./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash be1fcaa299b4a26d5c3c0d4f857b13329cbb7ec0505911e54bd9d27d2647b4d4 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 13:42:19,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 13:42:19,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 13:42:19,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 13:42:19,311 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 13:42:19,312 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 13:42:19,313 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 13:42:19,327 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 13:42:19,329 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 13:42:19,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 13:42:19,330 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 13:42:19,331 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 13:42:19,331 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 13:42:19,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 13:42:19,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 13:42:19,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 13:42:19,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 13:42:19,335 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 13:42:19,336 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 13:42:19,337 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 13:42:19,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 13:42:19,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 13:42:19,340 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 13:42:19,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 13:42:19,342 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 13:42:19,342 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 13:42:19,343 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 13:42:19,343 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 13:42:19,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 13:42:19,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 13:42:19,345 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 13:42:19,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 13:42:19,347 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 13:42:19,348 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 13:42:19,349 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 13:42:19,349 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 13:42:19,349 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 13:42:19,349 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 13:42:19,350 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 13:42:19,350 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 13:42:19,351 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 13:42:19,352 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-21 13:42:19,366 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 13:42:19,367 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 13:42:19,367 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 13:42:19,367 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 13:42:19,368 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 13:42:19,368 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 13:42:19,368 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 13:42:19,369 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 13:42:19,369 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 13:42:19,369 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 13:42:19,369 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-21 13:42:19,370 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 13:42:19,370 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-21 13:42:19,370 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 13:42:19,370 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 13:42:19,370 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 13:42:19,371 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 13:42:19,371 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-21 13:42:19,371 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 13:42:19,371 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 13:42:19,371 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 13:42:19,372 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 13:42:19,372 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 13:42:19,372 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 13:42:19,372 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:42:19,373 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 13:42:19,373 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 13:42:19,373 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 13:42:19,373 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 13:42:19,373 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 13:42:19,373 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 13:42:19,374 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 13:42:19,374 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 13:42:19,374 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 13:42:19,374 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> be1fcaa299b4a26d5c3c0d4f857b13329cbb7ec0505911e54bd9d27d2647b4d4 [2021-12-21 13:42:19,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 13:42:19,567 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 13:42:19,569 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 13:42:19,570 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 13:42:19,570 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 13:42:19,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-21 13:42:19,626 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57032820/7090d0d00095478f96cae00e9fdcd346/FLAG05603469a [2021-12-21 13:42:20,101 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 13:42:20,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-21 13:42:20,131 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57032820/7090d0d00095478f96cae00e9fdcd346/FLAG05603469a [2021-12-21 13:42:20,359 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f57032820/7090d0d00095478f96cae00e9fdcd346 [2021-12-21 13:42:20,361 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 13:42:20,362 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 13:42:20,362 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 13:42:20,363 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 13:42:20,365 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 13:42:20,365 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:42:20" (1/1) ... [2021-12-21 13:42:20,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b45179f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:20, skipping insertion in model container [2021-12-21 13:42:20,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 01:42:20" (1/1) ... [2021-12-21 13:42:20,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 13:42:20,457 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 13:42:20,634 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7172,7185] [2021-12-21 13:42:20,662 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[10914,10927] [2021-12-21 13:42:20,698 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[17944,17957] [2021-12-21 13:42:20,726 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24017,24030] [2021-12-21 13:42:20,776 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42645,42658] [2021-12-21 13:42:20,841 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[64626,64639] [2021-12-21 13:42:20,948 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:42:20,956 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 13:42:20,987 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[7172,7185] [2021-12-21 13:42:20,997 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[10914,10927] [2021-12-21 13:42:21,015 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[17944,17957] [2021-12-21 13:42:21,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[24017,24030] [2021-12-21 13:42:21,089 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[42645,42658] [2021-12-21 13:42:21,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[64626,64639] [2021-12-21 13:42:21,222 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 13:42:21,234 INFO L208 MainTranslator]: Completed translation [2021-12-21 13:42:21,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:21 WrapperNode [2021-12-21 13:42:21,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 13:42:21,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 13:42:21,236 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 13:42:21,236 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 13:42:21,240 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:21" (1/1) ... [2021-12-21 13:42:21,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:21" (1/1) ... [2021-12-21 13:42:21,342 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 5288 [2021-12-21 13:42:21,342 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 13:42:21,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 13:42:21,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 13:42:21,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 13:42:21,350 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:21" (1/1) ... [2021-12-21 13:42:21,350 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:21" (1/1) ... [2021-12-21 13:42:21,362 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:21" (1/1) ... [2021-12-21 13:42:21,363 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:21" (1/1) ... [2021-12-21 13:42:21,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:21" (1/1) ... [2021-12-21 13:42:21,412 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:21" (1/1) ... [2021-12-21 13:42:21,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:21" (1/1) ... [2021-12-21 13:42:21,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 13:42:21,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 13:42:21,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 13:42:21,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 13:42:21,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:21" (1/1) ... [2021-12-21 13:42:21,450 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 13:42:21,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 13:42:21,471 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) [2021-12-21 13:42:21,475 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 [2021-12-21 13:42:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 13:42:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 13:42:21,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 13:42:21,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 13:42:21,710 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 13:42:21,712 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 13:42:23,221 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 13:42:23,233 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 13:42:23,233 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 13:42:23,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:42:23 BoogieIcfgContainer [2021-12-21 13:42:23,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 13:42:23,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 13:42:23,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 13:42:23,239 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 13:42:23,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 01:42:20" (1/3) ... [2021-12-21 13:42:23,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6c6742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:42:23, skipping insertion in model container [2021-12-21 13:42:23,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 01:42:21" (2/3) ... [2021-12-21 13:42:23,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a6c6742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 01:42:23, skipping insertion in model container [2021-12-21 13:42:23,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 01:42:23" (3/3) ... [2021-12-21 13:42:23,241 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.3.2.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-12-21 13:42:23,244 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 13:42:23,244 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-12-21 13:42:23,276 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 13:42:23,280 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 [2021-12-21 13:42:23,280 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-12-21 13:42:23,298 INFO L276 IsEmpty]: Start isEmpty. Operand has 1121 states, 1114 states have (on average 1.8285457809694794) internal successors, (2037), 1120 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:23,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-21 13:42:23,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:23,312 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] [2021-12-21 13:42:23,313 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)] === [2021-12-21 13:42:23,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1703299446, now seen corresponding path program 1 times [2021-12-21 13:42:23,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:23,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028239897] [2021-12-21 13:42:23,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:23,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:23,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:23,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:23,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:23,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028239897] [2021-12-21 13:42:23,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028239897] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:23,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:23,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:42:23,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110825073] [2021-12-21 13:42:23,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:23,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:42:23,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:23,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:42:23,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:42:23,653 INFO L87 Difference]: Start difference. First operand has 1121 states, 1114 states have (on average 1.8285457809694794) internal successors, (2037), 1120 states have internal predecessors, (2037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:24,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:24,610 INFO L93 Difference]: Finished difference Result 2061 states and 3646 transitions. [2021-12-21 13:42:24,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:42:24,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-12-21 13:42:24,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:24,628 INFO L225 Difference]: With dead ends: 2061 [2021-12-21 13:42:24,628 INFO L226 Difference]: Without dead ends: 1339 [2021-12-21 13:42:24,637 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 [2021-12-21 13:42:24,641 INFO L933 BasicCegarLoop]: 1064 mSDtfsCounter, 6427 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 1000 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6427 SdHoareTripleChecker+Valid, 1421 SdHoareTripleChecker+Invalid, 1059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 1000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:24,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6427 Valid, 1421 Invalid, 1059 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 1000 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:42:24,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2021-12-21 13:42:24,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1327. [2021-12-21 13:42:24,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1327 states, 1321 states have (on average 1.336109008327025) internal successors, (1765), 1326 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:24,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1327 states to 1327 states and 1765 transitions. [2021-12-21 13:42:24,735 INFO L78 Accepts]: Start accepts. Automaton has 1327 states and 1765 transitions. Word has length 51 [2021-12-21 13:42:24,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:24,736 INFO L470 AbstractCegarLoop]: Abstraction has 1327 states and 1765 transitions. [2021-12-21 13:42:24,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:24,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1327 states and 1765 transitions. [2021-12-21 13:42:24,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-21 13:42:24,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:24,738 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] [2021-12-21 13:42:24,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 13:42:24,738 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)] === [2021-12-21 13:42:24,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:24,739 INFO L85 PathProgramCache]: Analyzing trace with hash 199718681, now seen corresponding path program 1 times [2021-12-21 13:42:24,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:24,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026816478] [2021-12-21 13:42:24,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:24,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:24,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:24,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:24,799 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:24,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026816478] [2021-12-21 13:42:24,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026816478] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:24,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:24,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:42:24,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118043050] [2021-12-21 13:42:24,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:24,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:42:24,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:24,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:42:24,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:42:24,801 INFO L87 Difference]: Start difference. First operand 1327 states and 1765 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:25,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:25,482 INFO L93 Difference]: Finished difference Result 2510 states and 3426 transitions. [2021-12-21 13:42:25,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:42:25,483 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-12-21 13:42:25,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:25,489 INFO L225 Difference]: With dead ends: 2510 [2021-12-21 13:42:25,489 INFO L226 Difference]: Without dead ends: 1697 [2021-12-21 13:42:25,490 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 [2021-12-21 13:42:25,491 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 4270 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4270 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 861 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:25,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4270 Valid, 820 Invalid, 861 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-21 13:42:25,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1697 states. [2021-12-21 13:42:25,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1697 to 1687. [2021-12-21 13:42:25,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1687 states, 1681 states have (on average 1.3652587745389648) internal successors, (2295), 1686 states have internal predecessors, (2295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:25,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1687 states to 1687 states and 2295 transitions. [2021-12-21 13:42:25,549 INFO L78 Accepts]: Start accepts. Automaton has 1687 states and 2295 transitions. Word has length 51 [2021-12-21 13:42:25,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:25,550 INFO L470 AbstractCegarLoop]: Abstraction has 1687 states and 2295 transitions. [2021-12-21 13:42:25,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:25,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1687 states and 2295 transitions. [2021-12-21 13:42:25,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-21 13:42:25,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:25,558 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] [2021-12-21 13:42:25,558 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 13:42:25,559 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:25,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:25,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1084504014, now seen corresponding path program 1 times [2021-12-21 13:42:25,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:25,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654569015] [2021-12-21 13:42:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:25,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:25,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:25,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:25,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654569015] [2021-12-21 13:42:25,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654569015] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:25,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:25,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 13:42:25,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007341379] [2021-12-21 13:42:25,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:25,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:42:25,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:25,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:42:25,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:42:25,660 INFO L87 Difference]: Start difference. First operand 1687 states and 2295 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:26,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:26,311 INFO L93 Difference]: Finished difference Result 3362 states and 4642 transitions. [2021-12-21 13:42:26,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:42:26,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2021-12-21 13:42:26,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:26,318 INFO L225 Difference]: With dead ends: 3362 [2021-12-21 13:42:26,319 INFO L226 Difference]: Without dead ends: 2476 [2021-12-21 13:42:26,320 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 [2021-12-21 13:42:26,321 INFO L933 BasicCegarLoop]: 498 mSDtfsCounter, 3806 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 764 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3806 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 764 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:26,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3806 Valid, 776 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 764 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 13:42:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2476 states. [2021-12-21 13:42:26,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2476 to 2470. [2021-12-21 13:42:26,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 2464 states have (on average 1.364448051948052) internal successors, (3362), 2469 states have internal predecessors, (3362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:26,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3362 transitions. [2021-12-21 13:42:26,407 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3362 transitions. Word has length 51 [2021-12-21 13:42:26,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:26,407 INFO L470 AbstractCegarLoop]: Abstraction has 2470 states and 3362 transitions. [2021-12-21 13:42:26,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:26,408 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3362 transitions. [2021-12-21 13:42:26,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-21 13:42:26,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:26,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:42:26,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 13:42:26,410 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)] === [2021-12-21 13:42:26,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:26,410 INFO L85 PathProgramCache]: Analyzing trace with hash -614217846, now seen corresponding path program 1 times [2021-12-21 13:42:26,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:26,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35271432] [2021-12-21 13:42:26,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:26,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:26,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:26,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:26,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:26,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35271432] [2021-12-21 13:42:26,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35271432] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:26,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:26,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:42:26,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779721800] [2021-12-21 13:42:26,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:26,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:42:26,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:26,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:42:26,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:42:26,522 INFO L87 Difference]: Start difference. First operand 2470 states and 3362 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:28,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:28,035 INFO L93 Difference]: Finished difference Result 5298 states and 7527 transitions. [2021-12-21 13:42:28,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-21 13:42:28,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-21 13:42:28,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:28,052 INFO L225 Difference]: With dead ends: 5298 [2021-12-21 13:42:28,052 INFO L226 Difference]: Without dead ends: 5293 [2021-12-21 13:42:28,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2021-12-21 13:42:28,058 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 3937 mSDsluCounter, 2483 mSDsCounter, 0 mSdLazyCounter, 2917 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3937 SdHoareTripleChecker+Valid, 3082 SdHoareTripleChecker+Invalid, 3023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:28,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3937 Valid, 3082 Invalid, 3023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2917 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-21 13:42:28,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5293 states. [2021-12-21 13:42:28,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5293 to 2470. [2021-12-21 13:42:28,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 2464 states have (on average 1.3640422077922079) internal successors, (3361), 2469 states have internal predecessors, (3361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3361 transitions. [2021-12-21 13:42:28,203 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3361 transitions. Word has length 52 [2021-12-21 13:42:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:28,203 INFO L470 AbstractCegarLoop]: Abstraction has 2470 states and 3361 transitions. [2021-12-21 13:42:28,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:28,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3361 transitions. [2021-12-21 13:42:28,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-21 13:42:28,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:28,206 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] [2021-12-21 13:42:28,207 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 13:42:28,207 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:28,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:28,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1085905725, now seen corresponding path program 1 times [2021-12-21 13:42:28,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:28,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412818219] [2021-12-21 13:42:28,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:28,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:28,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:28,312 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:28,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412818219] [2021-12-21 13:42:28,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412818219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:28,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:28,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 13:42:28,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581614688] [2021-12-21 13:42:28,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:28,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 13:42:28,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:28,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 13:42:28,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:42:28,314 INFO L87 Difference]: Start difference. First operand 2470 states and 3361 transitions. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:30,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:30,086 INFO L93 Difference]: Finished difference Result 5694 states and 8151 transitions. [2021-12-21 13:42:30,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-21 13:42:30,086 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-21 13:42:30,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:30,100 INFO L225 Difference]: With dead ends: 5694 [2021-12-21 13:42:30,100 INFO L226 Difference]: Without dead ends: 5187 [2021-12-21 13:42:30,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2021-12-21 13:42:30,102 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 4055 mSDsluCounter, 2595 mSDsCounter, 0 mSdLazyCounter, 2972 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4055 SdHoareTripleChecker+Valid, 3219 SdHoareTripleChecker+Invalid, 3107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 2972 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:30,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4055 Valid, 3219 Invalid, 3107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 2972 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-21 13:42:30,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5187 states. [2021-12-21 13:42:30,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5187 to 2470. [2021-12-21 13:42:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 2464 states have (on average 1.3636363636363635) internal successors, (3360), 2469 states have internal predecessors, (3360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:30,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3360 transitions. [2021-12-21 13:42:30,212 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3360 transitions. Word has length 52 [2021-12-21 13:42:30,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:30,213 INFO L470 AbstractCegarLoop]: Abstraction has 2470 states and 3360 transitions. [2021-12-21 13:42:30,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:30,213 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3360 transitions. [2021-12-21 13:42:30,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-21 13:42:30,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:30,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:42:30,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 13:42:30,215 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:30,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:30,216 INFO L85 PathProgramCache]: Analyzing trace with hash -592999742, now seen corresponding path program 1 times [2021-12-21 13:42:30,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:30,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833323298] [2021-12-21 13:42:30,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:30,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:30,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:30,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:30,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833323298] [2021-12-21 13:42:30,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833323298] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:30,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:30,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 13:42:30,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117301957] [2021-12-21 13:42:30,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:30,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 13:42:30,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:30,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 13:42:30,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-21 13:42:30,311 INFO L87 Difference]: Start difference. First operand 2470 states and 3360 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:31,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:31,347 INFO L93 Difference]: Finished difference Result 4398 states and 6210 transitions. [2021-12-21 13:42:31,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:42:31,351 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 52 [2021-12-21 13:42:31,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:31,377 INFO L225 Difference]: With dead ends: 4398 [2021-12-21 13:42:31,378 INFO L226 Difference]: Without dead ends: 3751 [2021-12-21 13:42:31,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:42:31,379 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 5559 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5559 SdHoareTripleChecker+Valid, 1796 SdHoareTripleChecker+Invalid, 1755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:31,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5559 Valid, 1796 Invalid, 1755 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 1685 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:42:31,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3751 states. [2021-12-21 13:42:31,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3751 to 2470. [2021-12-21 13:42:31,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2470 states, 2464 states have (on average 1.3632305194805194) internal successors, (3359), 2469 states have internal predecessors, (3359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:31,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2470 states to 2470 states and 3359 transitions. [2021-12-21 13:42:31,488 INFO L78 Accepts]: Start accepts. Automaton has 2470 states and 3359 transitions. Word has length 52 [2021-12-21 13:42:31,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:31,488 INFO L470 AbstractCegarLoop]: Abstraction has 2470 states and 3359 transitions. [2021-12-21 13:42:31,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:31,488 INFO L276 IsEmpty]: Start isEmpty. Operand 2470 states and 3359 transitions. [2021-12-21 13:42:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-21 13:42:31,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:31,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:42:31,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 13:42:31,490 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:31,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:31,491 INFO L85 PathProgramCache]: Analyzing trace with hash 2034797542, now seen corresponding path program 1 times [2021-12-21 13:42:31,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:31,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491253215] [2021-12-21 13:42:31,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:31,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:31,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:31,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:31,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:31,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491253215] [2021-12-21 13:42:31,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491253215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:31,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:31,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:42:31,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136391723] [2021-12-21 13:42:31,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:31,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:42:31,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:31,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:42:31,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:42:31,520 INFO L87 Difference]: Start difference. First operand 2470 states and 3359 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:31,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:31,707 INFO L93 Difference]: Finished difference Result 3558 states and 4984 transitions. [2021-12-21 13:42:31,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:42:31,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-21 13:42:31,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:31,714 INFO L225 Difference]: With dead ends: 3558 [2021-12-21 13:42:31,714 INFO L226 Difference]: Without dead ends: 2241 [2021-12-21 13:42:31,716 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 [2021-12-21 13:42:31,717 INFO L933 BasicCegarLoop]: 954 mSDtfsCounter, 622 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1291 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:31,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [622 Valid, 1291 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:42:31,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2241 states. [2021-12-21 13:42:31,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2241 to 2239. [2021-12-21 13:42:31,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2239 states, 2233 states have (on average 1.353784146887595) internal successors, (3023), 2238 states have internal predecessors, (3023), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:31,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2239 states to 2239 states and 3023 transitions. [2021-12-21 13:42:31,848 INFO L78 Accepts]: Start accepts. Automaton has 2239 states and 3023 transitions. Word has length 53 [2021-12-21 13:42:31,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:31,849 INFO L470 AbstractCegarLoop]: Abstraction has 2239 states and 3023 transitions. [2021-12-21 13:42:31,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:31,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2239 states and 3023 transitions. [2021-12-21 13:42:31,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-21 13:42:31,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:31,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:42:31,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 13:42:31,851 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:31,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:31,852 INFO L85 PathProgramCache]: Analyzing trace with hash -512099954, now seen corresponding path program 1 times [2021-12-21 13:42:31,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:31,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [109515091] [2021-12-21 13:42:31,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:31,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:31,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:31,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:31,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:31,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [109515091] [2021-12-21 13:42:31,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [109515091] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:31,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:31,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:42:31,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000520248] [2021-12-21 13:42:31,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:31,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:42:31,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:31,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:42:31,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:42:31,892 INFO L87 Difference]: Start difference. First operand 2239 states and 3023 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:32,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:32,115 INFO L93 Difference]: Finished difference Result 3804 states and 5441 transitions. [2021-12-21 13:42:32,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:42:32,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-21 13:42:32,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:32,122 INFO L225 Difference]: With dead ends: 3804 [2021-12-21 13:42:32,123 INFO L226 Difference]: Without dead ends: 2763 [2021-12-21 13:42:32,124 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 [2021-12-21 13:42:32,124 INFO L933 BasicCegarLoop]: 909 mSDtfsCounter, 457 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:32,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 1386 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:42:32,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2021-12-21 13:42:32,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2761. [2021-12-21 13:42:32,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2761 states, 2755 states have (on average 1.3978221415607985) internal successors, (3851), 2760 states have internal predecessors, (3851), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:32,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2761 states to 2761 states and 3851 transitions. [2021-12-21 13:42:32,294 INFO L78 Accepts]: Start accepts. Automaton has 2761 states and 3851 transitions. Word has length 53 [2021-12-21 13:42:32,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:32,295 INFO L470 AbstractCegarLoop]: Abstraction has 2761 states and 3851 transitions. [2021-12-21 13:42:32,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:32,295 INFO L276 IsEmpty]: Start isEmpty. Operand 2761 states and 3851 transitions. [2021-12-21 13:42:32,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-12-21 13:42:32,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:32,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:42:32,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 13:42:32,297 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)] === [2021-12-21 13:42:32,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:32,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1062086298, now seen corresponding path program 1 times [2021-12-21 13:42:32,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:32,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387300166] [2021-12-21 13:42:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:32,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:32,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:32,329 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:32,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387300166] [2021-12-21 13:42:32,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387300166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:32,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:32,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:42:32,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075998929] [2021-12-21 13:42:32,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:32,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:42:32,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:32,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:42:32,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:42:32,331 INFO L87 Difference]: Start difference. First operand 2761 states and 3851 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:32,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:32,631 INFO L93 Difference]: Finished difference Result 5591 states and 8154 transitions. [2021-12-21 13:42:32,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:42:32,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2021-12-21 13:42:32,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:32,641 INFO L225 Difference]: With dead ends: 5591 [2021-12-21 13:42:32,642 INFO L226 Difference]: Without dead ends: 3827 [2021-12-21 13:42:32,645 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 [2021-12-21 13:42:32,645 INFO L933 BasicCegarLoop]: 912 mSDtfsCounter, 434 mSDsluCounter, 488 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1400 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:32,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [434 Valid, 1400 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:42:32,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3827 states. [2021-12-21 13:42:32,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3827 to 3825. [2021-12-21 13:42:32,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3825 states, 3819 states have (on average 1.422623723487824) internal successors, (5433), 3824 states have internal predecessors, (5433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:32,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3825 states to 3825 states and 5433 transitions. [2021-12-21 13:42:32,952 INFO L78 Accepts]: Start accepts. Automaton has 3825 states and 5433 transitions. Word has length 53 [2021-12-21 13:42:32,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:32,953 INFO L470 AbstractCegarLoop]: Abstraction has 3825 states and 5433 transitions. [2021-12-21 13:42:32,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:32,953 INFO L276 IsEmpty]: Start isEmpty. Operand 3825 states and 5433 transitions. [2021-12-21 13:42:32,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-21 13:42:32,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:32,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:42:32,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 13:42:32,968 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:32,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:32,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1383066013, now seen corresponding path program 1 times [2021-12-21 13:42:32,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:32,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278852124] [2021-12-21 13:42:32,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:32,969 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:33,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:33,012 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:33,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278852124] [2021-12-21 13:42:33,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278852124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:33,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:33,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:42:33,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658303439] [2021-12-21 13:42:33,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:33,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:42:33,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:33,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:42:33,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:42:33,014 INFO L87 Difference]: Start difference. First operand 3825 states and 5433 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:33,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:33,450 INFO L93 Difference]: Finished difference Result 7514 states and 10894 transitions. [2021-12-21 13:42:33,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:42:33,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-21 13:42:33,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:33,457 INFO L225 Difference]: With dead ends: 7514 [2021-12-21 13:42:33,458 INFO L226 Difference]: Without dead ends: 4238 [2021-12-21 13:42:33,461 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 [2021-12-21 13:42:33,461 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 645 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:33,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 974 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 13:42:33,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4238 states. [2021-12-21 13:42:33,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4238 to 3413. [2021-12-21 13:42:33,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3413 states, 3408 states have (on average 1.4360328638497653) internal successors, (4894), 3412 states have internal predecessors, (4894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3413 states to 3413 states and 4894 transitions. [2021-12-21 13:42:33,748 INFO L78 Accepts]: Start accepts. Automaton has 3413 states and 4894 transitions. Word has length 54 [2021-12-21 13:42:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:33,748 INFO L470 AbstractCegarLoop]: Abstraction has 3413 states and 4894 transitions. [2021-12-21 13:42:33,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:33,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3413 states and 4894 transitions. [2021-12-21 13:42:33,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-21 13:42:33,750 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:33,750 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:42:33,750 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-21 13:42:33,750 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:33,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:33,751 INFO L85 PathProgramCache]: Analyzing trace with hash -111097732, now seen corresponding path program 1 times [2021-12-21 13:42:33,751 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:33,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267788384] [2021-12-21 13:42:33,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:33,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:33,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:33,808 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:33,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267788384] [2021-12-21 13:42:33,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267788384] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:33,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:33,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:42:33,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471990951] [2021-12-21 13:42:33,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:33,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:42:33,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:33,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:42:33,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:42:33,810 INFO L87 Difference]: Start difference. First operand 3413 states and 4894 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:34,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:34,170 INFO L93 Difference]: Finished difference Result 6968 states and 10156 transitions. [2021-12-21 13:42:34,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:42:34,170 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-21 13:42:34,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:34,175 INFO L225 Difference]: With dead ends: 6968 [2021-12-21 13:42:34,176 INFO L226 Difference]: Without dead ends: 3921 [2021-12-21 13:42:34,178 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 [2021-12-21 13:42:34,179 INFO L933 BasicCegarLoop]: 536 mSDtfsCounter, 523 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 737 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:34,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 737 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:42:34,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3921 states. [2021-12-21 13:42:34,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3921 to 3157. [2021-12-21 13:42:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3157 states, 3153 states have (on average 1.4487789406914051) internal successors, (4568), 3156 states have internal predecessors, (4568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3157 states to 3157 states and 4568 transitions. [2021-12-21 13:42:34,429 INFO L78 Accepts]: Start accepts. Automaton has 3157 states and 4568 transitions. Word has length 54 [2021-12-21 13:42:34,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:34,429 INFO L470 AbstractCegarLoop]: Abstraction has 3157 states and 4568 transitions. [2021-12-21 13:42:34,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:34,429 INFO L276 IsEmpty]: Start isEmpty. Operand 3157 states and 4568 transitions. [2021-12-21 13:42:34,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-21 13:42:34,430 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:34,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:42:34,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-21 13:42:34,431 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:34,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:34,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1920628919, now seen corresponding path program 1 times [2021-12-21 13:42:34,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:34,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7105199] [2021-12-21 13:42:34,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:34,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:34,622 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:34,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7105199] [2021-12-21 13:42:34,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7105199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:34,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:34,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-21 13:42:34,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584677341] [2021-12-21 13:42:34,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:34,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-21 13:42:34,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:34,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-21 13:42:34,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-21 13:42:34,624 INFO L87 Difference]: Start difference. First operand 3157 states and 4568 transitions. Second operand has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:36,233 INFO L93 Difference]: Finished difference Result 6885 states and 9991 transitions. [2021-12-21 13:42:36,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-21 13:42:36,234 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-21 13:42:36,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:36,243 INFO L225 Difference]: With dead ends: 6885 [2021-12-21 13:42:36,243 INFO L226 Difference]: Without dead ends: 6789 [2021-12-21 13:42:36,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=189, Invalid=461, Unknown=0, NotChecked=0, Total=650 [2021-12-21 13:42:36,244 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 3302 mSDsluCounter, 2731 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3302 SdHoareTripleChecker+Valid, 3351 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:36,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3302 Valid, 3351 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 13:42:36,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6789 states. [2021-12-21 13:42:36,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6789 to 3110. [2021-12-21 13:42:36,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3110 states, 3108 states have (on average 1.4507722007722008) internal successors, (4509), 3109 states have internal predecessors, (4509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:36,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4509 transitions. [2021-12-21 13:42:36,583 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4509 transitions. Word has length 55 [2021-12-21 13:42:36,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:36,583 INFO L470 AbstractCegarLoop]: Abstraction has 3110 states and 4509 transitions. [2021-12-21 13:42:36,584 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.0) internal successors, (55), 11 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:36,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4509 transitions. [2021-12-21 13:42:36,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-21 13:42:36,585 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:36,585 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:42:36,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-21 13:42:36,585 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:36,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:36,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1431726049, now seen corresponding path program 1 times [2021-12-21 13:42:36,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:36,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189070059] [2021-12-21 13:42:36,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:36,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:37,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:37,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:37,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189070059] [2021-12-21 13:42:37,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189070059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:37,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:37,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-12-21 13:42:37,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285178776] [2021-12-21 13:42:37,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:37,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-21 13:42:37,012 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:37,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-21 13:42:37,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2021-12-21 13:42:37,012 INFO L87 Difference]: Start difference. First operand 3110 states and 4509 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:39,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:39,864 INFO L93 Difference]: Finished difference Result 5365 states and 7757 transitions. [2021-12-21 13:42:39,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-21 13:42:39,864 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2021-12-21 13:42:39,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:39,871 INFO L225 Difference]: With dead ends: 5365 [2021-12-21 13:42:39,871 INFO L226 Difference]: Without dead ends: 5361 [2021-12-21 13:42:39,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=225, Invalid=1035, Unknown=0, NotChecked=0, Total=1260 [2021-12-21 13:42:39,872 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 4676 mSDsluCounter, 6569 mSDsCounter, 0 mSdLazyCounter, 2904 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4676 SdHoareTripleChecker+Valid, 7186 SdHoareTripleChecker+Invalid, 3004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 2904 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:39,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4676 Valid, 7186 Invalid, 3004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 2904 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-21 13:42:39,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5361 states. [2021-12-21 13:42:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5361 to 3122. [2021-12-21 13:42:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3122 states, 3120 states have (on average 1.4506410256410256) internal successors, (4526), 3121 states have internal predecessors, (4526), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:40,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3122 states to 3122 states and 4526 transitions. [2021-12-21 13:42:40,310 INFO L78 Accepts]: Start accepts. Automaton has 3122 states and 4526 transitions. Word has length 55 [2021-12-21 13:42:40,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:40,310 INFO L470 AbstractCegarLoop]: Abstraction has 3122 states and 4526 transitions. [2021-12-21 13:42:40,311 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 19 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:40,311 INFO L276 IsEmpty]: Start isEmpty. Operand 3122 states and 4526 transitions. [2021-12-21 13:42:40,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-21 13:42:40,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:40,312 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:42:40,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-21 13:42:40,312 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:40,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:40,312 INFO L85 PathProgramCache]: Analyzing trace with hash -434174057, now seen corresponding path program 1 times [2021-12-21 13:42:40,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:40,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712313529] [2021-12-21 13:42:40,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:40,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:40,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:40,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:40,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712313529] [2021-12-21 13:42:40,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712313529] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:40,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:40,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-21 13:42:40,638 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575170092] [2021-12-21 13:42:40,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:40,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-21 13:42:40,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:40,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-21 13:42:40,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-12-21 13:42:40,650 INFO L87 Difference]: Start difference. First operand 3122 states and 4526 transitions. Second operand has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:42,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:42,904 INFO L93 Difference]: Finished difference Result 5532 states and 7987 transitions. [2021-12-21 13:42:42,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-21 13:42:42,905 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2021-12-21 13:42:42,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:42,912 INFO L225 Difference]: With dead ends: 5532 [2021-12-21 13:42:42,913 INFO L226 Difference]: Without dead ends: 5455 [2021-12-21 13:42:42,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2021-12-21 13:42:42,914 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 4003 mSDsluCounter, 4412 mSDsCounter, 0 mSdLazyCounter, 1567 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4003 SdHoareTripleChecker+Valid, 5034 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:42,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4003 Valid, 5034 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1567 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-21 13:42:42,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5455 states. [2021-12-21 13:42:43,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5455 to 3113. [2021-12-21 13:42:43,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3113 states, 3112 states have (on average 1.4505141388174807) internal successors, (4514), 3112 states have internal predecessors, (4514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3113 states to 3113 states and 4514 transitions. [2021-12-21 13:42:43,352 INFO L78 Accepts]: Start accepts. Automaton has 3113 states and 4514 transitions. Word has length 56 [2021-12-21 13:42:43,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:43,352 INFO L470 AbstractCegarLoop]: Abstraction has 3113 states and 4514 transitions. [2021-12-21 13:42:43,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.7333333333333334) internal successors, (56), 15 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:43,353 INFO L276 IsEmpty]: Start isEmpty. Operand 3113 states and 4514 transitions. [2021-12-21 13:42:43,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-12-21 13:42:43,354 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:43,354 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] [2021-12-21 13:42:43,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-21 13:42:43,355 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:43,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:43,355 INFO L85 PathProgramCache]: Analyzing trace with hash -1827161320, now seen corresponding path program 1 times [2021-12-21 13:42:43,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:43,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980728518] [2021-12-21 13:42:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:43,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:43,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:43,403 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:43,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980728518] [2021-12-21 13:42:43,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980728518] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:43,403 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:43,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 13:42:43,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729735682] [2021-12-21 13:42:43,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:43,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:42:43,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:43,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:42:43,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:42:43,405 INFO L87 Difference]: Start difference. First operand 3113 states and 4514 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:44,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:44,607 INFO L93 Difference]: Finished difference Result 9877 states and 14618 transitions. [2021-12-21 13:42:44,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:42:44,608 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2021-12-21 13:42:44,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:44,618 INFO L225 Difference]: With dead ends: 9877 [2021-12-21 13:42:44,619 INFO L226 Difference]: Without dead ends: 7251 [2021-12-21 13:42:44,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:42:44,624 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 1456 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1456 SdHoareTripleChecker+Valid, 978 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:44,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1456 Valid, 978 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:42:44,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7251 states. [2021-12-21 13:42:45,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7251 to 5459. [2021-12-21 13:42:45,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5459 states, 5458 states have (on average 1.4474166361304508) internal successors, (7900), 5458 states have internal predecessors, (7900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5459 states to 5459 states and 7900 transitions. [2021-12-21 13:42:45,493 INFO L78 Accepts]: Start accepts. Automaton has 5459 states and 7900 transitions. Word has length 60 [2021-12-21 13:42:45,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:45,493 INFO L470 AbstractCegarLoop]: Abstraction has 5459 states and 7900 transitions. [2021-12-21 13:42:45,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:45,494 INFO L276 IsEmpty]: Start isEmpty. Operand 5459 states and 7900 transitions. [2021-12-21 13:42:45,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-21 13:42:45,495 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:45,496 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] [2021-12-21 13:42:45,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 13:42:45,496 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:45,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:45,496 INFO L85 PathProgramCache]: Analyzing trace with hash -1073283694, now seen corresponding path program 1 times [2021-12-21 13:42:45,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:45,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391943584] [2021-12-21 13:42:45,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:45,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:45,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:45,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391943584] [2021-12-21 13:42:45,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391943584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:45,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:45,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 13:42:45,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578286072] [2021-12-21 13:42:45,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:45,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:42:45,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:45,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:42:45,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:42:45,547 INFO L87 Difference]: Start difference. First operand 5459 states and 7900 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:46,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:46,277 INFO L93 Difference]: Finished difference Result 8607 states and 12493 transitions. [2021-12-21 13:42:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:42:46,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-12-21 13:42:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:46,281 INFO L225 Difference]: With dead ends: 8607 [2021-12-21 13:42:46,281 INFO L226 Difference]: Without dead ends: 3605 [2021-12-21 13:42:46,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:42:46,286 INFO L933 BasicCegarLoop]: 446 mSDtfsCounter, 745 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 745 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:46,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [745 Valid, 782 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:42:46,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3605 states. [2021-12-21 13:42:46,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3605 to 3601. [2021-12-21 13:42:46,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3601 states, 3600 states have (on average 1.4219444444444445) internal successors, (5119), 3600 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:46,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3601 states to 3601 states and 5119 transitions. [2021-12-21 13:42:46,962 INFO L78 Accepts]: Start accepts. Automaton has 3601 states and 5119 transitions. Word has length 61 [2021-12-21 13:42:46,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:46,962 INFO L470 AbstractCegarLoop]: Abstraction has 3601 states and 5119 transitions. [2021-12-21 13:42:46,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:46,963 INFO L276 IsEmpty]: Start isEmpty. Operand 3601 states and 5119 transitions. [2021-12-21 13:42:46,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-21 13:42:46,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:46,964 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] [2021-12-21 13:42:46,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-21 13:42:46,965 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:46,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:46,965 INFO L85 PathProgramCache]: Analyzing trace with hash 778828119, now seen corresponding path program 1 times [2021-12-21 13:42:46,965 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:46,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724050632] [2021-12-21 13:42:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:46,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:46,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:46,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:46,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:46,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724050632] [2021-12-21 13:42:46,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724050632] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:46,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:46,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:42:46,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593300055] [2021-12-21 13:42:46,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:46,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:42:46,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:46,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:42:46,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:42:46,993 INFO L87 Difference]: Start difference. First operand 3601 states and 5119 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:48,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:48,361 INFO L93 Difference]: Finished difference Result 9575 states and 13793 transitions. [2021-12-21 13:42:48,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:42:48,362 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2021-12-21 13:42:48,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:48,369 INFO L225 Difference]: With dead ends: 9575 [2021-12-21 13:42:48,369 INFO L226 Difference]: Without dead ends: 6431 [2021-12-21 13:42:48,372 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 [2021-12-21 13:42:48,372 INFO L933 BasicCegarLoop]: 508 mSDtfsCounter, 241 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 766 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:48,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 766 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:42:48,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6431 states. [2021-12-21 13:42:49,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6431 to 6013. [2021-12-21 13:42:49,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6013 states, 6012 states have (on average 1.4273120425815036) internal successors, (8581), 6012 states have internal predecessors, (8581), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6013 states to 6013 states and 8581 transitions. [2021-12-21 13:42:49,552 INFO L78 Accepts]: Start accepts. Automaton has 6013 states and 8581 transitions. Word has length 61 [2021-12-21 13:42:49,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:49,552 INFO L470 AbstractCegarLoop]: Abstraction has 6013 states and 8581 transitions. [2021-12-21 13:42:49,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:49,552 INFO L276 IsEmpty]: Start isEmpty. Operand 6013 states and 8581 transitions. [2021-12-21 13:42:49,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-21 13:42:49,554 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:49,554 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] [2021-12-21 13:42:49,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-21 13:42:49,555 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:49,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1461952547, now seen corresponding path program 1 times [2021-12-21 13:42:49,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:49,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013769893] [2021-12-21 13:42:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:49,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:49,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:49,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:49,613 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:49,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013769893] [2021-12-21 13:42:49,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013769893] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:49,613 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:49,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:42:49,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445467539] [2021-12-21 13:42:49,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:49,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 13:42:49,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:49,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 13:42:49,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-21 13:42:49,615 INFO L87 Difference]: Start difference. First operand 6013 states and 8581 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:52,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:52,415 INFO L93 Difference]: Finished difference Result 12672 states and 17893 transitions. [2021-12-21 13:42:52,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 13:42:52,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-12-21 13:42:52,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:52,427 INFO L225 Difference]: With dead ends: 12672 [2021-12-21 13:42:52,427 INFO L226 Difference]: Without dead ends: 12670 [2021-12-21 13:42:52,428 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-21 13:42:52,428 INFO L933 BasicCegarLoop]: 525 mSDtfsCounter, 560 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:52,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 2140 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:42:52,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12670 states. [2021-12-21 13:42:53,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12670 to 6457. [2021-12-21 13:42:53,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6457 states, 6456 states have (on average 1.3979244114002478) internal successors, (9025), 6456 states have internal predecessors, (9025), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:53,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6457 states to 6457 states and 9025 transitions. [2021-12-21 13:42:53,902 INFO L78 Accepts]: Start accepts. Automaton has 6457 states and 9025 transitions. Word has length 64 [2021-12-21 13:42:53,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:53,902 INFO L470 AbstractCegarLoop]: Abstraction has 6457 states and 9025 transitions. [2021-12-21 13:42:53,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 6 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:53,903 INFO L276 IsEmpty]: Start isEmpty. Operand 6457 states and 9025 transitions. [2021-12-21 13:42:53,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-21 13:42:53,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:53,912 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] [2021-12-21 13:42:53,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-21 13:42:53,912 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:53,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:53,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1754067009, now seen corresponding path program 1 times [2021-12-21 13:42:53,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:53,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272036120] [2021-12-21 13:42:53,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:53,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:53,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:53,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:53,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:53,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272036120] [2021-12-21 13:42:53,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272036120] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:53,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:53,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:42:53,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776029647] [2021-12-21 13:42:53,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:53,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:42:53,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:53,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:42:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:42:53,942 INFO L87 Difference]: Start difference. First operand 6457 states and 9025 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:56,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:42:56,514 INFO L93 Difference]: Finished difference Result 17249 states and 24281 transitions. [2021-12-21 13:42:56,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:42:56,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-12-21 13:42:56,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:42:56,527 INFO L225 Difference]: With dead ends: 17249 [2021-12-21 13:42:56,527 INFO L226 Difference]: Without dead ends: 11237 [2021-12-21 13:42:56,532 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 [2021-12-21 13:42:56,533 INFO L933 BasicCegarLoop]: 451 mSDtfsCounter, 263 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:42:56,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 694 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:42:56,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11237 states. [2021-12-21 13:42:59,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11237 to 11087. [2021-12-21 13:42:59,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11087 states, 11086 states have (on average 1.381832942449937) internal successors, (15319), 11086 states have internal predecessors, (15319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:59,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11087 states to 11087 states and 15319 transitions. [2021-12-21 13:42:59,099 INFO L78 Accepts]: Start accepts. Automaton has 11087 states and 15319 transitions. Word has length 65 [2021-12-21 13:42:59,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:42:59,099 INFO L470 AbstractCegarLoop]: Abstraction has 11087 states and 15319 transitions. [2021-12-21 13:42:59,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:42:59,100 INFO L276 IsEmpty]: Start isEmpty. Operand 11087 states and 15319 transitions. [2021-12-21 13:42:59,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-21 13:42:59,101 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:42:59,102 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] [2021-12-21 13:42:59,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-21 13:42:59,102 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-12-21 13:42:59,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:42:59,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1595040439, now seen corresponding path program 1 times [2021-12-21 13:42:59,102 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:42:59,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502252279] [2021-12-21 13:42:59,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:42:59,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:42:59,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:42:59,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:42:59,139 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:42:59,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502252279] [2021-12-21 13:42:59,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502252279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:42:59,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:42:59,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 13:42:59,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384839764] [2021-12-21 13:42:59,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:42:59,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:42:59,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:42:59,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:42:59,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:42:59,140 INFO L87 Difference]: Start difference. First operand 11087 states and 15319 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:43:02,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:43:02,651 INFO L93 Difference]: Finished difference Result 19431 states and 26963 transitions. [2021-12-21 13:43:02,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:43:02,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2021-12-21 13:43:02,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:43:02,669 INFO L225 Difference]: With dead ends: 19431 [2021-12-21 13:43:02,669 INFO L226 Difference]: Without dead ends: 15977 [2021-12-21 13:43:02,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:43:02,674 INFO L933 BasicCegarLoop]: 511 mSDtfsCounter, 962 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1205 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:43:02,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 1205 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:43:02,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15977 states. [2021-12-21 13:43:05,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15977 to 13874. [2021-12-21 13:43:05,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13874 states, 13873 states have (on average 1.3785050097311324) internal successors, (19124), 13873 states have internal predecessors, (19124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:43:05,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13874 states to 13874 states and 19124 transitions. [2021-12-21 13:43:05,987 INFO L78 Accepts]: Start accepts. Automaton has 13874 states and 19124 transitions. Word has length 66 [2021-12-21 13:43:05,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:43:05,987 INFO L470 AbstractCegarLoop]: Abstraction has 13874 states and 19124 transitions. [2021-12-21 13:43:05,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:43:05,988 INFO L276 IsEmpty]: Start isEmpty. Operand 13874 states and 19124 transitions. [2021-12-21 13:43:05,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-21 13:43:05,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:43:05,990 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 13:43:05,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-21 13:43:05,990 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)] === [2021-12-21 13:43:05,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:43:05,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1924581840, now seen corresponding path program 1 times [2021-12-21 13:43:05,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:43:05,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814108179] [2021-12-21 13:43:05,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:43:05,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:43:06,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:43:06,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:43:06,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:43:06,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814108179] [2021-12-21 13:43:06,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814108179] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:43:06,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:43:06,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-21 13:43:06,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504211123] [2021-12-21 13:43:06,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:43:06,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-21 13:43:06,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:43:06,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-21 13:43:06,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-21 13:43:06,025 INFO L87 Difference]: Start difference. First operand 13874 states and 19124 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:43:08,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:43:08,469 INFO L93 Difference]: Finished difference Result 16736 states and 23010 transitions. [2021-12-21 13:43:08,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-21 13:43:08,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2021-12-21 13:43:08,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:43:08,482 INFO L225 Difference]: With dead ends: 16736 [2021-12-21 13:43:08,482 INFO L226 Difference]: Without dead ends: 11000 [2021-12-21 13:43:08,487 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 [2021-12-21 13:43:08,488 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 175 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:43:08,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 828 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:43:08,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11000 states. [2021-12-21 13:43:10,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11000 to 10929. [2021-12-21 13:43:10,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10929 states, 10928 states have (on average 1.353770131771596) internal successors, (14794), 10928 states have internal predecessors, (14794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:43:10,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10929 states to 10929 states and 14794 transitions. [2021-12-21 13:43:10,894 INFO L78 Accepts]: Start accepts. Automaton has 10929 states and 14794 transitions. Word has length 67 [2021-12-21 13:43:10,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:43:10,894 INFO L470 AbstractCegarLoop]: Abstraction has 10929 states and 14794 transitions. [2021-12-21 13:43:10,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:43:10,895 INFO L276 IsEmpty]: Start isEmpty. Operand 10929 states and 14794 transitions. [2021-12-21 13:43:10,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 13:43:10,896 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:43:10,896 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] [2021-12-21 13:43:10,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-21 13:43:10,897 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)] === [2021-12-21 13:43:10,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:43:10,897 INFO L85 PathProgramCache]: Analyzing trace with hash 1353553607, now seen corresponding path program 1 times [2021-12-21 13:43:10,897 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:43:10,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385271845] [2021-12-21 13:43:10,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:43:10,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:43:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:43:10,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:43:10,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:43:10,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385271845] [2021-12-21 13:43:10,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385271845] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:43:10,939 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:43:10,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 13:43:10,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613024156] [2021-12-21 13:43:10,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:43:10,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 13:43:10,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:43:10,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 13:43:10,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 13:43:10,940 INFO L87 Difference]: Start difference. First operand 10929 states and 14794 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:43:14,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:43:14,018 INFO L93 Difference]: Finished difference Result 15778 states and 21511 transitions. [2021-12-21 13:43:14,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 13:43:14,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-21 13:43:14,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:43:14,034 INFO L225 Difference]: With dead ends: 15778 [2021-12-21 13:43:14,034 INFO L226 Difference]: Without dead ends: 13360 [2021-12-21 13:43:14,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:43:14,039 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 953 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 13:43:14,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 1116 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 13:43:14,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13360 states. [2021-12-21 13:43:16,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13360 to 12698. [2021-12-21 13:43:16,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12698 states, 12697 states have (on average 1.3533118059384106) internal successors, (17183), 12697 states have internal predecessors, (17183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:43:16,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12698 states to 12698 states and 17183 transitions. [2021-12-21 13:43:16,924 INFO L78 Accepts]: Start accepts. Automaton has 12698 states and 17183 transitions. Word has length 69 [2021-12-21 13:43:16,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 13:43:16,925 INFO L470 AbstractCegarLoop]: Abstraction has 12698 states and 17183 transitions. [2021-12-21 13:43:16,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:43:16,925 INFO L276 IsEmpty]: Start isEmpty. Operand 12698 states and 17183 transitions. [2021-12-21 13:43:16,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-21 13:43:16,927 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 13:43:16,927 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] [2021-12-21 13:43:16,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-21 13:43:16,927 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)] === [2021-12-21 13:43:16,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 13:43:16,928 INFO L85 PathProgramCache]: Analyzing trace with hash -537948960, now seen corresponding path program 1 times [2021-12-21 13:43:16,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 13:43:16,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037060538] [2021-12-21 13:43:16,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 13:43:16,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 13:43:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 13:43:16,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 13:43:16,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 13:43:16,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037060538] [2021-12-21 13:43:16,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037060538] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 13:43:16,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 13:43:16,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-21 13:43:16,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592919341] [2021-12-21 13:43:16,986 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 13:43:16,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 13:43:16,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 13:43:16,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 13:43:16,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-21 13:43:16,987 INFO L87 Difference]: Start difference. First operand 12698 states and 17183 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-21 13:43:25,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 13:43:25,215 INFO L93 Difference]: Finished difference Result 38804 states and 52467 transitions. [2021-12-21 13:43:25,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-21 13:43:25,216 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 69 [2021-12-21 13:43:25,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 13:43:25,262 INFO L225 Difference]: With dead ends: 38804 [2021-12-21 13:43:25,262 INFO L226 Difference]: Without dead ends: 31210 [2021-12-21 13:43:25,275 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 [2021-12-21 13:43:25,277 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 2397 mSDsluCounter, 395 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2397 SdHoareTripleChecker+Valid, 685 SdHoareTripleChecker+Invalid, 774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 13:43:25,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2397 Valid, 685 Invalid, 774 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 13:43:25,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31210 states.