./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f8647b87d9679ff1ae7ce0cdb1a68cb57cbc5ac468f0ecd53079584cb92d51fd --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-17 16:22:33,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 16:22:33,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 16:22:33,353 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 16:22:33,354 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 16:22:33,356 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 16:22:33,357 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 16:22:33,359 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 16:22:33,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 16:22:33,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 16:22:33,366 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 16:22:33,366 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 16:22:33,367 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 16:22:33,368 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 16:22:33,370 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 16:22:33,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 16:22:33,374 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 16:22:33,375 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 16:22:33,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 16:22:33,378 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 16:22:33,380 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 16:22:33,381 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 16:22:33,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 16:22:33,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 16:22:33,384 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 16:22:33,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 16:22:33,388 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 16:22:33,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 16:22:33,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 16:22:33,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 16:22:33,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 16:22:33,390 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 16:22:33,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 16:22:33,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 16:22:33,392 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 16:22:33,393 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 16:22:33,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 16:22:33,394 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 16:22:33,394 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 16:22:33,395 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 16:22:33,395 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 16:22:33,396 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-17 16:22:33,418 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 16:22:33,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 16:22:33,419 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 16:22:33,419 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 16:22:33,420 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 16:22:33,420 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 16:22:33,424 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 16:22:33,425 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 16:22:33,425 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 16:22:33,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 16:22:33,425 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-17 16:22:33,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 16:22:33,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-17 16:22:33,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 16:22:33,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 16:22:33,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 16:22:33,426 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 16:22:33,427 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-17 16:22:33,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 16:22:33,427 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 16:22:33,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 16:22:33,427 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 16:22:33,427 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 16:22:33,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 16:22:33,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:22:33,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 16:22:33,428 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 16:22:33,428 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 16:22:33,428 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 16:22:33,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 16:22:33,429 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 16:22:33,429 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 16:22:33,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 16:22:33,429 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 16:22:33,429 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8647b87d9679ff1ae7ce0cdb1a68cb57cbc5ac468f0ecd53079584cb92d51fd [2021-12-17 16:22:33,633 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 16:22:33,647 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 16:22:33,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 16:22:33,650 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 16:22:33,650 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 16:22:33,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2021-12-17 16:22:33,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02410447/2094aeebf3db4fd8a01460148dad747d/FLAG8553b38e4 [2021-12-17 16:22:34,067 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 16:22:34,068 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2021-12-17 16:22:34,086 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02410447/2094aeebf3db4fd8a01460148dad747d/FLAG8553b38e4 [2021-12-17 16:22:34,451 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e02410447/2094aeebf3db4fd8a01460148dad747d [2021-12-17 16:22:34,453 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 16:22:34,454 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 16:22:34,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 16:22:34,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 16:22:34,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 16:22:34,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:22:34" (1/1) ... [2021-12-17 16:22:34,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@794dc68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:34, skipping insertion in model container [2021-12-17 16:22:34,459 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 04:22:34" (1/1) ... [2021-12-17 16:22:34,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 16:22:34,497 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 16:22:34,698 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.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[6197,6210] [2021-12-17 16:22:34,722 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[9182,9195] [2021-12-17 16:22:34,731 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12241,12254] [2021-12-17 16:22:34,740 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[15128,15141] [2021-12-17 16:22:34,749 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[18343,18356] [2021-12-17 16:22:34,757 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[21435,21448] [2021-12-17 16:22:34,765 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[24486,24499] [2021-12-17 16:22:34,783 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:22:34,791 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 16:22:34,827 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[6197,6210] [2021-12-17 16:22:34,836 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[9182,9195] [2021-12-17 16:22:34,845 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[12241,12254] [2021-12-17 16:22:34,854 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[15128,15141] [2021-12-17 16:22:34,863 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[18343,18356] [2021-12-17 16:22:34,869 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[21435,21448] [2021-12-17 16:22:34,875 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c[24486,24499] [2021-12-17 16:22:34,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 16:22:34,900 INFO L208 MainTranslator]: Completed translation [2021-12-17 16:22:34,900 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:34 WrapperNode [2021-12-17 16:22:34,901 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 16:22:34,901 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 16:22:34,901 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 16:22:34,902 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 16:22:34,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:34" (1/1) ... [2021-12-17 16:22:34,935 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:34" (1/1) ... [2021-12-17 16:22:34,985 INFO L137 Inliner]: procedures = 22, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 1327 [2021-12-17 16:22:34,986 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 16:22:34,986 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 16:22:34,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 16:22:34,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 16:22:34,992 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:34" (1/1) ... [2021-12-17 16:22:34,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:34" (1/1) ... [2021-12-17 16:22:34,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:34" (1/1) ... [2021-12-17 16:22:34,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:34" (1/1) ... [2021-12-17 16:22:35,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:34" (1/1) ... [2021-12-17 16:22:35,012 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:34" (1/1) ... [2021-12-17 16:22:35,015 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:34" (1/1) ... [2021-12-17 16:22:35,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 16:22:35,020 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 16:22:35,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 16:22:35,020 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 16:22:35,021 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:34" (1/1) ... [2021-12-17 16:22:35,026 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 16:22:35,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:22:35,069 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-17 16:22:35,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-17 16:22:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 16:22:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 16:22:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 16:22:35,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 16:22:35,210 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 16:22:35,211 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 16:22:35,906 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 16:22:35,919 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 16:22:35,920 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-17 16:22:35,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:22:35 BoogieIcfgContainer [2021-12-17 16:22:35,922 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 16:22:35,924 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 16:22:35,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 16:22:35,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 16:22:35,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 04:22:34" (1/3) ... [2021-12-17 16:22:35,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e145b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:22:35, skipping insertion in model container [2021-12-17 16:22:35,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 04:22:34" (2/3) ... [2021-12-17 16:22:35,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e145b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 04:22:35, skipping insertion in model container [2021-12-17 16:22:35,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 04:22:35" (3/3) ... [2021-12-17 16:22:35,929 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+sep-reducer.c [2021-12-17 16:22:35,933 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 16:22:35,934 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2021-12-17 16:22:35,977 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 16:22:35,985 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-17 16:22:35,985 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-12-17 16:22:35,997 INFO L276 IsEmpty]: Start isEmpty. Operand has 279 states, 271 states have (on average 1.7933579335793357) internal successors, (486), 278 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:36,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-17 16:22:36,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:36,005 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] [2021-12-17 16:22:36,005 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:36,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:36,011 INFO L85 PathProgramCache]: Analyzing trace with hash -506083603, now seen corresponding path program 1 times [2021-12-17 16:22:36,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:36,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629534778] [2021-12-17 16:22:36,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:36,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:36,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:36,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:36,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629534778] [2021-12-17 16:22:36,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629534778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:36,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:36,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:22:36,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390776124] [2021-12-17 16:22:36,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:36,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:22:36,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:36,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:22:36,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:22:36,320 INFO L87 Difference]: Start difference. First operand has 279 states, 271 states have (on average 1.7933579335793357) internal successors, (486), 278 states have internal predecessors, (486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:36,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:36,575 INFO L93 Difference]: Finished difference Result 392 states and 660 transitions. [2021-12-17 16:22:36,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:22:36,577 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-12-17 16:22:36,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:36,588 INFO L225 Difference]: With dead ends: 392 [2021-12-17 16:22:36,588 INFO L226 Difference]: Without dead ends: 244 [2021-12-17 16:22:36,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:22:36,593 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 1142 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:36,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 300 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:22:36,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-12-17 16:22:36,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 244. [2021-12-17 16:22:36,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 237 states have (on average 1.2658227848101267) internal successors, (300), 243 states have internal predecessors, (300), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 300 transitions. [2021-12-17 16:22:36,647 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 300 transitions. Word has length 48 [2021-12-17 16:22:36,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:36,647 INFO L470 AbstractCegarLoop]: Abstraction has 244 states and 300 transitions. [2021-12-17 16:22:36,648 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:36,648 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 300 transitions. [2021-12-17 16:22:36,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-17 16:22:36,654 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:36,654 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] [2021-12-17 16:22:36,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 16:22:36,655 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:36,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:36,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1206513712, now seen corresponding path program 1 times [2021-12-17 16:22:36,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:36,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62362093] [2021-12-17 16:22:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:36,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:36,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:36,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:36,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62362093] [2021-12-17 16:22:36,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62362093] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:36,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:36,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:22:36,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184080311] [2021-12-17 16:22:36,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:36,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:22:36,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:36,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:22:36,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:22:36,726 INFO L87 Difference]: Start difference. First operand 244 states and 300 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:36,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:36,820 INFO L93 Difference]: Finished difference Result 312 states and 387 transitions. [2021-12-17 16:22:36,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:22:36,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-12-17 16:22:36,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:36,822 INFO L225 Difference]: With dead ends: 312 [2021-12-17 16:22:36,822 INFO L226 Difference]: Without dead ends: 186 [2021-12-17 16:22:36,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:22:36,824 INFO L933 BasicCegarLoop]: 132 mSDtfsCounter, 632 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:36,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 144 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:22:36,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-12-17 16:22:36,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2021-12-17 16:22:36,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 179 states have (on average 1.2681564245810055) internal successors, (227), 185 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:36,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 227 transitions. [2021-12-17 16:22:36,831 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 227 transitions. Word has length 48 [2021-12-17 16:22:36,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:36,831 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 227 transitions. [2021-12-17 16:22:36,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:36,832 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 227 transitions. [2021-12-17 16:22:36,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-12-17 16:22:36,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:36,833 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] [2021-12-17 16:22:36,833 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-17 16:22:36,833 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:36,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:36,834 INFO L85 PathProgramCache]: Analyzing trace with hash 731649800, now seen corresponding path program 1 times [2021-12-17 16:22:36,834 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:36,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13400387] [2021-12-17 16:22:36,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:36,834 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:36,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:36,888 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:36,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13400387] [2021-12-17 16:22:36,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [13400387] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:36,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:36,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-17 16:22:36,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330010972] [2021-12-17 16:22:36,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:36,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:22:36,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:36,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:22:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:22:36,893 INFO L87 Difference]: Start difference. First operand 186 states and 227 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:36,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:36,971 INFO L93 Difference]: Finished difference Result 266 states and 332 transitions. [2021-12-17 16:22:36,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:22:36,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2021-12-17 16:22:36,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:36,972 INFO L225 Difference]: With dead ends: 266 [2021-12-17 16:22:36,972 INFO L226 Difference]: Without dead ends: 163 [2021-12-17 16:22:36,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-17 16:22:36,973 INFO L933 BasicCegarLoop]: 123 mSDtfsCounter, 562 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 562 SdHoareTripleChecker+Valid, 127 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:36,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [562 Valid, 127 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:22:36,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-12-17 16:22:36,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-12-17 16:22:36,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 156 states have (on average 1.2756410256410255) internal successors, (199), 162 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:36,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 199 transitions. [2021-12-17 16:22:36,988 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 199 transitions. Word has length 48 [2021-12-17 16:22:36,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:36,988 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 199 transitions. [2021-12-17 16:22:36,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 4 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:36,988 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 199 transitions. [2021-12-17 16:22:36,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-17 16:22:36,989 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:36,989 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] [2021-12-17 16:22:36,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-17 16:22:36,989 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:36,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:36,990 INFO L85 PathProgramCache]: Analyzing trace with hash 613838546, now seen corresponding path program 1 times [2021-12-17 16:22:36,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:36,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501849570] [2021-12-17 16:22:36,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:36,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:37,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:37,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:37,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501849570] [2021-12-17 16:22:37,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501849570] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:37,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:37,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-17 16:22:37,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825094868] [2021-12-17 16:22:37,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:37,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 16:22:37,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:37,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 16:22:37,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:22:37,129 INFO L87 Difference]: Start difference. First operand 163 states and 199 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:37,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:37,376 INFO L93 Difference]: Finished difference Result 326 states and 405 transitions. [2021-12-17 16:22:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 16:22:37,377 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-17 16:22:37,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:37,378 INFO L225 Difference]: With dead ends: 326 [2021-12-17 16:22:37,378 INFO L226 Difference]: Without dead ends: 239 [2021-12-17 16:22:37,379 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2021-12-17 16:22:37,379 INFO L933 BasicCegarLoop]: 114 mSDtfsCounter, 1064 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1064 SdHoareTripleChecker+Valid, 440 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:37,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1064 Valid, 440 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:22:37,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-17 16:22:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 163. [2021-12-17 16:22:37,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 156 states have (on average 1.2692307692307692) internal successors, (198), 162 states have internal predecessors, (198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:37,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 198 transitions. [2021-12-17 16:22:37,387 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 198 transitions. Word has length 50 [2021-12-17 16:22:37,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:37,388 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 198 transitions. [2021-12-17 16:22:37,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:37,388 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 198 transitions. [2021-12-17 16:22:37,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-17 16:22:37,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:37,389 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] [2021-12-17 16:22:37,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-17 16:22:37,389 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:37,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:37,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1717096174, now seen corresponding path program 1 times [2021-12-17 16:22:37,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:37,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742275592] [2021-12-17 16:22:37,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:37,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:37,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:37,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:37,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742275592] [2021-12-17 16:22:37,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742275592] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:37,484 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:37,484 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:22:37,484 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793914304] [2021-12-17 16:22:37,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:37,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:22:37,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:37,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:22:37,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:22:37,486 INFO L87 Difference]: Start difference. First operand 163 states and 198 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:37,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:37,847 INFO L93 Difference]: Finished difference Result 343 states and 441 transitions. [2021-12-17 16:22:37,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:22:37,848 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-17 16:22:37,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:37,849 INFO L225 Difference]: With dead ends: 343 [2021-12-17 16:22:37,849 INFO L226 Difference]: Without dead ends: 337 [2021-12-17 16:22:37,850 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:22:37,850 INFO L933 BasicCegarLoop]: 152 mSDtfsCounter, 844 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:37,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 748 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:22:37,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-12-17 16:22:37,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 163. [2021-12-17 16:22:37,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 156 states have (on average 1.2628205128205128) internal successors, (197), 162 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:37,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 197 transitions. [2021-12-17 16:22:37,860 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 197 transitions. Word has length 50 [2021-12-17 16:22:37,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:37,860 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 197 transitions. [2021-12-17 16:22:37,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:37,860 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 197 transitions. [2021-12-17 16:22:37,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-12-17 16:22:37,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:37,861 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] [2021-12-17 16:22:37,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 16:22:37,861 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:37,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:37,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1648014290, now seen corresponding path program 1 times [2021-12-17 16:22:37,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:37,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70674148] [2021-12-17 16:22:37,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:37,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:37,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:37,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:37,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:37,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70674148] [2021-12-17 16:22:37,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70674148] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:37,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:37,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:22:37,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630707337] [2021-12-17 16:22:37,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:37,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:22:37,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:37,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:22:37,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:22:37,946 INFO L87 Difference]: Start difference. First operand 163 states and 197 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:38,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:38,315 INFO L93 Difference]: Finished difference Result 403 states and 525 transitions. [2021-12-17 16:22:38,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:22:38,316 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 50 [2021-12-17 16:22:38,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:38,317 INFO L225 Difference]: With dead ends: 403 [2021-12-17 16:22:38,317 INFO L226 Difference]: Without dead ends: 341 [2021-12-17 16:22:38,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=116, Invalid=304, Unknown=0, NotChecked=0, Total=420 [2021-12-17 16:22:38,318 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 985 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 985 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:38,318 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [985 Valid, 835 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:22:38,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2021-12-17 16:22:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 163. [2021-12-17 16:22:38,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 156 states have (on average 1.2564102564102564) internal successors, (196), 162 states have internal predecessors, (196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:38,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 196 transitions. [2021-12-17 16:22:38,327 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 196 transitions. Word has length 50 [2021-12-17 16:22:38,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:38,327 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 196 transitions. [2021-12-17 16:22:38,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 8 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:38,327 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 196 transitions. [2021-12-17 16:22:38,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-12-17 16:22:38,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:38,328 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] [2021-12-17 16:22:38,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 16:22:38,328 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:38,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:38,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1708755507, now seen corresponding path program 1 times [2021-12-17 16:22:38,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:38,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787449243] [2021-12-17 16:22:38,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:38,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:38,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:38,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:38,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787449243] [2021-12-17 16:22:38,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787449243] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:38,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:38,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2021-12-17 16:22:38,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020705723] [2021-12-17 16:22:38,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:38,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-17 16:22:38,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:38,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-17 16:22:38,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2021-12-17 16:22:38,948 INFO L87 Difference]: Start difference. First operand 163 states and 196 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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) [2021-12-17 16:22:40,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:40,711 INFO L93 Difference]: Finished difference Result 322 states and 400 transitions. [2021-12-17 16:22:40,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-12-17 16:22:40,714 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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 [2021-12-17 16:22:40,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:40,715 INFO L225 Difference]: With dead ends: 322 [2021-12-17 16:22:40,715 INFO L226 Difference]: Without dead ends: 278 [2021-12-17 16:22:40,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=246, Invalid=684, Unknown=0, NotChecked=0, Total=930 [2021-12-17 16:22:40,716 INFO L933 BasicCegarLoop]: 234 mSDtfsCounter, 1105 mSDsluCounter, 1619 mSDsCounter, 0 mSdLazyCounter, 748 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:40,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1105 Valid, 1853 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 748 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:22:40,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-12-17 16:22:40,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 162. [2021-12-17 16:22:40,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 155 states have (on average 1.2516129032258065) internal successors, (194), 161 states have internal predecessors, (194), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:40,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 194 transitions. [2021-12-17 16:22:40,727 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 194 transitions. Word has length 51 [2021-12-17 16:22:40,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:40,727 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 194 transitions. [2021-12-17 16:22:40,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 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) [2021-12-17 16:22:40,727 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 194 transitions. [2021-12-17 16:22:40,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-17 16:22:40,728 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:40,728 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] [2021-12-17 16:22:40,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-17 16:22:40,728 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:40,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:40,729 INFO L85 PathProgramCache]: Analyzing trace with hash 871420535, now seen corresponding path program 1 times [2021-12-17 16:22:40,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:40,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939151399] [2021-12-17 16:22:40,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:40,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:40,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:40,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:40,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939151399] [2021-12-17 16:22:40,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939151399] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:40,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:40,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:22:40,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37368894] [2021-12-17 16:22:40,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:40,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:22:40,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:40,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:22:40,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:22:40,957 INFO L87 Difference]: Start difference. First operand 162 states and 194 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 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) [2021-12-17 16:22:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:41,583 INFO L93 Difference]: Finished difference Result 390 states and 481 transitions. [2021-12-17 16:22:41,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-17 16:22:41,585 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 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 [2021-12-17 16:22:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:41,586 INFO L225 Difference]: With dead ends: 390 [2021-12-17 16:22:41,586 INFO L226 Difference]: Without dead ends: 386 [2021-12-17 16:22:41,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-12-17 16:22:41,587 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 1249 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 1516 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:41,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 1516 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 461 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:22:41,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-12-17 16:22:41,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 158. [2021-12-17 16:22:41,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 152 states have (on average 1.25) internal successors, (190), 157 states have internal predecessors, (190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:41,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 190 transitions. [2021-12-17 16:22:41,600 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 190 transitions. Word has length 52 [2021-12-17 16:22:41,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:41,601 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 190 transitions. [2021-12-17 16:22:41,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 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) [2021-12-17 16:22:41,602 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 190 transitions. [2021-12-17 16:22:41,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2021-12-17 16:22:41,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:41,603 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] [2021-12-17 16:22:41,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 16:22:41,603 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:41,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:41,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1375412663, now seen corresponding path program 1 times [2021-12-17 16:22:41,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:41,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424016888] [2021-12-17 16:22:41,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:41,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:41,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:41,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:41,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:41,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424016888] [2021-12-17 16:22:41,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424016888] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:41,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:41,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-17 16:22:41,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449791851] [2021-12-17 16:22:41,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:41,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-17 16:22:41,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:41,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-17 16:22:41,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-17 16:22:41,815 INFO L87 Difference]: Start difference. First operand 158 states and 190 transitions. Second operand has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 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) [2021-12-17 16:22:42,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:42,317 INFO L93 Difference]: Finished difference Result 491 states and 647 transitions. [2021-12-17 16:22:42,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-17 16:22:42,318 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 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 [2021-12-17 16:22:42,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:42,319 INFO L225 Difference]: With dead ends: 491 [2021-12-17 16:22:42,319 INFO L226 Difference]: Without dead ends: 413 [2021-12-17 16:22:42,320 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=147, Invalid=359, Unknown=0, NotChecked=0, Total=506 [2021-12-17 16:22:42,322 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 1465 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:42,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1465 Valid, 823 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:22:42,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2021-12-17 16:22:42,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 123. [2021-12-17 16:22:42,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.25) internal successors, (150), 122 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 150 transitions. [2021-12-17 16:22:42,338 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 150 transitions. Word has length 52 [2021-12-17 16:22:42,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:42,338 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 150 transitions. [2021-12-17 16:22:42,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 11 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) [2021-12-17 16:22:42,338 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 150 transitions. [2021-12-17 16:22:42,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-17 16:22:42,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:42,339 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] [2021-12-17 16:22:42,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-17 16:22:42,339 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:42,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:42,340 INFO L85 PathProgramCache]: Analyzing trace with hash -895336457, now seen corresponding path program 1 times [2021-12-17 16:22:42,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:42,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322118813] [2021-12-17 16:22:42,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:42,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:42,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:42,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:42,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322118813] [2021-12-17 16:22:42,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [322118813] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:42,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:42,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:22:42,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957146921] [2021-12-17 16:22:42,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:42,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:22:42,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:42,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:22:42,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:22:42,441 INFO L87 Difference]: Start difference. First operand 123 states and 150 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:42,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:42,692 INFO L93 Difference]: Finished difference Result 197 states and 245 transitions. [2021-12-17 16:22:42,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-17 16:22:42,693 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-17 16:22:42,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:42,694 INFO L225 Difference]: With dead ends: 197 [2021-12-17 16:22:42,694 INFO L226 Difference]: Without dead ends: 189 [2021-12-17 16:22:42,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2021-12-17 16:22:42,695 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 672 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 672 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:42,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [672 Valid, 479 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:22:42,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-17 16:22:42,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 123. [2021-12-17 16:22:42,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.2416666666666667) internal successors, (149), 122 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:42,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 149 transitions. [2021-12-17 16:22:42,705 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 149 transitions. Word has length 54 [2021-12-17 16:22:42,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:42,705 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 149 transitions. [2021-12-17 16:22:42,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:42,705 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 149 transitions. [2021-12-17 16:22:42,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2021-12-17 16:22:42,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:42,706 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] [2021-12-17 16:22:42,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-17 16:22:42,706 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:42,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:42,707 INFO L85 PathProgramCache]: Analyzing trace with hash 4832631, now seen corresponding path program 1 times [2021-12-17 16:22:42,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:42,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002025539] [2021-12-17 16:22:42,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:42,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:42,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:42,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:42,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002025539] [2021-12-17 16:22:42,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002025539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:42,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:42,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-17 16:22:42,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794792897] [2021-12-17 16:22:42,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:42,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 16:22:42,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:42,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 16:22:42,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-12-17 16:22:42,787 INFO L87 Difference]: Start difference. First operand 123 states and 149 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:43,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:43,014 INFO L93 Difference]: Finished difference Result 272 states and 345 transitions. [2021-12-17 16:22:43,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-17 16:22:43,014 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 54 [2021-12-17 16:22:43,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:43,015 INFO L225 Difference]: With dead ends: 272 [2021-12-17 16:22:43,015 INFO L226 Difference]: Without dead ends: 209 [2021-12-17 16:22:43,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=106, Invalid=274, Unknown=0, NotChecked=0, Total=380 [2021-12-17 16:22:43,018 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 684 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 684 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:43,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [684 Valid, 530 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 16:22:43,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-12-17 16:22:43,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 123. [2021-12-17 16:22:43,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.2333333333333334) internal successors, (148), 122 states have internal predecessors, (148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:43,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 148 transitions. [2021-12-17 16:22:43,030 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 148 transitions. Word has length 54 [2021-12-17 16:22:43,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:43,030 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 148 transitions. [2021-12-17 16:22:43,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:43,030 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 148 transitions. [2021-12-17 16:22:43,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-17 16:22:43,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:43,031 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] [2021-12-17 16:22:43,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-17 16:22:43,031 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:43,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:43,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1614885916, now seen corresponding path program 1 times [2021-12-17 16:22:43,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:43,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989159935] [2021-12-17 16:22:43,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:43,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:43,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:43,293 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:43,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:43,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989159935] [2021-12-17 16:22:43,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989159935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:43,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:43,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:22:43,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135400701] [2021-12-17 16:22:43,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:43,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:22:43,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:43,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:22:43,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:22:43,294 INFO L87 Difference]: Start difference. First operand 123 states and 148 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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) [2021-12-17 16:22:44,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:44,029 INFO L93 Difference]: Finished difference Result 478 states and 645 transitions. [2021-12-17 16:22:44,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-17 16:22:44,030 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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 [2021-12-17 16:22:44,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:44,031 INFO L225 Difference]: With dead ends: 478 [2021-12-17 16:22:44,031 INFO L226 Difference]: Without dead ends: 472 [2021-12-17 16:22:44,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:22:44,032 INFO L933 BasicCegarLoop]: 297 mSDtfsCounter, 1039 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 2398 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:44,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1039 Valid, 2398 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 16:22:44,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-12-17 16:22:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 117. [2021-12-17 16:22:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 115 states have (on average 1.2347826086956522) internal successors, (142), 116 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 142 transitions. [2021-12-17 16:22:44,043 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 142 transitions. Word has length 56 [2021-12-17 16:22:44,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:44,043 INFO L470 AbstractCegarLoop]: Abstraction has 117 states and 142 transitions. [2021-12-17 16:22:44,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 13 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) [2021-12-17 16:22:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 142 transitions. [2021-12-17 16:22:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-17 16:22:44,044 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:44,044 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] [2021-12-17 16:22:44,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-17 16:22:44,044 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:44,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:44,045 INFO L85 PathProgramCache]: Analyzing trace with hash 897405148, now seen corresponding path program 1 times [2021-12-17 16:22:44,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:44,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502203269] [2021-12-17 16:22:44,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:44,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:44,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:44,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:44,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:44,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502203269] [2021-12-17 16:22:44,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502203269] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:44,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:44,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-17 16:22:44,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622206923] [2021-12-17 16:22:44,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:44,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-17 16:22:44,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:44,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-17 16:22:44,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-17 16:22:44,244 INFO L87 Difference]: Start difference. First operand 117 states and 142 transitions. Second operand has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 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) [2021-12-17 16:22:44,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:44,953 INFO L93 Difference]: Finished difference Result 326 states and 415 transitions. [2021-12-17 16:22:44,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-17 16:22:44,954 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 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 [2021-12-17 16:22:44,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:44,955 INFO L225 Difference]: With dead ends: 326 [2021-12-17 16:22:44,955 INFO L226 Difference]: Without dead ends: 317 [2021-12-17 16:22:44,955 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2021-12-17 16:22:44,956 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 756 mSDsluCounter, 2014 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:44,956 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 2275 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-17 16:22:44,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2021-12-17 16:22:44,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 127. [2021-12-17 16:22:44,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 125 states have (on average 1.232) internal successors, (154), 126 states have internal predecessors, (154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:44,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 154 transitions. [2021-12-17 16:22:44,974 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 154 transitions. Word has length 56 [2021-12-17 16:22:44,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:44,974 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 154 transitions. [2021-12-17 16:22:44,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.5) internal successors, (56), 16 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) [2021-12-17 16:22:44,975 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 154 transitions. [2021-12-17 16:22:44,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-17 16:22:44,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:44,975 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:44,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-17 16:22:44,975 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:44,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:44,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1985133879, now seen corresponding path program 1 times [2021-12-17 16:22:44,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:44,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817084338] [2021-12-17 16:22:44,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:44,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:45,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:45,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:45,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817084338] [2021-12-17 16:22:45,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817084338] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:45,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:45,200 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-17 16:22:45,200 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577971311] [2021-12-17 16:22:45,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:45,201 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-17 16:22:45,201 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:45,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-17 16:22:45,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-12-17 16:22:45,201 INFO L87 Difference]: Start difference. First operand 127 states and 154 transitions. Second operand has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:45,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:45,845 INFO L93 Difference]: Finished difference Result 387 states and 520 transitions. [2021-12-17 16:22:45,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-17 16:22:45,845 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2021-12-17 16:22:45,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:45,846 INFO L225 Difference]: With dead ends: 387 [2021-12-17 16:22:45,846 INFO L226 Difference]: Without dead ends: 371 [2021-12-17 16:22:45,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:22:45,848 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 814 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 2098 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:45,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 2098 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-17 16:22:45,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-17 16:22:45,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 104. [2021-12-17 16:22:45,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 103 states have (on average 1.2427184466019416) internal successors, (128), 103 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:45,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2021-12-17 16:22:45,860 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 57 [2021-12-17 16:22:45,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:45,860 INFO L470 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2021-12-17 16:22:45,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.384615384615385) internal successors, (57), 13 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:45,861 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2021-12-17 16:22:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-17 16:22:45,861 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:45,861 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:45,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-17 16:22:45,862 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:45,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:45,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1117882514, now seen corresponding path program 1 times [2021-12-17 16:22:45,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:45,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269160232] [2021-12-17 16:22:45,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:45,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:45,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:45,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:45,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:45,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269160232] [2021-12-17 16:22:45,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269160232] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:45,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:45,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 16:22:45,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140446946] [2021-12-17 16:22:45,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:45,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:22:45,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:45,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:22:45,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:22:45,895 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:45,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:45,985 INFO L93 Difference]: Finished difference Result 362 states and 506 transitions. [2021-12-17 16:22:45,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 16:22:45,986 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-12-17 16:22:45,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:45,987 INFO L225 Difference]: With dead ends: 362 [2021-12-17 16:22:45,987 INFO L226 Difference]: Without dead ends: 319 [2021-12-17 16:22:45,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-17 16:22:45,989 INFO L933 BasicCegarLoop]: 124 mSDtfsCounter, 526 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:45,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [526 Valid, 457 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:22:45,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2021-12-17 16:22:46,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 145. [2021-12-17 16:22:46,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 144 states have (on average 1.3055555555555556) internal successors, (188), 144 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 188 transitions. [2021-12-17 16:22:46,011 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 188 transitions. Word has length 75 [2021-12-17 16:22:46,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:46,012 INFO L470 AbstractCegarLoop]: Abstraction has 145 states and 188 transitions. [2021-12-17 16:22:46,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,012 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 188 transitions. [2021-12-17 16:22:46,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-17 16:22:46,012 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:46,013 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:46,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-17 16:22:46,013 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:46,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:46,013 INFO L85 PathProgramCache]: Analyzing trace with hash -1016465065, now seen corresponding path program 1 times [2021-12-17 16:22:46,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:46,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331610966] [2021-12-17 16:22:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:46,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:46,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:46,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:46,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331610966] [2021-12-17 16:22:46,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331610966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:46,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:46,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 16:22:46,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148321641] [2021-12-17 16:22:46,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:46,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:22:46,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:46,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:22:46,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:22:46,061 INFO L87 Difference]: Start difference. First operand 145 states and 188 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:46,160 INFO L93 Difference]: Finished difference Result 440 states and 618 transitions. [2021-12-17 16:22:46,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:22:46,161 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-17 16:22:46,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:46,162 INFO L225 Difference]: With dead ends: 440 [2021-12-17 16:22:46,162 INFO L226 Difference]: Without dead ends: 356 [2021-12-17 16:22:46,162 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 [2021-12-17 16:22:46,163 INFO L933 BasicCegarLoop]: 175 mSDtfsCounter, 292 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:46,163 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 417 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:22:46,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-12-17 16:22:46,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 227. [2021-12-17 16:22:46,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 1.3672566371681416) internal successors, (309), 226 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 309 transitions. [2021-12-17 16:22:46,200 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 309 transitions. Word has length 77 [2021-12-17 16:22:46,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:46,200 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 309 transitions. [2021-12-17 16:22:46,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,200 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 309 transitions. [2021-12-17 16:22:46,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-17 16:22:46,200 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:46,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:46,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-17 16:22:46,201 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:46,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:46,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1101947074, now seen corresponding path program 1 times [2021-12-17 16:22:46,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:46,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44085829] [2021-12-17 16:22:46,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:46,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:46,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:46,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:46,222 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:46,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44085829] [2021-12-17 16:22:46,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44085829] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:46,223 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:46,223 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:22:46,223 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071733241] [2021-12-17 16:22:46,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:46,223 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:22:46,224 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:46,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:22:46,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:22:46,224 INFO L87 Difference]: Start difference. First operand 227 states and 309 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:46,299 INFO L93 Difference]: Finished difference Result 533 states and 751 transitions. [2021-12-17 16:22:46,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:22:46,300 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-17 16:22:46,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:46,301 INFO L225 Difference]: With dead ends: 533 [2021-12-17 16:22:46,301 INFO L226 Difference]: Without dead ends: 367 [2021-12-17 16:22:46,301 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:22:46,302 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 50 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 287 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:46,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 287 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:22:46,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-12-17 16:22:46,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2021-12-17 16:22:46,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.3681318681318682) internal successors, (498), 364 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 498 transitions. [2021-12-17 16:22:46,365 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 498 transitions. Word has length 77 [2021-12-17 16:22:46,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:46,365 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 498 transitions. [2021-12-17 16:22:46,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,366 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 498 transitions. [2021-12-17 16:22:46,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-17 16:22:46,366 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:46,366 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:46,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-17 16:22:46,366 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:46,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:46,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1035453562, now seen corresponding path program 1 times [2021-12-17 16:22:46,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:46,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241912129] [2021-12-17 16:22:46,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:46,367 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:46,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:46,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:46,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241912129] [2021-12-17 16:22:46,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241912129] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:46,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:46,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:22:46,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288532033] [2021-12-17 16:22:46,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:46,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:22:46,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:46,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:22:46,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:22:46,399 INFO L87 Difference]: Start difference. First operand 365 states and 498 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:46,476 INFO L93 Difference]: Finished difference Result 671 states and 932 transitions. [2021-12-17 16:22:46,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:22:46,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-17 16:22:46,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:46,478 INFO L225 Difference]: With dead ends: 671 [2021-12-17 16:22:46,478 INFO L226 Difference]: Without dead ends: 367 [2021-12-17 16:22:46,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:22:46,479 INFO L933 BasicCegarLoop]: 129 mSDtfsCounter, 50 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:46,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 207 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:22:46,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2021-12-17 16:22:46,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 365. [2021-12-17 16:22:46,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 365 states, 364 states have (on average 1.3626373626373627) internal successors, (496), 364 states have internal predecessors, (496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365 states to 365 states and 496 transitions. [2021-12-17 16:22:46,543 INFO L78 Accepts]: Start accepts. Automaton has 365 states and 496 transitions. Word has length 77 [2021-12-17 16:22:46,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:46,543 INFO L470 AbstractCegarLoop]: Abstraction has 365 states and 496 transitions. [2021-12-17 16:22:46,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,544 INFO L276 IsEmpty]: Start isEmpty. Operand 365 states and 496 transitions. [2021-12-17 16:22:46,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-17 16:22:46,545 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:46,546 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:46,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-17 16:22:46,546 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:46,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:46,546 INFO L85 PathProgramCache]: Analyzing trace with hash -401787049, now seen corresponding path program 1 times [2021-12-17 16:22:46,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:46,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722523073] [2021-12-17 16:22:46,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:46,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:46,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:46,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:46,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722523073] [2021-12-17 16:22:46,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722523073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:46,586 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:46,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 16:22:46,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569069190] [2021-12-17 16:22:46,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:46,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:22:46,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:46,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:22:46,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:22:46,587 INFO L87 Difference]: Start difference. First operand 365 states and 496 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:46,743 INFO L93 Difference]: Finished difference Result 902 states and 1255 transitions. [2021-12-17 16:22:46,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:22:46,744 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-17 16:22:46,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:46,746 INFO L225 Difference]: With dead ends: 902 [2021-12-17 16:22:46,746 INFO L226 Difference]: Without dead ends: 749 [2021-12-17 16:22:46,746 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 [2021-12-17 16:22:46,747 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 287 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:46,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [287 Valid, 455 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:22:46,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2021-12-17 16:22:46,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 592. [2021-12-17 16:22:46,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 592 states, 591 states have (on average 1.3824027072758038) internal successors, (817), 591 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 592 states to 592 states and 817 transitions. [2021-12-17 16:22:46,866 INFO L78 Accepts]: Start accepts. Automaton has 592 states and 817 transitions. Word has length 77 [2021-12-17 16:22:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:46,867 INFO L470 AbstractCegarLoop]: Abstraction has 592 states and 817 transitions. [2021-12-17 16:22:46,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:46,867 INFO L276 IsEmpty]: Start isEmpty. Operand 592 states and 817 transitions. [2021-12-17 16:22:46,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-17 16:22:46,867 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:46,867 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:46,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-17 16:22:46,868 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:46,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:46,868 INFO L85 PathProgramCache]: Analyzing trace with hash 1826714967, now seen corresponding path program 1 times [2021-12-17 16:22:46,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:46,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424851604] [2021-12-17 16:22:46,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:46,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:46,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:46,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:46,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424851604] [2021-12-17 16:22:46,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424851604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:46,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:46,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 16:22:46,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107638643] [2021-12-17 16:22:46,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:46,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 16:22:46,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:46,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 16:22:46,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-17 16:22:46,907 INFO L87 Difference]: Start difference. First operand 592 states and 817 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:47,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:47,102 INFO L93 Difference]: Finished difference Result 1053 states and 1469 transitions. [2021-12-17 16:22:47,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 16:22:47,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-12-17 16:22:47,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:47,104 INFO L225 Difference]: With dead ends: 1053 [2021-12-17 16:22:47,104 INFO L226 Difference]: Without dead ends: 900 [2021-12-17 16:22:47,105 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 [2021-12-17 16:22:47,105 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 285 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:47,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 426 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:22:47,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-12-17 16:22:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 743. [2021-12-17 16:22:47,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 742 states have (on average 1.389487870619946) internal successors, (1031), 742 states have internal predecessors, (1031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:47,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1031 transitions. [2021-12-17 16:22:47,287 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1031 transitions. Word has length 77 [2021-12-17 16:22:47,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:47,287 INFO L470 AbstractCegarLoop]: Abstraction has 743 states and 1031 transitions. [2021-12-17 16:22:47,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:47,288 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1031 transitions. [2021-12-17 16:22:47,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-17 16:22:47,288 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:47,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:47,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-17 16:22:47,289 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:47,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:47,289 INFO L85 PathProgramCache]: Analyzing trace with hash 275968985, now seen corresponding path program 1 times [2021-12-17 16:22:47,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:47,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611719581] [2021-12-17 16:22:47,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:47,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:47,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:47,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:47,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611719581] [2021-12-17 16:22:47,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611719581] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:47,345 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:47,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:22:47,345 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387175306] [2021-12-17 16:22:47,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:47,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:22:47,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:47,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:22:47,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:22:47,347 INFO L87 Difference]: Start difference. First operand 743 states and 1031 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:47,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:47,730 INFO L93 Difference]: Finished difference Result 1864 states and 2602 transitions. [2021-12-17 16:22:47,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:22:47,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-12-17 16:22:47,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:47,733 INFO L225 Difference]: With dead ends: 1864 [2021-12-17 16:22:47,733 INFO L226 Difference]: Without dead ends: 1182 [2021-12-17 16:22:47,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:22:47,734 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 59 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 267 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:47,735 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 267 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:22:47,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2021-12-17 16:22:47,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1108. [2021-12-17 16:22:47,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1108 states, 1107 states have (on average 1.3794037940379404) internal successors, (1527), 1107 states have internal predecessors, (1527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:47,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1527 transitions. [2021-12-17 16:22:47,943 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1527 transitions. Word has length 78 [2021-12-17 16:22:47,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:47,943 INFO L470 AbstractCegarLoop]: Abstraction has 1108 states and 1527 transitions. [2021-12-17 16:22:47,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:47,943 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1527 transitions. [2021-12-17 16:22:47,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 16:22:47,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:47,944 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:47,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-17 16:22:47,944 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:47,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:47,945 INFO L85 PathProgramCache]: Analyzing trace with hash -163971304, now seen corresponding path program 1 times [2021-12-17 16:22:47,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:47,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086226935] [2021-12-17 16:22:47,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:47,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:47,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:47,975 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:47,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086226935] [2021-12-17 16:22:47,975 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086226935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:47,975 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:47,975 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:22:47,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729607706] [2021-12-17 16:22:47,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:47,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:22:47,976 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:47,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:22:47,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:22:47,976 INFO L87 Difference]: Start difference. First operand 1108 states and 1527 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:48,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:48,209 INFO L93 Difference]: Finished difference Result 2198 states and 3047 transitions. [2021-12-17 16:22:48,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:22:48,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-12-17 16:22:48,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:48,212 INFO L225 Difference]: With dead ends: 2198 [2021-12-17 16:22:48,213 INFO L226 Difference]: Without dead ends: 1151 [2021-12-17 16:22:48,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:22:48,215 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 67 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:48,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 202 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:22:48,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2021-12-17 16:22:48,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 1149. [2021-12-17 16:22:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 1148 states have (on average 1.363240418118467) internal successors, (1565), 1148 states have internal predecessors, (1565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:48,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1565 transitions. [2021-12-17 16:22:48,491 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1565 transitions. Word has length 79 [2021-12-17 16:22:48,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:48,491 INFO L470 AbstractCegarLoop]: Abstraction has 1149 states and 1565 transitions. [2021-12-17 16:22:48,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:48,492 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1565 transitions. [2021-12-17 16:22:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-12-17 16:22:48,492 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:48,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:48,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-17 16:22:48,492 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:48,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:48,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1432796505, now seen corresponding path program 1 times [2021-12-17 16:22:48,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:48,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233339281] [2021-12-17 16:22:48,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:48,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:48,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:48,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:48,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233339281] [2021-12-17 16:22:48,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233339281] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:48,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:48,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:22:48,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803408811] [2021-12-17 16:22:48,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:48,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:22:48,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:48,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:22:48,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:22:48,525 INFO L87 Difference]: Start difference. First operand 1149 states and 1565 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:48,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:48,932 INFO L93 Difference]: Finished difference Result 3213 states and 4369 transitions. [2021-12-17 16:22:48,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:22:48,932 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-12-17 16:22:48,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:48,937 INFO L225 Difference]: With dead ends: 3213 [2021-12-17 16:22:48,938 INFO L226 Difference]: Without dead ends: 2125 [2021-12-17 16:22:48,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:22:48,939 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 52 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:48,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 263 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:22:48,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2125 states. [2021-12-17 16:22:49,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2125 to 2011. [2021-12-17 16:22:49,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2011 states, 2010 states have (on average 1.3432835820895523) internal successors, (2700), 2010 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:49,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2011 states to 2011 states and 2700 transitions. [2021-12-17 16:22:49,371 INFO L78 Accepts]: Start accepts. Automaton has 2011 states and 2700 transitions. Word has length 79 [2021-12-17 16:22:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:49,371 INFO L470 AbstractCegarLoop]: Abstraction has 2011 states and 2700 transitions. [2021-12-17 16:22:49,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:49,371 INFO L276 IsEmpty]: Start isEmpty. Operand 2011 states and 2700 transitions. [2021-12-17 16:22:49,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-12-17 16:22:49,372 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:49,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:49,372 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-17 16:22:49,372 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:49,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:49,373 INFO L85 PathProgramCache]: Analyzing trace with hash -21206962, now seen corresponding path program 1 times [2021-12-17 16:22:49,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:49,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144087323] [2021-12-17 16:22:49,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:49,373 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:49,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:49,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:49,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144087323] [2021-12-17 16:22:49,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144087323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:49,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:49,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 16:22:49,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934201266] [2021-12-17 16:22:49,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:49,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 16:22:49,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:49,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 16:22:49,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:22:49,397 INFO L87 Difference]: Start difference. First operand 2011 states and 2700 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:50,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:50,112 INFO L93 Difference]: Finished difference Result 5687 states and 7578 transitions. [2021-12-17 16:22:50,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 16:22:50,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-12-17 16:22:50,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:50,121 INFO L225 Difference]: With dead ends: 5687 [2021-12-17 16:22:50,121 INFO L226 Difference]: Without dead ends: 3737 [2021-12-17 16:22:50,122 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 16:22:50,123 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 42 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:50,123 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 263 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:22:50,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3737 states. [2021-12-17 16:22:50,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3737 to 3511. [2021-12-17 16:22:50,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3511 states, 3510 states have (on average 1.3122507122507123) internal successors, (4606), 3510 states have internal predecessors, (4606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:50,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3511 states to 3511 states and 4606 transitions. [2021-12-17 16:22:50,856 INFO L78 Accepts]: Start accepts. Automaton has 3511 states and 4606 transitions. Word has length 80 [2021-12-17 16:22:50,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:50,856 INFO L470 AbstractCegarLoop]: Abstraction has 3511 states and 4606 transitions. [2021-12-17 16:22:50,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:50,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3511 states and 4606 transitions. [2021-12-17 16:22:50,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-17 16:22:50,857 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:50,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:50,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-17 16:22:50,859 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:50,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:50,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1223980109, now seen corresponding path program 1 times [2021-12-17 16:22:50,859 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:50,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942424228] [2021-12-17 16:22:50,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:50,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:50,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:50,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:50,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:50,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942424228] [2021-12-17 16:22:50,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942424228] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 16:22:50,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 16:22:50,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-17 16:22:50,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422432147] [2021-12-17 16:22:50,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 16:22:50,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 16:22:50,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:50,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 16:22:50,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-17 16:22:50,925 INFO L87 Difference]: Start difference. First operand 3511 states and 4606 transitions. Second operand has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:52,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:22:52,271 INFO L93 Difference]: Finished difference Result 5280 states and 6921 transitions. [2021-12-17 16:22:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 16:22:52,272 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 81 [2021-12-17 16:22:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:22:52,283 INFO L225 Difference]: With dead ends: 5280 [2021-12-17 16:22:52,283 INFO L226 Difference]: Without dead ends: 5278 [2021-12-17 16:22:52,284 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 [2021-12-17 16:22:52,284 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 201 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 632 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-17 16:22:52,285 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 632 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-17 16:22:52,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5278 states. [2021-12-17 16:22:53,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5278 to 3607. [2021-12-17 16:22:53,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3607 states, 3606 states have (on average 1.2928452579034941) internal successors, (4662), 3606 states have internal predecessors, (4662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3607 states to 3607 states and 4662 transitions. [2021-12-17 16:22:53,153 INFO L78 Accepts]: Start accepts. Automaton has 3607 states and 4662 transitions. Word has length 81 [2021-12-17 16:22:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:22:53,153 INFO L470 AbstractCegarLoop]: Abstraction has 3607 states and 4662 transitions. [2021-12-17 16:22:53,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.5) internal successors, (81), 6 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:22:53,154 INFO L276 IsEmpty]: Start isEmpty. Operand 3607 states and 4662 transitions. [2021-12-17 16:22:53,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-12-17 16:22:53,155 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:22:53,155 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:22:53,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-17 16:22:53,155 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:22:53,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:22:53,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1680108859, now seen corresponding path program 1 times [2021-12-17 16:22:53,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:22:53,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389377528] [2021-12-17 16:22:53,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:53,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:22:53,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:53,319 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:53,319 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:22:53,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389377528] [2021-12-17 16:22:53,319 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389377528] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 16:22:53,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103341848] [2021-12-17 16:22:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:22:53,320 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 16:22:53,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:22:53,321 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 16:22:53,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 16:22:53,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:22:53,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-17 16:22:53,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 16:22:54,212 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:54,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 16:22:55,192 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:22:55,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [103341848] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 16:22:55,192 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 16:22:55,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 26 [2021-12-17 16:22:55,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837930457] [2021-12-17 16:22:55,193 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 16:22:55,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-17 16:22:55,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:22:55,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-17 16:22:55,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2021-12-17 16:22:55,194 INFO L87 Difference]: Start difference. First operand 3607 states and 4662 transitions. Second operand has 27 states, 27 states have (on average 9.222222222222221) internal successors, (249), 26 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:23:30,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 16:23:30,266 INFO L93 Difference]: Finished difference Result 83261 states and 104826 transitions. [2021-12-17 16:23:30,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 348 states. [2021-12-17 16:23:30,266 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 9.222222222222221) internal successors, (249), 26 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-12-17 16:23:30,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 16:23:30,465 INFO L225 Difference]: With dead ends: 83261 [2021-12-17 16:23:30,465 INFO L226 Difference]: Without dead ends: 79715 [2021-12-17 16:23:30,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 558 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 369 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60021 ImplicationChecksByTransitivity, 12.6s TimeCoverageRelationStatistics Valid=14715, Invalid=122555, Unknown=0, NotChecked=0, Total=137270 [2021-12-17 16:23:30,507 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 7894 mSDsluCounter, 4272 mSDsCounter, 0 mSdLazyCounter, 3880 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7894 SdHoareTripleChecker+Valid, 4562 SdHoareTripleChecker+Invalid, 4254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 3880 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-17 16:23:30,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7894 Valid, 4562 Invalid, 4254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 3880 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-17 16:23:30,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79715 states. [2021-12-17 16:23:35,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79715 to 18887. [2021-12-17 16:23:35,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18887 states, 18886 states have (on average 1.2843376045748174) internal successors, (24256), 18886 states have internal predecessors, (24256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:23:35,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18887 states to 18887 states and 24256 transitions. [2021-12-17 16:23:35,948 INFO L78 Accepts]: Start accepts. Automaton has 18887 states and 24256 transitions. Word has length 103 [2021-12-17 16:23:35,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 16:23:35,949 INFO L470 AbstractCegarLoop]: Abstraction has 18887 states and 24256 transitions. [2021-12-17 16:23:35,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 9.222222222222221) internal successors, (249), 26 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-17 16:23:35,949 INFO L276 IsEmpty]: Start isEmpty. Operand 18887 states and 24256 transitions. [2021-12-17 16:23:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-17 16:23:35,953 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 16:23:35,953 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-17 16:23:35,982 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 16:23:36,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-17 16:23:36,176 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2021-12-17 16:23:36,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 16:23:36,176 INFO L85 PathProgramCache]: Analyzing trace with hash -448392738, now seen corresponding path program 1 times [2021-12-17 16:23:36,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 16:23:36,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623649134] [2021-12-17 16:23:36,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:23:36,176 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 16:23:36,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:23:36,399 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:23:36,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 16:23:36,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623649134] [2021-12-17 16:23:36,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623649134] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 16:23:36,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [753279434] [2021-12-17 16:23:36,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 16:23:36,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 16:23:36,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 16:23:36,410 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-17 16:23:36,411 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 16:23:36,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 16:23:36,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 540 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-17 16:23:36,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 16:23:37,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:23:37,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 16:23:38,106 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-17 16:23:38,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [753279434] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 16:23:38,107 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 16:23:38,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 31 [2021-12-17 16:23:38,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064963491] [2021-12-17 16:23:38,107 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 16:23:38,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-17 16:23:38,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 16:23:38,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-17 16:23:38,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=850, Unknown=0, NotChecked=0, Total=930 [2021-12-17 16:23:38,108 INFO L87 Difference]: Start difference. First operand 18887 states and 24256 transitions. Second operand has 31 states, 31 states have (on average 9.193548387096774) internal successors, (285), 31 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)