./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 755ab1a46ae9bd419f57fa80d8e9c25878a5804529700435e5fe8941ed66455d --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:16:34,338 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:16:34,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:16:34,390 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:16:34,390 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:16:34,391 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:16:34,392 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:16:34,393 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:16:34,394 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:16:34,394 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:16:34,395 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:16:34,396 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:16:34,396 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:16:34,396 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:16:34,397 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:16:34,398 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:16:34,399 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:16:34,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:16:34,400 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:16:34,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:16:34,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:16:34,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:16:34,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:16:34,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:16:34,406 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:16:34,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:16:34,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:16:34,407 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:16:34,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:16:34,408 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:16:34,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:16:34,409 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:16:34,410 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:16:34,410 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:16:34,411 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:16:34,411 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:16:34,411 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:16:34,411 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:16:34,412 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:16:34,412 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:16:34,413 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:16:34,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:16:34,431 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:16:34,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:16:34,432 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:16:34,432 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:16:34,433 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:16:34,433 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:16:34,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:16:34,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:16:34,433 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:16:34,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:16:34,434 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:16:34,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:16:34,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:16:34,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:16:34,435 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:16:34,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:16:34,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:16:34,435 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:16:34,435 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:16:34,435 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:16:34,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:16:34,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:16:34,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:16:34,436 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:16:34,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:16:34,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:16:34,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:16:34,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:16:34,437 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:16:34,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:16:34,437 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:16:34,437 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:16:34,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:16:34,437 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:16:34,438 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 755ab1a46ae9bd419f57fa80d8e9c25878a5804529700435e5fe8941ed66455d [2021-12-17 16:16:34,628 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:16:34,643 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:16:34,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:16:34,646 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:16:34,646 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:16:34,647 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-12-17 16:16:34,697 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56066e0e4/ffefa357eff2429bb82e615510fc54bc/FLAG610918d92 [2021-12-17 16:16:35,294 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:16:35,295 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-12-17 16:16:35,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56066e0e4/ffefa357eff2429bb82e615510fc54bc/FLAG610918d92 [2021-12-17 16:16:35,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56066e0e4/ffefa357eff2429bb82e615510fc54bc [2021-12-17 16:16:35,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:16:35,723 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:16:35,724 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:16:35,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:16:35,726 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:16:35,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:16:35" (1/1) ... [2021-12-17 16:16:35,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4ce936 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:16:35, skipping insertion in model container [2021-12-17 16:16:35,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:16:35" (1/1) ... [2021-12-17 16:16:35,732 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:16:35,837 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:16:36,150 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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2021-12-17 16:16:36,190 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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2021-12-17 16:16:36,198 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2021-12-17 16:16:36,212 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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2021-12-17 16:16:36,230 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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2021-12-17 16:16:36,245 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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2021-12-17 16:16:36,579 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:16:36,587 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:16:36,635 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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2021-12-17 16:16:36,664 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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2021-12-17 16:16:36,667 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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2021-12-17 16:16:36,671 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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2021-12-17 16:16:36,677 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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2021-12-17 16:16:36,687 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.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2021-12-17 16:16:36,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:16:36,941 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:16:36,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:16:36 WrapperNode [2021-12-17 16:16:36,942 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:16:36,943 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:16:36,943 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:16:36,943 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:16:36,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:16:36" (1/1) ... [2021-12-17 16:16:36,988 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:16:36" (1/1) ... [2021-12-17 16:16:37,105 INFO L137 Inliner]: procedures = 24, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 9273 [2021-12-17 16:16:37,105 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:16:37,106 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:16:37,106 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:16:37,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:16:37,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:16:36" (1/1) ... [2021-12-17 16:16:37,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:16:36" (1/1) ... [2021-12-17 16:16:37,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:16:36" (1/1) ... [2021-12-17 16:16:37,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:16:36" (1/1) ... [2021-12-17 16:16:37,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:16:36" (1/1) ... [2021-12-17 16:16:37,223 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:16:36" (1/1) ... [2021-12-17 16:16:37,242 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:16:36" (1/1) ... [2021-12-17 16:16:37,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:16:37,267 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:16:37,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:16:37,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:16:37,268 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:16:36" (1/1) ... [2021-12-17 16:16:37,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:16:37,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:16:37,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 16:16:37,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 16:16:37,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:16:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:16:37,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:16:37,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:16:37,696 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:16:37,698 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:16:39,960 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:16:39,984 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:16:39,984 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 16:16:39,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:16:39 BoogieIcfgContainer [2021-12-17 16:16:39,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:16:39,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:16:39,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:16:39,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:16:39,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:16:35" (1/3) ... [2021-12-17 16:16:39,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5767eec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:16:39, skipping insertion in model container [2021-12-17 16:16:39,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:16:36" (2/3) ... [2021-12-17 16:16:39,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5767eec3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:16:39, skipping insertion in model container [2021-12-17 16:16:39,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:16:39" (3/3) ... [2021-12-17 16:16:39,997 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2021-12-17 16:16:40,003 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:16:40,003 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-17 16:16:40,043 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:16:40,047 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 16:16:40,048 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-17 16:16:40,092 INFO L276 IsEmpty]: Start isEmpty. Operand has 1759 states, 1752 states have (on average 1.7973744292237444) internal successors, (3149), 1758 states have internal predecessors, (3149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:40,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-17 16:16:40,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:16:40,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:16:40,113 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:16:40,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:16:40,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1255419244, now seen corresponding path program 1 times [2021-12-17 16:16:40,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:16:40,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1699284101] [2021-12-17 16:16:40,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:16:40,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:16:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:16:40,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:16:40,457 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:16:40,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1699284101] [2021-12-17 16:16:40,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1699284101] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:16:40,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:16:40,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:16:40,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076848026] [2021-12-17 16:16:40,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:16:40,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:16:40,463 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:16:40,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:16:40,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:16:40,485 INFO L87 Difference]: Start difference. First operand has 1759 states, 1752 states have (on average 1.7973744292237444) internal successors, (3149), 1758 states have internal predecessors, (3149), 0 states have call successors, (0), 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 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:40,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:16:40,780 INFO L93 Difference]: Finished difference Result 2534 states and 4443 transitions. [2021-12-17 16:16:40,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:16:40,782 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-12-17 16:16:40,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:16:40,797 INFO L225 Difference]: With dead ends: 2534 [2021-12-17 16:16:40,797 INFO L226 Difference]: Without dead ends: 2330 [2021-12-17 16:16:40,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:16:40,804 INFO L933 BasicCegarLoop]: 3632 mSDtfsCounter, 1885 mSDsluCounter, 2017 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1885 SdHoareTripleChecker+Valid, 5649 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:16:40,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1885 Valid, 5649 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:16:40,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2330 states. [2021-12-17 16:16:40,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2330 to 2320. [2021-12-17 16:16:40,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2320 states, 2314 states have (on average 1.3029386343993086) internal successors, (3015), 2319 states have internal predecessors, (3015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:40,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 3015 transitions. [2021-12-17 16:16:40,924 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 3015 transitions. Word has length 76 [2021-12-17 16:16:40,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:16:40,925 INFO L470 AbstractCegarLoop]: Abstraction has 2320 states and 3015 transitions. [2021-12-17 16:16:40,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:40,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 3015 transitions. [2021-12-17 16:16:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-17 16:16:40,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:16:40,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:16:40,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 16:16:40,935 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:16:40,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:16:40,938 INFO L85 PathProgramCache]: Analyzing trace with hash 1568234670, now seen corresponding path program 1 times [2021-12-17 16:16:40,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:16:40,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130034924] [2021-12-17 16:16:40,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:16:40,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:16:40,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:16:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:16:41,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:16:41,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130034924] [2021-12-17 16:16:41,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130034924] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:16:41,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:16:41,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:16:41,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65746095] [2021-12-17 16:16:41,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:16:41,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:16:41,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:16:41,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:16:41,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:16:41,113 INFO L87 Difference]: Start difference. First operand 2320 states and 3015 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:41,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:16:41,215 INFO L93 Difference]: Finished difference Result 3253 states and 4380 transitions. [2021-12-17 16:16:41,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:16:41,216 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-12-17 16:16:41,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:16:41,224 INFO L225 Difference]: With dead ends: 3253 [2021-12-17 16:16:41,224 INFO L226 Difference]: Without dead ends: 2780 [2021-12-17 16:16:41,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:16:41,228 INFO L933 BasicCegarLoop]: 2353 mSDtfsCounter, 1185 mSDsluCounter, 1430 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1185 SdHoareTripleChecker+Valid, 3783 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:16:41,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1185 Valid, 3783 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:16:41,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2780 states. [2021-12-17 16:16:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2780 to 2770. [2021-12-17 16:16:41,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2770 states, 2764 states have (on average 1.327424023154848) internal successors, (3669), 2769 states have internal predecessors, (3669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:41,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2770 states to 2770 states and 3669 transitions. [2021-12-17 16:16:41,290 INFO L78 Accepts]: Start accepts. Automaton has 2770 states and 3669 transitions. Word has length 76 [2021-12-17 16:16:41,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:16:41,292 INFO L470 AbstractCegarLoop]: Abstraction has 2770 states and 3669 transitions. [2021-12-17 16:16:41,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 2770 states and 3669 transitions. [2021-12-17 16:16:41,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-17 16:16:41,298 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:16:41,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:16:41,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 16:16:41,303 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:16:41,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:16:41,303 INFO L85 PathProgramCache]: Analyzing trace with hash -801382376, now seen corresponding path program 1 times [2021-12-17 16:16:41,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:16:41,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1596217181] [2021-12-17 16:16:41,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:16:41,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:16:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:16:41,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:16:41,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:16:41,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1596217181] [2021-12-17 16:16:41,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1596217181] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:16:41,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:16:41,411 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:16:41,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133363142] [2021-12-17 16:16:41,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:16:41,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:16:41,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:16:41,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:16:41,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:16:41,415 INFO L87 Difference]: Start difference. First operand 2770 states and 3669 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:16:42,136 INFO L93 Difference]: Finished difference Result 5085 states and 6944 transitions. [2021-12-17 16:16:42,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:16:42,137 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-12-17 16:16:42,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:16:42,146 INFO L225 Difference]: With dead ends: 5085 [2021-12-17 16:16:42,146 INFO L226 Difference]: Without dead ends: 2918 [2021-12-17 16:16:42,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:16:42,152 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 5827 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 876 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5827 SdHoareTripleChecker+Valid, 1220 SdHoareTripleChecker+Invalid, 894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:16:42,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5827 Valid, 1220 Invalid, 894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 876 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:16:42,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2918 states. [2021-12-17 16:16:42,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2918 to 2908. [2021-12-17 16:16:42,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2908 states, 2902 states have (on average 1.378015161957271) internal successors, (3999), 2907 states have internal predecessors, (3999), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:42,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2908 states to 2908 states and 3999 transitions. [2021-12-17 16:16:42,277 INFO L78 Accepts]: Start accepts. Automaton has 2908 states and 3999 transitions. Word has length 76 [2021-12-17 16:16:42,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:16:42,277 INFO L470 AbstractCegarLoop]: Abstraction has 2908 states and 3999 transitions. [2021-12-17 16:16:42,277 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:42,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2908 states and 3999 transitions. [2021-12-17 16:16:42,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-17 16:16:42,282 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:16:42,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:16:42,282 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 16:16:42,282 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:16:42,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:16:42,283 INFO L85 PathProgramCache]: Analyzing trace with hash -845990985, now seen corresponding path program 1 times [2021-12-17 16:16:42,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:16:42,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670072782] [2021-12-17 16:16:42,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:16:42,283 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:16:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:16:42,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:16:42,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:16:42,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670072782] [2021-12-17 16:16:42,344 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670072782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:16:42,344 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:16:42,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:16:42,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212854267] [2021-12-17 16:16:42,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:16:42,345 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:16:42,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:16:42,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:16:42,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:16:42,346 INFO L87 Difference]: Start difference. First operand 2908 states and 3999 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:42,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:16:42,995 INFO L93 Difference]: Finished difference Result 5483 states and 7696 transitions. [2021-12-17 16:16:42,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:16:42,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-17 16:16:42,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:16:43,007 INFO L225 Difference]: With dead ends: 5483 [2021-12-17 16:16:43,007 INFO L226 Difference]: Without dead ends: 3234 [2021-12-17 16:16:43,012 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:16:43,016 INFO L933 BasicCegarLoop]: 828 mSDtfsCounter, 4846 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4846 SdHoareTripleChecker+Valid, 1025 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:16:43,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4846 Valid, 1025 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:16:43,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3234 states. [2021-12-17 16:16:43,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3234 to 3220. [2021-12-17 16:16:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3220 states, 3214 states have (on average 1.3942128189172371) internal successors, (4481), 3219 states have internal predecessors, (4481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:43,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3220 states to 3220 states and 4481 transitions. [2021-12-17 16:16:43,151 INFO L78 Accepts]: Start accepts. Automaton has 3220 states and 4481 transitions. Word has length 77 [2021-12-17 16:16:43,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:16:43,152 INFO L470 AbstractCegarLoop]: Abstraction has 3220 states and 4481 transitions. [2021-12-17 16:16:43,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:43,152 INFO L276 IsEmpty]: Start isEmpty. Operand 3220 states and 4481 transitions. [2021-12-17 16:16:43,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-17 16:16:43,156 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:16:43,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:16:43,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 16:16:43,157 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:16:43,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:16:43,157 INFO L85 PathProgramCache]: Analyzing trace with hash -2068935462, now seen corresponding path program 1 times [2021-12-17 16:16:43,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:16:43,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963298337] [2021-12-17 16:16:43,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:16:43,158 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:16:43,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:16:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:16:43,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:16:43,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963298337] [2021-12-17 16:16:43,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963298337] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:16:43,222 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:16:43,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:16:43,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991297942] [2021-12-17 16:16:43,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:16:43,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:16:43,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:16:43,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:16:43,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:16:43,224 INFO L87 Difference]: Start difference. First operand 3220 states and 4481 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:43,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:16:43,859 INFO L93 Difference]: Finished difference Result 7405 states and 10534 transitions. [2021-12-17 16:16:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:16:43,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-17 16:16:43,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:16:43,873 INFO L225 Difference]: With dead ends: 7405 [2021-12-17 16:16:43,873 INFO L226 Difference]: Without dead ends: 4548 [2021-12-17 16:16:43,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:16:43,879 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 4108 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4108 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:16:43,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4108 Valid, 902 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:16:43,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4548 states. [2021-12-17 16:16:44,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4548 to 4538. [2021-12-17 16:16:44,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4538 states, 4532 states have (on average 1.424757281553398) internal successors, (6457), 4537 states have internal predecessors, (6457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:44,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4538 states to 4538 states and 6457 transitions. [2021-12-17 16:16:44,029 INFO L78 Accepts]: Start accepts. Automaton has 4538 states and 6457 transitions. Word has length 77 [2021-12-17 16:16:44,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:16:44,030 INFO L470 AbstractCegarLoop]: Abstraction has 4538 states and 6457 transitions. [2021-12-17 16:16:44,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:44,030 INFO L276 IsEmpty]: Start isEmpty. Operand 4538 states and 6457 transitions. [2021-12-17 16:16:44,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-17 16:16:44,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:16:44,035 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:16:44,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 16:16:44,036 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:16:44,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:16:44,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1925332193, now seen corresponding path program 1 times [2021-12-17 16:16:44,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:16:44,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126981028] [2021-12-17 16:16:44,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:16:44,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:16:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:16:44,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:16:44,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:16:44,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126981028] [2021-12-17 16:16:44,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126981028] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:16:44,082 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:16:44,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:16:44,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913054400] [2021-12-17 16:16:44,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:16:44,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:16:44,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:16:44,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:16:44,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:16:44,083 INFO L87 Difference]: Start difference. First operand 4538 states and 6457 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:44,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:16:44,271 INFO L93 Difference]: Finished difference Result 9533 states and 13702 transitions. [2021-12-17 16:16:44,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:16:44,272 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-17 16:16:44,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:16:44,290 INFO L225 Difference]: With dead ends: 9533 [2021-12-17 16:16:44,291 INFO L226 Difference]: Without dead ends: 6382 [2021-12-17 16:16:44,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:16:44,297 INFO L933 BasicCegarLoop]: 1505 mSDtfsCounter, 919 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 919 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:16:44,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [919 Valid, 2363 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:16:44,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6382 states. [2021-12-17 16:16:44,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6382 to 6360. [2021-12-17 16:16:44,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6360 states, 6354 states have (on average 1.4121813031161472) internal successors, (8973), 6359 states have internal predecessors, (8973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:44,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6360 states to 6360 states and 8973 transitions. [2021-12-17 16:16:44,476 INFO L78 Accepts]: Start accepts. Automaton has 6360 states and 8973 transitions. Word has length 78 [2021-12-17 16:16:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:16:44,477 INFO L470 AbstractCegarLoop]: Abstraction has 6360 states and 8973 transitions. [2021-12-17 16:16:44,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:44,477 INFO L276 IsEmpty]: Start isEmpty. Operand 6360 states and 8973 transitions. [2021-12-17 16:16:44,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-17 16:16:44,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:16:44,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:16:44,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 16:16:44,484 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:16:44,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:16:44,484 INFO L85 PathProgramCache]: Analyzing trace with hash -525215666, now seen corresponding path program 1 times [2021-12-17 16:16:44,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:16:44,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869542714] [2021-12-17 16:16:44,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:16:44,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:16:44,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:16:44,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:16:44,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:16:44,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869542714] [2021-12-17 16:16:44,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869542714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:16:44,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:16:44,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:16:44,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920076375] [2021-12-17 16:16:44,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:16:44,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:16:44,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:16:44,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:16:44,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:16:44,529 INFO L87 Difference]: Start difference. First operand 6360 states and 8973 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:44,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:16:44,769 INFO L93 Difference]: Finished difference Result 13352 states and 19004 transitions. [2021-12-17 16:16:44,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:16:44,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-17 16:16:44,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:16:44,796 INFO L225 Difference]: With dead ends: 13352 [2021-12-17 16:16:44,796 INFO L226 Difference]: Without dead ends: 8882 [2021-12-17 16:16:44,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:16:44,803 INFO L933 BasicCegarLoop]: 1522 mSDtfsCounter, 938 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 938 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:16:44,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [938 Valid, 2375 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:16:44,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8882 states. [2021-12-17 16:16:45,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8882 to 8854. [2021-12-17 16:16:45,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8854 states, 8848 states have (on average 1.398621157323689) internal successors, (12375), 8853 states have internal predecessors, (12375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:45,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8854 states to 8854 states and 12375 transitions. [2021-12-17 16:16:45,043 INFO L78 Accepts]: Start accepts. Automaton has 8854 states and 12375 transitions. Word has length 78 [2021-12-17 16:16:45,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:16:45,043 INFO L470 AbstractCegarLoop]: Abstraction has 8854 states and 12375 transitions. [2021-12-17 16:16:45,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:45,044 INFO L276 IsEmpty]: Start isEmpty. Operand 8854 states and 12375 transitions. [2021-12-17 16:16:45,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-17 16:16:45,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:16:45,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:16:45,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 16:16:45,052 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:16:45,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:16:45,053 INFO L85 PathProgramCache]: Analyzing trace with hash -643699700, now seen corresponding path program 1 times [2021-12-17 16:16:45,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:16:45,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769909235] [2021-12-17 16:16:45,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:16:45,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:16:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:16:45,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:16:45,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:16:45,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769909235] [2021-12-17 16:16:45,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769909235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:16:45,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:16:45,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:16:45,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340925470] [2021-12-17 16:16:45,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:16:45,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:16:45,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:16:45,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:16:45,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:16:45,094 INFO L87 Difference]: Start difference. First operand 8854 states and 12375 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:45,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:16:45,402 INFO L93 Difference]: Finished difference Result 21801 states and 30896 transitions. [2021-12-17 16:16:45,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:16:45,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-17 16:16:45,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:16:45,433 INFO L225 Difference]: With dead ends: 21801 [2021-12-17 16:16:45,433 INFO L226 Difference]: Without dead ends: 14372 [2021-12-17 16:16:45,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:16:45,446 INFO L933 BasicCegarLoop]: 1215 mSDtfsCounter, 630 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 630 SdHoareTripleChecker+Valid, 2079 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:16:45,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [630 Valid, 2079 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:16:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14372 states. [2021-12-17 16:16:45,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14372 to 14362. [2021-12-17 16:16:45,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14362 states, 14356 states have (on average 1.401434940094734) internal successors, (20119), 14361 states have internal predecessors, (20119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:45,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14362 states to 14362 states and 20119 transitions. [2021-12-17 16:16:45,963 INFO L78 Accepts]: Start accepts. Automaton has 14362 states and 20119 transitions. Word has length 78 [2021-12-17 16:16:45,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:16:45,963 INFO L470 AbstractCegarLoop]: Abstraction has 14362 states and 20119 transitions. [2021-12-17 16:16:45,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:45,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14362 states and 20119 transitions. [2021-12-17 16:16:45,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 16:16:45,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:16:45,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:16:45,976 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 16:16:45,976 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:16:45,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:16:45,976 INFO L85 PathProgramCache]: Analyzing trace with hash -453781336, now seen corresponding path program 1 times [2021-12-17 16:16:45,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:16:45,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352143213] [2021-12-17 16:16:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:16:45,977 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:16:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:16:46,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:16:46,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:16:46,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352143213] [2021-12-17 16:16:46,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352143213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:16:46,051 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:16:46,051 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:16:46,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555774629] [2021-12-17 16:16:46,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:16:46,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:16:46,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:16:46,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:16:46,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:16:46,053 INFO L87 Difference]: Start difference. First operand 14362 states and 20119 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:48,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:16:48,072 INFO L93 Difference]: Finished difference Result 51429 states and 73326 transitions. [2021-12-17 16:16:48,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:16:48,073 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-12-17 16:16:48,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:16:48,174 INFO L225 Difference]: With dead ends: 51429 [2021-12-17 16:16:48,174 INFO L226 Difference]: Without dead ends: 46973 [2021-12-17 16:16:48,192 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:16:48,194 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 7486 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 1274 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7486 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 1596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:16:48,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7486 Valid, 1794 Invalid, 1596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1274 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:16:48,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46973 states. [2021-12-17 16:16:48,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46973 to 14410. [2021-12-17 16:16:49,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14410 states, 14404 states have (on average 1.4012079977783949) internal successors, (20183), 14409 states have internal predecessors, (20183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:49,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14410 states to 14410 states and 20183 transitions. [2021-12-17 16:16:49,031 INFO L78 Accepts]: Start accepts. Automaton has 14410 states and 20183 transitions. Word has length 79 [2021-12-17 16:16:49,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:16:49,031 INFO L470 AbstractCegarLoop]: Abstraction has 14410 states and 20183 transitions. [2021-12-17 16:16:49,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:49,032 INFO L276 IsEmpty]: Start isEmpty. Operand 14410 states and 20183 transitions. [2021-12-17 16:16:49,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 16:16:49,043 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:16:49,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:16:49,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 16:16:49,044 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:16:49,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:16:49,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1721136855, now seen corresponding path program 1 times [2021-12-17 16:16:49,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:16:49,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1619680518] [2021-12-17 16:16:49,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:16:49,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:16:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:16:49,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:16:49,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:16:49,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1619680518] [2021-12-17 16:16:49,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1619680518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:16:49,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:16:49,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:16:49,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859073953] [2021-12-17 16:16:49,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:16:49,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:16:49,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:16:49,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:16:49,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:16:49,141 INFO L87 Difference]: Start difference. First operand 14410 states and 20183 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:52,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:16:52,101 INFO L93 Difference]: Finished difference Result 59938 states and 85446 transitions. [2021-12-17 16:16:52,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:16:52,102 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-12-17 16:16:52,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:16:52,214 INFO L225 Difference]: With dead ends: 59938 [2021-12-17 16:16:52,214 INFO L226 Difference]: Without dead ends: 54166 [2021-12-17 16:16:52,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:16:52,238 INFO L933 BasicCegarLoop]: 712 mSDtfsCounter, 6904 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6904 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 1622 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:16:52,238 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6904 Valid, 1771 Invalid, 1622 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:16:52,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54166 states. [2021-12-17 16:16:53,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54166 to 14590. [2021-12-17 16:16:53,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14590 states, 14584 states have (on average 1.4003702687877126) internal successors, (20423), 14589 states have internal predecessors, (20423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:53,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14590 states to 14590 states and 20423 transitions. [2021-12-17 16:16:53,255 INFO L78 Accepts]: Start accepts. Automaton has 14590 states and 20423 transitions. Word has length 79 [2021-12-17 16:16:53,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:16:53,255 INFO L470 AbstractCegarLoop]: Abstraction has 14590 states and 20423 transitions. [2021-12-17 16:16:53,255 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:53,255 INFO L276 IsEmpty]: Start isEmpty. Operand 14590 states and 20423 transitions. [2021-12-17 16:16:53,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 16:16:53,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:16:53,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:16:53,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 16:16:53,271 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:16:53,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:16:53,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1949723738, now seen corresponding path program 1 times [2021-12-17 16:16:53,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:16:53,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818819204] [2021-12-17 16:16:53,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:16:53,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:16:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:16:53,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:16:53,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:16:53,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818819204] [2021-12-17 16:16:53,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818819204] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:16:53,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:16:53,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:16:53,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980802662] [2021-12-17 16:16:53,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:16:53,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:16:53,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:16:53,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:16:53,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:16:53,368 INFO L87 Difference]: Start difference. First operand 14590 states and 20423 transitions. Second operand has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:56,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:16:56,929 INFO L93 Difference]: Finished difference Result 54630 states and 77730 transitions. [2021-12-17 16:16:56,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:16:56,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-12-17 16:16:56,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:16:57,005 INFO L225 Difference]: With dead ends: 54630 [2021-12-17 16:16:57,005 INFO L226 Difference]: Without dead ends: 49152 [2021-12-17 16:16:57,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:16:57,025 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 6511 mSDsluCounter, 1047 mSDsCounter, 0 mSdLazyCounter, 1328 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6511 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 1665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 1328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:16:57,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6511 Valid, 1747 Invalid, 1665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 1328 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:16:57,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49152 states. [2021-12-17 16:16:57,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49152 to 14890. [2021-12-17 16:16:57,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14890 states, 14884 states have (on average 1.3992878258532653) internal successors, (20827), 14889 states have internal predecessors, (20827), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:58,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14890 states to 14890 states and 20827 transitions. [2021-12-17 16:16:58,002 INFO L78 Accepts]: Start accepts. Automaton has 14890 states and 20827 transitions. Word has length 79 [2021-12-17 16:16:58,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:16:58,003 INFO L470 AbstractCegarLoop]: Abstraction has 14890 states and 20827 transitions. [2021-12-17 16:16:58,003 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.285714285714286) internal successors, (79), 6 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:58,003 INFO L276 IsEmpty]: Start isEmpty. Operand 14890 states and 20827 transitions. [2021-12-17 16:16:58,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-17 16:16:58,015 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:16:58,016 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:16:58,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 16:16:58,016 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:16:58,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:16:58,022 INFO L85 PathProgramCache]: Analyzing trace with hash 583742384, now seen corresponding path program 1 times [2021-12-17 16:16:58,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:16:58,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2800123] [2021-12-17 16:16:58,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:16:58,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:16:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:16:58,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:16:58,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:16:58,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2800123] [2021-12-17 16:16:58,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2800123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:16:58,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:16:58,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:16:58,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835314455] [2021-12-17 16:16:58,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:16:58,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:16:58,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:16:58,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:16:58,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:16:58,107 INFO L87 Difference]: Start difference. First operand 14890 states and 20827 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:16:59,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:16:59,518 INFO L93 Difference]: Finished difference Result 34132 states and 47923 transitions. [2021-12-17 16:16:59,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:16:59,519 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-12-17 16:16:59,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:16:59,551 INFO L225 Difference]: With dead ends: 34132 [2021-12-17 16:16:59,551 INFO L226 Difference]: Without dead ends: 20114 [2021-12-17 16:16:59,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:16:59,574 INFO L933 BasicCegarLoop]: 704 mSDtfsCounter, 4166 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4166 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:16:59,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4166 Valid, 921 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:16:59,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20114 states. [2021-12-17 16:17:00,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20114 to 14890. [2021-12-17 16:17:00,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14890 states, 14884 states have (on average 1.3955925826390756) internal successors, (20772), 14889 states have internal predecessors, (20772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:00,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14890 states to 14890 states and 20772 transitions. [2021-12-17 16:17:00,490 INFO L78 Accepts]: Start accepts. Automaton has 14890 states and 20772 transitions. Word has length 80 [2021-12-17 16:17:00,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:17:00,490 INFO L470 AbstractCegarLoop]: Abstraction has 14890 states and 20772 transitions. [2021-12-17 16:17:00,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:00,490 INFO L276 IsEmpty]: Start isEmpty. Operand 14890 states and 20772 transitions. [2021-12-17 16:17:00,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-17 16:17:00,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:17:00,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:17:00,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 16:17:00,501 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:17:00,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:17:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash -2109644858, now seen corresponding path program 1 times [2021-12-17 16:17:00,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:17:00,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459169884] [2021-12-17 16:17:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:17:00,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:17:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:17:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:17:00,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:17:00,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459169884] [2021-12-17 16:17:00,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459169884] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:17:00,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:17:00,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:17:00,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810668591] [2021-12-17 16:17:00,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:17:00,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 16:17:00,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:17:00,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 16:17:00,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 16:17:00,587 INFO L87 Difference]: Start difference. First operand 14890 states and 20772 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:02,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:17:02,058 INFO L93 Difference]: Finished difference Result 22398 states and 31627 transitions. [2021-12-17 16:17:02,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 16:17:02,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-12-17 16:17:02,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:17:02,093 INFO L225 Difference]: With dead ends: 22398 [2021-12-17 16:17:02,093 INFO L226 Difference]: Without dead ends: 22396 [2021-12-17 16:17:02,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 16:17:02,105 INFO L933 BasicCegarLoop]: 1330 mSDtfsCounter, 150 mSDsluCounter, 2454 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 3784 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:17:02,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 3784 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:17:02,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22396 states. [2021-12-17 16:17:03,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22396 to 14888. [2021-12-17 16:17:03,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14888 states, 14883 states have (on average 1.3932002956393201) internal successors, (20735), 14887 states have internal predecessors, (20735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:03,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14888 states to 14888 states and 20735 transitions. [2021-12-17 16:17:03,202 INFO L78 Accepts]: Start accepts. Automaton has 14888 states and 20735 transitions. Word has length 80 [2021-12-17 16:17:03,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:17:03,202 INFO L470 AbstractCegarLoop]: Abstraction has 14888 states and 20735 transitions. [2021-12-17 16:17:03,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:03,203 INFO L276 IsEmpty]: Start isEmpty. Operand 14888 states and 20735 transitions. [2021-12-17 16:17:03,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-17 16:17:03,213 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:17:03,213 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:17:03,213 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 16:17:03,213 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:17:03,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:17:03,214 INFO L85 PathProgramCache]: Analyzing trace with hash 501951513, now seen corresponding path program 1 times [2021-12-17 16:17:03,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:17:03,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070396224] [2021-12-17 16:17:03,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:17:03,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:17:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:17:03,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:17:03,298 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:17:03,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070396224] [2021-12-17 16:17:03,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070396224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:17:03,298 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:17:03,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:17:03,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132826406] [2021-12-17 16:17:03,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:17:03,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 16:17:03,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:17:03,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 16:17:03,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 16:17:03,300 INFO L87 Difference]: Start difference. First operand 14888 states and 20735 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:04,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:17:04,479 INFO L93 Difference]: Finished difference Result 22396 states and 31590 transitions. [2021-12-17 16:17:04,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 16:17:04,479 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-12-17 16:17:04,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:17:04,510 INFO L225 Difference]: With dead ends: 22396 [2021-12-17 16:17:04,510 INFO L226 Difference]: Without dead ends: 22394 [2021-12-17 16:17:04,519 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 16:17:04,522 INFO L933 BasicCegarLoop]: 1329 mSDtfsCounter, 150 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 3779 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:17:04,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 3779 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:17:04,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22394 states. [2021-12-17 16:17:05,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22394 to 14886. [2021-12-17 16:17:05,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14886 states, 14882 states have (on average 1.3908076871388255) internal successors, (20698), 14885 states have internal predecessors, (20698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14886 states to 14886 states and 20698 transitions. [2021-12-17 16:17:05,388 INFO L78 Accepts]: Start accepts. Automaton has 14886 states and 20698 transitions. Word has length 80 [2021-12-17 16:17:05,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:17:05,388 INFO L470 AbstractCegarLoop]: Abstraction has 14886 states and 20698 transitions. [2021-12-17 16:17:05,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:05,389 INFO L276 IsEmpty]: Start isEmpty. Operand 14886 states and 20698 transitions. [2021-12-17 16:17:05,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-17 16:17:05,397 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:17:05,397 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:17:05,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 16:17:05,398 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:17:05,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:17:05,398 INFO L85 PathProgramCache]: Analyzing trace with hash -327033425, now seen corresponding path program 1 times [2021-12-17 16:17:05,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:17:05,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579851053] [2021-12-17 16:17:05,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:17:05,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:17:05,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:17:05,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:17:05,458 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:17:05,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579851053] [2021-12-17 16:17:05,458 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579851053] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:17:05,458 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:17:05,458 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:17:05,458 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341789284] [2021-12-17 16:17:05,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:17:05,459 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:17:05,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:17:05,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:17:05,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:17:05,460 INFO L87 Difference]: Start difference. First operand 14886 states and 20698 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:07,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:17:07,074 INFO L93 Difference]: Finished difference Result 33334 states and 46324 transitions. [2021-12-17 16:17:07,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:17:07,074 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-12-17 16:17:07,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:17:07,103 INFO L225 Difference]: With dead ends: 33334 [2021-12-17 16:17:07,104 INFO L226 Difference]: Without dead ends: 19253 [2021-12-17 16:17:07,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:17:07,123 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 3591 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 589 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3591 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 589 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:17:07,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3591 Valid, 782 Invalid, 689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 589 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:17:07,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19253 states. [2021-12-17 16:17:08,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19253 to 19193. [2021-12-17 16:17:08,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19193 states, 19189 states have (on average 1.3771952681223618) internal successors, (26427), 19192 states have internal predecessors, (26427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:08,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19193 states to 19193 states and 26427 transitions. [2021-12-17 16:17:08,253 INFO L78 Accepts]: Start accepts. Automaton has 19193 states and 26427 transitions. Word has length 80 [2021-12-17 16:17:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:17:08,254 INFO L470 AbstractCegarLoop]: Abstraction has 19193 states and 26427 transitions. [2021-12-17 16:17:08,254 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:08,254 INFO L276 IsEmpty]: Start isEmpty. Operand 19193 states and 26427 transitions. [2021-12-17 16:17:08,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-17 16:17:08,263 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:17:08,263 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:17:08,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 16:17:08,264 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:17:08,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:17:08,264 INFO L85 PathProgramCache]: Analyzing trace with hash 324015783, now seen corresponding path program 1 times [2021-12-17 16:17:08,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:17:08,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169985286] [2021-12-17 16:17:08,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:17:08,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:17:08,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:17:08,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:17:08,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:17:08,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169985286] [2021-12-17 16:17:08,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169985286] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:17:08,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:17:08,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:17:08,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294927538] [2021-12-17 16:17:08,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:17:08,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:17:08,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:17:08,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:17:08,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:17:08,322 INFO L87 Difference]: Start difference. First operand 19193 states and 26427 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:13,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:17:13,558 INFO L93 Difference]: Finished difference Result 66799 states and 92740 transitions. [2021-12-17 16:17:13,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:17:13,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-12-17 16:17:13,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:17:13,649 INFO L225 Difference]: With dead ends: 66799 [2021-12-17 16:17:13,649 INFO L226 Difference]: Without dead ends: 57415 [2021-12-17 16:17:13,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:17:13,670 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 6149 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 1077 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6149 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 1397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1077 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 16:17:13,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6149 Valid, 1712 Invalid, 1397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1077 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 16:17:13,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57415 states. [2021-12-17 16:17:15,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57415 to 19277. [2021-12-17 16:17:15,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19277 states, 19273 states have (on average 1.3767965547657344) internal successors, (26535), 19276 states have internal predecessors, (26535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:15,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19277 states to 19277 states and 26535 transitions. [2021-12-17 16:17:15,239 INFO L78 Accepts]: Start accepts. Automaton has 19277 states and 26535 transitions. Word has length 81 [2021-12-17 16:17:15,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:17:15,240 INFO L470 AbstractCegarLoop]: Abstraction has 19277 states and 26535 transitions. [2021-12-17 16:17:15,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:15,240 INFO L276 IsEmpty]: Start isEmpty. Operand 19277 states and 26535 transitions. [2021-12-17 16:17:15,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-17 16:17:15,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:17:15,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:17:15,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 16:17:15,248 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:17:15,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:17:15,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1289503009, now seen corresponding path program 1 times [2021-12-17 16:17:15,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:17:15,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875316519] [2021-12-17 16:17:15,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:17:15,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:17:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:17:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:17:15,308 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:17:15,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875316519] [2021-12-17 16:17:15,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875316519] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:17:15,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:17:15,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:17:15,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644398515] [2021-12-17 16:17:15,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:17:15,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:17:15,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:17:15,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:17:15,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:17:15,310 INFO L87 Difference]: Start difference. First operand 19277 states and 26535 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:21,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:17:21,718 INFO L93 Difference]: Finished difference Result 70268 states and 97892 transitions. [2021-12-17 16:17:21,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:17:21,718 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-12-17 16:17:21,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:17:21,830 INFO L225 Difference]: With dead ends: 70268 [2021-12-17 16:17:21,830 INFO L226 Difference]: Without dead ends: 62578 [2021-12-17 16:17:21,856 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:17:21,857 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 5896 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 1357 mSolverCounterSat, 358 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5896 SdHoareTripleChecker+Valid, 1713 SdHoareTripleChecker+Invalid, 1715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 358 IncrementalHoareTripleChecker+Valid, 1357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 16:17:21,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5896 Valid, 1713 Invalid, 1715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [358 Valid, 1357 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 16:17:21,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62578 states. [2021-12-17 16:17:23,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62578 to 19784. [2021-12-17 16:17:23,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19784 states, 19780 states have (on average 1.3761880687563195) internal successors, (27221), 19783 states have internal predecessors, (27221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:23,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19784 states to 19784 states and 27221 transitions. [2021-12-17 16:17:23,844 INFO L78 Accepts]: Start accepts. Automaton has 19784 states and 27221 transitions. Word has length 81 [2021-12-17 16:17:23,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:17:23,844 INFO L470 AbstractCegarLoop]: Abstraction has 19784 states and 27221 transitions. [2021-12-17 16:17:23,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:23,845 INFO L276 IsEmpty]: Start isEmpty. Operand 19784 states and 27221 transitions. [2021-12-17 16:17:23,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-17 16:17:23,854 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:17:23,854 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:17:23,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 16:17:23,854 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:17:23,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:17:23,855 INFO L85 PathProgramCache]: Analyzing trace with hash -677267389, now seen corresponding path program 1 times [2021-12-17 16:17:23,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:17:23,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971259097] [2021-12-17 16:17:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:17:23,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:17:23,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:17:23,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:17:23,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:17:23,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971259097] [2021-12-17 16:17:23,927 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971259097] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:17:23,927 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:17:23,927 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:17:23,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569654733] [2021-12-17 16:17:23,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:17:23,928 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 16:17:23,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:17:23,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 16:17:23,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 16:17:23,928 INFO L87 Difference]: Start difference. First operand 19784 states and 27221 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:26,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:17:26,568 INFO L93 Difference]: Finished difference Result 30964 states and 43233 transitions. [2021-12-17 16:17:26,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 16:17:26,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-12-17 16:17:26,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:17:26,608 INFO L225 Difference]: With dead ends: 30964 [2021-12-17 16:17:26,608 INFO L226 Difference]: Without dead ends: 30962 [2021-12-17 16:17:26,615 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 16:17:26,615 INFO L933 BasicCegarLoop]: 1277 mSDtfsCounter, 149 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 3624 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:17:26,615 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 3624 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:17:26,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30962 states. [2021-12-17 16:17:28,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30962 to 19782. [2021-12-17 16:17:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19782 states, 19779 states have (on average 1.37347691996562) internal successors, (27166), 19781 states have internal predecessors, (27166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:28,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19782 states to 19782 states and 27166 transitions. [2021-12-17 16:17:28,181 INFO L78 Accepts]: Start accepts. Automaton has 19782 states and 27166 transitions. Word has length 82 [2021-12-17 16:17:28,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:17:28,181 INFO L470 AbstractCegarLoop]: Abstraction has 19782 states and 27166 transitions. [2021-12-17 16:17:28,181 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:28,181 INFO L276 IsEmpty]: Start isEmpty. Operand 19782 states and 27166 transitions. [2021-12-17 16:17:28,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-17 16:17:28,191 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:17:28,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:17:28,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 16:17:28,192 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:17:28,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:17:28,192 INFO L85 PathProgramCache]: Analyzing trace with hash -2026028216, now seen corresponding path program 1 times [2021-12-17 16:17:28,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:17:28,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939153478] [2021-12-17 16:17:28,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:17:28,193 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:17:28,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:17:28,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:17:28,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:17:28,251 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939153478] [2021-12-17 16:17:28,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1939153478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:17:28,251 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:17:28,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:17:28,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80531913] [2021-12-17 16:17:28,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:17:28,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 16:17:28,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:17:28,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 16:17:28,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 16:17:28,253 INFO L87 Difference]: Start difference. First operand 19782 states and 27166 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:30,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:17:30,982 INFO L93 Difference]: Finished difference Result 30962 states and 43178 transitions. [2021-12-17 16:17:30,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 16:17:30,982 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2021-12-17 16:17:30,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:17:31,028 INFO L225 Difference]: With dead ends: 30962 [2021-12-17 16:17:31,028 INFO L226 Difference]: Without dead ends: 30960 [2021-12-17 16:17:31,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 16:17:31,040 INFO L933 BasicCegarLoop]: 1275 mSDtfsCounter, 149 mSDsluCounter, 2343 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 3618 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:17:31,041 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 3618 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:17:31,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30960 states. [2021-12-17 16:17:32,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30960 to 19780. [2021-12-17 16:17:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19780 states, 19778 states have (on average 1.3707654970168874) internal successors, (27111), 19779 states have internal predecessors, (27111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:32,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19780 states to 19780 states and 27111 transitions. [2021-12-17 16:17:32,695 INFO L78 Accepts]: Start accepts. Automaton has 19780 states and 27111 transitions. Word has length 82 [2021-12-17 16:17:32,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:17:32,695 INFO L470 AbstractCegarLoop]: Abstraction has 19780 states and 27111 transitions. [2021-12-17 16:17:32,695 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:32,695 INFO L276 IsEmpty]: Start isEmpty. Operand 19780 states and 27111 transitions. [2021-12-17 16:17:32,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-17 16:17:32,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:17:32,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:17:32,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 16:17:32,708 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:17:32,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:17:32,708 INFO L85 PathProgramCache]: Analyzing trace with hash 737634818, now seen corresponding path program 1 times [2021-12-17 16:17:32,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:17:32,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517091746] [2021-12-17 16:17:32,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:17:32,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:17:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:17:32,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:17:32,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:17:32,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517091746] [2021-12-17 16:17:32,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517091746] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:17:32,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:17:32,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:17:32,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006803035] [2021-12-17 16:17:32,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:17:32,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-17 16:17:32,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:17:32,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-17 16:17:32,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 16:17:32,767 INFO L87 Difference]: Start difference. First operand 19780 states and 27111 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:35,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:17:35,603 INFO L93 Difference]: Finished difference Result 30960 states and 43123 transitions. [2021-12-17 16:17:35,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-17 16:17:35,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-12-17 16:17:35,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:17:35,648 INFO L225 Difference]: With dead ends: 30960 [2021-12-17 16:17:35,649 INFO L226 Difference]: Without dead ends: 30958 [2021-12-17 16:17:35,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-17 16:17:35,662 INFO L933 BasicCegarLoop]: 1273 mSDtfsCounter, 149 mSDsluCounter, 2339 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 3612 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:17:35,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 3612 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:17:35,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30958 states. [2021-12-17 16:17:37,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30958 to 19778. [2021-12-17 16:17:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19778 states, 19777 states have (on average 1.3666885776406936) internal successors, (27029), 19777 states have internal predecessors, (27029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:37,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19778 states to 19778 states and 27029 transitions. [2021-12-17 16:17:37,504 INFO L78 Accepts]: Start accepts. Automaton has 19778 states and 27029 transitions. Word has length 84 [2021-12-17 16:17:37,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:17:37,504 INFO L470 AbstractCegarLoop]: Abstraction has 19778 states and 27029 transitions. [2021-12-17 16:17:37,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:37,505 INFO L276 IsEmpty]: Start isEmpty. Operand 19778 states and 27029 transitions. [2021-12-17 16:17:37,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-17 16:17:37,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:17:37,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:17:37,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 16:17:37,517 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:17:37,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:17:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash 541501968, now seen corresponding path program 1 times [2021-12-17 16:17:37,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:17:37,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044224275] [2021-12-17 16:17:37,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:17:37,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:17:37,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:17:37,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:17:37,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:17:37,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044224275] [2021-12-17 16:17:37,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2044224275] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:17:37,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:17:37,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:17:37,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551544535] [2021-12-17 16:17:37,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:17:37,625 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:17:37,625 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:17:37,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:17:37,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:17:37,626 INFO L87 Difference]: Start difference. First operand 19778 states and 27029 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 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) [2021-12-17 16:17:43,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:17:43,773 INFO L93 Difference]: Finished difference Result 59885 states and 83810 transitions. [2021-12-17 16:17:43,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:17:43,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 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 [2021-12-17 16:17:43,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:17:43,842 INFO L225 Difference]: With dead ends: 59885 [2021-12-17 16:17:43,842 INFO L226 Difference]: Without dead ends: 48637 [2021-12-17 16:17:43,867 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:17:43,868 INFO L933 BasicCegarLoop]: 787 mSDtfsCounter, 5886 mSDsluCounter, 2295 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5886 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 2354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:17:43,868 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5886 Valid, 3082 Invalid, 2354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:17:43,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48637 states. [2021-12-17 16:17:45,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48637 to 19744. [2021-12-17 16:17:45,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19744 states, 19743 states have (on average 1.3664083472623207) internal successors, (26977), 19743 states have internal predecessors, (26977), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:46,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19744 states to 19744 states and 26977 transitions. [2021-12-17 16:17:46,000 INFO L78 Accepts]: Start accepts. Automaton has 19744 states and 26977 transitions. Word has length 85 [2021-12-17 16:17:46,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:17:46,000 INFO L470 AbstractCegarLoop]: Abstraction has 19744 states and 26977 transitions. [2021-12-17 16:17:46,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 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) [2021-12-17 16:17:46,001 INFO L276 IsEmpty]: Start isEmpty. Operand 19744 states and 26977 transitions. [2021-12-17 16:17:46,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-17 16:17:46,014 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:17:46,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:17:46,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 16:17:46,014 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:17:46,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:17:46,015 INFO L85 PathProgramCache]: Analyzing trace with hash -777579654, now seen corresponding path program 1 times [2021-12-17 16:17:46,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:17:46,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992095390] [2021-12-17 16:17:46,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:17:46,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:17:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:17:46,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:17:46,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:17:46,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992095390] [2021-12-17 16:17:46,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992095390] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:17:46,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:17:46,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:17:46,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678147838] [2021-12-17 16:17:46,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:17:46,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:17:46,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:17:46,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:17:46,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:17:46,081 INFO L87 Difference]: Start difference. First operand 19744 states and 26977 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) 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) [2021-12-17 16:17:55,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:17:55,687 INFO L93 Difference]: Finished difference Result 77232 states and 107970 transitions. [2021-12-17 16:17:55,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:17:55,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) 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 [2021-12-17 16:17:55,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:17:55,814 INFO L225 Difference]: With dead ends: 77232 [2021-12-17 16:17:55,814 INFO L226 Difference]: Without dead ends: 69668 [2021-12-17 16:17:55,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:17:55,839 INFO L933 BasicCegarLoop]: 748 mSDtfsCounter, 5126 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 1326 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5126 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 16:17:55,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5126 Valid, 1901 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1326 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 16:17:55,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69668 states. [2021-12-17 16:17:58,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69668 to 19804. [2021-12-17 16:17:58,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19804 states, 19803 states have (on average 1.3663081351310407) internal successors, (27057), 19803 states have internal predecessors, (27057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:17:58,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19804 states to 19804 states and 27057 transitions. [2021-12-17 16:17:58,341 INFO L78 Accepts]: Start accepts. Automaton has 19804 states and 27057 transitions. Word has length 85 [2021-12-17 16:17:58,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:17:58,341 INFO L470 AbstractCegarLoop]: Abstraction has 19804 states and 27057 transitions. [2021-12-17 16:17:58,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) 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) [2021-12-17 16:17:58,342 INFO L276 IsEmpty]: Start isEmpty. Operand 19804 states and 27057 transitions. [2021-12-17 16:17:58,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-17 16:17:58,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:17:58,353 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:17:58,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 16:17:58,353 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:17:58,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:17:58,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1961391530, now seen corresponding path program 1 times [2021-12-17 16:17:58,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:17:58,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442982085] [2021-12-17 16:17:58,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:17:58,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:17:58,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:17:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:17:58,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:17:58,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442982085] [2021-12-17 16:17:58,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442982085] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:17:58,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:17:58,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:17:58,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378141668] [2021-12-17 16:17:58,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:17:58,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:17:58,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:17:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:17:58,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:17:58,409 INFO L87 Difference]: Start difference. First operand 19804 states and 27057 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) 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) [2021-12-17 16:18:07,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:18:07,550 INFO L93 Difference]: Finished difference Result 69798 states and 97151 transitions. [2021-12-17 16:18:07,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:18:07,550 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) 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 [2021-12-17 16:18:07,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:18:07,660 INFO L225 Difference]: With dead ends: 69798 [2021-12-17 16:18:07,660 INFO L226 Difference]: Without dead ends: 62326 [2021-12-17 16:18:07,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:18:07,688 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 4931 mSDsluCounter, 1154 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4931 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 1820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:18:07,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4931 Valid, 1862 Invalid, 1820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:18:07,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62326 states. [2021-12-17 16:18:10,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62326 to 19894. [2021-12-17 16:18:10,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19894 states, 19893 states have (on average 1.3661589503845575) internal successors, (27177), 19893 states have internal predecessors, (27177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:18:10,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19894 states to 19894 states and 27177 transitions. [2021-12-17 16:18:10,179 INFO L78 Accepts]: Start accepts. Automaton has 19894 states and 27177 transitions. Word has length 85 [2021-12-17 16:18:10,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:18:10,180 INFO L470 AbstractCegarLoop]: Abstraction has 19894 states and 27177 transitions. [2021-12-17 16:18:10,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) 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) [2021-12-17 16:18:10,180 INFO L276 IsEmpty]: Start isEmpty. Operand 19894 states and 27177 transitions. [2021-12-17 16:18:10,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-17 16:18:10,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:18:10,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:18:10,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 16:18:10,193 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:18:10,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:18:10,193 INFO L85 PathProgramCache]: Analyzing trace with hash 385836517, now seen corresponding path program 1 times [2021-12-17 16:18:10,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:18:10,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671610722] [2021-12-17 16:18:10,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:18:10,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:18:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:18:10,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:18:10,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:18:10,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671610722] [2021-12-17 16:18:10,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671610722] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:18:10,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:18:10,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:18:10,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681334288] [2021-12-17 16:18:10,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:18:10,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:18:10,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:18:10,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:18:10,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:18:10,301 INFO L87 Difference]: Start difference. First operand 19894 states and 27177 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 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) [2021-12-17 16:18:17,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:18:17,798 INFO L93 Difference]: Finished difference Result 59356 states and 83027 transitions. [2021-12-17 16:18:17,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:18:17,799 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 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 [2021-12-17 16:18:17,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:18:17,871 INFO L225 Difference]: With dead ends: 59356 [2021-12-17 16:18:17,871 INFO L226 Difference]: Without dead ends: 48164 [2021-12-17 16:18:17,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:18:17,895 INFO L933 BasicCegarLoop]: 807 mSDtfsCounter, 4434 mSDsluCounter, 2388 mSDsCounter, 0 mSdLazyCounter, 2420 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4434 SdHoareTripleChecker+Valid, 3195 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 2420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:18:17,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4434 Valid, 3195 Invalid, 2554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 2420 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-17 16:18:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48164 states. [2021-12-17 16:18:20,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48164 to 19888. [2021-12-17 16:18:20,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19888 states, 19887 states have (on average 1.3656660129732991) internal successors, (27159), 19887 states have internal predecessors, (27159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:18:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19888 states to 19888 states and 27159 transitions. [2021-12-17 16:18:20,466 INFO L78 Accepts]: Start accepts. Automaton has 19888 states and 27159 transitions. Word has length 85 [2021-12-17 16:18:20,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:18:20,466 INFO L470 AbstractCegarLoop]: Abstraction has 19888 states and 27159 transitions. [2021-12-17 16:18:20,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 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) [2021-12-17 16:18:20,466 INFO L276 IsEmpty]: Start isEmpty. Operand 19888 states and 27159 transitions. [2021-12-17 16:18:20,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-12-17 16:18:20,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:18:20,478 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:18:20,478 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 16:18:20,479 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:18:20,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:18:20,479 INFO L85 PathProgramCache]: Analyzing trace with hash 1096211298, now seen corresponding path program 1 times [2021-12-17 16:18:20,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:18:20,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152914653] [2021-12-17 16:18:20,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:18:20,479 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:18:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:18:20,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:18:20,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:18:20,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152914653] [2021-12-17 16:18:20,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152914653] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:18:20,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:18:20,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 16:18:20,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173128471] [2021-12-17 16:18:20,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:18:20,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 16:18:20,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:18:20,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 16:18:20,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 16:18:20,616 INFO L87 Difference]: Start difference. First operand 19888 states and 27159 transitions. Second operand has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 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) [2021-12-17 16:18:30,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:18:30,402 INFO L93 Difference]: Finished difference Result 63059 states and 86988 transitions. [2021-12-17 16:18:30,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 16:18:30,403 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 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 [2021-12-17 16:18:30,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:18:30,506 INFO L225 Difference]: With dead ends: 63059 [2021-12-17 16:18:30,506 INFO L226 Difference]: Without dead ends: 59142 [2021-12-17 16:18:30,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:18:30,533 INFO L933 BasicCegarLoop]: 912 mSDtfsCounter, 4982 mSDsluCounter, 3427 mSDsCounter, 0 mSdLazyCounter, 3587 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4982 SdHoareTripleChecker+Valid, 4339 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 3587 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:18:30,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4982 Valid, 4339 Invalid, 3679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 3587 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-17 16:18:30,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59142 states. [2021-12-17 16:18:33,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59142 to 19892. [2021-12-17 16:18:33,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19892 states, 19891 states have (on average 1.3655422050173445) internal successors, (27162), 19891 states have internal predecessors, (27162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:18:33,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19892 states to 19892 states and 27162 transitions. [2021-12-17 16:18:33,416 INFO L78 Accepts]: Start accepts. Automaton has 19892 states and 27162 transitions. Word has length 85 [2021-12-17 16:18:33,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:18:33,416 INFO L470 AbstractCegarLoop]: Abstraction has 19892 states and 27162 transitions. [2021-12-17 16:18:33,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.5) internal successors, (85), 9 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) [2021-12-17 16:18:33,416 INFO L276 IsEmpty]: Start isEmpty. Operand 19892 states and 27162 transitions. [2021-12-17 16:18:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-17 16:18:33,428 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:18:33,428 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:18:33,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 16:18:33,428 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:18:33,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:18:33,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1328007044, now seen corresponding path program 1 times [2021-12-17 16:18:33,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:18:33,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607120267] [2021-12-17 16:18:33,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:18:33,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:18:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:18:33,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:18:33,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:18:33,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607120267] [2021-12-17 16:18:33,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607120267] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:18:33,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:18:33,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:18:33,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187533610] [2021-12-17 16:18:33,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:18:33,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:18:33,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:18:33,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:18:33,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:18:33,515 INFO L87 Difference]: Start difference. First operand 19892 states and 27162 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:18:41,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:18:41,956 INFO L93 Difference]: Finished difference Result 60129 states and 84149 transitions. [2021-12-17 16:18:41,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:18:41,957 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-12-17 16:18:41,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:18:42,022 INFO L225 Difference]: With dead ends: 60129 [2021-12-17 16:18:42,022 INFO L226 Difference]: Without dead ends: 48489 [2021-12-17 16:18:42,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:18:42,046 INFO L933 BasicCegarLoop]: 776 mSDtfsCounter, 6006 mSDsluCounter, 2249 mSDsCounter, 0 mSdLazyCounter, 2049 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6006 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 2204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 2049 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:18:42,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6006 Valid, 3025 Invalid, 2204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 2049 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:18:42,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48489 states. [2021-12-17 16:18:44,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48489 to 19650. [2021-12-17 16:18:44,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19650 states, 19649 states have (on average 1.3655656776426282) internal successors, (26832), 19649 states have internal predecessors, (26832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:18:44,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19650 states to 19650 states and 26832 transitions. [2021-12-17 16:18:44,949 INFO L78 Accepts]: Start accepts. Automaton has 19650 states and 26832 transitions. Word has length 86 [2021-12-17 16:18:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:18:44,949 INFO L470 AbstractCegarLoop]: Abstraction has 19650 states and 26832 transitions. [2021-12-17 16:18:44,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:18:44,949 INFO L276 IsEmpty]: Start isEmpty. Operand 19650 states and 26832 transitions. [2021-12-17 16:18:44,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-17 16:18:44,961 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:18:44,961 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:18:44,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-17 16:18:44,961 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:18:44,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:18:44,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1513152942, now seen corresponding path program 1 times [2021-12-17 16:18:44,961 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:18:44,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837787346] [2021-12-17 16:18:44,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:18:44,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:18:44,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:18:45,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:18:45,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:18:45,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837787346] [2021-12-17 16:18:45,201 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837787346] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:18:45,201 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:18:45,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:18:45,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949822199] [2021-12-17 16:18:45,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:18:45,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:18:45,202 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:18:45,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:18:45,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:18:45,202 INFO L87 Difference]: Start difference. First operand 19650 states and 26832 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:19:05,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:19:05,776 INFO L93 Difference]: Finished difference Result 117373 states and 164999 transitions. [2021-12-17 16:19:05,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-17 16:19:05,777 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-12-17 16:19:05,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:19:05,972 INFO L225 Difference]: With dead ends: 117373 [2021-12-17 16:19:05,972 INFO L226 Difference]: Without dead ends: 105519 [2021-12-17 16:19:06,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=559, Unknown=0, NotChecked=0, Total=756 [2021-12-17 16:19:06,004 INFO L933 BasicCegarLoop]: 1435 mSDtfsCounter, 7581 mSDsluCounter, 8308 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7581 SdHoareTripleChecker+Valid, 9743 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:19:06,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7581 Valid, 9743 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:19:06,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105519 states. [2021-12-17 16:19:09,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105519 to 18964. [2021-12-17 16:19:09,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18964 states, 18963 states have (on average 1.3672942045035068) internal successors, (25928), 18963 states have internal predecessors, (25928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:19:09,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18964 states to 18964 states and 25928 transitions. [2021-12-17 16:19:09,954 INFO L78 Accepts]: Start accepts. Automaton has 18964 states and 25928 transitions. Word has length 86 [2021-12-17 16:19:09,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:19:09,954 INFO L470 AbstractCegarLoop]: Abstraction has 18964 states and 25928 transitions. [2021-12-17 16:19:09,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:19:09,954 INFO L276 IsEmpty]: Start isEmpty. Operand 18964 states and 25928 transitions. [2021-12-17 16:19:09,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-17 16:19:09,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:19:09,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:19:09,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-17 16:19:09,964 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:19:09,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:19:09,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1121074984, now seen corresponding path program 1 times [2021-12-17 16:19:09,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:19:09,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696087847] [2021-12-17 16:19:09,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:19:09,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:19:09,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:19:10,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:19:10,016 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:19:10,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696087847] [2021-12-17 16:19:10,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696087847] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:19:10,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:19:10,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:19:10,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317056958] [2021-12-17 16:19:10,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:19:10,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:19:10,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:19:10,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:19:10,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:19:10,018 INFO L87 Difference]: Start difference. First operand 18964 states and 25928 transitions. Second operand has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:19:24,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:19:24,493 INFO L93 Difference]: Finished difference Result 68900 states and 95952 transitions. [2021-12-17 16:19:24,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:19:24,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-12-17 16:19:24,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:19:24,588 INFO L225 Difference]: With dead ends: 68900 [2021-12-17 16:19:24,588 INFO L226 Difference]: Without dead ends: 61392 [2021-12-17 16:19:24,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:19:24,609 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 4559 mSDsluCounter, 1099 mSDsCounter, 0 mSdLazyCounter, 1361 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4559 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 1683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:19:24,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4559 Valid, 1771 Invalid, 1683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 1361 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:19:24,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61392 states. [2021-12-17 16:19:28,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61392 to 19159. [2021-12-17 16:19:28,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19159 states, 19158 states have (on average 1.3672095208268087) internal successors, (26193), 19158 states have internal predecessors, (26193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:19:28,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19159 states to 19159 states and 26193 transitions. [2021-12-17 16:19:28,212 INFO L78 Accepts]: Start accepts. Automaton has 19159 states and 26193 transitions. Word has length 86 [2021-12-17 16:19:28,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:19:28,212 INFO L470 AbstractCegarLoop]: Abstraction has 19159 states and 26193 transitions. [2021-12-17 16:19:28,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.285714285714286) internal successors, (86), 6 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:19:28,213 INFO L276 IsEmpty]: Start isEmpty. Operand 19159 states and 26193 transitions. [2021-12-17 16:19:28,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-17 16:19:28,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:19:28,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:19:28,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-17 16:19:28,224 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:19:28,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:19:28,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1752557270, now seen corresponding path program 1 times [2021-12-17 16:19:28,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:19:28,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626896664] [2021-12-17 16:19:28,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:19:28,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:19:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:19:28,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:19:28,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:19:28,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626896664] [2021-12-17 16:19:28,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626896664] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:19:28,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:19:28,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:19:28,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117493923] [2021-12-17 16:19:28,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:19:28,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:19:28,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:19:28,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:19:28,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:19:28,455 INFO L87 Difference]: Start difference. First operand 19159 states and 26193 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:19:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:19:46,869 INFO L93 Difference]: Finished difference Result 88411 states and 124773 transitions. [2021-12-17 16:19:46,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 16:19:46,870 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-12-17 16:19:46,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:19:47,010 INFO L225 Difference]: With dead ends: 88411 [2021-12-17 16:19:47,011 INFO L226 Difference]: Without dead ends: 77165 [2021-12-17 16:19:47,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2021-12-17 16:19:47,042 INFO L933 BasicCegarLoop]: 1231 mSDtfsCounter, 6586 mSDsluCounter, 4565 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6586 SdHoareTripleChecker+Valid, 5796 SdHoareTripleChecker+Invalid, 1116 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:19:47,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6586 Valid, 5796 Invalid, 1116 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:19:47,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77165 states. [2021-12-17 16:19:51,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77165 to 19093. [2021-12-17 16:19:51,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19093 states, 19092 states have (on average 1.3669076052796982) internal successors, (26097), 19092 states have internal predecessors, (26097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:19:51,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19093 states to 19093 states and 26097 transitions. [2021-12-17 16:19:51,100 INFO L78 Accepts]: Start accepts. Automaton has 19093 states and 26097 transitions. Word has length 86 [2021-12-17 16:19:51,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:19:51,101 INFO L470 AbstractCegarLoop]: Abstraction has 19093 states and 26097 transitions. [2021-12-17 16:19:51,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 12 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:19:51,101 INFO L276 IsEmpty]: Start isEmpty. Operand 19093 states and 26097 transitions. [2021-12-17 16:19:51,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-17 16:19:51,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:19:51,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:19:51,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-17 16:19:51,112 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:19:51,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:19:51,113 INFO L85 PathProgramCache]: Analyzing trace with hash -848609455, now seen corresponding path program 1 times [2021-12-17 16:19:51,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:19:51,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651585277] [2021-12-17 16:19:51,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:19:51,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:19:51,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:19:51,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:19:51,224 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:19:51,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651585277] [2021-12-17 16:19:51,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651585277] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:19:51,225 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:19:51,225 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 16:19:51,225 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413637330] [2021-12-17 16:19:51,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:19:51,225 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 16:19:51,225 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:19:51,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 16:19:51,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-17 16:19:51,226 INFO L87 Difference]: Start difference. First operand 19093 states and 26097 transitions. Second operand has 10 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:20:06,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:20:06,374 INFO L93 Difference]: Finished difference Result 66722 states and 92349 transitions. [2021-12-17 16:20:06,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 16:20:06,374 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-12-17 16:20:06,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:20:06,474 INFO L225 Difference]: With dead ends: 66722 [2021-12-17 16:20:06,475 INFO L226 Difference]: Without dead ends: 60683 [2021-12-17 16:20:06,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:20:06,493 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 5759 mSDsluCounter, 3034 mSDsCounter, 0 mSdLazyCounter, 3106 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5759 SdHoareTripleChecker+Valid, 3851 SdHoareTripleChecker+Invalid, 3186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 3106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:20:06,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5759 Valid, 3851 Invalid, 3186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 3106 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-17 16:20:06,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60683 states. [2021-12-17 16:20:10,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60683 to 19089. [2021-12-17 16:20:10,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19089 states, 19088 states have (on average 1.3667749371332774) internal successors, (26089), 19088 states have internal predecessors, (26089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:20:10,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19089 states to 19089 states and 26089 transitions. [2021-12-17 16:20:10,492 INFO L78 Accepts]: Start accepts. Automaton has 19089 states and 26089 transitions. Word has length 86 [2021-12-17 16:20:10,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:20:10,493 INFO L470 AbstractCegarLoop]: Abstraction has 19089 states and 26089 transitions. [2021-12-17 16:20:10,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.6) internal successors, (86), 9 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:20:10,493 INFO L276 IsEmpty]: Start isEmpty. Operand 19089 states and 26089 transitions. [2021-12-17 16:20:10,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-12-17 16:20:10,504 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:20:10,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:20:10,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-17 16:20:10,504 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:20:10,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:20:10,505 INFO L85 PathProgramCache]: Analyzing trace with hash 706308482, now seen corresponding path program 1 times [2021-12-17 16:20:10,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:20:10,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038526238] [2021-12-17 16:20:10,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:20:10,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:20:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:20:10,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:20:10,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:20:10,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038526238] [2021-12-17 16:20:10,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038526238] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:20:10,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:20:10,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:20:10,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1478459468] [2021-12-17 16:20:10,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:20:10,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:20:10,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:20:10,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:20:10,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:20:10,723 INFO L87 Difference]: Start difference. First operand 19089 states and 26089 transitions. Second operand has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:20:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:20:42,745 INFO L93 Difference]: Finished difference Result 132633 states and 187337 transitions. [2021-12-17 16:20:42,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-17 16:20:42,746 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-12-17 16:20:42,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:20:42,955 INFO L225 Difference]: With dead ends: 132633 [2021-12-17 16:20:42,955 INFO L226 Difference]: Without dead ends: 121057 [2021-12-17 16:20:42,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=229, Invalid=763, Unknown=0, NotChecked=0, Total=992 [2021-12-17 16:20:42,988 INFO L933 BasicCegarLoop]: 1198 mSDtfsCounter, 8582 mSDsluCounter, 9183 mSDsCounter, 0 mSdLazyCounter, 1704 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8582 SdHoareTripleChecker+Valid, 10381 SdHoareTripleChecker+Invalid, 1945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 1704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:20:42,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8582 Valid, 10381 Invalid, 1945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 1704 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:20:43,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121057 states. [2021-12-17 16:20:47,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121057 to 18669. [2021-12-17 16:20:47,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18669 states, 18668 states have (on average 1.3682772659095779) internal successors, (25543), 18668 states have internal predecessors, (25543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:20:47,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18669 states to 18669 states and 25543 transitions. [2021-12-17 16:20:47,585 INFO L78 Accepts]: Start accepts. Automaton has 18669 states and 25543 transitions. Word has length 86 [2021-12-17 16:20:47,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:20:47,585 INFO L470 AbstractCegarLoop]: Abstraction has 18669 states and 25543 transitions. [2021-12-17 16:20:47,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.615384615384615) internal successors, (86), 13 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:20:47,585 INFO L276 IsEmpty]: Start isEmpty. Operand 18669 states and 25543 transitions. [2021-12-17 16:20:47,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-17 16:20:47,596 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:20:47,596 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:20:47,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-17 16:20:47,596 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:20:47,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:20:47,597 INFO L85 PathProgramCache]: Analyzing trace with hash -617148630, now seen corresponding path program 1 times [2021-12-17 16:20:47,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:20:47,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488989548] [2021-12-17 16:20:47,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:20:47,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:20:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:20:47,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:20:47,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:20:47,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488989548] [2021-12-17 16:20:47,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488989548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:20:47,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:20:47,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:20:47,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961141197] [2021-12-17 16:20:47,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:20:47,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:20:47,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:20:47,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:20:47,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:20:47,697 INFO L87 Difference]: Start difference. First operand 18669 states and 25543 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:21:05,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:21:05,398 INFO L93 Difference]: Finished difference Result 73707 states and 103533 transitions. [2021-12-17 16:21:05,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:21:05,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-12-17 16:21:05,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:21:05,494 INFO L225 Difference]: With dead ends: 73707 [2021-12-17 16:21:05,495 INFO L226 Difference]: Without dead ends: 62355 [2021-12-17 16:21:05,517 INFO L932 BasicCegarLoop]: 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 [2021-12-17 16:21:05,518 INFO L933 BasicCegarLoop]: 693 mSDtfsCounter, 5105 mSDsluCounter, 2352 mSDsCounter, 0 mSdLazyCounter, 2067 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5105 SdHoareTripleChecker+Valid, 3045 SdHoareTripleChecker+Invalid, 2212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2067 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:21:05,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5105 Valid, 3045 Invalid, 2212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2067 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:21:05,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62355 states. [2021-12-17 16:21:09,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62355 to 18583. [2021-12-17 16:21:09,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18583 states, 18582 states have (on average 1.3679367129480142) internal successors, (25419), 18582 states have internal predecessors, (25419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:21:09,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18583 states to 18583 states and 25419 transitions. [2021-12-17 16:21:09,913 INFO L78 Accepts]: Start accepts. Automaton has 18583 states and 25419 transitions. Word has length 87 [2021-12-17 16:21:09,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:21:09,913 INFO L470 AbstractCegarLoop]: Abstraction has 18583 states and 25419 transitions. [2021-12-17 16:21:09,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:21:09,913 INFO L276 IsEmpty]: Start isEmpty. Operand 18583 states and 25419 transitions. [2021-12-17 16:21:09,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-17 16:21:09,923 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:21:09,924 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:21:09,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-17 16:21:09,924 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:21:09,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:21:09,924 INFO L85 PathProgramCache]: Analyzing trace with hash -85155516, now seen corresponding path program 1 times [2021-12-17 16:21:09,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:21:09,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112577525] [2021-12-17 16:21:09,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:21:09,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:21:09,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:21:09,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:21:09,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:21:09,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112577525] [2021-12-17 16:21:09,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112577525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:21:09,976 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:21:09,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:21:09,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414238482] [2021-12-17 16:21:09,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:21:09,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:21:09,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:21:09,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:21:09,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:21:09,977 INFO L87 Difference]: Start difference. First operand 18583 states and 25419 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:21:33,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:21:33,419 INFO L93 Difference]: Finished difference Result 84264 states and 118218 transitions. [2021-12-17 16:21:33,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:21:33,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-12-17 16:21:33,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:21:33,546 INFO L225 Difference]: With dead ends: 84264 [2021-12-17 16:21:33,546 INFO L226 Difference]: Without dead ends: 76440 [2021-12-17 16:21:33,567 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:21:33,568 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 4975 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4975 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 1496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 16:21:33,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4975 Valid, 1798 Invalid, 1496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 16:21:33,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76440 states. [2021-12-17 16:21:38,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76440 to 18658. [2021-12-17 16:21:38,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18658 states, 18657 states have (on average 1.367797609476336) internal successors, (25519), 18657 states have internal predecessors, (25519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:21:38,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18658 states to 18658 states and 25519 transitions. [2021-12-17 16:21:38,486 INFO L78 Accepts]: Start accepts. Automaton has 18658 states and 25519 transitions. Word has length 87 [2021-12-17 16:21:38,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:21:38,486 INFO L470 AbstractCegarLoop]: Abstraction has 18658 states and 25519 transitions. [2021-12-17 16:21:38,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:21:38,487 INFO L276 IsEmpty]: Start isEmpty. Operand 18658 states and 25519 transitions. [2021-12-17 16:21:38,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-17 16:21:38,498 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:21:38,499 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:21:38,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-17 16:21:38,499 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:21:38,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:21:38,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1124356666, now seen corresponding path program 1 times [2021-12-17 16:21:38,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:21:38,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389300330] [2021-12-17 16:21:38,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:21:38,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:21:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:21:38,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:21:38,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:21:38,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389300330] [2021-12-17 16:21:38,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389300330] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:21:38,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:21:38,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 16:21:38,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747993788] [2021-12-17 16:21:38,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:21:38,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-17 16:21:38,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:21:38,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-17 16:21:38,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-17 16:21:38,619 INFO L87 Difference]: Start difference. First operand 18658 states and 25519 transitions. Second operand has 10 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:21:59,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:21:59,571 INFO L93 Difference]: Finished difference Result 79914 states and 112000 transitions. [2021-12-17 16:21:59,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 16:21:59,571 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-12-17 16:21:59,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:21:59,677 INFO L225 Difference]: With dead ends: 79914 [2021-12-17 16:21:59,677 INFO L226 Difference]: Without dead ends: 67680 [2021-12-17 16:21:59,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=169, Invalid=431, Unknown=0, NotChecked=0, Total=600 [2021-12-17 16:21:59,698 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 6375 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 2254 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6375 SdHoareTripleChecker+Valid, 3513 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 2254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:21:59,698 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6375 Valid, 3513 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 2254 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 16:21:59,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67680 states. [2021-12-17 16:22:04,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67680 to 18116. [2021-12-17 16:22:04,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18116 states, 18115 states have (on average 1.3680375379519736) internal successors, (24782), 18115 states have internal predecessors, (24782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:04,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18116 states to 18116 states and 24782 transitions. [2021-12-17 16:22:04,502 INFO L78 Accepts]: Start accepts. Automaton has 18116 states and 24782 transitions. Word has length 87 [2021-12-17 16:22:04,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:04,502 INFO L470 AbstractCegarLoop]: Abstraction has 18116 states and 24782 transitions. [2021-12-17 16:22:04,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.7) internal successors, (87), 9 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:04,503 INFO L276 IsEmpty]: Start isEmpty. Operand 18116 states and 24782 transitions. [2021-12-17 16:22:04,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-17 16:22:04,514 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:04,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:04,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-17 16:22:04,515 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:22:04,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:04,515 INFO L85 PathProgramCache]: Analyzing trace with hash -322983923, now seen corresponding path program 1 times [2021-12-17 16:22:04,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:04,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761863353] [2021-12-17 16:22:04,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:04,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:04,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:04,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:04,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:04,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761863353] [2021-12-17 16:22:04,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761863353] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:04,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:04,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:22:04,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749731334] [2021-12-17 16:22:04,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:04,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:22:04,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:04,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:22:04,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:22:04,594 INFO L87 Difference]: Start difference. First operand 18116 states and 24782 transitions. Second operand has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:19,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:19,479 INFO L93 Difference]: Finished difference Result 57822 states and 81035 transitions. [2021-12-17 16:22:19,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:22:19,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-12-17 16:22:19,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:19,546 INFO L225 Difference]: With dead ends: 57822 [2021-12-17 16:22:19,546 INFO L226 Difference]: Without dead ends: 46318 [2021-12-17 16:22:19,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=326, Unknown=0, NotChecked=0, Total=462 [2021-12-17 16:22:19,563 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 5136 mSDsluCounter, 2139 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 168 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5136 SdHoareTripleChecker+Valid, 2882 SdHoareTripleChecker+Invalid, 2166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 168 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:19,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5136 Valid, 2882 Invalid, 2166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [168 Valid, 1998 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:22:19,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46318 states. [2021-12-17 16:22:24,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46318 to 17936. [2021-12-17 16:22:24,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17936 states, 17935 states have (on average 1.3677167549484248) internal successors, (24530), 17935 states have internal predecessors, (24530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:24,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17936 states to 17936 states and 24530 transitions. [2021-12-17 16:22:24,243 INFO L78 Accepts]: Start accepts. Automaton has 17936 states and 24530 transitions. Word has length 87 [2021-12-17 16:22:24,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:24,243 INFO L470 AbstractCegarLoop]: Abstraction has 17936 states and 24530 transitions. [2021-12-17 16:22:24,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.666666666666666) internal successors, (87), 8 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:24,243 INFO L276 IsEmpty]: Start isEmpty. Operand 17936 states and 24530 transitions. [2021-12-17 16:22:24,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-17 16:22:24,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:24,255 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:24,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-17 16:22:24,255 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:22:24,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:24,256 INFO L85 PathProgramCache]: Analyzing trace with hash 13300459, now seen corresponding path program 1 times [2021-12-17 16:22:24,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:24,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643692781] [2021-12-17 16:22:24,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:24,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:24,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:24,515 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:24,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643692781] [2021-12-17 16:22:24,515 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643692781] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:24,515 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:24,515 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:22:24,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679836439] [2021-12-17 16:22:24,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:24,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:22:24,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:24,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:22:24,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:22:24,516 INFO L87 Difference]: Start difference. First operand 17936 states and 24530 transitions. Second operand has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:53,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:53,881 INFO L93 Difference]: Finished difference Result 100968 states and 142346 transitions. [2021-12-17 16:22:53,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 16:22:53,881 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-12-17 16:22:53,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:54,031 INFO L225 Difference]: With dead ends: 100968 [2021-12-17 16:22:54,031 INFO L226 Difference]: Without dead ends: 89517 [2021-12-17 16:22:54,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2021-12-17 16:22:54,059 INFO L933 BasicCegarLoop]: 1420 mSDtfsCounter, 6915 mSDsluCounter, 6561 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 213 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6915 SdHoareTripleChecker+Valid, 7981 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 213 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:54,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6915 Valid, 7981 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [213 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:22:54,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89517 states. [2021-12-17 16:22:59,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89517 to 17665. [2021-12-17 16:22:59,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17665 states, 17664 states have (on average 1.3673007246376812) internal successors, (24152), 17664 states have internal predecessors, (24152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:59,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17665 states to 17665 states and 24152 transitions. [2021-12-17 16:22:59,308 INFO L78 Accepts]: Start accepts. Automaton has 17665 states and 24152 transitions. Word has length 88 [2021-12-17 16:22:59,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:59,309 INFO L470 AbstractCegarLoop]: Abstraction has 17665 states and 24152 transitions. [2021-12-17 16:22:59,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.769230769230769) internal successors, (88), 13 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:59,309 INFO L276 IsEmpty]: Start isEmpty. Operand 17665 states and 24152 transitions. [2021-12-17 16:22:59,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-17 16:22:59,319 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:59,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:59,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-17 16:22:59,319 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:22:59,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:59,319 INFO L85 PathProgramCache]: Analyzing trace with hash 108333151, now seen corresponding path program 1 times [2021-12-17 16:22:59,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:59,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785788486] [2021-12-17 16:22:59,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:59,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:59,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:59,527 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:59,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785788486] [2021-12-17 16:22:59,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785788486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:59,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:59,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:22:59,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627998799] [2021-12-17 16:22:59,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:59,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:22:59,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:59,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:22:59,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:22:59,528 INFO L87 Difference]: Start difference. First operand 17665 states and 24152 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:23:49,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:23:49,529 INFO L93 Difference]: Finished difference Result 143127 states and 202511 transitions. [2021-12-17 16:23:49,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-17 16:23:49,529 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-12-17 16:23:49,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:23:49,767 INFO L225 Difference]: With dead ends: 143127 [2021-12-17 16:23:49,767 INFO L226 Difference]: Without dead ends: 131935 [2021-12-17 16:23:49,805 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 308 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=301, Invalid=1031, Unknown=0, NotChecked=0, Total=1332 [2021-12-17 16:23:49,805 INFO L933 BasicCegarLoop]: 1033 mSDtfsCounter, 8150 mSDsluCounter, 6735 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 191 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8150 SdHoareTripleChecker+Valid, 7768 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 191 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:23:49,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8150 Valid, 7768 Invalid, 2215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [191 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-17 16:23:49,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131935 states. [2021-12-17 16:23:55,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131935 to 17689. [2021-12-17 16:23:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17689 states, 17688 states have (on average 1.3674807779285392) internal successors, (24188), 17688 states have internal predecessors, (24188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:23:55,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17689 states to 17689 states and 24188 transitions. [2021-12-17 16:23:55,863 INFO L78 Accepts]: Start accepts. Automaton has 17689 states and 24188 transitions. Word has length 88 [2021-12-17 16:23:55,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:23:55,863 INFO L470 AbstractCegarLoop]: Abstraction has 17689 states and 24188 transitions. [2021-12-17 16:23:55,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 12 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:23:55,863 INFO L276 IsEmpty]: Start isEmpty. Operand 17689 states and 24188 transitions. [2021-12-17 16:23:55,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-17 16:23:55,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:23:55,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:23:55,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-17 16:23:55,873 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:23:55,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:23:55,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1569694279, now seen corresponding path program 1 times [2021-12-17 16:23:55,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:23:55,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416188175] [2021-12-17 16:23:55,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:23:55,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:23:55,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:23:55,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:23:55,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:23:55,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416188175] [2021-12-17 16:23:55,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416188175] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:23:55,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:23:55,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:23:55,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605252629] [2021-12-17 16:23:55,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:23:55,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:23:55,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:23:55,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:23:55,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:23:55,939 INFO L87 Difference]: Start difference. First operand 17689 states and 24188 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:24:22,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:24:22,771 INFO L93 Difference]: Finished difference Result 75125 states and 105113 transitions. [2021-12-17 16:24:22,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 16:24:22,771 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-12-17 16:24:22,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:24:22,875 INFO L225 Difference]: With dead ends: 75125 [2021-12-17 16:24:22,875 INFO L226 Difference]: Without dead ends: 67565 [2021-12-17 16:24:22,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-12-17 16:24:22,895 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 4404 mSDsluCounter, 1041 mSDsCounter, 0 mSdLazyCounter, 1151 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4404 SdHoareTripleChecker+Valid, 1689 SdHoareTripleChecker+Invalid, 1431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-17 16:24:22,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4404 Valid, 1689 Invalid, 1431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1151 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-17 16:24:22,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67565 states. [2021-12-17 16:24:28,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67565 to 17771. [2021-12-17 16:24:28,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17771 states, 17770 states have (on average 1.3671356218345525) internal successors, (24294), 17770 states have internal predecessors, (24294), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:24:28,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17771 states to 17771 states and 24294 transitions. [2021-12-17 16:24:28,569 INFO L78 Accepts]: Start accepts. Automaton has 17771 states and 24294 transitions. Word has length 88 [2021-12-17 16:24:28,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:24:28,569 INFO L470 AbstractCegarLoop]: Abstraction has 17771 states and 24294 transitions. [2021-12-17 16:24:28,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 6 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:24:28,569 INFO L276 IsEmpty]: Start isEmpty. Operand 17771 states and 24294 transitions. [2021-12-17 16:24:28,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-17 16:24:28,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:24:28,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:24:28,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-17 16:24:28,580 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:24:28,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:24:28,580 INFO L85 PathProgramCache]: Analyzing trace with hash 810523188, now seen corresponding path program 1 times [2021-12-17 16:24:28,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:24:28,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52174788] [2021-12-17 16:24:28,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:24:28,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:24:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:24:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:24:28,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:24:28,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52174788] [2021-12-17 16:24:28,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52174788] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:24:28,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:24:28,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:24:28,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15838423] [2021-12-17 16:24:28,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:24:28,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:24:28,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:24:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:24:28,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:24:28,618 INFO L87 Difference]: Start difference. First operand 17771 states and 24294 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:24:33,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:24:33,906 INFO L93 Difference]: Finished difference Result 25927 states and 35716 transitions. [2021-12-17 16:24:33,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:24:33,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-12-17 16:24:33,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:24:33,925 INFO L225 Difference]: With dead ends: 25927 [2021-12-17 16:24:33,925 INFO L226 Difference]: Without dead ends: 17743 [2021-12-17 16:24:33,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:24:33,935 INFO L933 BasicCegarLoop]: 1186 mSDtfsCounter, 442 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 442 SdHoareTripleChecker+Valid, 1890 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:24:33,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [442 Valid, 1890 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:24:33,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17743 states. [2021-12-17 16:24:39,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17743 to 17741. [2021-12-17 16:24:39,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17741 states, 17740 states have (on average 1.3552423900789177) internal successors, (24042), 17740 states have internal predecessors, (24042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:24:39,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17741 states to 17741 states and 24042 transitions. [2021-12-17 16:24:39,223 INFO L78 Accepts]: Start accepts. Automaton has 17741 states and 24042 transitions. Word has length 88 [2021-12-17 16:24:39,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:24:39,223 INFO L470 AbstractCegarLoop]: Abstraction has 17741 states and 24042 transitions. [2021-12-17 16:24:39,223 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:24:39,223 INFO L276 IsEmpty]: Start isEmpty. Operand 17741 states and 24042 transitions. [2021-12-17 16:24:39,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-17 16:24:39,234 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:24:39,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:24:39,234 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-17 16:24:39,234 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:24:39,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:24:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1367858198, now seen corresponding path program 1 times [2021-12-17 16:24:39,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:24:39,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185747180] [2021-12-17 16:24:39,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:24:39,235 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:24:39,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:24:39,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:24:39,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:24:39,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185747180] [2021-12-17 16:24:39,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185747180] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:24:39,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:24:39,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:24:39,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875950519] [2021-12-17 16:24:39,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:24:39,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:24:39,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:24:39,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:24:39,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:24:39,277 INFO L87 Difference]: Start difference. First operand 17741 states and 24042 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:24:44,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:24:44,465 INFO L93 Difference]: Finished difference Result 26696 states and 36456 transitions. [2021-12-17 16:24:44,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:24:44,465 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-12-17 16:24:44,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:24:44,486 INFO L225 Difference]: With dead ends: 26696 [2021-12-17 16:24:44,486 INFO L226 Difference]: Without dead ends: 17743 [2021-12-17 16:24:44,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:24:44,496 INFO L933 BasicCegarLoop]: 1205 mSDtfsCounter, 568 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 2114 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:24:44,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [568 Valid, 2114 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:24:44,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17743 states. [2021-12-17 16:24:49,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17743 to 17741. [2021-12-17 16:24:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17741 states, 17740 states have (on average 1.3464487034949266) internal successors, (23886), 17740 states have internal predecessors, (23886), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:24:49,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17741 states to 17741 states and 23886 transitions. [2021-12-17 16:24:49,755 INFO L78 Accepts]: Start accepts. Automaton has 17741 states and 23886 transitions. Word has length 89 [2021-12-17 16:24:49,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:24:49,756 INFO L470 AbstractCegarLoop]: Abstraction has 17741 states and 23886 transitions. [2021-12-17 16:24:49,756 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:24:49,756 INFO L276 IsEmpty]: Start isEmpty. Operand 17741 states and 23886 transitions. [2021-12-17 16:24:49,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-17 16:24:49,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:24:49,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:24:49,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-17 16:24:49,766 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:24:49,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:24:49,766 INFO L85 PathProgramCache]: Analyzing trace with hash -760296148, now seen corresponding path program 1 times [2021-12-17 16:24:49,766 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:24:49,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655062957] [2021-12-17 16:24:49,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:24:49,767 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:24:49,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:24:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:24:49,861 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:24:49,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655062957] [2021-12-17 16:24:49,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655062957] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:24:49,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:24:49,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:24:49,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92918682] [2021-12-17 16:24:49,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:24:49,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:24:49,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:24:49,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:24:49,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:24:49,864 INFO L87 Difference]: Start difference. First operand 17741 states and 23886 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:25:02,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:25:02,832 INFO L93 Difference]: Finished difference Result 37887 states and 51913 transitions. [2021-12-17 16:25:02,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:25:02,833 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-12-17 16:25:02,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:25:02,877 INFO L225 Difference]: With dead ends: 37887 [2021-12-17 16:25:02,877 INFO L226 Difference]: Without dead ends: 34081 [2021-12-17 16:25:02,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:25:02,888 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 4339 mSDsluCounter, 2465 mSDsCounter, 0 mSdLazyCounter, 2238 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4339 SdHoareTripleChecker+Valid, 3150 SdHoareTripleChecker+Invalid, 2357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 2238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:25:02,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4339 Valid, 3150 Invalid, 2357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 2238 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-17 16:25:02,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34081 states. [2021-12-17 16:25:08,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34081 to 17729. [2021-12-17 16:25:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17729 states, 17728 states have (on average 1.3460063176895307) internal successors, (23862), 17728 states have internal predecessors, (23862), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:25:08,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17729 states to 17729 states and 23862 transitions. [2021-12-17 16:25:08,405 INFO L78 Accepts]: Start accepts. Automaton has 17729 states and 23862 transitions. Word has length 89 [2021-12-17 16:25:08,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:25:08,405 INFO L470 AbstractCegarLoop]: Abstraction has 17729 states and 23862 transitions. [2021-12-17 16:25:08,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 8 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:25:08,405 INFO L276 IsEmpty]: Start isEmpty. Operand 17729 states and 23862 transitions. [2021-12-17 16:25:08,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-17 16:25:08,415 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:25:08,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:25:08,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-17 16:25:08,416 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:25:08,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:25:08,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1176831545, now seen corresponding path program 1 times [2021-12-17 16:25:08,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:25:08,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472120908] [2021-12-17 16:25:08,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:25:08,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:25:08,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:25:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:25:08,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:25:08,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472120908] [2021-12-17 16:25:08,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472120908] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:25:08,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:25:08,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:25:08,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284713981] [2021-12-17 16:25:08,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:25:08,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:25:08,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:25:08,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:25:08,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:25:08,451 INFO L87 Difference]: Start difference. First operand 17729 states and 23862 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:25:15,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:25:15,218 INFO L93 Difference]: Finished difference Result 31010 states and 42063 transitions. [2021-12-17 16:25:15,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:25:15,218 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-12-17 16:25:15,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:25:15,245 INFO L225 Difference]: With dead ends: 31010 [2021-12-17 16:25:15,245 INFO L226 Difference]: Without dead ends: 20953 [2021-12-17 16:25:15,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:25:15,257 INFO L933 BasicCegarLoop]: 738 mSDtfsCounter, 699 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:25:15,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [699 Valid, 954 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:25:15,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20953 states. [2021-12-17 16:25:20,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20953 to 16269. [2021-12-17 16:25:20,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16269 states, 16268 states have (on average 1.3466314236537988) internal successors, (21907), 16268 states have internal predecessors, (21907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:25:20,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16269 states to 16269 states and 21907 transitions. [2021-12-17 16:25:20,380 INFO L78 Accepts]: Start accepts. Automaton has 16269 states and 21907 transitions. Word has length 89 [2021-12-17 16:25:20,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:25:20,380 INFO L470 AbstractCegarLoop]: Abstraction has 16269 states and 21907 transitions. [2021-12-17 16:25:20,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:25:20,380 INFO L276 IsEmpty]: Start isEmpty. Operand 16269 states and 21907 transitions. [2021-12-17 16:25:20,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 16:25:20,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:25:20,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:25:20,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-17 16:25:20,390 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:25:20,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:25:20,391 INFO L85 PathProgramCache]: Analyzing trace with hash -69537233, now seen corresponding path program 1 times [2021-12-17 16:25:20,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:25:20,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655870044] [2021-12-17 16:25:20,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:25:20,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:25:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:25:20,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:25:20,426 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:25:20,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655870044] [2021-12-17 16:25:20,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655870044] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:25:20,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:25:20,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:25:20,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910326364] [2021-12-17 16:25:20,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:25:20,427 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:25:20,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:25:20,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:25:20,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:25:20,428 INFO L87 Difference]: Start difference. First operand 16269 states and 21907 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:25:26,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:25:26,986 INFO L93 Difference]: Finished difference Result 30260 states and 41006 transitions. [2021-12-17 16:25:26,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:25:26,986 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-12-17 16:25:26,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:25:27,009 INFO L225 Difference]: With dead ends: 30260 [2021-12-17 16:25:27,009 INFO L226 Difference]: Without dead ends: 20287 [2021-12-17 16:25:27,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:25:27,019 INFO L933 BasicCegarLoop]: 831 mSDtfsCounter, 704 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:25:27,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [704 Valid, 1120 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:25:27,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20287 states. [2021-12-17 16:25:31,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20287 to 15185. [2021-12-17 16:25:31,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15185 states, 15184 states have (on average 1.350105374077977) internal successors, (20500), 15184 states have internal predecessors, (20500), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:25:31,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15185 states to 15185 states and 20500 transitions. [2021-12-17 16:25:31,969 INFO L78 Accepts]: Start accepts. Automaton has 15185 states and 20500 transitions. Word has length 90 [2021-12-17 16:25:31,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:25:31,970 INFO L470 AbstractCegarLoop]: Abstraction has 15185 states and 20500 transitions. [2021-12-17 16:25:31,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:25:31,970 INFO L276 IsEmpty]: Start isEmpty. Operand 15185 states and 20500 transitions. [2021-12-17 16:25:31,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 16:25:31,978 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:25:31,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:25:31,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-17 16:25:31,979 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:25:31,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:25:31,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1022291375, now seen corresponding path program 1 times [2021-12-17 16:25:31,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:25:31,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508935979] [2021-12-17 16:25:31,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:25:31,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:25:31,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:25:32,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:25:32,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:25:32,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508935979] [2021-12-17 16:25:32,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508935979] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:25:32,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:25:32,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:25:32,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238246673] [2021-12-17 16:25:32,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:25:32,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:25:32,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:25:32,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:25:32,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:25:32,021 INFO L87 Difference]: Start difference. First operand 15185 states and 20500 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:25:36,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:25:36,945 INFO L93 Difference]: Finished difference Result 22623 states and 30780 transitions. [2021-12-17 16:25:36,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:25:36,945 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-12-17 16:25:36,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:25:36,965 INFO L225 Difference]: With dead ends: 22623 [2021-12-17 16:25:36,966 INFO L226 Difference]: Without dead ends: 15187 [2021-12-17 16:25:36,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:25:36,977 INFO L933 BasicCegarLoop]: 935 mSDtfsCounter, 390 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:25:36,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [390 Valid, 1555 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:25:36,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15187 states. [2021-12-17 16:25:41,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15187 to 15185. [2021-12-17 16:25:41,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15185 states, 15184 states have (on average 1.3373287671232876) internal successors, (20306), 15184 states have internal predecessors, (20306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:25:41,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15185 states to 15185 states and 20306 transitions. [2021-12-17 16:25:41,890 INFO L78 Accepts]: Start accepts. Automaton has 15185 states and 20306 transitions. Word has length 90 [2021-12-17 16:25:41,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:25:41,891 INFO L470 AbstractCegarLoop]: Abstraction has 15185 states and 20306 transitions. [2021-12-17 16:25:41,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:25:41,891 INFO L276 IsEmpty]: Start isEmpty. Operand 15185 states and 20306 transitions. [2021-12-17 16:25:41,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-17 16:25:41,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:25:41,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:25:41,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-17 16:25:41,901 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:25:41,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:25:41,901 INFO L85 PathProgramCache]: Analyzing trace with hash -152391114, now seen corresponding path program 1 times [2021-12-17 16:25:41,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:25:41,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111723292] [2021-12-17 16:25:41,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:25:41,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:25:41,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:25:42,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:25:42,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:25:42,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111723292] [2021-12-17 16:25:42,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111723292] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:25:42,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:25:42,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:25:42,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55165009] [2021-12-17 16:25:42,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:25:42,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:25:42,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:25:42,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:25:42,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:25:42,130 INFO L87 Difference]: Start difference. First operand 15185 states and 20306 transitions. Second operand has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:01,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:01,554 INFO L93 Difference]: Finished difference Result 47612 states and 65117 transitions. [2021-12-17 16:26:01,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-17 16:26:01,554 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 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 90 [2021-12-17 16:26:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:01,618 INFO L225 Difference]: With dead ends: 47612 [2021-12-17 16:26:01,618 INFO L226 Difference]: Without dead ends: 47176 [2021-12-17 16:26:01,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=226, Invalid=766, Unknown=0, NotChecked=0, Total=992 [2021-12-17 16:26:01,631 INFO L933 BasicCegarLoop]: 1121 mSDtfsCounter, 5578 mSDsluCounter, 6611 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5578 SdHoareTripleChecker+Valid, 7732 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:01,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5578 Valid, 7732 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-17 16:26:01,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47176 states. [2021-12-17 16:26:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47176 to 15183. [2021-12-17 16:26:07,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15183 states, 15182 states have (on average 1.337241470162034) internal successors, (20302), 15182 states have internal predecessors, (20302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:07,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15183 states to 15183 states and 20302 transitions. [2021-12-17 16:26:07,047 INFO L78 Accepts]: Start accepts. Automaton has 15183 states and 20302 transitions. Word has length 90 [2021-12-17 16:26:07,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:07,047 INFO L470 AbstractCegarLoop]: Abstraction has 15183 states and 20302 transitions. [2021-12-17 16:26:07,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.923076923076923) internal successors, (90), 13 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:07,047 INFO L276 IsEmpty]: Start isEmpty. Operand 15183 states and 20302 transitions. [2021-12-17 16:26:07,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-17 16:26:07,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:07,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:07,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-12-17 16:26:07,057 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:26:07,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:07,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1358793954, now seen corresponding path program 1 times [2021-12-17 16:26:07,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:07,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608252191] [2021-12-17 16:26:07,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:07,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:07,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:07,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:07,135 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:07,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608252191] [2021-12-17 16:26:07,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608252191] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:07,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:07,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:26:07,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074664105] [2021-12-17 16:26:07,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:07,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:26:07,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:07,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:26:07,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:26:07,137 INFO L87 Difference]: Start difference. First operand 15183 states and 20302 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:19,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:19,173 INFO L93 Difference]: Finished difference Result 33334 states and 45400 transitions. [2021-12-17 16:26:19,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:26:19,173 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-17 16:26:19,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:19,209 INFO L225 Difference]: With dead ends: 33334 [2021-12-17 16:26:19,209 INFO L226 Difference]: Without dead ends: 29590 [2021-12-17 16:26:19,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:26:19,218 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 3119 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 1504 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3119 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:19,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3119 Valid, 2180 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1504 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:26:19,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29590 states. [2021-12-17 16:26:24,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29590 to 15166. [2021-12-17 16:26:24,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15166 states, 15165 states have (on average 1.3370919881305638) internal successors, (20277), 15165 states have internal predecessors, (20277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:24,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15166 states to 15166 states and 20277 transitions. [2021-12-17 16:26:24,433 INFO L78 Accepts]: Start accepts. Automaton has 15166 states and 20277 transitions. Word has length 91 [2021-12-17 16:26:24,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:24,433 INFO L470 AbstractCegarLoop]: Abstraction has 15166 states and 20277 transitions. [2021-12-17 16:26:24,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 8 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:24,433 INFO L276 IsEmpty]: Start isEmpty. Operand 15166 states and 20277 transitions. [2021-12-17 16:26:24,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-17 16:26:24,443 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:24,443 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:24,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-12-17 16:26:24,443 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:26:24,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:24,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1074549196, now seen corresponding path program 1 times [2021-12-17 16:26:24,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:24,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643374930] [2021-12-17 16:26:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:24,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:24,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:24,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:24,472 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:24,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643374930] [2021-12-17 16:26:24,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643374930] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:24,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:24,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:26:24,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419144725] [2021-12-17 16:26:24,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:24,473 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:26:24,473 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:24,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:26:24,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:24,474 INFO L87 Difference]: Start difference. First operand 15166 states and 20277 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:31,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:31,097 INFO L93 Difference]: Finished difference Result 27233 states and 36802 transitions. [2021-12-17 16:26:31,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:26:31,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 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 91 [2021-12-17 16:26:31,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:31,118 INFO L225 Difference]: With dead ends: 27233 [2021-12-17 16:26:31,119 INFO L226 Difference]: Without dead ends: 18096 [2021-12-17 16:26:31,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:26:31,127 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 616 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:31,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 791 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:26:31,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18096 states. [2021-12-17 16:26:36,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18096 to 14248. [2021-12-17 16:26:36,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14248 states, 14247 states have (on average 1.3415455885449568) internal successors, (19113), 14247 states have internal predecessors, (19113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14248 states to 14248 states and 19113 transitions. [2021-12-17 16:26:36,118 INFO L78 Accepts]: Start accepts. Automaton has 14248 states and 19113 transitions. Word has length 91 [2021-12-17 16:26:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:26:36,118 INFO L470 AbstractCegarLoop]: Abstraction has 14248 states and 19113 transitions. [2021-12-17 16:26:36,118 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 14248 states and 19113 transitions. [2021-12-17 16:26:36,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-17 16:26:36,128 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:26:36,128 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:26:36,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-12-17 16:26:36,129 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:26:36,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:26:36,129 INFO L85 PathProgramCache]: Analyzing trace with hash -1553580968, now seen corresponding path program 1 times [2021-12-17 16:26:36,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:26:36,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140016200] [2021-12-17 16:26:36,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:26:36,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:26:36,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:26:36,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:26:36,342 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:26:36,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140016200] [2021-12-17 16:26:36,342 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140016200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:26:36,342 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:26:36,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:26:36,342 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532138956] [2021-12-17 16:26:36,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:26:36,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:26:36,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:26:36,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:26:36,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:26:36,343 INFO L87 Difference]: Start difference. First operand 14248 states and 19113 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:26:54,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:26:54,621 INFO L93 Difference]: Finished difference Result 43923 states and 59989 transitions. [2021-12-17 16:26:54,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 16:26:54,622 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-12-17 16:26:54,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:26:54,679 INFO L225 Difference]: With dead ends: 43923 [2021-12-17 16:26:54,679 INFO L226 Difference]: Without dead ends: 42986 [2021-12-17 16:26:54,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:26:54,689 INFO L933 BasicCegarLoop]: 1059 mSDtfsCounter, 4872 mSDsluCounter, 5019 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4872 SdHoareTripleChecker+Valid, 6078 SdHoareTripleChecker+Invalid, 975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:26:54,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4872 Valid, 6078 Invalid, 975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:26:54,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42986 states. [2021-12-17 16:27:00,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42986 to 14204. [2021-12-17 16:27:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14204 states, 14203 states have (on average 1.3419700063366895) internal successors, (19060), 14203 states have internal predecessors, (19060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:00,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14204 states to 14204 states and 19060 transitions. [2021-12-17 16:27:00,074 INFO L78 Accepts]: Start accepts. Automaton has 14204 states and 19060 transitions. Word has length 92 [2021-12-17 16:27:00,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:27:00,074 INFO L470 AbstractCegarLoop]: Abstraction has 14204 states and 19060 transitions. [2021-12-17 16:27:00,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 13 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand 14204 states and 19060 transitions. [2021-12-17 16:27:00,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-17 16:27:00,083 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:27:00,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:27:00,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-12-17 16:27:00,083 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:27:00,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:27:00,084 INFO L85 PathProgramCache]: Analyzing trace with hash -2001266238, now seen corresponding path program 1 times [2021-12-17 16:27:00,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:27:00,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548621596] [2021-12-17 16:27:00,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:27:00,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:27:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:27:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:00,315 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:27:00,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548621596] [2021-12-17 16:27:00,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548621596] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:27:00,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:27:00,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:27:00,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820092377] [2021-12-17 16:27:00,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:27:00,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:27:00,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:27:00,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:27:00,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:27:00,316 INFO L87 Difference]: Start difference. First operand 14204 states and 19060 transitions. Second operand has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:11,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:27:11,306 INFO L93 Difference]: Finished difference Result 25715 states and 34906 transitions. [2021-12-17 16:27:11,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 16:27:11,306 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 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 92 [2021-12-17 16:27:11,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:27:11,338 INFO L225 Difference]: With dead ends: 25715 [2021-12-17 16:27:11,338 INFO L226 Difference]: Without dead ends: 24796 [2021-12-17 16:27:11,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2021-12-17 16:27:11,346 INFO L933 BasicCegarLoop]: 891 mSDtfsCounter, 4083 mSDsluCounter, 3919 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4083 SdHoareTripleChecker+Valid, 4810 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:27:11,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4083 Valid, 4810 Invalid, 860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:27:11,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24796 states. [2021-12-17 16:27:16,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24796 to 14133. [2021-12-17 16:27:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14133 states, 14132 states have (on average 1.3421313331446363) internal successors, (18967), 14132 states have internal predecessors, (18967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:16,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14133 states to 14133 states and 18967 transitions. [2021-12-17 16:27:16,725 INFO L78 Accepts]: Start accepts. Automaton has 14133 states and 18967 transitions. Word has length 92 [2021-12-17 16:27:16,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:27:16,725 INFO L470 AbstractCegarLoop]: Abstraction has 14133 states and 18967 transitions. [2021-12-17 16:27:16,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.666666666666667) internal successors, (92), 12 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:16,725 INFO L276 IsEmpty]: Start isEmpty. Operand 14133 states and 18967 transitions. [2021-12-17 16:27:16,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:27:16,736 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:27:16,737 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:27:16,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-12-17 16:27:16,737 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:27:16,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:27:16,737 INFO L85 PathProgramCache]: Analyzing trace with hash -88028152, now seen corresponding path program 1 times [2021-12-17 16:27:16,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:27:16,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528683850] [2021-12-17 16:27:16,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:27:16,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:27:16,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:27:16,881 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:16,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:27:16,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528683850] [2021-12-17 16:27:16,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528683850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:27:16,881 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:27:16,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:27:16,881 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396402986] [2021-12-17 16:27:16,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:27:16,882 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:27:16,882 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:27:16,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:27:16,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:27:16,882 INFO L87 Difference]: Start difference. First operand 14133 states and 18967 transitions. Second operand has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:48,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:27:48,604 INFO L93 Difference]: Finished difference Result 64889 states and 88182 transitions. [2021-12-17 16:27:48,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-17 16:27:48,604 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:27:48,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:27:48,694 INFO L225 Difference]: With dead ends: 64889 [2021-12-17 16:27:48,694 INFO L226 Difference]: Without dead ends: 63827 [2021-12-17 16:27:48,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 500 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=457, Invalid=1349, Unknown=0, NotChecked=0, Total=1806 [2021-12-17 16:27:48,711 INFO L933 BasicCegarLoop]: 838 mSDtfsCounter, 6465 mSDsluCounter, 2948 mSDsCounter, 0 mSdLazyCounter, 2526 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6465 SdHoareTripleChecker+Valid, 3786 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 2526 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:27:48,711 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6465 Valid, 3786 Invalid, 2909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 2526 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-17 16:27:48,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63827 states. [2021-12-17 16:27:54,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63827 to 14149. [2021-12-17 16:27:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14149 states, 14148 states have (on average 1.341744416171897) internal successors, (18983), 14148 states have internal predecessors, (18983), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:54,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14149 states to 14149 states and 18983 transitions. [2021-12-17 16:27:54,563 INFO L78 Accepts]: Start accepts. Automaton has 14149 states and 18983 transitions. Word has length 95 [2021-12-17 16:27:54,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:27:54,564 INFO L470 AbstractCegarLoop]: Abstraction has 14149 states and 18983 transitions. [2021-12-17 16:27:54,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.916666666666667) internal successors, (95), 11 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:27:54,564 INFO L276 IsEmpty]: Start isEmpty. Operand 14149 states and 18983 transitions. [2021-12-17 16:27:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-17 16:27:54,574 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:27:54,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:27:54,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-12-17 16:27:54,574 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:27:54,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:27:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash 423522571, now seen corresponding path program 1 times [2021-12-17 16:27:54,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:27:54,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604290378] [2021-12-17 16:27:54,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:27:54,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:27:54,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:27:54,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:27:54,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:27:54,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604290378] [2021-12-17 16:27:54,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604290378] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:27:54,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:27:54,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:27:54,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688170565] [2021-12-17 16:27:54,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:27:54,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:27:54,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:27:54,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:27:54,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:27:54,643 INFO L87 Difference]: Start difference. First operand 14149 states and 18983 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:28:03,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:28:03,422 INFO L93 Difference]: Finished difference Result 19973 states and 26858 transitions. [2021-12-17 16:28:03,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:28:03,423 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 95 [2021-12-17 16:28:03,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:28:03,446 INFO L225 Difference]: With dead ends: 19973 [2021-12-17 16:28:03,446 INFO L226 Difference]: Without dead ends: 19537 [2021-12-17 16:28:03,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:28:03,452 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 1792 mSDsluCounter, 1720 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 1649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:28:03,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1792 Valid, 2335 Invalid, 1649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:28:03,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19537 states. [2021-12-17 16:28:08,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19537 to 14149. [2021-12-17 16:28:08,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14149 states, 14148 states have (on average 1.3416737348035057) internal successors, (18982), 14148 states have internal predecessors, (18982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:28:08,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14149 states to 14149 states and 18982 transitions. [2021-12-17 16:28:08,961 INFO L78 Accepts]: Start accepts. Automaton has 14149 states and 18982 transitions. Word has length 95 [2021-12-17 16:28:08,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:28:08,962 INFO L470 AbstractCegarLoop]: Abstraction has 14149 states and 18982 transitions. [2021-12-17 16:28:08,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 8 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:28:08,962 INFO L276 IsEmpty]: Start isEmpty. Operand 14149 states and 18982 transitions. [2021-12-17 16:28:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 16:28:08,973 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:28:08,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:28:08,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-12-17 16:28:08,974 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:28:08,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:28:08,974 INFO L85 PathProgramCache]: Analyzing trace with hash 2097927423, now seen corresponding path program 1 times [2021-12-17 16:28:08,974 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:28:08,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418726236] [2021-12-17 16:28:08,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:28:08,974 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:28:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:28:09,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:28:09,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:28:09,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418726236] [2021-12-17 16:28:09,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418726236] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:28:09,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:28:09,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:28:09,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584991595] [2021-12-17 16:28:09,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:28:09,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:28:09,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:28:09,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:28:09,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:28:09,009 INFO L87 Difference]: Start difference. First operand 14149 states and 18982 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:28:14,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:28:14,494 INFO L93 Difference]: Finished difference Result 21735 states and 29360 transitions. [2021-12-17 16:28:14,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:28:14,494 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-12-17 16:28:14,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:28:14,509 INFO L225 Difference]: With dead ends: 21735 [2021-12-17 16:28:14,509 INFO L226 Difference]: Without dead ends: 14151 [2021-12-17 16:28:14,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:28:14,517 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 418 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:28:14,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 1473 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:28:14,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14151 states. [2021-12-17 16:28:20,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14151 to 14149. [2021-12-17 16:28:20,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14149 states, 14148 states have (on average 1.3322024314390726) internal successors, (18848), 14148 states have internal predecessors, (18848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:28:20,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14149 states to 14149 states and 18848 transitions. [2021-12-17 16:28:20,049 INFO L78 Accepts]: Start accepts. Automaton has 14149 states and 18848 transitions. Word has length 96 [2021-12-17 16:28:20,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:28:20,049 INFO L470 AbstractCegarLoop]: Abstraction has 14149 states and 18848 transitions. [2021-12-17 16:28:20,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:28:20,050 INFO L276 IsEmpty]: Start isEmpty. Operand 14149 states and 18848 transitions. [2021-12-17 16:28:20,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 16:28:20,061 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:28:20,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:28:20,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-12-17 16:28:20,061 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:28:20,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:28:20,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1376565801, now seen corresponding path program 1 times [2021-12-17 16:28:20,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:28:20,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258512618] [2021-12-17 16:28:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:28:20,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:28:20,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:28:20,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:28:20,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:28:20,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258512618] [2021-12-17 16:28:20,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258512618] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:28:20,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:28:20,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:28:20,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518080612] [2021-12-17 16:28:20,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:28:20,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:28:20,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:28:20,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:28:20,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:28:20,132 INFO L87 Difference]: Start difference. First operand 14149 states and 18848 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:28:28,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:28:28,558 INFO L93 Difference]: Finished difference Result 19106 states and 25471 transitions. [2021-12-17 16:28:28,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:28:28,558 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-12-17 16:28:28,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:28:28,580 INFO L225 Difference]: With dead ends: 19106 [2021-12-17 16:28:28,581 INFO L226 Difference]: Without dead ends: 18957 [2021-12-17 16:28:28,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:28:28,586 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 2936 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 1404 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2936 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 1517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:28:28,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2936 Valid, 2125 Invalid, 1517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1404 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:28:28,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18957 states. [2021-12-17 16:28:34,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18957 to 14149. [2021-12-17 16:28:34,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14149 states, 14148 states have (on average 1.3321317500706813) internal successors, (18847), 14148 states have internal predecessors, (18847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:28:34,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14149 states to 14149 states and 18847 transitions. [2021-12-17 16:28:34,214 INFO L78 Accepts]: Start accepts. Automaton has 14149 states and 18847 transitions. Word has length 96 [2021-12-17 16:28:34,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:28:34,214 INFO L470 AbstractCegarLoop]: Abstraction has 14149 states and 18847 transitions. [2021-12-17 16:28:34,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:28:34,214 INFO L276 IsEmpty]: Start isEmpty. Operand 14149 states and 18847 transitions. [2021-12-17 16:28:34,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 16:28:34,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:28:34,225 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:28:34,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-12-17 16:28:34,225 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:28:34,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:28:34,225 INFO L85 PathProgramCache]: Analyzing trace with hash 218722425, now seen corresponding path program 1 times [2021-12-17 16:28:34,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:28:34,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155554] [2021-12-17 16:28:34,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:28:34,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:28:34,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:28:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:28:34,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:28:34,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155554] [2021-12-17 16:28:34,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155554] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:28:34,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:28:34,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:28:34,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803050050] [2021-12-17 16:28:34,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:28:34,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:28:34,293 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:28:34,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:28:34,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:28:34,294 INFO L87 Difference]: Start difference. First operand 14149 states and 18847 transitions. Second operand has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:28:44,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:28:44,798 INFO L93 Difference]: Finished difference Result 24192 states and 32436 transitions. [2021-12-17 16:28:44,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:28:44,798 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 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 96 [2021-12-17 16:28:44,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:28:44,823 INFO L225 Difference]: With dead ends: 24192 [2021-12-17 16:28:44,823 INFO L226 Difference]: Without dead ends: 23130 [2021-12-17 16:28:44,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=296, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:28:44,829 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 3666 mSDsluCounter, 1778 mSDsCounter, 0 mSdLazyCounter, 1635 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3666 SdHoareTripleChecker+Valid, 2421 SdHoareTripleChecker+Invalid, 1740 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-17 16:28:44,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3666 Valid, 2421 Invalid, 1740 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1635 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-17 16:28:44,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23130 states. [2021-12-17 16:28:50,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23130 to 14075. [2021-12-17 16:28:50,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14075 states, 14074 states have (on average 1.3328122779593576) internal successors, (18758), 14074 states have internal predecessors, (18758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:28:50,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14075 states to 14075 states and 18758 transitions. [2021-12-17 16:28:50,473 INFO L78 Accepts]: Start accepts. Automaton has 14075 states and 18758 transitions. Word has length 96 [2021-12-17 16:28:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:28:50,473 INFO L470 AbstractCegarLoop]: Abstraction has 14075 states and 18758 transitions. [2021-12-17 16:28:50,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.666666666666666) internal successors, (96), 8 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:28:50,473 INFO L276 IsEmpty]: Start isEmpty. Operand 14075 states and 18758 transitions. [2021-12-17 16:28:50,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-12-17 16:28:50,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:28:50,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:28:50,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-12-17 16:28:50,484 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:28:50,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:28:50,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1549401152, now seen corresponding path program 1 times [2021-12-17 16:28:50,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:28:50,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731526558] [2021-12-17 16:28:50,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:28:50,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:28:50,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:28:50,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:28:50,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:28:50,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731526558] [2021-12-17 16:28:50,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731526558] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:28:50,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:28:50,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:28:50,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127197738] [2021-12-17 16:28:50,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:28:50,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:28:50,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:28:50,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:28:50,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:28:50,521 INFO L87 Difference]: Start difference. First operand 14075 states and 18758 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:28:57,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:28:57,868 INFO L93 Difference]: Finished difference Result 25896 states and 34802 transitions. [2021-12-17 16:28:57,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:28:57,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 97 [2021-12-17 16:28:57,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:28:57,887 INFO L225 Difference]: With dead ends: 25896 [2021-12-17 16:28:57,887 INFO L226 Difference]: Without dead ends: 17261 [2021-12-17 16:28:57,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:28:57,894 INFO L933 BasicCegarLoop]: 668 mSDtfsCounter, 613 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:28:57,894 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 879 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:28:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17261 states. [2021-12-17 16:29:03,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17261 to 13418. [2021-12-17 16:29:03,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13418 states, 13417 states have (on average 1.332712230752031) internal successors, (17881), 13417 states have internal predecessors, (17881), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:03,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13418 states to 13418 states and 17881 transitions. [2021-12-17 16:29:03,306 INFO L78 Accepts]: Start accepts. Automaton has 13418 states and 17881 transitions. Word has length 97 [2021-12-17 16:29:03,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:03,306 INFO L470 AbstractCegarLoop]: Abstraction has 13418 states and 17881 transitions. [2021-12-17 16:29:03,306 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 13418 states and 17881 transitions. [2021-12-17 16:29:03,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-17 16:29:03,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:03,316 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:03,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-12-17 16:29:03,316 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:29:03,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:03,317 INFO L85 PathProgramCache]: Analyzing trace with hash 682908931, now seen corresponding path program 1 times [2021-12-17 16:29:03,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:03,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024254328] [2021-12-17 16:29:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:03,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:03,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:03,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:03,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024254328] [2021-12-17 16:29:03,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024254328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:03,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:03,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 16:29:03,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383400634] [2021-12-17 16:29:03,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:03,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 16:29:03,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:03,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 16:29:03,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-17 16:29:03,580 INFO L87 Difference]: Start difference. First operand 13418 states and 17881 transitions. Second operand has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:13,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:13,901 INFO L93 Difference]: Finished difference Result 21157 states and 28452 transitions. [2021-12-17 16:29:13,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-17 16:29:13,902 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2021-12-17 16:29:13,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:13,926 INFO L225 Difference]: With dead ends: 21157 [2021-12-17 16:29:13,926 INFO L226 Difference]: Without dead ends: 20948 [2021-12-17 16:29:13,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=146, Invalid=360, Unknown=0, NotChecked=0, Total=506 [2021-12-17 16:29:13,931 INFO L933 BasicCegarLoop]: 866 mSDtfsCounter, 3904 mSDsluCounter, 3747 mSDsCounter, 0 mSdLazyCounter, 779 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3904 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:13,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3904 Valid, 4613 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 779 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-17 16:29:13,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20948 states. [2021-12-17 16:29:19,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20948 to 13357. [2021-12-17 16:29:19,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13357 states, 13356 states have (on average 1.3329589697514226) internal successors, (17803), 13356 states have internal predecessors, (17803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:19,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13357 states to 13357 states and 17803 transitions. [2021-12-17 16:29:19,468 INFO L78 Accepts]: Start accepts. Automaton has 13357 states and 17803 transitions. Word has length 98 [2021-12-17 16:29:19,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:19,468 INFO L470 AbstractCegarLoop]: Abstraction has 13357 states and 17803 transitions. [2021-12-17 16:29:19,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.166666666666666) internal successors, (98), 12 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:19,468 INFO L276 IsEmpty]: Start isEmpty. Operand 13357 states and 17803 transitions. [2021-12-17 16:29:19,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-17 16:29:19,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:19,483 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:19,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-12-17 16:29:19,484 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:29:19,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:19,484 INFO L85 PathProgramCache]: Analyzing trace with hash 866442340, now seen corresponding path program 1 times [2021-12-17 16:29:19,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:19,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340491157] [2021-12-17 16:29:19,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:19,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:19,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:19,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:19,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:19,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340491157] [2021-12-17 16:29:19,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340491157] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:19,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:19,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 16:29:19,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075614518] [2021-12-17 16:29:19,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:19,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:29:19,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:19,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:29:19,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:29:19,534 INFO L87 Difference]: Start difference. First operand 13357 states and 17803 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:37,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:29:37,113 INFO L93 Difference]: Finished difference Result 48253 states and 66139 transitions. [2021-12-17 16:29:37,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 16:29:37,114 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 104 [2021-12-17 16:29:37,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:29:37,160 INFO L225 Difference]: With dead ends: 48253 [2021-12-17 16:29:37,161 INFO L226 Difference]: Without dead ends: 37937 [2021-12-17 16:29:37,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-17 16:29:37,175 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 3434 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3434 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:29:37,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3434 Valid, 2222 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:29:37,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37937 states. [2021-12-17 16:29:48,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37937 to 23671. [2021-12-17 16:29:48,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23671 states, 23670 states have (on average 1.341867342627799) internal successors, (31762), 23670 states have internal predecessors, (31762), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:48,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23671 states to 23671 states and 31762 transitions. [2021-12-17 16:29:48,182 INFO L78 Accepts]: Start accepts. Automaton has 23671 states and 31762 transitions. Word has length 104 [2021-12-17 16:29:48,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:29:48,183 INFO L470 AbstractCegarLoop]: Abstraction has 23671 states and 31762 transitions. [2021-12-17 16:29:48,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 7 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:29:48,183 INFO L276 IsEmpty]: Start isEmpty. Operand 23671 states and 31762 transitions. [2021-12-17 16:29:48,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-17 16:29:48,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:29:48,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:29:48,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-12-17 16:29:48,206 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:29:48,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:29:48,207 INFO L85 PathProgramCache]: Analyzing trace with hash 372270845, now seen corresponding path program 1 times [2021-12-17 16:29:48,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:29:48,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369310055] [2021-12-17 16:29:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:29:48,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:29:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:29:48,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:29:48,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:29:48,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369310055] [2021-12-17 16:29:48,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369310055] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:29:48,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:29:48,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 16:29:48,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303221239] [2021-12-17 16:29:48,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:29:48,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 16:29:48,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:29:48,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 16:29:48,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:29:48,272 INFO L87 Difference]: Start difference. First operand 23671 states and 31762 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:01,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:30:01,943 INFO L93 Difference]: Finished difference Result 30457 states and 40798 transitions. [2021-12-17 16:30:01,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 16:30:01,943 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-12-17 16:30:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:30:01,982 INFO L225 Difference]: With dead ends: 30457 [2021-12-17 16:30:01,982 INFO L226 Difference]: Without dead ends: 28481 [2021-12-17 16:30:01,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:30:01,995 INFO L933 BasicCegarLoop]: 1024 mSDtfsCounter, 2051 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:30:01,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2051 Valid, 2072 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:30:02,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28481 states. [2021-12-17 16:30:15,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28481 to 27521. [2021-12-17 16:30:15,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27521 states, 27520 states have (on average 1.3418968023255815) internal successors, (36929), 27520 states have internal predecessors, (36929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27521 states to 27521 states and 36929 transitions. [2021-12-17 16:30:15,593 INFO L78 Accepts]: Start accepts. Automaton has 27521 states and 36929 transitions. Word has length 105 [2021-12-17 16:30:15,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:30:15,593 INFO L470 AbstractCegarLoop]: Abstraction has 27521 states and 36929 transitions. [2021-12-17 16:30:15,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 7 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:30:15,593 INFO L276 IsEmpty]: Start isEmpty. Operand 27521 states and 36929 transitions. [2021-12-17 16:30:15,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-12-17 16:30:15,615 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:30:15,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:30:15,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-12-17 16:30:15,616 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-17 16:30:15,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:30:15,616 INFO L85 PathProgramCache]: Analyzing trace with hash 573242979, now seen corresponding path program 1 times [2021-12-17 16:30:15,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:30:15,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137935495] [2021-12-17 16:30:15,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:30:15,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:30:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:30:15,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:30:15,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:30:15,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137935495] [2021-12-17 16:30:15,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137935495] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:30:15,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:30:15,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:30:15,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568514876] [2021-12-17 16:30:15,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:30:15,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:30:15,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:30:15,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:30:15,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:30:15,653 INFO L87 Difference]: Start difference. First operand 27521 states and 36929 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Killed by 15