/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/product-lines/elevator_spec1_product26.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:44:23,346 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:44:23,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:44:23,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 23:44:23,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 23:44:23,403 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 23:44:23,404 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 23:44:23,405 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 23:44:23,406 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 23:44:23,406 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 23:44:23,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 23:44:23,408 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 23:44:23,408 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:44:23,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:44:23,409 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:44:23,410 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:44:23,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:44:23,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:44:23,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:44:23,413 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:44:23,414 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:44:23,415 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:44:23,415 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:44:23,416 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:44:23,418 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 23:44:23,418 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 23:44:23,418 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 23:44:23,418 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 23:44:23,419 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 23:44:23,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 23:44:23,420 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 23:44:23,420 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 23:44:23,421 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 23:44:23,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 23:44:23,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 23:44:23,422 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 23:44:23,422 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 23:44:23,422 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 23:44:23,423 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:44:23,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:44:23,424 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:44:23,424 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:44:23,437 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:44:23,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:44:23,438 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:44:23,438 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:44:23,439 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:44:23,439 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:44:23,439 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:44:23,439 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:44:23,439 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:44:23,439 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:44:23,439 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:44:23,440 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:44:23,440 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:44:23,440 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:44:23,440 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:44:23,440 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:44:23,440 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:44:23,440 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:44:23,440 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:44:23,441 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:44:23,441 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:44:23,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:44:23,441 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:44:23,441 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:44:23,441 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:44:23,441 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:44:23,441 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:44:23,441 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:44:23,442 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:44:23,442 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:44:23,442 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:44:23,442 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:44:23,442 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:44:23,442 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:44:23,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:44:23,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:44:23,631 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:44:23,632 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:44:23,632 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:44:23,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/elevator_spec1_product26.cil.c [2022-01-10 23:44:23,691 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0efcd8b/f2663b09d9144890b6271ca7ec80f49b/FLAG8560c1982 [2022-01-10 23:44:24,222 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:44:24,223 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product26.cil.c [2022-01-10 23:44:24,254 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0efcd8b/f2663b09d9144890b6271ca7ec80f49b/FLAG8560c1982 [2022-01-10 23:44:24,710 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/af0efcd8b/f2663b09d9144890b6271ca7ec80f49b [2022-01-10 23:44:24,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:44:24,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:44:24,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:44:24,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:44:24,727 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:44:24,728 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:44:24" (1/1) ... [2022-01-10 23:44:24,728 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7db8564 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:44:24, skipping insertion in model container [2022-01-10 23:44:24,728 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:44:24" (1/1) ... [2022-01-10 23:44:24,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:44:24,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:44:25,269 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product26.cil.c[55974,55987] [2022-01-10 23:44:25,296 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:44:25,309 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-01-10 23:44:25,336 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:44:25,396 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product26.cil.c[55974,55987] [2022-01-10 23:44:25,417 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:44:25,425 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:44:25,499 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/product-lines/elevator_spec1_product26.cil.c[55974,55987] [2022-01-10 23:44:25,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:44:25,527 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:44:25,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:44:25 WrapperNode [2022-01-10 23:44:25,528 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:44:25,529 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:44:25,529 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:44:25,529 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:44:25,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:44:25" (1/1) ... [2022-01-10 23:44:25,563 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:44:25" (1/1) ... [2022-01-10 23:44:25,687 INFO L137 Inliner]: procedures = 95, calls = 341, calls flagged for inlining = 193, calls inlined = 544, statements flattened = 17050 [2022-01-10 23:44:25,687 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:44:25,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:44:25,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:44:25,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:44:25,694 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:44:25" (1/1) ... [2022-01-10 23:44:25,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:44:25" (1/1) ... [2022-01-10 23:44:25,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:44:25" (1/1) ... [2022-01-10 23:44:25,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:44:25" (1/1) ... [2022-01-10 23:44:25,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:44:25" (1/1) ... [2022-01-10 23:44:25,970 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:44:25" (1/1) ... [2022-01-10 23:44:25,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:44:25" (1/1) ... [2022-01-10 23:44:26,085 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:44:26,086 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:44:26,086 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:44:26,087 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:44:26,088 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:44:25" (1/1) ... [2022-01-10 23:44:26,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:44:26,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:44:26,110 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 23:44:26,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 23:44:26,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:44:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:44:26,173 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:44:26,173 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:44:26,272 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:44:26,273 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:44:31,511 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:44:31,566 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:44:31,567 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 23:44:31,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:44:31 BoogieIcfgContainer [2022-01-10 23:44:31,572 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:44:31,573 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:44:31,573 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:44:31,574 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:44:31,576 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:44:31" (1/1) ... [2022-01-10 23:44:32,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:44:32 BasicIcfg [2022-01-10 23:44:32,753 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:44:32,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:44:32,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:44:32,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:44:32,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:44:24" (1/4) ... [2022-01-10 23:44:32,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7342ba65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:44:32, skipping insertion in model container [2022-01-10 23:44:32,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:44:25" (2/4) ... [2022-01-10 23:44:32,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7342ba65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:44:32, skipping insertion in model container [2022-01-10 23:44:32,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:44:31" (3/4) ... [2022-01-10 23:44:32,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7342ba65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:44:32, skipping insertion in model container [2022-01-10 23:44:32,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:44:32" (4/4) ... [2022-01-10 23:44:32,758 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product26.cil.cTransformedIcfg [2022-01-10 23:44:32,762 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:44:32,762 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-01-10 23:44:32,800 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:44:32,805 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 [2022-01-10 23:44:32,806 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-10 23:44:32,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 4913 states, 4907 states have (on average 1.8712044018748726) internal successors, (9182), 4912 states have internal predecessors, (9182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:32,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-01-10 23:44:32,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:32,883 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] [2022-01-10 23:44:32,885 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:32,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:32,889 INFO L85 PathProgramCache]: Analyzing trace with hash 821800307, now seen corresponding path program 1 times [2022-01-10 23:44:32,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:32,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415341227] [2022-01-10 23:44:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:32,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:33,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:33,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415341227] [2022-01-10 23:44:33,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415341227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:33,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:33,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:44:33,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536153525] [2022-01-10 23:44:33,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:33,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:44:33,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:33,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:44:33,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:44:33,252 INFO L87 Difference]: Start difference. First operand has 4913 states, 4907 states have (on average 1.8712044018748726) internal successors, (9182), 4912 states have internal predecessors, (9182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:33,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:33,831 INFO L93 Difference]: Finished difference Result 14644 states and 27386 transitions. [2022-01-10 23:44:33,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:44:33,834 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 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 46 [2022-01-10 23:44:33,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:33,880 INFO L225 Difference]: With dead ends: 14644 [2022-01-10 23:44:33,881 INFO L226 Difference]: Without dead ends: 9733 [2022-01-10 23:44:33,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:44:33,896 INFO L933 BasicCegarLoop]: 18199 mSDtfsCounter, 9143 mSDsluCounter, 9049 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9143 SdHoareTripleChecker+Valid, 27248 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:33,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9143 Valid, 27248 Invalid, 24 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:44:34,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9733 states. [2022-01-10 23:44:34,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9733 to 4902. [2022-01-10 23:44:34,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4897 states have (on average 1.8701245660608536) internal successors, (9158), 4901 states have internal predecessors, (9158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:34,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 9158 transitions. [2022-01-10 23:44:34,207 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 9158 transitions. Word has length 46 [2022-01-10 23:44:34,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:34,207 INFO L470 AbstractCegarLoop]: Abstraction has 4902 states and 9158 transitions. [2022-01-10 23:44:34,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:34,208 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 9158 transitions. [2022-01-10 23:44:34,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 23:44:34,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:34,210 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] [2022-01-10 23:44:34,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:44:34,210 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:34,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:34,213 INFO L85 PathProgramCache]: Analyzing trace with hash 322830279, now seen corresponding path program 1 times [2022-01-10 23:44:34,214 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:34,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143572805] [2022-01-10 23:44:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:34,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:34,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:34,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:34,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:34,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143572805] [2022-01-10 23:44:34,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143572805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:34,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:34,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:44:34,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328682220] [2022-01-10 23:44:34,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:34,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:44:34,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:34,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:44:34,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:44:34,336 INFO L87 Difference]: Start difference. First operand 4902 states and 9158 transitions. Second operand has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:34,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:34,707 INFO L93 Difference]: Finished difference Result 14549 states and 27194 transitions. [2022-01-10 23:44:34,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:44:34,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 53 [2022-01-10 23:44:34,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:34,744 INFO L225 Difference]: With dead ends: 14549 [2022-01-10 23:44:34,744 INFO L226 Difference]: Without dead ends: 9697 [2022-01-10 23:44:34,755 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 [2022-01-10 23:44:34,756 INFO L933 BasicCegarLoop]: 18062 mSDtfsCounter, 9045 mSDsluCounter, 8989 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9045 SdHoareTripleChecker+Valid, 27051 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:34,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9045 Valid, 27051 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:44:34,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9697 states. [2022-01-10 23:44:34,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9697 to 4902. [2022-01-10 23:44:34,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4897 states have (on average 1.865019399632428) internal successors, (9133), 4901 states have internal predecessors, (9133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 9133 transitions. [2022-01-10 23:44:34,900 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 9133 transitions. Word has length 53 [2022-01-10 23:44:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:34,901 INFO L470 AbstractCegarLoop]: Abstraction has 4902 states and 9133 transitions. [2022-01-10 23:44:34,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.666666666666668) internal successors, (53), 3 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:34,904 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 9133 transitions. [2022-01-10 23:44:34,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 23:44:34,912 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:34,912 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:44:34,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:44:34,912 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:34,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:34,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1033668108, now seen corresponding path program 1 times [2022-01-10 23:44:34,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:34,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580996459] [2022-01-10 23:44:34,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:34,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:34,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:34,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580996459] [2022-01-10 23:44:34,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580996459] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:34,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:34,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:44:34,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682689823] [2022-01-10 23:44:34,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:34,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:44:34,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:34,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:44:34,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:44:34,997 INFO L87 Difference]: Start difference. First operand 4902 states and 9133 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:35,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:35,170 INFO L93 Difference]: Finished difference Result 9733 states and 18168 transitions. [2022-01-10 23:44:35,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:44:35,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2022-01-10 23:44:35,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:35,197 INFO L225 Difference]: With dead ends: 9733 [2022-01-10 23:44:35,197 INFO L226 Difference]: Without dead ends: 4902 [2022-01-10 23:44:35,205 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 [2022-01-10 23:44:35,207 INFO L933 BasicCegarLoop]: 9114 mSDtfsCounter, 9122 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9122 SdHoareTripleChecker+Valid, 9121 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:35,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9122 Valid, 9121 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:44:35,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4902 states. [2022-01-10 23:44:35,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4902 to 4902. [2022-01-10 23:44:35,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4897 states have (on average 1.864610986318154) internal successors, (9131), 4901 states have internal predecessors, (9131), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:35,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 9131 transitions. [2022-01-10 23:44:35,305 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 9131 transitions. Word has length 56 [2022-01-10 23:44:35,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:35,306 INFO L470 AbstractCegarLoop]: Abstraction has 4902 states and 9131 transitions. [2022-01-10 23:44:35,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:35,307 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 9131 transitions. [2022-01-10 23:44:35,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-01-10 23:44:35,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:35,309 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] [2022-01-10 23:44:35,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:44:35,310 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:35,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:35,310 INFO L85 PathProgramCache]: Analyzing trace with hash 1463726362, now seen corresponding path program 1 times [2022-01-10 23:44:35,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:35,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758980750] [2022-01-10 23:44:35,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:35,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:35,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:35,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:35,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758980750] [2022-01-10 23:44:35,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758980750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:35,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:35,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:44:35,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637453697] [2022-01-10 23:44:35,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:35,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:44:35,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:35,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:44:35,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:44:35,380 INFO L87 Difference]: Start difference. First operand 4902 states and 9131 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:35,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:35,543 INFO L93 Difference]: Finished difference Result 9697 states and 18095 transitions. [2022-01-10 23:44:35,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:44:35,544 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2022-01-10 23:44:35,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:35,554 INFO L225 Difference]: With dead ends: 9697 [2022-01-10 23:44:35,554 INFO L226 Difference]: Without dead ends: 4902 [2022-01-10 23:44:35,562 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 [2022-01-10 23:44:35,568 INFO L933 BasicCegarLoop]: 9036 mSDtfsCounter, 9103 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9103 SdHoareTripleChecker+Valid, 9051 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:35,568 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9103 Valid, 9051 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:44:35,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4902 states. [2022-01-10 23:44:35,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4902 to 4902. [2022-01-10 23:44:35,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4897 states have (on average 1.8625689197467838) internal successors, (9121), 4901 states have internal predecessors, (9121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 9121 transitions. [2022-01-10 23:44:35,716 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 9121 transitions. Word has length 58 [2022-01-10 23:44:35,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:35,718 INFO L470 AbstractCegarLoop]: Abstraction has 4902 states and 9121 transitions. [2022-01-10 23:44:35,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:35,718 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 9121 transitions. [2022-01-10 23:44:35,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 23:44:35,720 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:35,720 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] [2022-01-10 23:44:35,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:44:35,721 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:35,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash -257137136, now seen corresponding path program 1 times [2022-01-10 23:44:35,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:35,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520204453] [2022-01-10 23:44:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:35,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:35,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:35,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:35,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520204453] [2022-01-10 23:44:35,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520204453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:35,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:35,788 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:44:35,788 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720044503] [2022-01-10 23:44:35,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:35,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:44:35,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:35,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:44:35,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:44:35,789 INFO L87 Difference]: Start difference. First operand 4902 states and 9121 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:35,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:35,939 INFO L93 Difference]: Finished difference Result 12173 states and 22706 transitions. [2022-01-10 23:44:35,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:44:35,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 60 [2022-01-10 23:44:35,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:35,959 INFO L225 Difference]: With dead ends: 12173 [2022-01-10 23:44:35,959 INFO L226 Difference]: Without dead ends: 9730 [2022-01-10 23:44:35,966 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 [2022-01-10 23:44:35,966 INFO L933 BasicCegarLoop]: 13640 mSDtfsCounter, 9099 mSDsluCounter, 9029 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9099 SdHoareTripleChecker+Valid, 22669 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:35,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9099 Valid, 22669 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:44:35,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9730 states. [2022-01-10 23:44:36,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9730 to 9730. [2022-01-10 23:44:36,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9730 states, 9725 states have (on average 1.8662210796915166) internal successors, (18149), 9729 states have internal predecessors, (18149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9730 states to 9730 states and 18149 transitions. [2022-01-10 23:44:36,233 INFO L78 Accepts]: Start accepts. Automaton has 9730 states and 18149 transitions. Word has length 60 [2022-01-10 23:44:36,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:36,235 INFO L470 AbstractCegarLoop]: Abstraction has 9730 states and 18149 transitions. [2022-01-10 23:44:36,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:36,235 INFO L276 IsEmpty]: Start isEmpty. Operand 9730 states and 18149 transitions. [2022-01-10 23:44:36,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 23:44:36,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:36,237 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] [2022-01-10 23:44:36,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:44:36,238 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:36,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:36,238 INFO L85 PathProgramCache]: Analyzing trace with hash 618708294, now seen corresponding path program 1 times [2022-01-10 23:44:36,238 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:36,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783399818] [2022-01-10 23:44:36,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:36,238 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:36,294 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:36,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:36,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783399818] [2022-01-10 23:44:36,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783399818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:36,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:36,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:44:36,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845317545] [2022-01-10 23:44:36,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:36,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:44:36,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:36,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:44:36,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:44:36,296 INFO L87 Difference]: Start difference. First operand 9730 states and 18149 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:36,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:36,522 INFO L93 Difference]: Finished difference Result 24190 states and 45186 transitions. [2022-01-10 23:44:36,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:44:36,523 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 23:44:36,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:36,562 INFO L225 Difference]: With dead ends: 24190 [2022-01-10 23:44:36,562 INFO L226 Difference]: Without dead ends: 19328 [2022-01-10 23:44:36,574 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 [2022-01-10 23:44:36,575 INFO L933 BasicCegarLoop]: 9118 mSDtfsCounter, 9055 mSDsluCounter, 9032 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9055 SdHoareTripleChecker+Valid, 18150 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:36,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9055 Valid, 18150 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:44:36,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19328 states. [2022-01-10 23:44:36,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19328 to 19326. [2022-01-10 23:44:37,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19326 states, 19321 states have (on average 1.868588582371513) internal successors, (36103), 19325 states have internal predecessors, (36103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:37,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19326 states to 19326 states and 36103 transitions. [2022-01-10 23:44:37,048 INFO L78 Accepts]: Start accepts. Automaton has 19326 states and 36103 transitions. Word has length 61 [2022-01-10 23:44:37,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:37,049 INFO L470 AbstractCegarLoop]: Abstraction has 19326 states and 36103 transitions. [2022-01-10 23:44:37,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:37,049 INFO L276 IsEmpty]: Start isEmpty. Operand 19326 states and 36103 transitions. [2022-01-10 23:44:37,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 23:44:37,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:37,053 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] [2022-01-10 23:44:37,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:44:37,053 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:37,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:37,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1120847206, now seen corresponding path program 1 times [2022-01-10 23:44:37,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:37,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273049092] [2022-01-10 23:44:37,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:37,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:37,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:37,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:37,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:37,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273049092] [2022-01-10 23:44:37,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273049092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:37,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:37,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:44:37,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941172487] [2022-01-10 23:44:37,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:37,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:44:37,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:37,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:44:37,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:44:37,243 INFO L87 Difference]: Start difference. First operand 19326 states and 36103 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:38,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:38,828 INFO L93 Difference]: Finished difference Result 115172 states and 215413 transitions. [2022-01-10 23:44:38,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 23:44:38,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2022-01-10 23:44:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:39,087 INFO L225 Difference]: With dead ends: 115172 [2022-01-10 23:44:39,088 INFO L226 Difference]: Without dead ends: 95875 [2022-01-10 23:44:39,133 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 [2022-01-10 23:44:39,133 INFO L933 BasicCegarLoop]: 36031 mSDtfsCounter, 27083 mSDsluCounter, 45003 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27083 SdHoareTripleChecker+Valid, 81034 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:39,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27083 Valid, 81034 Invalid, 56 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:44:39,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95875 states. [2022-01-10 23:44:40,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95875 to 19314. [2022-01-10 23:44:40,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19314 states, 19309 states have (on average 1.868921228442695) internal successors, (36087), 19313 states have internal predecessors, (36087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:40,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19314 states to 19314 states and 36087 transitions. [2022-01-10 23:44:40,106 INFO L78 Accepts]: Start accepts. Automaton has 19314 states and 36087 transitions. Word has length 61 [2022-01-10 23:44:40,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:40,106 INFO L470 AbstractCegarLoop]: Abstraction has 19314 states and 36087 transitions. [2022-01-10 23:44:40,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:40,107 INFO L276 IsEmpty]: Start isEmpty. Operand 19314 states and 36087 transitions. [2022-01-10 23:44:40,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 23:44:40,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:40,110 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] [2022-01-10 23:44:40,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 23:44:40,110 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:40,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:40,111 INFO L85 PathProgramCache]: Analyzing trace with hash -145994403, now seen corresponding path program 1 times [2022-01-10 23:44:40,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:40,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34067759] [2022-01-10 23:44:40,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:40,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:40,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:40,152 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:40,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34067759] [2022-01-10 23:44:40,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34067759] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:40,153 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:40,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:44:40,153 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475401409] [2022-01-10 23:44:40,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:40,153 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:44:40,153 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:40,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:44:40,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:44:40,154 INFO L87 Difference]: Start difference. First operand 19314 states and 36087 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:41,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:41,540 INFO L93 Difference]: Finished difference Result 76968 states and 143898 transitions. [2022-01-10 23:44:41,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:44:41,541 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 23:44:41,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:41,646 INFO L225 Difference]: With dead ends: 76968 [2022-01-10 23:44:41,646 INFO L226 Difference]: Without dead ends: 57677 [2022-01-10 23:44:41,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:44:41,670 INFO L933 BasicCegarLoop]: 9113 mSDtfsCounter, 27113 mSDsluCounter, 27063 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27113 SdHoareTripleChecker+Valid, 36176 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:41,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27113 Valid, 36176 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:44:41,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57677 states. [2022-01-10 23:44:42,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57677 to 19322. [2022-01-10 23:44:42,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19322 states, 19317 states have (on average 1.868406067194699) internal successors, (36092), 19321 states have internal predecessors, (36092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:42,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19322 states to 19322 states and 36092 transitions. [2022-01-10 23:44:42,357 INFO L78 Accepts]: Start accepts. Automaton has 19322 states and 36092 transitions. Word has length 63 [2022-01-10 23:44:42,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:42,357 INFO L470 AbstractCegarLoop]: Abstraction has 19322 states and 36092 transitions. [2022-01-10 23:44:42,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:42,358 INFO L276 IsEmpty]: Start isEmpty. Operand 19322 states and 36092 transitions. [2022-01-10 23:44:42,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 23:44:42,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:42,361 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] [2022-01-10 23:44:42,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:44:42,361 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:42,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:42,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1886150585, now seen corresponding path program 1 times [2022-01-10 23:44:42,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:42,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816437394] [2022-01-10 23:44:42,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:42,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:42,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:42,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:42,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816437394] [2022-01-10 23:44:42,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816437394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:42,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:42,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:44:42,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689065655] [2022-01-10 23:44:42,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:42,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:44:42,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:42,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:44:42,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:44:42,458 INFO L87 Difference]: Start difference. First operand 19322 states and 36092 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:44,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:44,304 INFO L93 Difference]: Finished difference Result 96037 states and 179587 transitions. [2022-01-10 23:44:44,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:44:44,304 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2022-01-10 23:44:44,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:44,443 INFO L225 Difference]: With dead ends: 96037 [2022-01-10 23:44:44,443 INFO L226 Difference]: Without dead ends: 76731 [2022-01-10 23:44:44,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:44:44,477 INFO L933 BasicCegarLoop]: 35999 mSDtfsCounter, 36152 mSDsluCounter, 26993 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36152 SdHoareTripleChecker+Valid, 62992 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:44,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36152 Valid, 62992 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:44:44,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76731 states. [2022-01-10 23:44:45,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76731 to 19314. [2022-01-10 23:44:45,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19314 states, 19309 states have (on average 1.8684551245533172) internal successors, (36078), 19313 states have internal predecessors, (36078), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:45,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19314 states to 19314 states and 36078 transitions. [2022-01-10 23:44:45,486 INFO L78 Accepts]: Start accepts. Automaton has 19314 states and 36078 transitions. Word has length 64 [2022-01-10 23:44:45,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:45,486 INFO L470 AbstractCegarLoop]: Abstraction has 19314 states and 36078 transitions. [2022-01-10 23:44:45,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:45,486 INFO L276 IsEmpty]: Start isEmpty. Operand 19314 states and 36078 transitions. [2022-01-10 23:44:45,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 23:44:45,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:45,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:44:45,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 23:44:45,491 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:45,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:45,491 INFO L85 PathProgramCache]: Analyzing trace with hash 326139029, now seen corresponding path program 1 times [2022-01-10 23:44:45,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:45,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545149002] [2022-01-10 23:44:45,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:45,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:45,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:45,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:45,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545149002] [2022-01-10 23:44:45,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545149002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:45,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:45,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:44:45,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427254882] [2022-01-10 23:44:45,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:45,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:44:45,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:45,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:44:45,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:44:45,554 INFO L87 Difference]: Start difference. First operand 19314 states and 36078 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:47,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:47,156 INFO L93 Difference]: Finished difference Result 76773 states and 143563 transitions. [2022-01-10 23:44:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:44:47,157 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 65 [2022-01-10 23:44:47,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:47,371 INFO L225 Difference]: With dead ends: 76773 [2022-01-10 23:44:47,371 INFO L226 Difference]: Without dead ends: 57506 [2022-01-10 23:44:47,392 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:44:47,393 INFO L933 BasicCegarLoop]: 9050 mSDtfsCounter, 36029 mSDsluCounter, 26910 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36029 SdHoareTripleChecker+Valid, 35960 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:47,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36029 Valid, 35960 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:44:47,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57506 states. [2022-01-10 23:44:48,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57506 to 19340. [2022-01-10 23:44:48,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19340 states, 19335 states have (on average 1.8679079389707784) internal successors, (36116), 19339 states have internal predecessors, (36116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:48,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19340 states to 19340 states and 36116 transitions. [2022-01-10 23:44:48,076 INFO L78 Accepts]: Start accepts. Automaton has 19340 states and 36116 transitions. Word has length 65 [2022-01-10 23:44:48,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:48,076 INFO L470 AbstractCegarLoop]: Abstraction has 19340 states and 36116 transitions. [2022-01-10 23:44:48,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:48,076 INFO L276 IsEmpty]: Start isEmpty. Operand 19340 states and 36116 transitions. [2022-01-10 23:44:48,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 23:44:48,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:48,080 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] [2022-01-10 23:44:48,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 23:44:48,080 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:48,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:48,080 INFO L85 PathProgramCache]: Analyzing trace with hash 803023461, now seen corresponding path program 1 times [2022-01-10 23:44:48,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:48,081 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593362908] [2022-01-10 23:44:48,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:48,081 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:48,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:48,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:48,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:48,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593362908] [2022-01-10 23:44:48,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593362908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:48,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:48,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:44:48,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839499978] [2022-01-10 23:44:48,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:48,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:44:48,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:48,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:44:48,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:44:48,131 INFO L87 Difference]: Start difference. First operand 19340 states and 36116 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:49,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:49,230 INFO L93 Difference]: Finished difference Result 43282 states and 80897 transitions. [2022-01-10 23:44:49,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:44:49,230 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 67 [2022-01-10 23:44:49,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:49,276 INFO L225 Difference]: With dead ends: 43282 [2022-01-10 23:44:49,276 INFO L226 Difference]: Without dead ends: 28799 [2022-01-10 23:44:49,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:44:49,288 INFO L933 BasicCegarLoop]: 9043 mSDtfsCounter, 26935 mSDsluCounter, 9031 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26935 SdHoareTripleChecker+Valid, 18074 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:49,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26935 Valid, 18074 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:44:49,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28799 states. [2022-01-10 23:44:50,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28799 to 19260. [2022-01-10 23:44:50,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19260 states, 19255 states have (on average 1.8686574915606335) internal successors, (35981), 19259 states have internal predecessors, (35981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:50,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19260 states to 19260 states and 35981 transitions. [2022-01-10 23:44:50,154 INFO L78 Accepts]: Start accepts. Automaton has 19260 states and 35981 transitions. Word has length 67 [2022-01-10 23:44:50,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:50,155 INFO L470 AbstractCegarLoop]: Abstraction has 19260 states and 35981 transitions. [2022-01-10 23:44:50,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:50,155 INFO L276 IsEmpty]: Start isEmpty. Operand 19260 states and 35981 transitions. [2022-01-10 23:44:50,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 23:44:50,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:50,159 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] [2022-01-10 23:44:50,159 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 23:44:50,159 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:50,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:50,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1618860316, now seen corresponding path program 1 times [2022-01-10 23:44:50,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:50,159 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268280846] [2022-01-10 23:44:50,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:50,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:50,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:50,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268280846] [2022-01-10 23:44:50,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268280846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:50,220 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:50,220 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:44:50,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087212155] [2022-01-10 23:44:50,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:50,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:44:50,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:50,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:44:50,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:44:50,221 INFO L87 Difference]: Start difference. First operand 19260 states and 35981 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:50,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:50,664 INFO L93 Difference]: Finished difference Result 28835 states and 53887 transitions. [2022-01-10 23:44:50,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:44:50,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 23:44:50,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:50,678 INFO L225 Difference]: With dead ends: 28835 [2022-01-10 23:44:50,678 INFO L226 Difference]: Without dead ends: 9676 [2022-01-10 23:44:50,686 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:44:50,687 INFO L933 BasicCegarLoop]: 9049 mSDtfsCounter, 27013 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27013 SdHoareTripleChecker+Valid, 9088 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:50,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27013 Valid, 9088 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:44:50,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9676 states. [2022-01-10 23:44:50,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9676 to 9676. [2022-01-10 23:44:50,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9676 states, 9672 states have (on average 1.8664185277088503) internal successors, (18052), 9675 states have internal predecessors, (18052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:50,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9676 states to 9676 states and 18052 transitions. [2022-01-10 23:44:50,994 INFO L78 Accepts]: Start accepts. Automaton has 9676 states and 18052 transitions. Word has length 68 [2022-01-10 23:44:50,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:50,995 INFO L470 AbstractCegarLoop]: Abstraction has 9676 states and 18052 transitions. [2022-01-10 23:44:50,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:50,995 INFO L276 IsEmpty]: Start isEmpty. Operand 9676 states and 18052 transitions. [2022-01-10 23:44:50,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:44:50,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:50,997 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] [2022-01-10 23:44:50,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 23:44:50,998 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:50,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:50,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1476040353, now seen corresponding path program 1 times [2022-01-10 23:44:50,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:50,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073668881] [2022-01-10 23:44:50,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:50,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:51,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:51,039 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:51,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073668881] [2022-01-10 23:44:51,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073668881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:51,039 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:51,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:44:51,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977246550] [2022-01-10 23:44:51,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:51,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:44:51,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:51,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:44:51,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:44:51,040 INFO L87 Difference]: Start difference. First operand 9676 states and 18052 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:51,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:51,407 INFO L93 Difference]: Finished difference Result 19239 states and 35938 transitions. [2022-01-10 23:44:51,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 23:44:51,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 23:44:51,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:51,422 INFO L225 Difference]: With dead ends: 19239 [2022-01-10 23:44:51,422 INFO L226 Difference]: Without dead ends: 9664 [2022-01-10 23:44:51,430 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:44:51,431 INFO L933 BasicCegarLoop]: 9031 mSDtfsCounter, 17980 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17980 SdHoareTripleChecker+Valid, 9122 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:51,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17980 Valid, 9122 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:44:51,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9664 states. [2022-01-10 23:44:51,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9664 to 9664. [2022-01-10 23:44:51,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9664 states, 9660 states have (on average 1.8664596273291925) internal successors, (18030), 9663 states have internal predecessors, (18030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:51,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9664 states to 9664 states and 18030 transitions. [2022-01-10 23:44:51,753 INFO L78 Accepts]: Start accepts. Automaton has 9664 states and 18030 transitions. Word has length 70 [2022-01-10 23:44:51,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:51,753 INFO L470 AbstractCegarLoop]: Abstraction has 9664 states and 18030 transitions. [2022-01-10 23:44:51,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:51,753 INFO L276 IsEmpty]: Start isEmpty. Operand 9664 states and 18030 transitions. [2022-01-10 23:44:51,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 23:44:51,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:51,756 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] [2022-01-10 23:44:51,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 23:44:51,756 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:51,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:51,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1902545029, now seen corresponding path program 1 times [2022-01-10 23:44:51,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:51,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422654865] [2022-01-10 23:44:51,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:51,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:51,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:51,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:51,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422654865] [2022-01-10 23:44:51,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422654865] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:51,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:51,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 23:44:51,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692189930] [2022-01-10 23:44:51,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:51,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 23:44:51,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:51,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 23:44:51,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 23:44:51,866 INFO L87 Difference]: Start difference. First operand 9664 states and 18030 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:52,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:52,300 INFO L93 Difference]: Finished difference Result 19265 states and 35968 transitions. [2022-01-10 23:44:52,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:44:52,301 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2022-01-10 23:44:52,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:52,317 INFO L225 Difference]: With dead ends: 19265 [2022-01-10 23:44:52,317 INFO L226 Difference]: Without dead ends: 9726 [2022-01-10 23:44:52,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:44:52,327 INFO L933 BasicCegarLoop]: 9057 mSDtfsCounter, 26998 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26998 SdHoareTripleChecker+Valid, 9192 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:52,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26998 Valid, 9192 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:44:52,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9726 states. [2022-01-10 23:44:52,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9726 to 9664. [2022-01-10 23:44:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9664 states, 9660 states have (on average 1.8662525879917184) internal successors, (18028), 9663 states have internal predecessors, (18028), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:52,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9664 states to 9664 states and 18028 transitions. [2022-01-10 23:44:52,751 INFO L78 Accepts]: Start accepts. Automaton has 9664 states and 18028 transitions. Word has length 70 [2022-01-10 23:44:52,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:52,751 INFO L470 AbstractCegarLoop]: Abstraction has 9664 states and 18028 transitions. [2022-01-10 23:44:52,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 6 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:52,751 INFO L276 IsEmpty]: Start isEmpty. Operand 9664 states and 18028 transitions. [2022-01-10 23:44:52,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-01-10 23:44:52,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:52,753 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] [2022-01-10 23:44:52,754 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 23:44:52,754 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:52,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:52,754 INFO L85 PathProgramCache]: Analyzing trace with hash 1902319572, now seen corresponding path program 1 times [2022-01-10 23:44:52,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:52,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104290178] [2022-01-10 23:44:52,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:52,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:52,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:52,801 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:52,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104290178] [2022-01-10 23:44:52,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104290178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:52,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:52,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 23:44:52,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856425526] [2022-01-10 23:44:52,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:52,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:44:52,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:52,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:44:52,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:44:52,803 INFO L87 Difference]: Start difference. First operand 9664 states and 18028 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:54,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:54,077 INFO L93 Difference]: Finished difference Result 38369 states and 71698 transitions. [2022-01-10 23:44:54,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 23:44:54,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2022-01-10 23:44:54,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:54,128 INFO L225 Difference]: With dead ends: 38369 [2022-01-10 23:44:54,128 INFO L226 Difference]: Without dead ends: 28830 [2022-01-10 23:44:54,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-01-10 23:44:54,138 INFO L933 BasicCegarLoop]: 9058 mSDtfsCounter, 53831 mSDsluCounter, 27017 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53831 SdHoareTripleChecker+Valid, 36075 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:54,139 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53831 Valid, 36075 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:44:54,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28830 states. [2022-01-10 23:44:54,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28830 to 9684. [2022-01-10 23:44:54,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9684 states, 9680 states have (on average 1.8652892561983472) internal successors, (18056), 9683 states have internal predecessors, (18056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:54,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9684 states to 9684 states and 18056 transitions. [2022-01-10 23:44:54,572 INFO L78 Accepts]: Start accepts. Automaton has 9684 states and 18056 transitions. Word has length 71 [2022-01-10 23:44:54,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:54,572 INFO L470 AbstractCegarLoop]: Abstraction has 9684 states and 18056 transitions. [2022-01-10 23:44:54,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 7 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:54,572 INFO L276 IsEmpty]: Start isEmpty. Operand 9684 states and 18056 transitions. [2022-01-10 23:44:54,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:44:54,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:54,574 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:44:54,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 23:44:54,574 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:54,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:54,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1277049874, now seen corresponding path program 1 times [2022-01-10 23:44:54,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:54,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93228385] [2022-01-10 23:44:54,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:54,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:54,634 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:54,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93228385] [2022-01-10 23:44:54,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93228385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:54,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:54,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 23:44:54,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180343796] [2022-01-10 23:44:54,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:54,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 23:44:54,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:54,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 23:44:54,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:44:54,635 INFO L87 Difference]: Start difference. First operand 9684 states and 18056 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:56,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:56,724 INFO L93 Difference]: Finished difference Result 57473 states and 107426 transitions. [2022-01-10 23:44:56,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 23:44:56,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:44:56,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:56,807 INFO L225 Difference]: With dead ends: 57473 [2022-01-10 23:44:56,807 INFO L226 Difference]: Without dead ends: 47934 [2022-01-10 23:44:56,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-01-10 23:44:56,830 INFO L933 BasicCegarLoop]: 17992 mSDtfsCounter, 71804 mSDsluCounter, 53846 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71804 SdHoareTripleChecker+Valid, 71838 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:56,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71804 Valid, 71838 Invalid, 95 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:44:56,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47934 states. [2022-01-10 23:44:57,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47934 to 9706. [2022-01-10 23:44:57,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9706 states, 9702 states have (on average 1.8641517212945784) internal successors, (18086), 9705 states have internal predecessors, (18086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9706 states to 9706 states and 18086 transitions. [2022-01-10 23:44:57,516 INFO L78 Accepts]: Start accepts. Automaton has 9706 states and 18086 transitions. Word has length 72 [2022-01-10 23:44:57,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:57,516 INFO L470 AbstractCegarLoop]: Abstraction has 9706 states and 18086 transitions. [2022-01-10 23:44:57,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 8 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 9706 states and 18086 transitions. [2022-01-10 23:44:57,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 23:44:57,518 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:57,518 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] [2022-01-10 23:44:57,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 23:44:57,519 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:57,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:57,519 INFO L85 PathProgramCache]: Analyzing trace with hash -104697257, now seen corresponding path program 1 times [2022-01-10 23:44:57,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:57,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594474312] [2022-01-10 23:44:57,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:57,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:57,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:57,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:57,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:57,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594474312] [2022-01-10 23:44:57,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594474312] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:57,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:57,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 23:44:57,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353577590] [2022-01-10 23:44:57,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:57,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:44:57,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:57,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:44:57,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:44:57,580 INFO L87 Difference]: Start difference. First operand 9706 states and 18086 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:58,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:44:58,019 INFO L93 Difference]: Finished difference Result 17008 states and 31692 transitions. [2022-01-10 23:44:58,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:44:58,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2022-01-10 23:44:58,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:44:58,035 INFO L225 Difference]: With dead ends: 17008 [2022-01-10 23:44:58,035 INFO L226 Difference]: Without dead ends: 9736 [2022-01-10 23:44:58,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:44:58,044 INFO L933 BasicCegarLoop]: 9005 mSDtfsCounter, 9158 mSDsluCounter, 9005 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9158 SdHoareTripleChecker+Valid, 18010 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:44:58,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9158 Valid, 18010 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:44:58,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9736 states. [2022-01-10 23:44:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9736 to 9703. [2022-01-10 23:44:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9703 states, 9699 states have (on average 1.8633879781420766) internal successors, (18073), 9702 states have internal predecessors, (18073), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:58,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9703 states to 9703 states and 18073 transitions. [2022-01-10 23:44:58,461 INFO L78 Accepts]: Start accepts. Automaton has 9703 states and 18073 transitions. Word has length 72 [2022-01-10 23:44:58,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:44:58,461 INFO L470 AbstractCegarLoop]: Abstraction has 9703 states and 18073 transitions. [2022-01-10 23:44:58,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:44:58,461 INFO L276 IsEmpty]: Start isEmpty. Operand 9703 states and 18073 transitions. [2022-01-10 23:44:58,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 23:44:58,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:44:58,464 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] [2022-01-10 23:44:58,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 23:44:58,464 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:44:58,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:44:58,464 INFO L85 PathProgramCache]: Analyzing trace with hash -1276543204, now seen corresponding path program 1 times [2022-01-10 23:44:58,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:44:58,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458244155] [2022-01-10 23:44:58,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:44:58,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:44:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:44:58,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:44:58,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:44:58,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458244155] [2022-01-10 23:44:58,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458244155] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:44:58,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:44:58,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:44:58,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531249878] [2022-01-10 23:44:58,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:44:58,520 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:44:58,520 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:44:58,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:44:58,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:44:58,521 INFO L87 Difference]: Start difference. First operand 9703 states and 18073 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:00,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:45:00,313 INFO L93 Difference]: Finished difference Result 24788 states and 46191 transitions. [2022-01-10 23:45:00,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:45:00,314 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 73 [2022-01-10 23:45:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:45:00,343 INFO L225 Difference]: With dead ends: 24788 [2022-01-10 23:45:00,343 INFO L226 Difference]: Without dead ends: 18841 [2022-01-10 23:45:00,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:45:00,353 INFO L933 BasicCegarLoop]: 8821 mSDtfsCounter, 20368 mSDsluCounter, 29984 mSDsCounter, 0 mSdLazyCounter, 1068 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20368 SdHoareTripleChecker+Valid, 38805 SdHoareTripleChecker+Invalid, 1264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 23:45:00,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20368 Valid, 38805 Invalid, 1264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [196 Valid, 1068 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 23:45:00,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18841 states. [2022-01-10 23:45:00,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18841 to 13359. [2022-01-10 23:45:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13359 states, 13355 states have (on average 1.8456757768625982) internal successors, (24649), 13358 states have internal predecessors, (24649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:00,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13359 states to 13359 states and 24649 transitions. [2022-01-10 23:45:00,968 INFO L78 Accepts]: Start accepts. Automaton has 13359 states and 24649 transitions. Word has length 73 [2022-01-10 23:45:00,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:45:00,968 INFO L470 AbstractCegarLoop]: Abstraction has 13359 states and 24649 transitions. [2022-01-10 23:45:00,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:00,968 INFO L276 IsEmpty]: Start isEmpty. Operand 13359 states and 24649 transitions. [2022-01-10 23:45:00,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 23:45:00,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:45:00,970 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] [2022-01-10 23:45:00,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 23:45:00,971 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:45:00,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:45:00,971 INFO L85 PathProgramCache]: Analyzing trace with hash -1137475665, now seen corresponding path program 1 times [2022-01-10 23:45:00,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:45:00,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724986142] [2022-01-10 23:45:00,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:45:00,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:45:01,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:45:01,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:45:01,278 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:45:01,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724986142] [2022-01-10 23:45:01,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724986142] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:45:01,278 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:45:01,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:45:01,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905379243] [2022-01-10 23:45:01,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:45:01,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:45:01,279 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:45:01,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:45:01,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:45:01,279 INFO L87 Difference]: Start difference. First operand 13359 states and 24649 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:02,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:45:02,355 INFO L93 Difference]: Finished difference Result 34025 states and 63241 transitions. [2022-01-10 23:45:02,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:45:02,356 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 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 74 [2022-01-10 23:45:02,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:45:02,404 INFO L225 Difference]: With dead ends: 34025 [2022-01-10 23:45:02,404 INFO L226 Difference]: Without dead ends: 24996 [2022-01-10 23:45:02,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:45:02,422 INFO L933 BasicCegarLoop]: 8402 mSDtfsCounter, 7916 mSDsluCounter, 7669 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7916 SdHoareTripleChecker+Valid, 16071 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:45:02,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7916 Valid, 16071 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:45:02,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24996 states. [2022-01-10 23:45:03,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24996 to 18985. [2022-01-10 23:45:03,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18985 states, 18981 states have (on average 1.850324008218745) internal successors, (35121), 18984 states have internal predecessors, (35121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:03,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18985 states to 18985 states and 35121 transitions. [2022-01-10 23:45:03,320 INFO L78 Accepts]: Start accepts. Automaton has 18985 states and 35121 transitions. Word has length 74 [2022-01-10 23:45:03,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:45:03,320 INFO L470 AbstractCegarLoop]: Abstraction has 18985 states and 35121 transitions. [2022-01-10 23:45:03,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 2 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:03,320 INFO L276 IsEmpty]: Start isEmpty. Operand 18985 states and 35121 transitions. [2022-01-10 23:45:03,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-01-10 23:45:03,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:45:03,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:45:03,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 23:45:03,325 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:45:03,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:45:03,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1004078775, now seen corresponding path program 1 times [2022-01-10 23:45:03,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:45:03,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367213718] [2022-01-10 23:45:03,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:45:03,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:45:03,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:45:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:45:03,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:45:03,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367213718] [2022-01-10 23:45:03,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367213718] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:45:03,376 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:45:03,376 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:45:03,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482371962] [2022-01-10 23:45:03,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:45:03,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:45:03,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:45:03,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:45:03,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:45:03,377 INFO L87 Difference]: Start difference. First operand 18985 states and 35121 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:04,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:45:04,883 INFO L93 Difference]: Finished difference Result 37380 states and 68699 transitions. [2022-01-10 23:45:04,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 23:45:04,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 88 [2022-01-10 23:45:04,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:45:04,917 INFO L225 Difference]: With dead ends: 37380 [2022-01-10 23:45:04,917 INFO L226 Difference]: Without dead ends: 21211 [2022-01-10 23:45:04,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:45:04,929 INFO L933 BasicCegarLoop]: 9795 mSDtfsCounter, 14720 mSDsluCounter, 9722 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14720 SdHoareTripleChecker+Valid, 19517 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 23:45:04,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14720 Valid, 19517 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 23:45:04,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21211 states. [2022-01-10 23:45:05,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21211 to 16003. [2022-01-10 23:45:05,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16003 states, 15999 states have (on average 1.8335520970060628) internal successors, (29335), 16002 states have internal predecessors, (29335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:05,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16003 states to 16003 states and 29335 transitions. [2022-01-10 23:45:05,857 INFO L78 Accepts]: Start accepts. Automaton has 16003 states and 29335 transitions. Word has length 88 [2022-01-10 23:45:05,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:45:05,857 INFO L470 AbstractCegarLoop]: Abstraction has 16003 states and 29335 transitions. [2022-01-10 23:45:05,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 4 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:05,857 INFO L276 IsEmpty]: Start isEmpty. Operand 16003 states and 29335 transitions. [2022-01-10 23:45:05,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-01-10 23:45:05,860 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:45:05,861 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:45:05,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 23:45:05,861 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:45:05,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:45:05,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1033346800, now seen corresponding path program 1 times [2022-01-10 23:45:05,861 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:45:05,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638253969] [2022-01-10 23:45:05,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:45:05,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:45:05,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:45:05,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:45:05,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:45:05,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638253969] [2022-01-10 23:45:05,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638253969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:45:05,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:45:05,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:45:05,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501544181] [2022-01-10 23:45:05,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:45:05,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:45:05,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:45:05,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:45:05,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:45:05,915 INFO L87 Difference]: Start difference. First operand 16003 states and 29335 transitions. Second operand has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:09,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:45:09,826 INFO L93 Difference]: Finished difference Result 64785 states and 118039 transitions. [2022-01-10 23:45:09,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:45:09,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2022-01-10 23:45:09,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:45:09,914 INFO L225 Difference]: With dead ends: 64785 [2022-01-10 23:45:09,914 INFO L226 Difference]: Without dead ends: 48986 [2022-01-10 23:45:09,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 23:45:09,945 INFO L933 BasicCegarLoop]: 12702 mSDtfsCounter, 25449 mSDsluCounter, 19131 mSDsCounter, 0 mSdLazyCounter, 997 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25449 SdHoareTripleChecker+Valid, 31833 SdHoareTripleChecker+Invalid, 1136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 23:45:09,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25449 Valid, 31833 Invalid, 1136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 997 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 23:45:09,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48986 states. [2022-01-10 23:45:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48986 to 16039. [2022-01-10 23:45:11,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16039 states, 16035 states have (on average 1.8316806984720924) internal successors, (29371), 16038 states have internal predecessors, (29371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:11,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16039 states to 16039 states and 29371 transitions. [2022-01-10 23:45:11,248 INFO L78 Accepts]: Start accepts. Automaton has 16039 states and 29371 transitions. Word has length 89 [2022-01-10 23:45:11,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:45:11,249 INFO L470 AbstractCegarLoop]: Abstraction has 16039 states and 29371 transitions. [2022-01-10 23:45:11,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.8) internal successors, (89), 4 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 16039 states and 29371 transitions. [2022-01-10 23:45:11,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 23:45:11,252 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:45:11,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:45:11,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 23:45:11,253 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:45:11,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:45:11,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1111900255, now seen corresponding path program 1 times [2022-01-10 23:45:11,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:45:11,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622197150] [2022-01-10 23:45:11,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:45:11,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:45:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:45:11,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:45:11,291 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:45:11,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622197150] [2022-01-10 23:45:11,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622197150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:45:11,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:45:11,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:45:11,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461237460] [2022-01-10 23:45:11,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:45:11,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:45:11,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:45:11,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:45:11,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:45:11,292 INFO L87 Difference]: Start difference. First operand 16039 states and 29371 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:14,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:45:14,144 INFO L93 Difference]: Finished difference Result 40485 states and 73753 transitions. [2022-01-10 23:45:14,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 23:45:14,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2022-01-10 23:45:14,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:45:14,184 INFO L225 Difference]: With dead ends: 40485 [2022-01-10 23:45:14,184 INFO L226 Difference]: Without dead ends: 24624 [2022-01-10 23:45:14,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:45:14,194 INFO L933 BasicCegarLoop]: 12176 mSDtfsCounter, 10209 mSDsluCounter, 12152 mSDsCounter, 0 mSdLazyCounter, 1377 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10209 SdHoareTripleChecker+Valid, 24328 SdHoareTripleChecker+Invalid, 1476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1377 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:45:14,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10209 Valid, 24328 Invalid, 1476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1377 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 23:45:14,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24624 states. [2022-01-10 23:45:15,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24624 to 15763. [2022-01-10 23:45:15,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15763 states, 15759 states have (on average 1.824925439431436) internal successors, (28759), 15762 states have internal predecessors, (28759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:15,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15763 states to 15763 states and 28759 transitions. [2022-01-10 23:45:15,241 INFO L78 Accepts]: Start accepts. Automaton has 15763 states and 28759 transitions. Word has length 90 [2022-01-10 23:45:15,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:45:15,241 INFO L470 AbstractCegarLoop]: Abstraction has 15763 states and 28759 transitions. [2022-01-10 23:45:15,241 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 3 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand 15763 states and 28759 transitions. [2022-01-10 23:45:15,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 23:45:15,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:45:15,245 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:45:15,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 23:45:15,245 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:45:15,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:45:15,245 INFO L85 PathProgramCache]: Analyzing trace with hash 473302941, now seen corresponding path program 1 times [2022-01-10 23:45:15,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:45:15,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690917089] [2022-01-10 23:45:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:45:15,245 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:45:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:45:15,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:45:15,310 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:45:15,310 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690917089] [2022-01-10 23:45:15,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690917089] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:45:15,310 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:45:15,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:45:15,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892953857] [2022-01-10 23:45:15,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:45:15,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 23:45:15,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:45:15,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 23:45:15,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 23:45:15,311 INFO L87 Difference]: Start difference. First operand 15763 states and 28759 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:21,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:45:21,324 INFO L93 Difference]: Finished difference Result 103877 states and 190479 transitions. [2022-01-10 23:45:21,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 23:45:21,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 92 [2022-01-10 23:45:21,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:45:21,464 INFO L225 Difference]: With dead ends: 103877 [2022-01-10 23:45:21,464 INFO L226 Difference]: Without dead ends: 88310 [2022-01-10 23:45:21,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 23:45:21,490 INFO L933 BasicCegarLoop]: 11577 mSDtfsCounter, 45146 mSDsluCounter, 32711 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45146 SdHoareTripleChecker+Valid, 44288 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:45:21,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45146 Valid, 44288 Invalid, 269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [118 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 23:45:21,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88310 states. [2022-01-10 23:45:23,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88310 to 24777. [2022-01-10 23:45:23,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24777 states, 24773 states have (on average 1.827917490816615) internal successors, (45283), 24776 states have internal predecessors, (45283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:23,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24777 states to 24777 states and 45283 transitions. [2022-01-10 23:45:23,649 INFO L78 Accepts]: Start accepts. Automaton has 24777 states and 45283 transitions. Word has length 92 [2022-01-10 23:45:23,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:45:23,650 INFO L470 AbstractCegarLoop]: Abstraction has 24777 states and 45283 transitions. [2022-01-10 23:45:23,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:45:23,650 INFO L276 IsEmpty]: Start isEmpty. Operand 24777 states and 45283 transitions. [2022-01-10 23:45:23,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 23:45:23,653 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:45:23,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:45:23,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 23:45:23,653 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2022-01-10 23:45:23,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:45:23,653 INFO L85 PathProgramCache]: Analyzing trace with hash 824102878, now seen corresponding path program 1 times [2022-01-10 23:45:23,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:45:23,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566981003] [2022-01-10 23:45:23,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:45:23,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:45:23,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:45:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:45:23,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:45:23,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566981003] [2022-01-10 23:45:23,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566981003] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:45:23,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:45:23,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 23:45:23,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454424171] [2022-01-10 23:45:23,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:45:23,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 23:45:23,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:45:23,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 23:45:23,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 23:45:23,698 INFO L87 Difference]: Start difference. First operand 24777 states and 45283 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)