,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:29,062 INFO L225 Difference]: With dead ends: 2522 [2022-07-22 18:18:29,062 INFO L226 Difference]: Without dead ends: 1598 [2022-07-22 18:18:29,084 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:29,087 INFO L413 NwaCegarLoop]: 1054 mSDtfsCounter, 7038 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7038 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 1340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:29,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7038 Valid, 1564 Invalid, 1340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 18:18:29,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2022-07-22 18:18:29,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1592. [2022-07-22 18:18:29,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1592 states, 1586 states have (on average 1.3076923076923077) internal successors, (2074), 1591 states have internal predecessors, (2074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1592 states to 1592 states and 2074 transitions. [2022-07-22 18:18:29,191 INFO L78 Accepts]: Start accepts. Automaton has 1592 states and 2074 transitions. Word has length 52 [2022-07-22 18:18:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:29,191 INFO L495 AbstractCegarLoop]: Abstraction has 1592 states and 2074 transitions. [2022-07-22 18:18:29,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:29,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1592 states and 2074 transitions. [2022-07-22 18:18:29,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 18:18:29,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:29,195 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:29,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 18:18:29,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:29,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:29,196 INFO L85 PathProgramCache]: Analyzing trace with hash -736362272, now seen corresponding path program 1 times [2022-07-22 18:18:29,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:29,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810805966] [2022-07-22 18:18:29,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:29,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:29,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:29,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:29,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810805966] [2022-07-22 18:18:29,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810805966] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:29,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:29,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:18:29,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254389117] [2022-07-22 18:18:29,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:29,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:18:29,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:29,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:18:29,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:18:29,280 INFO L87 Difference]: Start difference. First operand 1592 states and 2074 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:30,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:30,149 INFO L93 Difference]: Finished difference Result 3210 states and 4213 transitions. [2022-07-22 18:18:30,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:18:30,149 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-22 18:18:30,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:30,158 INFO L225 Difference]: With dead ends: 3210 [2022-07-22 18:18:30,158 INFO L226 Difference]: Without dead ends: 2216 [2022-07-22 18:18:30,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:30,164 INFO L413 NwaCegarLoop]: 698 mSDtfsCounter, 4958 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4958 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:30,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4958 Valid, 1044 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-22 18:18:30,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2022-07-22 18:18:30,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2202. [2022-07-22 18:18:30,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2202 states, 2196 states have (on average 1.3183060109289617) internal successors, (2895), 2201 states have internal predecessors, (2895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:30,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2202 states to 2202 states and 2895 transitions. [2022-07-22 18:18:30,254 INFO L78 Accepts]: Start accepts. Automaton has 2202 states and 2895 transitions. Word has length 53 [2022-07-22 18:18:30,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:30,254 INFO L495 AbstractCegarLoop]: Abstraction has 2202 states and 2895 transitions. [2022-07-22 18:18:30,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:30,255 INFO L276 IsEmpty]: Start isEmpty. Operand 2202 states and 2895 transitions. [2022-07-22 18:18:30,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-07-22 18:18:30,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:30,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:30,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 18:18:30,258 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:30,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:30,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1386389066, now seen corresponding path program 1 times [2022-07-22 18:18:30,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:30,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413366453] [2022-07-22 18:18:30,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:30,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:30,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:30,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:30,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413366453] [2022-07-22 18:18:30,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413366453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:30,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:30,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-22 18:18:30,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946550626] [2022-07-22 18:18:30,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:30,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:18:30,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:30,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:18:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:18:30,355 INFO L87 Difference]: Start difference. First operand 2202 states and 2895 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:31,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:31,089 INFO L93 Difference]: Finished difference Result 4509 states and 5999 transitions. [2022-07-22 18:18:31,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:18:31,090 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-07-22 18:18:31,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:31,100 INFO L225 Difference]: With dead ends: 4509 [2022-07-22 18:18:31,100 INFO L226 Difference]: Without dead ends: 3078 [2022-07-22 18:18:31,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:31,104 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 4448 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4448 SdHoareTripleChecker+Valid, 932 SdHoareTripleChecker+Invalid, 827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:31,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4448 Valid, 932 Invalid, 827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 782 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-22 18:18:31,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2022-07-22 18:18:31,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3068. [2022-07-22 18:18:31,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3062 states have (on average 1.3229915088177662) internal successors, (4051), 3067 states have internal predecessors, (4051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:31,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4051 transitions. [2022-07-22 18:18:31,254 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4051 transitions. Word has length 53 [2022-07-22 18:18:31,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:31,254 INFO L495 AbstractCegarLoop]: Abstraction has 3068 states and 4051 transitions. [2022-07-22 18:18:31,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 4 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:31,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4051 transitions. [2022-07-22 18:18:31,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 18:18:31,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:31,257 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:31,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 18:18:31,257 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:31,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1763239895, now seen corresponding path program 1 times [2022-07-22 18:18:31,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:31,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197608553] [2022-07-22 18:18:31,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:31,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:31,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:31,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197608553] [2022-07-22 18:18:31,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197608553] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:31,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:31,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 18:18:31,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427358126] [2022-07-22 18:18:31,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:31,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 18:18:31,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:31,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 18:18:31,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-22 18:18:31,468 INFO L87 Difference]: Start difference. First operand 3068 states and 4051 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:32,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:32,966 INFO L93 Difference]: Finished difference Result 6217 states and 8707 transitions. [2022-07-22 18:18:32,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 18:18:32,966 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-07-22 18:18:32,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:32,980 INFO L225 Difference]: With dead ends: 6217 [2022-07-22 18:18:32,980 INFO L226 Difference]: Without dead ends: 5513 [2022-07-22 18:18:32,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-07-22 18:18:32,983 INFO L413 NwaCegarLoop]: 668 mSDtfsCounter, 4654 mSDsluCounter, 2181 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4654 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 2348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:32,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4654 Valid, 2849 Invalid, 2348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-22 18:18:32,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5513 states. [2022-07-22 18:18:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5513 to 3068. [2022-07-22 18:18:33,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3062 states have (on average 1.3226649248856956) internal successors, (4050), 3067 states have internal predecessors, (4050), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:33,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4050 transitions. [2022-07-22 18:18:33,135 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4050 transitions. Word has length 55 [2022-07-22 18:18:33,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:33,135 INFO L495 AbstractCegarLoop]: Abstraction has 3068 states and 4050 transitions. [2022-07-22 18:18:33,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:33,136 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4050 transitions. [2022-07-22 18:18:33,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 18:18:33,138 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:33,138 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:33,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 18:18:33,138 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:33,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:33,139 INFO L85 PathProgramCache]: Analyzing trace with hash 622296368, now seen corresponding path program 1 times [2022-07-22 18:18:33,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:33,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678737154] [2022-07-22 18:18:33,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:33,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:33,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:33,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:33,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678737154] [2022-07-22 18:18:33,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678737154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:33,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:33,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:18:33,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598387905] [2022-07-22 18:18:33,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:33,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:18:33,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:33,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:18:33,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:18:33,281 INFO L87 Difference]: Start difference. First operand 3068 states and 4050 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:35,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:35,200 INFO L93 Difference]: Finished difference Result 6021 states and 8276 transitions. [2022-07-22 18:18:35,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 18:18:35,201 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-07-22 18:18:35,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:35,214 INFO L225 Difference]: With dead ends: 6021 [2022-07-22 18:18:35,215 INFO L226 Difference]: Without dead ends: 5451 [2022-07-22 18:18:35,216 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-07-22 18:18:35,217 INFO L413 NwaCegarLoop]: 685 mSDtfsCounter, 5528 mSDsluCounter, 3127 mSDsCounter, 0 mSdLazyCounter, 3806 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5528 SdHoareTripleChecker+Valid, 3812 SdHoareTripleChecker+Invalid, 3998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 3806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:35,217 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5528 Valid, 3812 Invalid, 3998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 3806 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-07-22 18:18:35,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5451 states. [2022-07-22 18:18:35,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5451 to 3068. [2022-07-22 18:18:35,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3062 states have (on average 1.3223383409536251) internal successors, (4049), 3067 states have internal predecessors, (4049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:35,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4049 transitions. [2022-07-22 18:18:35,364 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4049 transitions. Word has length 55 [2022-07-22 18:18:35,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:35,364 INFO L495 AbstractCegarLoop]: Abstraction has 3068 states and 4049 transitions. [2022-07-22 18:18:35,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:35,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4049 transitions. [2022-07-22 18:18:35,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-07-22 18:18:35,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:35,367 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:35,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 18:18:35,367 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:35,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:35,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1268497001, now seen corresponding path program 1 times [2022-07-22 18:18:35,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:35,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948908747] [2022-07-22 18:18:35,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:35,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:35,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:35,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:35,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:35,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948908747] [2022-07-22 18:18:35,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948908747] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:35,469 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:35,469 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 18:18:35,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894673834] [2022-07-22 18:18:35,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:35,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 18:18:35,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:35,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 18:18:35,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:18:35,470 INFO L87 Difference]: Start difference. First operand 3068 states and 4049 transitions. Second operand has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:37,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:37,345 INFO L93 Difference]: Finished difference Result 5707 states and 7871 transitions. [2022-07-22 18:18:37,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 18:18:37,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-07-22 18:18:37,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:37,360 INFO L225 Difference]: With dead ends: 5707 [2022-07-22 18:18:37,360 INFO L226 Difference]: Without dead ends: 5701 [2022-07-22 18:18:37,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2022-07-22 18:18:37,362 INFO L413 NwaCegarLoop]: 692 mSDtfsCounter, 5552 mSDsluCounter, 2559 mSDsCounter, 0 mSdLazyCounter, 2808 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5552 SdHoareTripleChecker+Valid, 3251 SdHoareTripleChecker+Invalid, 2927 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2808 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:37,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5552 Valid, 3251 Invalid, 2927 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2808 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 18:18:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5701 states. [2022-07-22 18:18:37,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5701 to 3068. [2022-07-22 18:18:37,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3068 states, 3062 states have (on average 1.3220117570215546) internal successors, (4048), 3067 states have internal predecessors, (4048), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3068 states to 3068 states and 4048 transitions. [2022-07-22 18:18:37,519 INFO L78 Accepts]: Start accepts. Automaton has 3068 states and 4048 transitions. Word has length 55 [2022-07-22 18:18:37,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:37,520 INFO L495 AbstractCegarLoop]: Abstraction has 3068 states and 4048 transitions. [2022-07-22 18:18:37,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.111111111111111) internal successors, (55), 8 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3068 states and 4048 transitions. [2022-07-22 18:18:37,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 18:18:37,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:37,522 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:37,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 18:18:37,523 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:37,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:37,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1662572980, now seen corresponding path program 1 times [2022-07-22 18:18:37,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:37,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145640896] [2022-07-22 18:18:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:37,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:37,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:37,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:37,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145640896] [2022-07-22 18:18:37,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145640896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:37,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:37,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:18:37,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169339810] [2022-07-22 18:18:37,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:37,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:18:37,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:37,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:18:37,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:37,562 INFO L87 Difference]: Start difference. First operand 3068 states and 4048 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:37,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:37,766 INFO L93 Difference]: Finished difference Result 4024 states and 5497 transitions. [2022-07-22 18:18:37,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:18:37,766 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-07-22 18:18:37,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:37,787 INFO L225 Difference]: With dead ends: 4024 [2022-07-22 18:18:37,788 INFO L226 Difference]: Without dead ends: 3087 [2022-07-22 18:18:37,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:37,791 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 579 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 579 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:37,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [579 Valid, 1790 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:18:37,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3087 states. [2022-07-22 18:18:37,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3087 to 3085. [2022-07-22 18:18:37,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3085 states, 3079 states have (on average 1.3380967846703475) internal successors, (4120), 3084 states have internal predecessors, (4120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:37,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3085 states to 3085 states and 4120 transitions. [2022-07-22 18:18:37,952 INFO L78 Accepts]: Start accepts. Automaton has 3085 states and 4120 transitions. Word has length 56 [2022-07-22 18:18:37,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:37,953 INFO L495 AbstractCegarLoop]: Abstraction has 3085 states and 4120 transitions. [2022-07-22 18:18:37,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:37,954 INFO L276 IsEmpty]: Start isEmpty. Operand 3085 states and 4120 transitions. [2022-07-22 18:18:37,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 18:18:37,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:37,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:37,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 18:18:37,957 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:37,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:37,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1775531576, now seen corresponding path program 1 times [2022-07-22 18:18:37,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:37,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029819954] [2022-07-22 18:18:37,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:37,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:38,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:38,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:38,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029819954] [2022-07-22 18:18:38,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029819954] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:38,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:38,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:18:38,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841556793] [2022-07-22 18:18:38,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:38,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:18:38,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:38,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:18:38,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:38,012 INFO L87 Difference]: Start difference. First operand 3085 states and 4120 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:38,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:38,243 INFO L93 Difference]: Finished difference Result 4759 states and 6655 transitions. [2022-07-22 18:18:38,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:18:38,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-07-22 18:18:38,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:38,250 INFO L225 Difference]: With dead ends: 4759 [2022-07-22 18:18:38,250 INFO L226 Difference]: Without dead ends: 3515 [2022-07-22 18:18:38,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:38,252 INFO L413 NwaCegarLoop]: 1145 mSDtfsCounter, 587 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:38,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [587 Valid, 1728 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:18:38,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3515 states. [2022-07-22 18:18:38,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3515 to 3513. [2022-07-22 18:18:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3507 states have (on average 1.3695466210436271) internal successors, (4803), 3512 states have internal predecessors, (4803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:38,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4803 transitions. [2022-07-22 18:18:38,514 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4803 transitions. Word has length 56 [2022-07-22 18:18:38,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:38,514 INFO L495 AbstractCegarLoop]: Abstraction has 3513 states and 4803 transitions. [2022-07-22 18:18:38,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:38,515 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4803 transitions. [2022-07-22 18:18:38,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-07-22 18:18:38,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:38,517 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:38,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 18:18:38,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:38,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:38,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1498951000, now seen corresponding path program 1 times [2022-07-22 18:18:38,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:38,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106150505] [2022-07-22 18:18:38,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:38,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:38,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:38,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106150505] [2022-07-22 18:18:38,549 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106150505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:38,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:38,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:18:38,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307834939] [2022-07-22 18:18:38,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:38,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:18:38,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:38,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:18:38,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:38,551 INFO L87 Difference]: Start difference. First operand 3513 states and 4803 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:38,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:38,958 INFO L93 Difference]: Finished difference Result 7723 states and 10788 transitions. [2022-07-22 18:18:38,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:18:38,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-07-22 18:18:38,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:38,966 INFO L225 Difference]: With dead ends: 7723 [2022-07-22 18:18:38,967 INFO L226 Difference]: Without dead ends: 5314 [2022-07-22 18:18:38,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:38,970 INFO L413 NwaCegarLoop]: 1215 mSDtfsCounter, 657 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:38,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 1963 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:18:38,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5314 states. [2022-07-22 18:18:39,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5314 to 5308. [2022-07-22 18:18:39,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5308 states, 5302 states have (on average 1.3583553376084496) internal successors, (7202), 5307 states have internal predecessors, (7202), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:39,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5308 states to 5308 states and 7202 transitions. [2022-07-22 18:18:39,327 INFO L78 Accepts]: Start accepts. Automaton has 5308 states and 7202 transitions. Word has length 56 [2022-07-22 18:18:39,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:39,328 INFO L495 AbstractCegarLoop]: Abstraction has 5308 states and 7202 transitions. [2022-07-22 18:18:39,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:39,328 INFO L276 IsEmpty]: Start isEmpty. Operand 5308 states and 7202 transitions. [2022-07-22 18:18:39,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 18:18:39,331 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:39,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:39,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 18:18:39,332 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:39,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:39,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1118792296, now seen corresponding path program 1 times [2022-07-22 18:18:39,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:39,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600086581] [2022-07-22 18:18:39,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:39,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:39,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:39,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:39,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:39,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600086581] [2022-07-22 18:18:39,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600086581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:39,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:39,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:18:39,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067347393] [2022-07-22 18:18:39,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:39,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:18:39,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:39,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:18:39,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:18:39,637 INFO L87 Difference]: Start difference. First operand 5308 states and 7202 transitions. Second operand has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:42,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:42,084 INFO L93 Difference]: Finished difference Result 11562 states and 16051 transitions. [2022-07-22 18:18:42,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 18:18:42,084 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-22 18:18:42,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:42,104 INFO L225 Difference]: With dead ends: 11562 [2022-07-22 18:18:42,104 INFO L226 Difference]: Without dead ends: 11451 [2022-07-22 18:18:42,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2022-07-22 18:18:42,109 INFO L413 NwaCegarLoop]: 1091 mSDtfsCounter, 7303 mSDsluCounter, 5154 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7303 SdHoareTripleChecker+Valid, 6245 SdHoareTripleChecker+Invalid, 1899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:42,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7303 Valid, 6245 Invalid, 1899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 18:18:42,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11451 states. [2022-07-22 18:18:42,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11451 to 5295. [2022-07-22 18:18:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5295 states, 5290 states have (on average 1.3586011342155009) internal successors, (7187), 5294 states have internal predecessors, (7187), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5295 states to 5295 states and 7187 transitions. [2022-07-22 18:18:42,703 INFO L78 Accepts]: Start accepts. Automaton has 5295 states and 7187 transitions. Word has length 57 [2022-07-22 18:18:42,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:42,704 INFO L495 AbstractCegarLoop]: Abstraction has 5295 states and 7187 transitions. [2022-07-22 18:18:42,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.75) internal successors, (57), 12 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:42,704 INFO L276 IsEmpty]: Start isEmpty. Operand 5295 states and 7187 transitions. [2022-07-22 18:18:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 18:18:42,707 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:42,707 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:42,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 18:18:42,707 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:42,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:42,708 INFO L85 PathProgramCache]: Analyzing trace with hash -677466950, now seen corresponding path program 1 times [2022-07-22 18:18:42,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:42,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808366695] [2022-07-22 18:18:42,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:42,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:42,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:42,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808366695] [2022-07-22 18:18:42,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808366695] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:42,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:42,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:18:42,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466250412] [2022-07-22 18:18:42,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:42,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:18:42,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:42,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:18:42,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:42,739 INFO L87 Difference]: Start difference. First operand 5295 states and 7187 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:43,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:43,521 INFO L93 Difference]: Finished difference Result 9765 states and 13510 transitions. [2022-07-22 18:18:43,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:18:43,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-22 18:18:43,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:43,535 INFO L225 Difference]: With dead ends: 9765 [2022-07-22 18:18:43,535 INFO L226 Difference]: Without dead ends: 5599 [2022-07-22 18:18:43,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:43,541 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 820 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:43,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 1221 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:18:43,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5599 states. [2022-07-22 18:18:44,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5599 to 4466. [2022-07-22 18:18:44,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4466 states, 4462 states have (on average 1.3798744957418199) internal successors, (6157), 4465 states have internal predecessors, (6157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:44,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4466 states to 4466 states and 6157 transitions. [2022-07-22 18:18:44,034 INFO L78 Accepts]: Start accepts. Automaton has 4466 states and 6157 transitions. Word has length 57 [2022-07-22 18:18:44,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:44,035 INFO L495 AbstractCegarLoop]: Abstraction has 4466 states and 6157 transitions. [2022-07-22 18:18:44,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:44,035 INFO L276 IsEmpty]: Start isEmpty. Operand 4466 states and 6157 transitions. [2022-07-22 18:18:44,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 18:18:44,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:44,037 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:44,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 18:18:44,037 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:44,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:44,038 INFO L85 PathProgramCache]: Analyzing trace with hash -611117000, now seen corresponding path program 1 times [2022-07-22 18:18:44,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:44,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213021714] [2022-07-22 18:18:44,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:44,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:44,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:44,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:44,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213021714] [2022-07-22 18:18:44,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213021714] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:44,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:44,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:18:44,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023858020] [2022-07-22 18:18:44,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:44,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:18:44,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:44,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:18:44,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:44,081 INFO L87 Difference]: Start difference. First operand 4466 states and 6157 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:44,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:44,676 INFO L93 Difference]: Finished difference Result 8537 states and 11996 transitions. [2022-07-22 18:18:44,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:18:44,677 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-22 18:18:44,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:44,685 INFO L225 Difference]: With dead ends: 8537 [2022-07-22 18:18:44,685 INFO L226 Difference]: Without dead ends: 4871 [2022-07-22 18:18:44,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:44,690 INFO L413 NwaCegarLoop]: 697 mSDtfsCounter, 638 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:44,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 1002 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:18:44,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4871 states. [2022-07-22 18:18:45,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4871 to 3897. [2022-07-22 18:18:45,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3897 states, 3894 states have (on average 1.3931689779147407) internal successors, (5425), 3896 states have internal predecessors, (5425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3897 states to 3897 states and 5425 transitions. [2022-07-22 18:18:45,177 INFO L78 Accepts]: Start accepts. Automaton has 3897 states and 5425 transitions. Word has length 57 [2022-07-22 18:18:45,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:45,177 INFO L495 AbstractCegarLoop]: Abstraction has 3897 states and 5425 transitions. [2022-07-22 18:18:45,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,178 INFO L276 IsEmpty]: Start isEmpty. Operand 3897 states and 5425 transitions. [2022-07-22 18:18:45,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-07-22 18:18:45,179 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:45,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:45,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 18:18:45,179 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:45,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:45,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1274837938, now seen corresponding path program 1 times [2022-07-22 18:18:45,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:45,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019150703] [2022-07-22 18:18:45,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:45,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:45,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:45,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:45,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019150703] [2022-07-22 18:18:45,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019150703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:45,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:45,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:18:45,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870642774] [2022-07-22 18:18:45,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:45,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:18:45,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:45,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:18:45,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:45,207 INFO L87 Difference]: Start difference. First operand 3897 states and 5425 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:45,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:45,844 INFO L93 Difference]: Finished difference Result 7794 states and 11032 transitions. [2022-07-22 18:18:45,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:18:45,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-07-22 18:18:45,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:45,849 INFO L225 Difference]: With dead ends: 7794 [2022-07-22 18:18:45,849 INFO L226 Difference]: Without dead ends: 4239 [2022-07-22 18:18:45,852 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:18:45,853 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 453 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:45,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [453 Valid, 828 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:18:45,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4239 states. [2022-07-22 18:18:46,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4239 to 3480. [2022-07-22 18:18:46,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3480 states, 3477 states have (on average 1.4075352315214265) internal successors, (4894), 3479 states have internal predecessors, (4894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:46,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3480 states to 3480 states and 4894 transitions. [2022-07-22 18:18:46,416 INFO L78 Accepts]: Start accepts. Automaton has 3480 states and 4894 transitions. Word has length 57 [2022-07-22 18:18:46,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:46,417 INFO L495 AbstractCegarLoop]: Abstraction has 3480 states and 4894 transitions. [2022-07-22 18:18:46,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:46,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3480 states and 4894 transitions. [2022-07-22 18:18:46,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 18:18:46,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:46,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:46,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 18:18:46,419 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:46,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:46,419 INFO L85 PathProgramCache]: Analyzing trace with hash -410378211, now seen corresponding path program 1 times [2022-07-22 18:18:46,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:46,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370522370] [2022-07-22 18:18:46,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:46,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:46,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:46,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:46,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:46,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370522370] [2022-07-22 18:18:46,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370522370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:46,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:46,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 18:18:46,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367005020] [2022-07-22 18:18:46,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:46,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 18:18:46,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:46,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 18:18:46,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-22 18:18:46,712 INFO L87 Difference]: Start difference. First operand 3480 states and 4894 transitions. Second operand has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:48,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:48,591 INFO L93 Difference]: Finished difference Result 7413 states and 10473 transitions. [2022-07-22 18:18:48,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 18:18:48,591 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-22 18:18:48,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:48,602 INFO L225 Difference]: With dead ends: 7413 [2022-07-22 18:18:48,602 INFO L226 Difference]: Without dead ends: 7261 [2022-07-22 18:18:48,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-07-22 18:18:48,605 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 3188 mSDsluCounter, 4361 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3188 SdHoareTripleChecker+Valid, 5108 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:48,605 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3188 Valid, 5108 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 18:18:48,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7261 states. [2022-07-22 18:18:49,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7261 to 3426. [2022-07-22 18:18:49,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3426 states, 3424 states have (on average 1.4082943925233644) internal successors, (4822), 3425 states have internal predecessors, (4822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:49,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3426 states to 3426 states and 4822 transitions. [2022-07-22 18:18:49,081 INFO L78 Accepts]: Start accepts. Automaton has 3426 states and 4822 transitions. Word has length 58 [2022-07-22 18:18:49,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:49,081 INFO L495 AbstractCegarLoop]: Abstraction has 3426 states and 4822 transitions. [2022-07-22 18:18:49,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.833333333333333) internal successors, (58), 12 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:49,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3426 states and 4822 transitions. [2022-07-22 18:18:49,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-07-22 18:18:49,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:49,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:49,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 18:18:49,083 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:49,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1645651769, now seen corresponding path program 1 times [2022-07-22 18:18:49,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:49,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946633741] [2022-07-22 18:18:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:49,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:49,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:49,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:49,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946633741] [2022-07-22 18:18:49,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946633741] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:49,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:49,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-07-22 18:18:49,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992918730] [2022-07-22 18:18:49,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:49,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-07-22 18:18:49,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:49,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-07-22 18:18:49,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-22 18:18:49,415 INFO L87 Difference]: Start difference. First operand 3426 states and 4822 transitions. Second operand has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:52,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:52,578 INFO L93 Difference]: Finished difference Result 6559 states and 9270 transitions. [2022-07-22 18:18:52,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-22 18:18:52,578 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-07-22 18:18:52,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:52,587 INFO L225 Difference]: With dead ends: 6559 [2022-07-22 18:18:52,587 INFO L226 Difference]: Without dead ends: 6555 [2022-07-22 18:18:52,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=240, Invalid=950, Unknown=0, NotChecked=0, Total=1190 [2022-07-22 18:18:52,589 INFO L413 NwaCegarLoop]: 632 mSDtfsCounter, 5201 mSDsluCounter, 6126 mSDsCounter, 0 mSdLazyCounter, 2525 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5201 SdHoareTripleChecker+Valid, 6758 SdHoareTripleChecker+Invalid, 2646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 2525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:52,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5201 Valid, 6758 Invalid, 2646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 2525 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 18:18:52,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6555 states. [2022-07-22 18:18:53,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6555 to 3434. [2022-07-22 18:18:53,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3434 states, 3432 states have (on average 1.407925407925408) internal successors, (4832), 3433 states have internal predecessors, (4832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:53,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3434 states to 3434 states and 4832 transitions. [2022-07-22 18:18:53,219 INFO L78 Accepts]: Start accepts. Automaton has 3434 states and 4832 transitions. Word has length 58 [2022-07-22 18:18:53,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:53,220 INFO L495 AbstractCegarLoop]: Abstraction has 3434 states and 4832 transitions. [2022-07-22 18:18:53,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.0526315789473686) internal successors, (58), 19 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:53,220 INFO L276 IsEmpty]: Start isEmpty. Operand 3434 states and 4832 transitions. [2022-07-22 18:18:53,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-22 18:18:53,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:53,221 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:18:53,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 18:18:53,221 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:53,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:53,222 INFO L85 PathProgramCache]: Analyzing trace with hash 3906094, now seen corresponding path program 1 times [2022-07-22 18:18:53,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:53,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430471214] [2022-07-22 18:18:53,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:53,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:53,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:53,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:53,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430471214] [2022-07-22 18:18:53,572 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430471214] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:53,572 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:53,572 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-22 18:18:53,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459013775] [2022-07-22 18:18:53,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:53,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-22 18:18:53,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:53,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-22 18:18:53,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-07-22 18:18:53,574 INFO L87 Difference]: Start difference. First operand 3434 states and 4832 transitions. Second operand has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:56,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:56,244 INFO L93 Difference]: Finished difference Result 6494 states and 9181 transitions. [2022-07-22 18:18:56,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 18:18:56,245 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2022-07-22 18:18:56,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:56,253 INFO L225 Difference]: With dead ends: 6494 [2022-07-22 18:18:56,253 INFO L226 Difference]: Without dead ends: 6490 [2022-07-22 18:18:56,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2022-07-22 18:18:56,255 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 3289 mSDsluCounter, 6406 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3289 SdHoareTripleChecker+Valid, 7042 SdHoareTripleChecker+Invalid, 2448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:56,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3289 Valid, 7042 Invalid, 2448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 18:18:56,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6490 states. [2022-07-22 18:18:56,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6490 to 3422. [2022-07-22 18:18:56,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3422 states, 3421 states have (on average 1.4083601286173633) internal successors, (4818), 3421 states have internal predecessors, (4818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:56,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3422 states to 3422 states and 4818 transitions. [2022-07-22 18:18:56,799 INFO L78 Accepts]: Start accepts. Automaton has 3422 states and 4818 transitions. Word has length 59 [2022-07-22 18:18:56,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:56,800 INFO L495 AbstractCegarLoop]: Abstraction has 3422 states and 4818 transitions. [2022-07-22 18:18:56,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.6875) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:56,800 INFO L276 IsEmpty]: Start isEmpty. Operand 3422 states and 4818 transitions. [2022-07-22 18:18:56,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-22 18:18:56,802 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:56,802 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] [2022-07-22 18:18:56,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-22 18:18:56,802 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:56,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:56,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1327663405, now seen corresponding path program 1 times [2022-07-22 18:18:56,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:56,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2046022394] [2022-07-22 18:18:56,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:56,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:56,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:56,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:56,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2046022394] [2022-07-22 18:18:56,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2046022394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:56,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:56,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:18:56,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401431741] [2022-07-22 18:18:56,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:56,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:18:56,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:56,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:18:56,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:18:56,849 INFO L87 Difference]: Start difference. First operand 3422 states and 4818 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:58,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:18:58,201 INFO L93 Difference]: Finished difference Result 10542 states and 15214 transitions. [2022-07-22 18:18:58,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:18:58,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2022-07-22 18:18:58,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:18:58,210 INFO L225 Difference]: With dead ends: 10542 [2022-07-22 18:18:58,210 INFO L226 Difference]: Without dead ends: 7756 [2022-07-22 18:18:58,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:18:58,214 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 1590 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:18:58,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 1115 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:18:58,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7756 states. [2022-07-22 18:18:59,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7756 to 5898. [2022-07-22 18:18:59,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5898 states, 5897 states have (on average 1.4098694251314228) internal successors, (8314), 5897 states have internal predecessors, (8314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:59,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5898 states to 5898 states and 8314 transitions. [2022-07-22 18:18:59,215 INFO L78 Accepts]: Start accepts. Automaton has 5898 states and 8314 transitions. Word has length 66 [2022-07-22 18:18:59,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:18:59,216 INFO L495 AbstractCegarLoop]: Abstraction has 5898 states and 8314 transitions. [2022-07-22 18:18:59,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:18:59,216 INFO L276 IsEmpty]: Start isEmpty. Operand 5898 states and 8314 transitions. [2022-07-22 18:18:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-22 18:18:59,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:18:59,218 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] [2022-07-22 18:18:59,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 18:18:59,218 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:18:59,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:18:59,218 INFO L85 PathProgramCache]: Analyzing trace with hash -2106166862, now seen corresponding path program 1 times [2022-07-22 18:18:59,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:18:59,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236353920] [2022-07-22 18:18:59,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:18:59,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:18:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:18:59,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:18:59,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:18:59,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236353920] [2022-07-22 18:18:59,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236353920] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:18:59,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:18:59,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:18:59,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546709659] [2022-07-22 18:18:59,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:18:59,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:18:59,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:18:59,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:18:59,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:18:59,261 INFO L87 Difference]: Start difference. First operand 5898 states and 8314 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:00,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:00,199 INFO L93 Difference]: Finished difference Result 9996 states and 14191 transitions. [2022-07-22 18:19:00,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:19:00,199 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-07-22 18:19:00,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:00,205 INFO L225 Difference]: With dead ends: 9996 [2022-07-22 18:19:00,205 INFO L226 Difference]: Without dead ends: 4712 [2022-07-22 18:19:00,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:19:00,211 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 1119 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1119 SdHoareTripleChecker+Valid, 913 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:00,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1119 Valid, 913 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:19:00,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4712 states. [2022-07-22 18:19:01,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4712 to 4708. [2022-07-22 18:19:01,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4708 states, 4707 states have (on average 1.3964308476736775) internal successors, (6573), 4707 states have internal predecessors, (6573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:01,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4708 states to 4708 states and 6573 transitions. [2022-07-22 18:19:01,104 INFO L78 Accepts]: Start accepts. Automaton has 4708 states and 6573 transitions. Word has length 67 [2022-07-22 18:19:01,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:01,105 INFO L495 AbstractCegarLoop]: Abstraction has 4708 states and 6573 transitions. [2022-07-22 18:19:01,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:01,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4708 states and 6573 transitions. [2022-07-22 18:19:01,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-22 18:19:01,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:01,107 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] [2022-07-22 18:19:01,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 18:19:01,107 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:19:01,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:01,107 INFO L85 PathProgramCache]: Analyzing trace with hash -565252104, now seen corresponding path program 1 times [2022-07-22 18:19:01,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:01,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859621292] [2022-07-22 18:19:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:01,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:01,154 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:01,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:01,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859621292] [2022-07-22 18:19:01,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859621292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:01,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:01,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:19:01,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685999209] [2022-07-22 18:19:01,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:01,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:19:01,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:01,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:19:01,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:01,156 INFO L87 Difference]: Start difference. First operand 4708 states and 6573 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:02,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:02,842 INFO L93 Difference]: Finished difference Result 12516 states and 17707 transitions. [2022-07-22 18:19:02,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:19:02,842 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-07-22 18:19:02,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:02,852 INFO L225 Difference]: With dead ends: 12516 [2022-07-22 18:19:02,853 INFO L226 Difference]: Without dead ends: 8422 [2022-07-22 18:19:02,857 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:02,858 INFO L413 NwaCegarLoop]: 580 mSDtfsCounter, 280 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 280 SdHoareTripleChecker+Valid, 868 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:02,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [280 Valid, 868 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:19:02,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8422 states. [2022-07-22 18:19:04,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8422 to 7908. [2022-07-22 18:19:04,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7908 states, 7907 states have (on average 1.3981282407992919) internal successors, (11055), 7907 states have internal predecessors, (11055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:04,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7908 states to 7908 states and 11055 transitions. [2022-07-22 18:19:04,386 INFO L78 Accepts]: Start accepts. Automaton has 7908 states and 11055 transitions. Word has length 69 [2022-07-22 18:19:04,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:04,387 INFO L495 AbstractCegarLoop]: Abstraction has 7908 states and 11055 transitions. [2022-07-22 18:19:04,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:04,387 INFO L276 IsEmpty]: Start isEmpty. Operand 7908 states and 11055 transitions. [2022-07-22 18:19:04,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 18:19:04,389 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:04,389 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] [2022-07-22 18:19:04,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 18:19:04,389 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:19:04,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:04,390 INFO L85 PathProgramCache]: Analyzing trace with hash -195732182, now seen corresponding path program 1 times [2022-07-22 18:19:04,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:04,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462196856] [2022-07-22 18:19:04,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:04,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:04,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:04,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:04,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:04,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462196856] [2022-07-22 18:19:04,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462196856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:04,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:04,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:19:04,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787837955] [2022-07-22 18:19:04,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:04,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:19:04,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:04,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:19:04,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:04,429 INFO L87 Difference]: Start difference. First operand 7908 states and 11055 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:07,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:07,335 INFO L93 Difference]: Finished difference Result 21738 states and 30539 transitions. [2022-07-22 18:19:07,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:19:07,336 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-07-22 18:19:07,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:07,357 INFO L225 Difference]: With dead ends: 21738 [2022-07-22 18:19:07,357 INFO L226 Difference]: Without dead ends: 14428 [2022-07-22 18:19:07,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:07,367 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 325 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:07,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 828 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:19:07,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14428 states. [2022-07-22 18:19:10,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14428 to 13402. [2022-07-22 18:19:10,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13402 states, 13401 states have (on average 1.3883292291620029) internal successors, (18605), 13401 states have internal predecessors, (18605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:10,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13402 states to 13402 states and 18605 transitions. [2022-07-22 18:19:10,089 INFO L78 Accepts]: Start accepts. Automaton has 13402 states and 18605 transitions. Word has length 72 [2022-07-22 18:19:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:10,090 INFO L495 AbstractCegarLoop]: Abstraction has 13402 states and 18605 transitions. [2022-07-22 18:19:10,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:10,090 INFO L276 IsEmpty]: Start isEmpty. Operand 13402 states and 18605 transitions. [2022-07-22 18:19:10,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-22 18:19:10,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:10,104 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] [2022-07-22 18:19:10,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 18:19:10,104 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:19:10,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:10,105 INFO L85 PathProgramCache]: Analyzing trace with hash 950824169, now seen corresponding path program 1 times [2022-07-22 18:19:10,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:10,105 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434116755] [2022-07-22 18:19:10,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:10,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:10,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:10,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:10,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434116755] [2022-07-22 18:19:10,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434116755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:10,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:10,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:19:10,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590413556] [2022-07-22 18:19:10,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:10,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:19:10,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:10,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:19:10,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:19:10,167 INFO L87 Difference]: Start difference. First operand 13402 states and 18605 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:16,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:16,498 INFO L93 Difference]: Finished difference Result 28279 states and 38743 transitions. [2022-07-22 18:19:16,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 18:19:16,498 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-07-22 18:19:16,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:16,532 INFO L225 Difference]: With dead ends: 28279 [2022-07-22 18:19:16,532 INFO L226 Difference]: Without dead ends: 28277 [2022-07-22 18:19:16,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:19:16,538 INFO L413 NwaCegarLoop]: 572 mSDtfsCounter, 628 mSDsluCounter, 1746 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 2318 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:16,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [628 Valid, 2318 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:19:16,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28277 states. [2022-07-22 18:19:19,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28277 to 14506. [2022-07-22 18:19:19,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14506 states, 14505 states have (on average 1.358772836952775) internal successors, (19709), 14505 states have internal predecessors, (19709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:19,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14506 states to 14506 states and 19709 transitions. [2022-07-22 18:19:19,928 INFO L78 Accepts]: Start accepts. Automaton has 14506 states and 19709 transitions. Word has length 72 [2022-07-22 18:19:19,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:19,928 INFO L495 AbstractCegarLoop]: Abstraction has 14506 states and 19709 transitions. [2022-07-22 18:19:19,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:19,928 INFO L276 IsEmpty]: Start isEmpty. Operand 14506 states and 19709 transitions. [2022-07-22 18:19:19,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-22 18:19:19,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:19,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:19,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 18:19:19,930 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:19:19,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:19,931 INFO L85 PathProgramCache]: Analyzing trace with hash -467379378, now seen corresponding path program 1 times [2022-07-22 18:19:19,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:19,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318297397] [2022-07-22 18:19:19,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:19,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:19,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:19,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:19,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318297397] [2022-07-22 18:19:19,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318297397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:19,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:19,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 18:19:19,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078200356] [2022-07-22 18:19:19,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:19,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 18:19:19,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:19,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 18:19:19,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:19,960 INFO L87 Difference]: Start difference. First operand 14506 states and 19709 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:25,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:25,820 INFO L93 Difference]: Finished difference Result 39233 states and 53330 transitions. [2022-07-22 18:19:25,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 18:19:25,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-07-22 18:19:25,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:25,864 INFO L225 Difference]: With dead ends: 39233 [2022-07-22 18:19:25,864 INFO L226 Difference]: Without dead ends: 25327 [2022-07-22 18:19:25,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 18:19:25,883 INFO L413 NwaCegarLoop]: 535 mSDtfsCounter, 294 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:25,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 814 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:19:25,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25327 states. [2022-07-22 18:19:32,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25327 to 25325. [2022-07-22 18:19:32,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25325 states, 25324 states have (on average 1.3397567524877587) internal successors, (33928), 25324 states have internal predecessors, (33928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:32,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25325 states to 25325 states and 33928 transitions. [2022-07-22 18:19:32,079 INFO L78 Accepts]: Start accepts. Automaton has 25325 states and 33928 transitions. Word has length 73 [2022-07-22 18:19:32,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:32,079 INFO L495 AbstractCegarLoop]: Abstraction has 25325 states and 33928 transitions. [2022-07-22 18:19:32,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:32,079 INFO L276 IsEmpty]: Start isEmpty. Operand 25325 states and 33928 transitions. [2022-07-22 18:19:32,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 18:19:32,081 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:32,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:32,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 18:19:32,082 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:19:32,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:32,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1772479294, now seen corresponding path program 1 times [2022-07-22 18:19:32,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:32,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306557566] [2022-07-22 18:19:32,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:32,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:32,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:32,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:32,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306557566] [2022-07-22 18:19:32,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306557566] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:32,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:32,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:19:32,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132395352] [2022-07-22 18:19:32,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:32,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:19:32,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:32,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:19:32,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:19:32,145 INFO L87 Difference]: Start difference. First operand 25325 states and 33928 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:40,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:40,865 INFO L93 Difference]: Finished difference Result 43377 states and 58312 transitions. [2022-07-22 18:19:40,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:19:40,865 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2022-07-22 18:19:40,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:40,926 INFO L225 Difference]: With dead ends: 43377 [2022-07-22 18:19:40,926 INFO L226 Difference]: Without dead ends: 35983 [2022-07-22 18:19:40,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:19:40,950 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 1008 mSDsluCounter, 813 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1408 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:40,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1408 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:19:40,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35983 states. [2022-07-22 18:19:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35983 to 31337. [2022-07-22 18:19:48,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31337 states, 31336 states have (on average 1.3353331631350522) internal successors, (41844), 31336 states have internal predecessors, (41844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:48,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31337 states to 31337 states and 41844 transitions. [2022-07-22 18:19:48,862 INFO L78 Accepts]: Start accepts. Automaton has 31337 states and 41844 transitions. Word has length 77 [2022-07-22 18:19:48,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:19:48,863 INFO L495 AbstractCegarLoop]: Abstraction has 31337 states and 41844 transitions. [2022-07-22 18:19:48,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:48,863 INFO L276 IsEmpty]: Start isEmpty. Operand 31337 states and 41844 transitions. [2022-07-22 18:19:48,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 18:19:48,865 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:19:48,865 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:19:48,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-22 18:19:48,866 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:19:48,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:19:48,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1856799535, now seen corresponding path program 1 times [2022-07-22 18:19:48,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:19:48,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343002077] [2022-07-22 18:19:48,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:19:48,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:19:48,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:19:48,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:19:48,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:19:48,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343002077] [2022-07-22 18:19:48,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343002077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:19:48,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:19:48,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:19:48,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360065316] [2022-07-22 18:19:48,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:19:48,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:19:48,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:19:48,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:19:48,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:19:48,956 INFO L87 Difference]: Start difference. First operand 31337 states and 41844 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:19:58,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:19:58,683 INFO L93 Difference]: Finished difference Result 47113 states and 63152 transitions. [2022-07-22 18:19:58,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:19:58,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-07-22 18:19:58,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:19:58,762 INFO L225 Difference]: With dead ends: 47113 [2022-07-22 18:19:58,762 INFO L226 Difference]: Without dead ends: 39719 [2022-07-22 18:19:58,782 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:19:58,783 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 985 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 1481 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 18:19:58,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [985 Valid, 1481 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 18:19:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39719 states. [2022-07-22 18:20:09,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39719 to 37345. [2022-07-22 18:20:09,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37345 states, 37344 states have (on average 1.3323693230505569) internal successors, (49756), 37344 states have internal predecessors, (49756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:20:09,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37345 states to 37345 states and 49756 transitions. [2022-07-22 18:20:09,100 INFO L78 Accepts]: Start accepts. Automaton has 37345 states and 49756 transitions. Word has length 78 [2022-07-22 18:20:09,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:20:09,100 INFO L495 AbstractCegarLoop]: Abstraction has 37345 states and 49756 transitions. [2022-07-22 18:20:09,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:20:09,101 INFO L276 IsEmpty]: Start isEmpty. Operand 37345 states and 49756 transitions. [2022-07-22 18:20:09,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-22 18:20:09,103 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:20:09,103 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 18:20:09,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-22 18:20:09,103 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:20:09,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:20:09,104 INFO L85 PathProgramCache]: Analyzing trace with hash 2010164398, now seen corresponding path program 1 times [2022-07-22 18:20:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:20:09,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473105945] [2022-07-22 18:20:09,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:20:09,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:20:09,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:20:09,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:20:09,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:20:09,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473105945] [2022-07-22 18:20:09,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473105945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:20:09,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:20:09,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 18:20:09,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963658272] [2022-07-22 18:20:09,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:20:09,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 18:20:09,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:20:09,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 18:20:09,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-22 18:20:09,146 INFO L87 Difference]: Start difference. First operand 37345 states and 49756 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:20:20,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:20:20,736 INFO L93 Difference]: Finished difference Result 55337 states and 74016 transitions. [2022-07-22 18:20:20,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 18:20:20,748 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-07-22 18:20:20,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:20:20,828 INFO L225 Difference]: With dead ends: 55337 [2022-07-22 18:20:20,829 INFO L226 Difference]: Without dead ends: 46247 [2022-07-22 18:20:20,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-22 18:20:20,850 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 1129 mSDsluCounter, 650 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:20:20,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 1245 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:20:20,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46247 states. [2022-07-22 18:20:32,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46247 to 43873. [2022-07-22 18:20:32,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43873 states, 43872 states have (on average 1.3288657913931436) internal successors, (58300), 43872 states have internal predecessors, (58300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:20:32,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43873 states to 43873 states and 58300 transitions. [2022-07-22 18:20:32,584 INFO L78 Accepts]: Start accepts. Automaton has 43873 states and 58300 transitions. Word has length 78 [2022-07-22 18:20:32,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 18:20:32,585 INFO L495 AbstractCegarLoop]: Abstraction has 43873 states and 58300 transitions. [2022-07-22 18:20:32,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:20:32,585 INFO L276 IsEmpty]: Start isEmpty. Operand 43873 states and 58300 transitions. [2022-07-22 18:20:32,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-22 18:20:32,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 18:20:32,589 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, 1, 1, 1, 1, 1, 1] [2022-07-22 18:20:32,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 18:20:32,590 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2022-07-22 18:20:32,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 18:20:32,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1003850221, now seen corresponding path program 1 times [2022-07-22 18:20:32,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 18:20:32,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181287554] [2022-07-22 18:20:32,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 18:20:32,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 18:20:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 18:20:32,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 18:20:32,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 18:20:32,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181287554] [2022-07-22 18:20:32,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181287554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 18:20:32,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 18:20:32,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 18:20:32,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820735851] [2022-07-22 18:20:32,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 18:20:32,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 18:20:32,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 18:20:32,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 18:20:32,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-22 18:20:32,893 INFO L87 Difference]: Start difference. First operand 43873 states and 58300 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-22 18:20:46,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 18:20:46,969 INFO L93 Difference]: Finished difference Result 67495 states and 89935 transitions. [2022-07-22 18:20:46,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 18:20:46,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2022-07-22 18:20:46,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 18:20:47,072 INFO L225 Difference]: With dead ends: 67495 [2022-07-22 18:20:47,072 INFO L226 Difference]: Without dead ends: 54093 [2022-07-22 18:20:47,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-07-22 18:20:47,099 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 1209 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1209 SdHoareTripleChecker+Valid, 1607 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 18:20:47,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1209 Valid, 1607 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 18:20:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54093 states.